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Merge branch 'generic-ipi' into generic-ipi-for-linus

Browse source 
Conflicts:

	arch/powerpc/Kconfig
	arch/s390/kernel/time.c
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/cpu/perfctr-watchdog.c
	arch/x86/kernel/i8259_64.c
	arch/x86/kernel/ldt.c
	arch/x86/kernel/nmi_64.c
	arch/x86/kernel/smpboot.c
	arch/x86/xen/smp.c
	include/asm-x86/hw_irq_32.h
	include/asm-x86/hw_irq_64.h
	include/asm-x86/mach-default/irq_vectors.h
	include/asm-x86/mach-voyager/irq_vectors.h
	include/asm-x86/smp.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-07-15 21:55:59 +02:00
commit 1a781a777b
125 changed files with 881 additions and 1787 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
arch/Kconfig
View file

@ -39,3 +39,6 @@ config HAVE_KRETPROBES
config HAVE_DMA_ATTRS
def_bool n
config USE_GENERIC_SMP_HELPERS
def_bool n

1
arch/alpha/Kconfig
View file

@ -528,6 +528,7 @@ config ARCH_MAY_HAVE_PC_FDC
config SMP
bool "Symmetric multi-processing support"
depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
select USE_GENERIC_SMP_HELPERS
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

6
arch/alpha/kernel/core_marvel.c
View file

@ -660,9 +660,9 @@ __marvel_rtc_io(u8 b, unsigned long addr, int write)
#ifdef CONFIG_SMP
if (smp_processor_id() != boot_cpuid)
smp_call_function_on_cpu(__marvel_access_rtc,
&rtc_access, 1, 1,
cpumask_of_cpu(boot_cpuid));
smp_call_function_single(boot_cpuid,
__marvel_access_rtc,
&rtc_access, 1);
else
__marvel_access_rtc(&rtc_access);
#else

2
arch/alpha/kernel/process.c
View file

@ -160,7 +160,7 @@ common_shutdown(int mode, char *restart_cmd)
struct halt_info args;
args.mode = mode;
args.restart_cmd = restart_cmd;
on_each_cpu(common_shutdown_1, &args, 1, 0);
on_each_cpu(common_shutdown_1, &args, 0);
}
void

180
arch/alpha/kernel/smp.c
View file

@ -62,6 +62,7 @@ static struct {
enum ipi_message_type {
IPI_RESCHEDULE,
IPI_CALL_FUNC,
IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
};
@ -558,51 +559,6 @@ send_ipi_message(cpumask_t to_whom, enum ipi_message_type operation)
wripir(i);
}
/* Structure and data for smp_call_function. This is designed to
minimize static memory requirements. Plus it looks cleaner. */
struct smp_call_struct {
void (*func) (void *info);
void *info;
long wait;
atomic_t unstarted_count;
atomic_t unfinished_count;
};
static struct smp_call_struct *smp_call_function_data;
/* Atomicly drop data into a shared pointer. The pointer is free if
it is initially locked. If retry, spin until free. */
static int
pointer_lock (void *lock, void *data, int retry)
{
void *old, *tmp;
mb();
again:
/* Compare and swap with zero. */
asm volatile (
"1: ldq_l %0,%1\n"
" mov %3,%2\n"
" bne %0,2f\n"
" stq_c %2,%1\n"
" beq %2,1b\n"
"2:"
: "=&r"(old), "=m"(*(void **)lock), "=&r"(tmp)
: "r"(data)
: "memory");
if (old == 0)
return 0;
if (! retry)
return -EBUSY;
while (*(void **)lock)
barrier();
goto again;
}
void
handle_ipi(struct pt_regs *regs)
{
@ -632,31 +588,12 @@ handle_ipi(struct pt_regs *regs)
break;
case IPI_CALL_FUNC:
{
struct smp_call_struct *data;
void (*func)(void *info);
void *info;
int wait;
data = smp_call_function_data;
func = data->func;
info = data->info;
wait = data->wait;
/* Notify the sending CPU that the data has been
received, and execution is about to begin. */
mb();
atomic_dec (&data->unstarted_count);
/* At this point the structure may be gone unless
wait is true. */
(*func)(info);
/* Notify the sending CPU that the task is done. */
mb();
if (wait) atomic_dec (&data->unfinished_count);
generic_smp_call_function_interrupt();
break;
case IPI_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
}
case IPI_CPU_STOP:
halt();
@ -700,102 +637,15 @@ smp_send_stop(void)
send_ipi_message(to_whom, IPI_CPU_STOP);
}
/*
* Run a function on all other CPUs.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <retry> If true, keep retrying until ready.
* <wait> If true, wait until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code.
*
* Does not return until remote CPUs are nearly ready to execute <func>
* or are or have executed.
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int
smp_call_function_on_cpu (void (*func) (void *info), void *info, int retry,
int wait, cpumask_t to_whom)
void arch_send_call_function_ipi(cpumask_t mask)
{
struct smp_call_struct data;
unsigned long timeout;
int num_cpus_to_call;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
data.wait = wait;
cpu_clear(smp_processor_id(), to_whom);
num_cpus_to_call = cpus_weight(to_whom);
atomic_set(&data.unstarted_count, num_cpus_to_call);
atomic_set(&data.unfinished_count, num_cpus_to_call);
/* Acquire the smp_call_function_data mutex. */
if (pointer_lock(&smp_call_function_data, &data, retry))
return -EBUSY;
/* Send a message to the requested CPUs. */
send_ipi_message(to_whom, IPI_CALL_FUNC);
/* Wait for a minimal response. */
timeout = jiffies + HZ;
while (atomic_read (&data.unstarted_count) > 0
&& time_before (jiffies, timeout))
barrier();
/* If there's no response yet, log a message but allow a longer
* timeout period -- if we get a response this time, log
* a message saying when we got it..
*/
if (atomic_read(&data.unstarted_count) > 0) {
long start_time = jiffies;
printk(KERN_ERR "%s: initial timeout -- trying long wait\n",
__func__);
timeout = jiffies + 30 * HZ;
while (atomic_read(&data.unstarted_count) > 0
&& time_before(jiffies, timeout))
barrier();
if (atomic_read(&data.unstarted_count) <= 0) {
long delta = jiffies - start_time;
printk(KERN_ERR
"%s: response %ld.%ld seconds into long wait\n",
__func__, delta / HZ,
(100 * (delta - ((delta / HZ) * HZ))) / HZ);
}
}
/* We either got one or timed out -- clear the lock. */
mb();
smp_call_function_data = NULL;
/*
* If after both the initial and long timeout periods we still don't
* have a response, something is very wrong...
*/
BUG_ON(atomic_read (&data.unstarted_count) > 0);
/* Wait for a complete response, if needed. */
if (wait) {
while (atomic_read (&data.unfinished_count) > 0)
barrier();
}
return 0;
send_ipi_message(mask, IPI_CALL_FUNC);
}
EXPORT_SYMBOL(smp_call_function_on_cpu);
int
smp_call_function (void (*func) (void *info), void *info, int retry, int wait)
void arch_send_call_function_single_ipi(int cpu)
{
return smp_call_function_on_cpu (func, info, retry, wait,
cpu_online_map);
send_ipi_message(cpumask_of_cpu(cpu), IPI_CALL_FUNC_SINGLE);
}
EXPORT_SYMBOL(smp_call_function);
static void
ipi_imb(void *ignored)
@ -807,7 +657,7 @@ void
smp_imb(void)
{
/* Must wait other processors to flush their icache before continue. */
if (on_each_cpu(ipi_imb, NULL, 1, 1))
if (on_each_cpu(ipi_imb, NULL, 1))
printk(KERN_CRIT "smp_imb: timed out\n");
}
EXPORT_SYMBOL(smp_imb);
@ -823,7 +673,7 @@ flush_tlb_all(void)
{
/* Although we don't have any data to pass, we do want to
synchronize with the other processors. */
if (on_each_cpu(ipi_flush_tlb_all, NULL, 1, 1)) {
if (on_each_cpu(ipi_flush_tlb_all, NULL, 1)) {
printk(KERN_CRIT "flush_tlb_all: timed out\n");
}
}
@ -860,7 +710,7 @@ flush_tlb_mm(struct mm_struct *mm)
}
}
if (smp_call_function(ipi_flush_tlb_mm, mm, 1, 1)) {
if (smp_call_function(ipi_flush_tlb_mm, mm, 1)) {
printk(KERN_CRIT "flush_tlb_mm: timed out\n");
}
@ -913,7 +763,7 @@ flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
data.mm = mm;
data.addr = addr;
if (smp_call_function(ipi_flush_tlb_page, &data, 1, 1)) {
if (smp_call_function(ipi_flush_tlb_page, &data, 1)) {
printk(KERN_CRIT "flush_tlb_page: timed out\n");
}
@ -965,7 +815,7 @@ flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
}
}
if (smp_call_function(ipi_flush_icache_page, mm, 1, 1)) {
if (smp_call_function(ipi_flush_icache_page, mm, 1)) {
printk(KERN_CRIT "flush_icache_page: timed out\n");
}

6
arch/alpha/oprofile/common.c
View file

@ -65,7 +65,7 @@ op_axp_setup(void)
model->reg_setup(&reg, ctr, &sys);
/* Configure the registers on all cpus. */
(void)smp_call_function(model->cpu_setup, &reg, 0, 1);
(void)smp_call_function(model->cpu_setup, &reg, 1);
model->cpu_setup(&reg);
return 0;
}
@ -86,7 +86,7 @@ op_axp_cpu_start(void *dummy)
static int
op_axp_start(void)
{
(void)smp_call_function(op_axp_cpu_start, NULL, 0, 1);
(void)smp_call_function(op_axp_cpu_start, NULL, 1);
op_axp_cpu_start(NULL);
return 0;
}
@ -101,7 +101,7 @@ op_axp_cpu_stop(void *dummy)
static void
op_axp_stop(void)
{
(void)smp_call_function(op_axp_cpu_stop, NULL, 0, 1);
(void)smp_call_function(op_axp_cpu_stop, NULL, 1);
op_axp_cpu_stop(NULL);
}

1
arch/arm/Kconfig
View file

@ -701,6 +701,7 @@ source "kernel/time/Kconfig"
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

163
arch/arm/kernel/smp.c
View file

@ -68,20 +68,10 @@ enum ipi_msg_type {
IPI_TIMER,
IPI_RESCHEDULE,
IPI_CALL_FUNC,
IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
};
struct smp_call_struct {
void (*func)(void *info);
void *info;
int wait;
cpumask_t pending;
cpumask_t unfinished;
};
static struct smp_call_struct * volatile smp_call_function_data;
static DEFINE_SPINLOCK(smp_call_function_lock);
int __cpuinit __cpu_up(unsigned int cpu)
{
struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu);
@ -366,114 +356,15 @@ static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
local_irq_restore(flags);
}
/*
* You must not call this function with disabled interrupts, from a
* hardware interrupt handler, nor from a bottom half handler.
*/
static int smp_call_function_on_cpu(void (*func)(void *info), void *info,
int retry, int wait, cpumask_t callmap)
void arch_send_call_function_ipi(cpumask_t mask)
{
struct smp_call_struct data;
unsigned long timeout;
int ret = 0;
data.func = func;
data.info = info;
data.wait = wait;
cpu_clear(smp_processor_id(), callmap);
if (cpus_empty(callmap))
goto out;
data.pending = callmap;
if (wait)
data.unfinished = callmap;
/*
* try to get the mutex on smp_call_function_data
*/
spin_lock(&smp_call_function_lock);
smp_call_function_data = &data;
send_ipi_message(callmap, IPI_CALL_FUNC);
timeout = jiffies + HZ;
while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
barrier();
/*
* did we time out?
*/
if (!cpus_empty(data.pending)) {
/*
* this may be causing our panic - report it
*/
printk(KERN_CRIT
"CPU%u: smp_call_function timeout for %p(%p)\n"
" callmap %lx pending %lx, %swait\n",
smp_processor_id(), func, info, *cpus_addr(callmap),
*cpus_addr(data.pending), wait ? "" : "no ");
/*
* TRACE
*/
timeout = jiffies + (5 * HZ);
while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
barrier();
if (cpus_empty(data.pending))
printk(KERN_CRIT " RESOLVED\n");
else
printk(KERN_CRIT " STILL STUCK\n");
}
/*
* whatever happened, we're done with the data, so release it
*/
smp_call_function_data = NULL;
spin_unlock(&smp_call_function_lock);
if (!cpus_empty(data.pending)) {
ret = -ETIMEDOUT;
goto out;
}
if (wait)
while (!cpus_empty(data.unfinished))
barrier();
out:
return 0;
send_ipi_message(mask, IPI_CALL_FUNC);
}
int smp_call_function(void (*func)(void *info), void *info, int retry,
int wait)
void arch_send_call_function_single_ipi(int cpu)
{
return smp_call_function_on_cpu(func, info, retry, wait,
cpu_online_map);
send_ipi_message(cpumask_of_cpu(cpu), IPI_CALL_FUNC_SINGLE);
}
EXPORT_SYMBOL_GPL(smp_call_function);
int smp_call_function_single(int cpu, void (*func)(void *info), void *info,
int retry, int wait)
{
/* prevent preemption and reschedule on another processor */
int current_cpu = get_cpu();
int ret = 0;
if (cpu == current_cpu) {
local_irq_disable();
func(info);
local_irq_enable();
} else
ret = smp_call_function_on_cpu(func, info, retry, wait,
cpumask_of_cpu(cpu));
put_cpu();
return ret;
}
EXPORT_SYMBOL_GPL(smp_call_function_single);
void show_ipi_list(struct seq_file *p)
{
@ -521,27 +412,6 @@ asmlinkage void __exception do_local_timer(struct pt_regs *regs)
}
#endif
/*
* ipi_call_function - handle IPI from smp_call_function()
*
* Note that we copy data out of the cross-call structure and then
* let the caller know that we're here and have done with their data
*/
static void ipi_call_function(unsigned int cpu)
{
struct smp_call_struct *data = smp_call_function_data;
void (*func)(void *info) = data->func;
void *info = data->info;
int wait = data->wait;
cpu_clear(cpu, data->pending);
func(info);
if (wait)
cpu_clear(cpu, data->unfinished);
}
static DEFINE_SPINLOCK(stop_lock);
/*
@ -611,7 +481,11 @@ asmlinkage void __exception do_IPI(struct pt_regs *regs)
break;
case IPI_CALL_FUNC:
ipi_call_function(cpu);
generic_smp_call_function_interrupt();
break;
case IPI_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
case IPI_CPU_STOP:
@ -662,14 +536,13 @@ int setup_profiling_timer(unsigned int multiplier)
}
static int
on_each_cpu_mask(void (*func)(void *), void *info, int retry, int wait,
cpumask_t mask)
on_each_cpu_mask(void (*func)(void *), void *info, int wait, cpumask_t mask)
{
int ret = 0;
preempt_disable();
ret = smp_call_function_on_cpu(func, info, retry, wait, mask);
ret = smp_call_function_mask(mask, func, info, wait);
if (cpu_isset(smp_processor_id(), mask))
func(info);
@ -731,14 +604,14 @@ static inline void ipi_flush_tlb_kernel_range(void *arg)
void flush_tlb_all(void)
{
on_each_cpu(ipi_flush_tlb_all, NULL, 1, 1);
on_each_cpu(ipi_flush_tlb_all, NULL, 1);
}
void flush_tlb_mm(struct mm_struct *mm)
{
cpumask_t mask = mm->cpu_vm_mask;
on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, 1, mask);
on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mask);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
@ -749,7 +622,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
ta.ta_vma = vma;
ta.ta_start = uaddr;
on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, 1, mask);
on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mask);
}
void flush_tlb_kernel_page(unsigned long kaddr)
@ -758,7 +631,7 @@ void flush_tlb_kernel_page(unsigned long kaddr)
ta.ta_start = kaddr;
on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1, 1);
on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
}
void flush_tlb_range(struct vm_area_struct *vma,
@ -771,7 +644,7 @@ void flush_tlb_range(struct vm_area_struct *vma,
ta.ta_start = start;
ta.ta_end = end;
on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, 1, mask);
on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mask);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
@ -781,5 +654,5 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
ta.ta_start = start;
ta.ta_end = end;
on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1, 1);
on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
}

2
arch/arm/oprofile/op_model_mpcore.c
View file

@ -201,7 +201,7 @@ static int em_call_function(int (*fn)(void))
data.ret = 0;
preempt_disable();
smp_call_function(em_func, &data, 1, 1);
smp_call_function(em_func, &data, 1);
em_func(&data);
preempt_enable();

2
arch/arm/vfp/vfpmodule.c
View file

@ -352,7 +352,7 @@ static int __init vfp_init(void)
else if (vfpsid & FPSID_NODOUBLE) {
printk("no double precision support\n");
} else {
smp_call_function(vfp_enable, NULL, 1, 1);
smp_call_function(vfp_enable, NULL, 1);
VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT; /* Extract the architecture version */
printk("implementor %02x architecture %d part %02x variant %x rev %x\n",

5
arch/cris/arch-v32/kernel/smp.c
View file

@ -194,7 +194,7 @@ void stop_this_cpu(void* dummy)
/* Other calls */
void smp_send_stop(void)
{
smp_call_function(stop_this_cpu, NULL, 1, 0);
smp_call_function(stop_this_cpu, NULL, 0);
}
int setup_profiling_timer(unsigned int multiplier)
@ -316,8 +316,7 @@ int send_ipi(int vector, int wait, cpumask_t cpu_mask)
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int smp_call_function(void (*func)(void *info), void *info,
int nonatomic, int wait)
int smp_call_function(void (*func)(void *info), void *info, int wait)
{
cpumask_t cpu_mask = CPU_MASK_ALL;
struct call_data_struct data;

1
arch/ia64/Kconfig
View file

@ -303,6 +303,7 @@ config VIRT_CPU_ACCOUNTING
config SMP
bool "Symmetric multi-processing support"
select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more

6
arch/ia64/kernel/mca.c
View file

@ -707,7 +707,7 @@ ia64_mca_cmc_vector_enable (void *dummy)
static void
ia64_mca_cmc_vector_disable_keventd(struct work_struct *unused)
{
on_each_cpu(ia64_mca_cmc_vector_disable, NULL, 1, 0);
on_each_cpu(ia64_mca_cmc_vector_disable, NULL, 0);
}
/*
@ -719,7 +719,7 @@ ia64_mca_cmc_vector_disable_keventd(struct work_struct *unused)
static void
ia64_mca_cmc_vector_enable_keventd(struct work_struct *unused)
{
on_each_cpu(ia64_mca_cmc_vector_enable, NULL, 1, 0);
on_each_cpu(ia64_mca_cmc_vector_enable, NULL, 0);
}
/*
@ -1881,7 +1881,7 @@ static int __cpuinit mca_cpu_callback(struct notifier_block *nfb,
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
smp_call_function_single(hotcpu, ia64_mca_cmc_vector_adjust,
NULL, 1, 0);
NULL, 0);
break;
}
return NOTIFY_OK;

2
arch/ia64/kernel/palinfo.c
View file

@ -921,7 +921,7 @@ int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page)
/* will send IPI to other CPU and wait for completion of remote call */
if ((ret=smp_call_function_single(f->req_cpu, palinfo_smp_call, &ptr, 0, 1))) {
if ((ret=smp_call_function_single(f->req_cpu, palinfo_smp_call, &ptr, 1))) {
printk(KERN_ERR "palinfo: remote CPU call from %d to %d on function %d: "
"error %d\n", smp_processor_id(), f->req_cpu, f->func_id, ret);
return 0;

6
arch/ia64/kernel/perfmon.c
View file

@ -1820,7 +1820,7 @@ pfm_syswide_cleanup_other_cpu(pfm_context_t *ctx)
int ret;
DPRINT(("calling CPU%d for cleanup\n", ctx->ctx_cpu));
ret = smp_call_function_single(ctx->ctx_cpu, pfm_syswide_force_stop, ctx, 0, 1);
ret = smp_call_function_single(ctx->ctx_cpu, pfm_syswide_force_stop, ctx, 1);
DPRINT(("called CPU%d for cleanup ret=%d\n", ctx->ctx_cpu, ret));
}
#endif /* CONFIG_SMP */
@ -6508,7 +6508,7 @@ pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
}
/* save the current system wide pmu states */
ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 0, 1);
ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
goto cleanup_reserve;
@ -6553,7 +6553,7 @@ pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
pfm_alt_intr_handler = NULL;
ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 0, 1);
ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
}

2
arch/ia64/kernel/process.c
View file

@ -286,7 +286,7 @@ void cpu_idle_wait(void)
{
smp_mb();
/* kick all the CPUs so that they exit out of pm_idle */
smp_call_function(do_nothing, NULL, 0, 1);
smp_call_function(do_nothing, NULL, 1);
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);

254
arch/ia64/kernel/smp.c
View file

@ -60,25 +60,9 @@ static struct local_tlb_flush_counts {
static DEFINE_PER_CPU(unsigned int, shadow_flush_counts[NR_CPUS]) ____cacheline_aligned;
/*
* Structure and data for smp_call_function(). This is designed to minimise static memory
* requirements. It also looks cleaner.
*/
static __cacheline_aligned DEFINE_SPINLOCK(call_lock);
struct call_data_struct {
void (*func) (void *info);
void *info;
long wait;
atomic_t started;
atomic_t finished;
};
static volatile struct call_data_struct *call_data;
#define IPI_CALL_FUNC 0
#define IPI_CPU_STOP 1
#define IPI_CALL_FUNC_SINGLE 2
#define IPI_KDUMP_CPU_STOP 3
/* This needs to be cacheline aligned because it is written to by *other* CPUs. */
@ -86,43 +70,6 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(u64, ipi_operation);
extern void cpu_halt (void);
void
lock_ipi_calllock(void)
{
spin_lock_irq(&call_lock);
}
void
unlock_ipi_calllock(void)
{
spin_unlock_irq(&call_lock);
}
static inline void
handle_call_data(void)
{
struct call_data_struct *data;
void (*func)(void *info);
void *info;
int wait;
/* release the 'pointer lock' */
data = (struct call_data_struct *)call_data;
func = data->func;
info = data->info;
wait = data->wait;
mb();
atomic_inc(&data->started);
/* At this point the structure may be gone unless wait is true. */
(*func)(info);
/* Notify the sending CPU that the task is done. */
mb();
if (wait)
atomic_inc(&data->finished);
}
static void
stop_this_cpu(void)
{
@ -163,13 +110,15 @@ handle_IPI (int irq, void *dev_id)
ops &= ~(1 << which);
switch (which) {
case IPI_CALL_FUNC:
handle_call_data();
break;
case IPI_CPU_STOP:
stop_this_cpu();
break;
case IPI_CALL_FUNC:
generic_smp_call_function_interrupt();
break;
case IPI_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
#ifdef CONFIG_KEXEC
case IPI_KDUMP_CPU_STOP:
unw_init_running(kdump_cpu_freeze, NULL);
@ -187,6 +136,8 @@ handle_IPI (int irq, void *dev_id)
return IRQ_HANDLED;
}
/*
* Called with preemption disabled.
*/
@ -334,7 +285,7 @@ smp_flush_tlb_cpumask(cpumask_t xcpumask)
void
smp_flush_tlb_all (void)
{
on_each_cpu((void (*)(void *))local_flush_tlb_all, NULL, 1, 1);
on_each_cpu((void (*)(void *))local_flush_tlb_all, NULL, 1);
}
void
@ -357,193 +308,18 @@ smp_flush_tlb_mm (struct mm_struct *mm)
* anyhow, and once a CPU is interrupted, the cost of local_flush_tlb_all() is
* rather trivial.
*/
on_each_cpu((void (*)(void *))local_finish_flush_tlb_mm, mm, 1, 1);
on_each_cpu((void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
}
/*
* Run a function on a specific CPU
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <nonatomic> Currently unused.
* <wait> If true, wait until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code.
*
* Does not return until the remote CPU is nearly ready to execute <func>
* or is or has executed.
*/
int
smp_call_function_single (int cpuid, void (*func) (void *info), void *info, int nonatomic,
int wait)
void arch_send_call_function_single_ipi(int cpu)
{
struct call_data_struct data;
int cpus = 1;
int me = get_cpu(); /* prevent preemption and reschedule on another processor */
if (cpuid == me) {
local_irq_disable();
func(info);
local_irq_enable();
put_cpu();
return 0;
}
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
spin_lock_bh(&call_lock);
call_data = &data;
mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC */
send_IPI_single(cpuid, IPI_CALL_FUNC);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
cpu_relax();
if (wait)
while (atomic_read(&data.finished) != cpus)
cpu_relax();
call_data = NULL;
spin_unlock_bh(&call_lock);
put_cpu();
return 0;
send_IPI_single(cpu, IPI_CALL_FUNC_SINGLE);
}
EXPORT_SYMBOL(smp_call_function_single);
/**
* smp_call_function_mask(): Run a function on a set of other CPUs.
* <mask> The set of cpus to run on. Must not include the current cpu.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <wait> If true, wait (atomically) until function
* has completed on other CPUs.
*
* Returns 0 on success, else a negative status code.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int smp_call_function_mask(cpumask_t mask,
void (*func)(void *), void *info,
int wait)
void arch_send_call_function_ipi(cpumask_t mask)
{
struct call_data_struct data;
cpumask_t allbutself;
int cpus;
spin_lock(&call_lock);
allbutself = cpu_online_map;
cpu_clear(smp_processor_id(), allbutself);
cpus_and(mask, mask, allbutself);
cpus = cpus_weight(mask);
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC*/
/* Send a message to other CPUs */
if (cpus_equal(mask, allbutself))
send_IPI_allbutself(IPI_CALL_FUNC);
else
send_IPI_mask(mask, IPI_CALL_FUNC);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
cpu_relax();
if (wait)
while (atomic_read(&data.finished) != cpus)
cpu_relax();
call_data = NULL;
spin_unlock(&call_lock);
return 0;
send_IPI_mask(mask, IPI_CALL_FUNC);
}
EXPORT_SYMBOL(smp_call_function_mask);
/*
* this function sends a 'generic call function' IPI to all other CPUs
* in the system.
*/
/*
* [SUMMARY] Run a function on all other CPUs.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <nonatomic> currently unused.
* <wait> If true, wait (atomically) until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code.
*
* Does not return until remote CPUs are nearly ready to execute <func> or are or have
* executed.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int
smp_call_function (void (*func) (void *info), void *info, int nonatomic, int wait)
{
struct call_data_struct data;
int cpus;
spin_lock(&call_lock);
cpus = num_online_cpus() - 1;
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC */
send_IPI_allbutself(IPI_CALL_FUNC);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
cpu_relax();
if (wait)
while (atomic_read(&data.finished) != cpus)
cpu_relax();
call_data = NULL;
spin_unlock(&call_lock);
return 0;
}
EXPORT_SYMBOL(smp_call_function);
/*
* this function calls the 'stop' function on all other CPUs in the system.

6
arch/ia64/kernel/smpboot.c
View file

@ -317,7 +317,7 @@ ia64_sync_itc (unsigned int master)
go[MASTER] = 1;
if (smp_call_function_single(master, sync_master, NULL, 1, 0) < 0) {
if (smp_call_function_single(master, sync_master, NULL, 0) < 0) {
printk(KERN_ERR "sync_itc: failed to get attention of CPU %u!\n", master);
return;
}
@ -395,14 +395,14 @@ smp_callin (void)
fix_b0_for_bsp();
lock_ipi_calllock();
ipi_call_lock_irq();
spin_lock(&vector_lock);
/* Setup the per cpu irq handling data structures */
__setup_vector_irq(cpuid);
cpu_set(cpuid, cpu_online_map);
per_cpu(cpu_state, cpuid) = CPU_ONLINE;
spin_unlock(&vector_lock);
unlock_ipi_calllock();
ipi_call_unlock_irq();
smp_setup_percpu_timer();

5
arch/ia64/kernel/uncached.c
View file

@ -123,8 +123,7 @@ static int uncached_add_chunk(struct uncached_pool *uc_pool, int nid)
status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
if (status == PAL_VISIBILITY_OK_REMOTE_NEEDED) {
atomic_set(&uc_pool->status, 0);
status = smp_call_function(uncached_ipi_visibility, uc_pool,
0, 1);
status = smp_call_function(uncached_ipi_visibility, uc_pool, 1);
if (status || atomic_read(&uc_pool->status))
goto failed;
} else if (status != PAL_VISIBILITY_OK)
@ -146,7 +145,7 @@ static int uncached_add_chunk(struct uncached_pool *uc_pool, int nid)
if (status != PAL_STATUS_SUCCESS)
goto failed;
atomic_set(&uc_pool->status, 0);
status = smp_call_function(uncached_ipi_mc_drain, uc_pool, 0, 1);
status = smp_call_function(uncached_ipi_mc_drain, uc_pool, 1);
if (status || atomic_read(&uc_pool->status))
goto failed;

2
arch/ia64/sn/kernel/sn2/sn_hwperf.c
View file

@ -629,7 +629,7 @@ static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info)
if (use_ipi) {
/* use an interprocessor interrupt to call SAL */
smp_call_function_single(cpu, sn_hwperf_call_sal,
op_info, 1, 1);
op_info, 1);
}
else {
/* migrate the task before calling SAL */

1
arch/m32r/Kconfig
View file

@ -296,6 +296,7 @@ config PREEMPT
config SMP
bool "Symmetric multi-processing support"
select USE_GENERIC_SMP_HELPERS
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

3
arch/m32r/kernel/m32r_ksyms.c
View file

@ -43,9 +43,6 @@ EXPORT_SYMBOL(dcache_dummy);
#endif
EXPORT_SYMBOL(cpu_data);
/* Global SMP stuff */
EXPORT_SYMBOL(smp_call_function);
/* TLB flushing */
EXPORT_SYMBOL(smp_flush_tlb_page);
#endif

132
arch/m32r/kernel/smp.c
View file

@ -34,22 +34,6 @@
/* Data structures and variables */
/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/
/*
* Structure and data for smp_call_function(). This is designed to minimise
* static memory requirements. It also looks cleaner.
*/
static DEFINE_SPINLOCK(call_lock);
struct call_data_struct {
void (*func) (void *info);
void *info;
atomic_t started;
atomic_t finished;
int wait;
} __attribute__ ((__aligned__(SMP_CACHE_BYTES)));
static struct call_data_struct *call_data;
/*
* For flush_cache_all()
*/
@ -96,9 +80,6 @@ void smp_invalidate_interrupt(void);
void smp_send_stop(void);
static void stop_this_cpu(void *);
int smp_call_function(void (*) (void *), void *, int, int);
void smp_call_function_interrupt(void);
void smp_send_timer(void);
void smp_ipi_timer_interrupt(struct pt_regs *);
void smp_local_timer_interrupt(void);
@ -231,7 +212,7 @@ void smp_flush_tlb_all(void)
local_irq_save(flags);
__flush_tlb_all();
local_irq_restore(flags);
smp_call_function(flush_tlb_all_ipi, NULL, 1, 1);
smp_call_function(flush_tlb_all_ipi, NULL, 1);
preempt_enable();
}
@ -524,7 +505,7 @@ void smp_invalidate_interrupt(void)
*==========================================================================*/
void smp_send_stop(void)
{
smp_call_function(stop_this_cpu, NULL, 1, 0);
smp_call_function(stop_this_cpu, NULL, 0);
}
/*==========================================================================*
@ -565,86 +546,14 @@ static void stop_this_cpu(void *dummy)
for ( ; ; );
}
/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/
/* Call function Routines */
/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/
/*==========================================================================*
* Name: smp_call_function
*
* Description: This routine sends a 'CALL_FUNCTION_IPI' to all other CPUs
* in the system.
*
* Born on Date: 2002.02.05
*
* Arguments: *func - The function to run. This must be fast and
* non-blocking.
* *info - An arbitrary pointer to pass to the function.
* nonatomic - currently unused.
* wait - If true, wait (atomically) until function has
* completed on other CPUs.
*
* Returns: 0 on success, else a negative status code. Does not return
* until remote CPUs are nearly ready to execute <<func>> or
* are or have executed.
*
* Cautions: You must not call this function with disabled interrupts or
* from a hardware interrupt handler, you may call it from a
* bottom half handler.
*
* Modification log:
* Date Who Description
* ---------- --- --------------------------------------------------------
*
*==========================================================================*/
int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
int wait)
void arch_send_call_function_ipi(cpumask_t mask)
{
struct call_data_struct data;
int cpus;
send_IPI_mask(mask, CALL_FUNCTION_IPI, 0);
}
#ifdef DEBUG_SMP
unsigned long flags;
__save_flags(flags);
if (!(flags & 0x0040)) /* Interrupt Disable NONONO */
BUG();
#endif /* DEBUG_SMP */
/* Holding any lock stops cpus from going down. */
spin_lock(&call_lock);
cpus = num_online_cpus() - 1;
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
mb();
/* Send a message to all other CPUs and wait for them to respond */
send_IPI_allbutself(CALL_FUNCTION_IPI, 0);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
barrier();
if (wait)
while (atomic_read(&data.finished) != cpus)
barrier();
spin_unlock(&call_lock);
return 0;
void arch_send_call_function_single_ipi(int cpu)
{
send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNC_SINGLE_IPI, 0);
}
/*==========================================================================*
@ -666,27 +575,16 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
*==========================================================================*/
void smp_call_function_interrupt(void)
{
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
int wait = call_data->wait;
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function
*/
mb();
atomic_inc(&call_data->started);
/*
* At this point the info structure may be out of scope unless wait==1
*/
irq_enter();
(*func)(info);
generic_smp_call_function_interrupt();
irq_exit();
}
if (wait) {
mb();
atomic_inc(&call_data->finished);
}
void smp_call_function_single_interrupt(void)
{
irq_enter();
generic_smp_call_function_single_interrupt();
irq_exit();
}
/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/

3
arch/m32r/kernel/traps.c
View file

@ -40,6 +40,7 @@ extern void smp_invalidate_interrupt(void);
extern void smp_call_function_interrupt(void);
extern void smp_ipi_timer_interrupt(void);
extern void smp_flush_cache_all_interrupt(void);
extern void smp_call_function_single_interrupt(void);
/*
* for Boot AP function
@ -103,7 +104,7 @@ void set_eit_vector_entries(void)
eit_vector[186] = (unsigned long)smp_call_function_interrupt;
eit_vector[187] = (unsigned long)smp_ipi_timer_interrupt;
eit_vector[188] = (unsigned long)smp_flush_cache_all_interrupt;
eit_vector[189] = 0;
eit_vector[189] = (unsigned long)smp_call_function_single_interrupt;
eit_vector[190] = 0;
eit_vector[191] = 0;
#endif

1
arch/mips/Kconfig
View file

@ -1763,6 +1763,7 @@ config SMP
bool "Multi-Processing support"
depends on SYS_SUPPORTS_SMP
select IRQ_PER_CPU
select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

4
arch/mips/kernel/irq-rm9000.c
View file

@ -49,7 +49,7 @@ static void local_rm9k_perfcounter_irq_startup(void *args)
static unsigned int rm9k_perfcounter_irq_startup(unsigned int irq)
{
on_each_cpu(local_rm9k_perfcounter_irq_startup, (void *) irq, 0, 1);
on_each_cpu(local_rm9k_perfcounter_irq_startup, (void *) irq, 1);
return 0;
}
@ -66,7 +66,7 @@ static void local_rm9k_perfcounter_irq_shutdown(void *args)
static void rm9k_perfcounter_irq_shutdown(unsigned int irq)
{
on_each_cpu(local_rm9k_perfcounter_irq_shutdown, (void *) irq, 0, 1);
on_each_cpu(local_rm9k_perfcounter_irq_shutdown, (void *) irq, 1);
}
static struct irq_chip rm9k_irq_controller = {

151
arch/mips/kernel/smp.c
View file

@ -131,149 +131,30 @@ asmlinkage __cpuinit void start_secondary(void)
cpu_idle();
}
DEFINE_SPINLOCK(smp_call_lock);
struct call_data_struct *call_data;
void arch_send_call_function_ipi(cpumask_t mask)
{
mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
}
/*
* Run a function on all other CPUs.
*
* <mask> cpuset_t of all processors to run the function on.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <retry> If true, keep retrying until ready.
* <wait> If true, wait until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code.
*
* Does not return until remote CPUs are nearly ready to execute <func>
* or are or have executed.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler:
*
* CPU A CPU B
* Disable interrupts
* smp_call_function()
* Take call_lock
* Send IPIs
* Wait for all cpus to acknowledge IPI
* CPU A has not responded, spin waiting
* for cpu A to respond, holding call_lock
* smp_call_function()
* Spin waiting for call_lock
* Deadlock Deadlock
* We reuse the same vector for the single IPI
*/
int smp_call_function_mask(cpumask_t mask, void (*func) (void *info),
void *info, int retry, int wait)
void arch_send_call_function_single_ipi(int cpu)
{
struct call_data_struct data;
int cpu = smp_processor_id();
int cpus;
/*
* Can die spectacularly if this CPU isn't yet marked online
*/
BUG_ON(!cpu_online(cpu));
cpu_clear(cpu, mask);
cpus = cpus_weight(mask);
if (!cpus)
return 0;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
spin_lock(&smp_call_lock);
call_data = &data;
smp_mb();
/* Send a message to all other CPUs and wait for them to respond */
mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
/* Wait for response */
/* FIXME: lock-up detection, backtrace on lock-up */
while (atomic_read(&data.started) != cpus)
barrier();
if (wait)
while (atomic_read(&data.finished) != cpus)
barrier();
call_data = NULL;
spin_unlock(&smp_call_lock);
return 0;
mp_ops->send_ipi_mask(cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
}
int smp_call_function(void (*func) (void *info), void *info, int retry,
int wait)
{
return smp_call_function_mask(cpu_online_map, func, info, retry, wait);
}
EXPORT_SYMBOL(smp_call_function);
/*
* Call into both interrupt handlers, as we share the IPI for them
*/
void smp_call_function_interrupt(void)
{
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
int wait = call_data->wait;
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function.
*/
smp_mb();
atomic_inc(&call_data->started);
/*
* At this point the info structure may be out of scope unless wait==1.
*/
irq_enter();
(*func)(info);
generic_smp_call_function_single_interrupt();
generic_smp_call_function_interrupt();
irq_exit();
if (wait) {
smp_mb();
atomic_inc(&call_data->finished);
}
}
int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
int retry, int wait)
{
int ret, me;
/*
* Can die spectacularly if this CPU isn't yet marked online
*/
if (!cpu_online(cpu))
return 0;
me = get_cpu();
BUG_ON(!cpu_online(me));
if (cpu == me) {
local_irq_disable();
func(info);
local_irq_enable();
put_cpu();
return 0;
}
ret = smp_call_function_mask(cpumask_of_cpu(cpu), func, info, retry,
wait);
put_cpu();
return 0;
}
EXPORT_SYMBOL(smp_call_function_single);
static void stop_this_cpu(void *dummy)
{
/*
@ -286,7 +167,7 @@ static void stop_this_cpu(void *dummy)
void smp_send_stop(void)
{
smp_call_function(stop_this_cpu, NULL, 1, 0);
smp_call_function(stop_this_cpu, NULL, 0);
}
void __init smp_cpus_done(unsigned int max_cpus)
@ -365,7 +246,7 @@ static void flush_tlb_all_ipi(void *info)
void flush_tlb_all(void)
{
on_each_cpu(flush_tlb_all_ipi, NULL, 1, 1);
on_each_cpu(flush_tlb_all_ipi, NULL, 1);
}
static void flush_tlb_mm_ipi(void *mm)
@ -385,7 +266,7 @@ static void flush_tlb_mm_ipi(void *mm)
static inline void smp_on_other_tlbs(void (*func) (void *info), void *info)
{
#ifndef CONFIG_MIPS_MT_SMTC
smp_call_function(func, info, 1, 1);
smp_call_function(func, info, 1);
#endif
}
@ -485,7 +366,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
.addr2 = end,
};
on_each_cpu(flush_tlb_kernel_range_ipi, &fd, 1, 1);
on_each_cpu(flush_tlb_kernel_range_ipi, &fd, 1);
}
static void flush_tlb_page_ipi(void *info)

1
arch/mips/kernel/smtc.c
View file

@ -877,7 +877,6 @@ static void ipi_resched_interrupt(void)
/* Return from interrupt should be enough to cause scheduler check */
}
static void ipi_call_interrupt(void)
{
/* Invoke generic function invocation code in smp.c */

18
arch/mips/mm/c-r4k.c
View file

@ -43,12 +43,12 @@
* primary cache.
*/
static inline void r4k_on_each_cpu(void (*func) (void *info), void *info,
int retry, int wait)
int wait)
{
preempt_disable();
#if !defined(CONFIG_MIPS_MT_SMP) && !defined(CONFIG_MIPS_MT_SMTC)
smp_call_function(func, info, retry, wait);
smp_call_function(func, info, wait);
#endif
func(info);
preempt_enable();
@ -350,7 +350,7 @@ static inline void local_r4k___flush_cache_all(void * args)
static void r4k___flush_cache_all(void)
{
r4k_on_each_cpu(local_r4k___flush_cache_all, NULL, 1, 1);
r4k_on_each_cpu(local_r4k___flush_cache_all, NULL, 1);
}
static inline int has_valid_asid(const struct mm_struct *mm)
@ -397,7 +397,7 @@ static void r4k_flush_cache_range(struct vm_area_struct *vma,
int exec = vma->vm_flags & VM_EXEC;
if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc))
r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1);
}
static inline void local_r4k_flush_cache_mm(void * args)
@ -429,7 +429,7 @@ static void r4k_flush_cache_mm(struct mm_struct *mm)
if (!cpu_has_dc_aliases)
return;
r4k_on_each_cpu(local_r4k_flush_cache_mm, mm, 1, 1);
r4k_on_each_cpu(local_r4k_flush_cache_mm, mm, 1);
}
struct flush_cache_page_args {
@ -521,7 +521,7 @@ static void r4k_flush_cache_page(struct vm_area_struct *vma,
args.addr = addr;
args.pfn = pfn;
r4k_on_each_cpu(local_r4k_flush_cache_page, &args, 1, 1);
r4k_on_each_cpu(local_r4k_flush_cache_page, &args, 1);
}
static inline void local_r4k_flush_data_cache_page(void * addr)
@ -535,7 +535,7 @@ static void r4k_flush_data_cache_page(unsigned long addr)
local_r4k_flush_data_cache_page((void *)addr);
else
r4k_on_each_cpu(local_r4k_flush_data_cache_page, (void *) addr,
1, 1);
1);
}
struct flush_icache_range_args {
@ -571,7 +571,7 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end)
args.start = start;
args.end = end;
r4k_on_each_cpu(local_r4k_flush_icache_range, &args, 1, 1);
r4k_on_each_cpu(local_r4k_flush_icache_range, &args, 1);
instruction_hazard();
}
@ -672,7 +672,7 @@ static void local_r4k_flush_cache_sigtramp(void * arg)
static void r4k_flush_cache_sigtramp(unsigned long addr)
{
r4k_on_each_cpu(local_r4k_flush_cache_sigtramp, (void *) addr, 1, 1);
r4k_on_each_cpu(local_r4k_flush_cache_sigtramp, (void *) addr, 1);
}
static void r4k_flush_icache_all(void)

6
arch/mips/oprofile/common.c
View file

@ -27,7 +27,7 @@ static int op_mips_setup(void)
model->reg_setup(ctr);
/* Configure the registers on all cpus. */
on_each_cpu(model->cpu_setup, NULL, 0, 1);
on_each_cpu(model->cpu_setup, NULL, 1);
return 0;
}
@ -58,7 +58,7 @@ static int op_mips_create_files(struct super_block * sb, struct dentry * root)
static int op_mips_start(void)
{
on_each_cpu(model->cpu_start, NULL, 0, 1);
on_each_cpu(model->cpu_start, NULL, 1);
return 0;
}
@ -66,7 +66,7 @@ static int op_mips_start(void)
static void op_mips_stop(void)
{
/* Disable performance monitoring for all counters. */
on_each_cpu(model->cpu_stop, NULL, 0, 1);
on_each_cpu(model->cpu_stop, NULL, 1);
}
int __init oprofile_arch_init(struct oprofile_operations *ops)

2
arch/mips/pmc-sierra/yosemite/prom.c
View file

@ -64,7 +64,7 @@ static void prom_exit(void)
#ifdef CONFIG_SMP
if (smp_processor_id())
/* CPU 1 */
smp_call_function(prom_cpu0_exit, NULL, 1, 1);
smp_call_function(prom_cpu0_exit, NULL, 1);
#endif
prom_cpu0_exit(NULL);
}

2
arch/mips/sibyte/cfe/setup.c
View file

@ -74,7 +74,7 @@ static void __noreturn cfe_linux_exit(void *arg)
if (!reboot_smp) {
/* Get CPU 0 to do the cfe_exit */
reboot_smp = 1;
smp_call_function(cfe_linux_exit, arg, 1, 0);
smp_call_function(cfe_linux_exit, arg, 0);
}
} else {
printk("Passing control back to CFE...\n");

2
arch/mips/sibyte/sb1250/prom.c
View file

@ -66,7 +66,7 @@ static void prom_linux_exit(void)
{
#ifdef CONFIG_SMP
if (smp_processor_id()) {
smp_call_function(prom_cpu0_exit, NULL, 1, 1);
smp_call_function(prom_cpu0_exit, NULL, 1);
}
#endif
while(1);

1
arch/parisc/Kconfig
View file

@ -199,6 +199,7 @@ endchoice
config SMP
bool "Symmetric multi-processing support"
select USE_GENERIC_SMP_HELPERS
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

6
arch/parisc/kernel/cache.c
View file

@ -51,12 +51,12 @@ static struct pdc_btlb_info btlb_info __read_mostly;
void
flush_data_cache(void)
{
on_each_cpu(flush_data_cache_local, NULL, 1, 1);
on_each_cpu(flush_data_cache_local, NULL, 1);
}
void
flush_instruction_cache(void)
{
on_each_cpu(flush_instruction_cache_local, NULL, 1, 1);
on_each_cpu(flush_instruction_cache_local, NULL, 1);
}
#endif
@ -515,7 +515,7 @@ static void cacheflush_h_tmp_function(void *dummy)
void flush_cache_all(void)
{
on_each_cpu(cacheflush_h_tmp_function, NULL, 1, 1);
on_each_cpu(cacheflush_h_tmp_function, NULL, 1);
}
void flush_cache_mm(struct mm_struct *mm)

134
arch/parisc/kernel/smp.c
View file

@ -84,19 +84,11 @@ EXPORT_SYMBOL(cpu_possible_map);
DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
struct smp_call_struct {
void (*func) (void *info);
void *info;
long wait;
atomic_t unstarted_count;
atomic_t unfinished_count;
};
static volatile struct smp_call_struct *smp_call_function_data;
enum ipi_message_type {
IPI_NOP=0,
IPI_RESCHEDULE=1,
IPI_CALL_FUNC,
IPI_CALL_FUNC_SINGLE,
IPI_CPU_START,
IPI_CPU_STOP,
IPI_CPU_TEST
@ -187,33 +179,12 @@ ipi_interrupt(int irq, void *dev_id)
case IPI_CALL_FUNC:
smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC\n", this_cpu);
{
volatile struct smp_call_struct *data;
void (*func)(void *info);
void *info;
int wait;
generic_smp_call_function_interrupt();
break;
data = smp_call_function_data;
func = data->func;
info = data->info;
wait = data->wait;
mb();
atomic_dec ((atomic_t *)&data->unstarted_count);
/* At this point, *data can't
* be relied upon.
*/
(*func)(info);
/* Notify the sending CPU that the
* task is done.
*/
mb();
if (wait)
atomic_dec ((atomic_t *)&data->unfinished_count);
}
case IPI_CALL_FUNC_SINGLE:
smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC_SINGLE\n", this_cpu);
generic_smp_call_function_single_interrupt();
break;
case IPI_CPU_START:
@ -256,6 +227,14 @@ ipi_send(int cpu, enum ipi_message_type op)
spin_unlock_irqrestore(lock, flags);
}
static void
send_IPI_mask(cpumask_t mask, enum ipi_message_type op)
{
int cpu;
for_each_cpu_mask(cpu, mask)
ipi_send(cpu, op);
}
static inline void
send_IPI_single(int dest_cpu, enum ipi_message_type op)
@ -295,86 +274,15 @@ smp_send_all_nop(void)
send_IPI_allbutself(IPI_NOP);
}
/**
* Run a function on all other CPUs.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <retry> If true, keep retrying until ready.
* <wait> If true, wait until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code.
*
* Does not return until remote CPUs are nearly ready to execute <func>
* or have executed.
*/
int
smp_call_function (void (*func) (void *info), void *info, int retry, int wait)
void arch_send_call_function_ipi(cpumask_t mask)
{
struct smp_call_struct data;
unsigned long timeout;
static DEFINE_SPINLOCK(lock);
int retries = 0;
if (num_online_cpus() < 2)
return 0;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
/* can also deadlock if IPIs are disabled */
WARN_ON((get_eiem() & (1UL<<(CPU_IRQ_MAX - IPI_IRQ))) == 0);
data.func = func;
data.info = info;
data.wait = wait;
atomic_set(&data.unstarted_count, num_online_cpus() - 1);
atomic_set(&data.unfinished_count, num_online_cpus() - 1);
if (retry) {
spin_lock (&lock);
while (smp_call_function_data != 0)
barrier();
}
else {
spin_lock (&lock);
if (smp_call_function_data) {
spin_unlock (&lock);
return -EBUSY;
}
}
smp_call_function_data = &data;
spin_unlock (&lock);
/* Send a message to all other CPUs and wait for them to respond */
send_IPI_allbutself(IPI_CALL_FUNC);
retry:
/* Wait for response */
timeout = jiffies + HZ;
while ( (atomic_read (&data.unstarted_count) > 0) &&
time_before (jiffies, timeout) )
barrier ();
if (atomic_read (&data.unstarted_count) > 0) {
printk(KERN_CRIT "SMP CALL FUNCTION TIMED OUT! (cpu=%d), try %d\n",
smp_processor_id(), ++retries);
goto retry;
}
/* We either got one or timed out. Release the lock */
mb();
smp_call_function_data = NULL;
while (wait && atomic_read (&data.unfinished_count) > 0)
barrier ();
return 0;
send_IPI_mask(mask, IPI_CALL_FUNC);
}
EXPORT_SYMBOL(smp_call_function);
void arch_send_call_function_single_ipi(int cpu)
{
send_IPI_single(cpu, IPI_CALL_FUNC_SINGLE);
}
/*
* Flush all other CPU's tlb and then mine. Do this with on_each_cpu()
@ -384,7 +292,7 @@ EXPORT_SYMBOL(smp_call_function);
void
smp_flush_tlb_all(void)
{
on_each_cpu(flush_tlb_all_local, NULL, 1, 1);
on_each_cpu(flush_tlb_all_local, NULL, 1);
}
/*

2
arch/parisc/mm/init.c
View file

@ -1053,7 +1053,7 @@ void flush_tlb_all(void)
do_recycle++;
}
spin_unlock(&sid_lock);
on_each_cpu(flush_tlb_all_local, NULL, 1, 1);
on_each_cpu(flush_tlb_all_local, NULL, 1);
if (do_recycle) {
spin_lock(&sid_lock);
recycle_sids(recycle_ndirty,recycle_dirty_array);

1
arch/powerpc/Kconfig
View file

@ -111,6 +111,7 @@ config PPC
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_LMB
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_OPROFILE
config EARLY_PRINTK

2
arch/powerpc/kernel/machine_kexec_64.c
View file

@ -172,7 +172,7 @@ static void kexec_prepare_cpus(void)
{
int my_cpu, i, notified=-1;
smp_call_function(kexec_smp_down, NULL, 0, /* wait */0);
smp_call_function(kexec_smp_down, NULL, /* wait */0);
my_cpu = get_cpu();
/* check the others cpus are now down (via paca hw cpu id == -1) */

2
arch/powerpc/kernel/rtas.c
View file

@ -747,7 +747,7 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
/* Call function on all CPUs. One of us will make the
* rtas call
*/
if (on_each_cpu(rtas_percpu_suspend_me, &data, 1, 0))
if (on_each_cpu(rtas_percpu_suspend_me, &data, 0))
data.error = -EINVAL;
wait_for_completion(&done);

234
arch/powerpc/kernel/smp.c
View file

@ -72,12 +72,8 @@ struct smp_ops_t *smp_ops;
static volatile unsigned int cpu_callin_map[NR_CPUS];
void smp_call_function_interrupt(void);
int smt_enabled_at_boot = 1;
static int ipi_fail_ok;
static void (*crash_ipi_function_ptr)(struct pt_regs *) = NULL;
#ifdef CONFIG_PPC64
@ -99,12 +95,15 @@ void smp_message_recv(int msg)
{
switch(msg) {
case PPC_MSG_CALL_FUNCTION:
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
break;
case PPC_MSG_RESCHEDULE:
/* XXX Do we have to do this? */
set_need_resched();
break;
case PPC_MSG_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
case PPC_MSG_DEBUGGER_BREAK:
if (crash_ipi_function_ptr) {
crash_ipi_function_ptr(get_irq_regs());
@ -128,6 +127,19 @@ void smp_send_reschedule(int cpu)
smp_ops->message_pass(cpu, PPC_MSG_RESCHEDULE);
}
void arch_send_call_function_single_ipi(int cpu)
{
smp_ops->message_pass(cpu, PPC_MSG_CALL_FUNC_SINGLE);
}
void arch_send_call_function_ipi(cpumask_t mask)
{
unsigned int cpu;
for_each_cpu_mask(cpu, mask)
smp_ops->message_pass(cpu, PPC_MSG_CALL_FUNCTION);
}
#ifdef CONFIG_DEBUGGER
void smp_send_debugger_break(int cpu)
{
@ -154,215 +166,9 @@ static void stop_this_cpu(void *dummy)
;
}
/*
* Structure and data for smp_call_function(). This is designed to minimise
* static memory requirements. It also looks cleaner.
* Stolen from the i386 version.
*/
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(call_lock);
static struct call_data_struct {
void (*func) (void *info);
void *info;
atomic_t started;
atomic_t finished;
int wait;
} *call_data;
/* delay of at least 8 seconds */
#define SMP_CALL_TIMEOUT 8
/*
* These functions send a 'generic call function' IPI to other online
* CPUS in the system.
*
* [SUMMARY] Run a function on other CPUs.
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <nonatomic> currently unused.
* <wait> If true, wait (atomically) until function has completed on other CPUs.
* [RETURNS] 0 on success, else a negative status code. Does not return until
* remote CPUs are nearly ready to execute <<func>> or are or have executed.
* <map> is a cpu map of the cpus to send IPI to.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
static int __smp_call_function_map(void (*func) (void *info), void *info,
int nonatomic, int wait, cpumask_t map)
{
struct call_data_struct data;
int ret = -1, num_cpus;
int cpu;
u64 timeout;
if (unlikely(smp_ops == NULL))
return ret;
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
/* remove 'self' from the map */
if (cpu_isset(smp_processor_id(), map))
cpu_clear(smp_processor_id(), map);
/* sanity check the map, remove any non-online processors. */
cpus_and(map, map, cpu_online_map);
num_cpus = cpus_weight(map);
if (!num_cpus)
goto done;
call_data = &data;
smp_wmb();
/* Send a message to all CPUs in the map */
for_each_cpu_mask(cpu, map)
smp_ops->message_pass(cpu, PPC_MSG_CALL_FUNCTION);
timeout = get_tb() + (u64) SMP_CALL_TIMEOUT * tb_ticks_per_sec;
/* Wait for indication that they have received the message */
while (atomic_read(&data.started) != num_cpus) {
HMT_low();
if (get_tb() >= timeout) {
printk("smp_call_function on cpu %d: other cpus not "
"responding (%d)\n", smp_processor_id(),
atomic_read(&data.started));
if (!ipi_fail_ok)
debugger(NULL);
goto out;
}
}
/* optionally wait for the CPUs to complete */
if (wait) {
while (atomic_read(&data.finished) != num_cpus) {
HMT_low();
if (get_tb() >= timeout) {
printk("smp_call_function on cpu %d: other "
"cpus not finishing (%d/%d)\n",
smp_processor_id(),
atomic_read(&data.finished),
atomic_read(&data.started));
debugger(NULL);
goto out;
}
}
}
done:
ret = 0;
out:
call_data = NULL;
HMT_medium();
return ret;
}
static int __smp_call_function(void (*func)(void *info), void *info,
int nonatomic, int wait)
{
int ret;
spin_lock(&call_lock);
ret =__smp_call_function_map(func, info, nonatomic, wait,
cpu_online_map);
spin_unlock(&call_lock);
return ret;
}
int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
int wait)
{
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
return __smp_call_function(func, info, nonatomic, wait);
}
EXPORT_SYMBOL(smp_call_function);
int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
int nonatomic, int wait)
{
cpumask_t map = CPU_MASK_NONE;
int ret = 0;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
if (!cpu_online(cpu))
return -EINVAL;
cpu_set(cpu, map);
if (cpu != get_cpu()) {
spin_lock(&call_lock);
ret = __smp_call_function_map(func, info, nonatomic, wait, map);
spin_unlock(&call_lock);
} else {
local_irq_disable();
func(info);
local_irq_enable();
}
put_cpu();
return ret;
}
EXPORT_SYMBOL(smp_call_function_single);
void smp_send_stop(void)
{
int nolock;
/* It's OK to fail sending the IPI, since the alternative is to
* be stuck forever waiting on the other CPU to take the interrupt.
*
* It's better to at least continue and go through reboot, since this
* function is usually called at panic or reboot time in the first
* place.
*/
ipi_fail_ok = 1;
/* Don't deadlock in case we got called through panic */
nolock = !spin_trylock(&call_lock);
__smp_call_function_map(stop_this_cpu, NULL, 1, 0, cpu_online_map);
if (!nolock)
spin_unlock(&call_lock);
}
void smp_call_function_interrupt(void)
{
void (*func) (void *info);
void *info;
int wait;
/* call_data will be NULL if the sender timed out while
* waiting on us to receive the call.
*/
if (!call_data)
return;
func = call_data->func;
info = call_data->info;
wait = call_data->wait;
if (!wait)
smp_mb__before_atomic_inc();
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function
*/
atomic_inc(&call_data->started);
/*
* At this point the info structure may be out of scope unless wait==1
*/
(*func)(info);
if (wait) {
smp_mb__before_atomic_inc();
atomic_inc(&call_data->finished);
}
smp_call_function(stop_this_cpu, NULL, 0);
}
extern struct gettimeofday_struct do_gtod;
@ -596,9 +402,9 @@ int __devinit start_secondary(void *unused)
secondary_cpu_time_init();
spin_lock(&call_lock);
ipi_call_lock();
cpu_set(cpu, cpu_online_map);
spin_unlock(&call_lock);
ipi_call_unlock();
local_irq_enable();

4
arch/powerpc/kernel/tau_6xx.c
View file

@ -192,7 +192,7 @@ static void tau_timeout_smp(unsigned long unused)
/* schedule ourselves to be run again */
mod_timer(&tau_timer, jiffies + shrink_timer) ;
on_each_cpu(tau_timeout, NULL, 1, 0);
on_each_cpu(tau_timeout, NULL, 0);
}
/*
@ -234,7 +234,7 @@ int __init TAU_init(void)
tau_timer.expires = jiffies + shrink_timer;
add_timer(&tau_timer);
on_each_cpu(TAU_init_smp, NULL, 1, 0);
on_each_cpu(TAU_init_smp, NULL, 0);
printk("Thermal assist unit ");
#ifdef CONFIG_TAU_INT

2
arch/powerpc/kernel/time.c
View file

@ -322,7 +322,7 @@ void snapshot_timebases(void)
{
if (!cpu_has_feature(CPU_FTR_PURR))
return;
on_each_cpu(snapshot_tb_and_purr, NULL, 0, 1);
on_each_cpu(snapshot_tb_and_purr, NULL, 1);
}
/*

2
arch/powerpc/mm/slice.c
View file

@ -218,7 +218,7 @@ static void slice_convert(struct mm_struct *mm, struct slice_mask mask, int psiz
mb();
/* XXX this is sub-optimal but will do for now */
on_each_cpu(slice_flush_segments, mm, 0, 1);
on_each_cpu(slice_flush_segments, mm, 1);
#ifdef CONFIG_SPU_BASE
spu_flush_all_slbs(mm);
#endif

2
arch/powerpc/mm/tlb_64.c
View file

@ -66,7 +66,7 @@ static void pgtable_free_now(pgtable_free_t pgf)
{
pte_freelist_forced_free++;
smp_call_function(pte_free_smp_sync, NULL, 0, 1);
smp_call_function(pte_free_smp_sync, NULL, 1);
pgtable_free(pgf);
}

6
arch/powerpc/oprofile/common.c
View file

@ -65,7 +65,7 @@ static int op_powerpc_setup(void)
/* Configure the registers on all cpus. If an error occurs on one
* of the cpus, op_per_cpu_rc will be set to the error */
on_each_cpu(op_powerpc_cpu_setup, NULL, 0, 1);
on_each_cpu(op_powerpc_cpu_setup, NULL, 1);
out: if (op_per_cpu_rc) {
/* error on setup release the performance counter hardware */
@ -100,7 +100,7 @@ static int op_powerpc_start(void)
if (model->global_start)
return model->global_start(ctr);
if (model->start) {
on_each_cpu(op_powerpc_cpu_start, NULL, 0, 1);
on_each_cpu(op_powerpc_cpu_start, NULL, 1);
return op_per_cpu_rc;
}
return -EIO; /* No start function is defined for this
@ -115,7 +115,7 @@ static inline void op_powerpc_cpu_stop(void *dummy)
static void op_powerpc_stop(void)
{
if (model->stop)
on_each_cpu(op_powerpc_cpu_stop, NULL, 0, 1);
on_each_cpu(op_powerpc_cpu_stop, NULL, 1);
if (model->global_stop)
model->global_stop();
}

1
arch/powerpc/platforms/cell/interrupt.c
View file

@ -218,6 +218,7 @@ void iic_request_IPIs(void)
{
iic_request_ipi(PPC_MSG_CALL_FUNCTION, "IPI-call");
iic_request_ipi(PPC_MSG_RESCHEDULE, "IPI-resched");
iic_request_ipi(PPC_MSG_CALL_FUNC_SINGLE, "IPI-call-single");
#ifdef CONFIG_DEBUGGER
iic_request_ipi(PPC_MSG_DEBUGGER_BREAK, "IPI-debug");
#endif /* CONFIG_DEBUGGER */

7
arch/powerpc/platforms/ps3/smp.c
View file

@ -105,9 +105,10 @@ static void __init ps3_smp_setup_cpu(int cpu)
* to index needs to be setup.
*/
BUILD_BUG_ON(PPC_MSG_CALL_FUNCTION != 0);
BUILD_BUG_ON(PPC_MSG_RESCHEDULE != 1);
BUILD_BUG_ON(PPC_MSG_DEBUGGER_BREAK != 3);
BUILD_BUG_ON(PPC_MSG_CALL_FUNCTION != 0);
BUILD_BUG_ON(PPC_MSG_RESCHEDULE != 1);
BUILD_BUG_ON(PPC_MSG_CALL_FUNC_SINGLE != 2);
BUILD_BUG_ON(PPC_MSG_DEBUGGER_BREAK != 3);
for (i = 0; i < MSG_COUNT; i++) {
result = ps3_event_receive_port_setup(cpu, &virqs[i]);

6
arch/powerpc/platforms/pseries/xics.c
View file

@ -383,13 +383,11 @@ static irqreturn_t xics_ipi_dispatch(int cpu)
mb();
smp_message_recv(PPC_MSG_RESCHEDULE);
}
#if 0
if (test_and_clear_bit(PPC_MSG_MIGRATE_TASK,
if (test_and_clear_bit(PPC_MSG_CALL_FUNC_SINGLE,
&xics_ipi_message[cpu].value)) {
mb();
smp_message_recv(PPC_MSG_MIGRATE_TASK);
smp_message_recv(PPC_MSG_CALL_FUNC_SINGLE);
}
#endif
#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
if (test_and_clear_bit(PPC_MSG_DEBUGGER_BREAK,
&xics_ipi_message[cpu].value)) {

2
arch/powerpc/sysdev/mpic.c
View file

@ -1494,7 +1494,7 @@ void mpic_request_ipis(void)
static char *ipi_names[] = {
"IPI0 (call function)",
"IPI1 (reschedule)",
"IPI2 (unused)",
"IPI2 (call function single)",
"IPI3 (debugger break)",
};
BUG_ON(mpic == NULL);

4
arch/s390/appldata/appldata_base.c
View file

@ -203,7 +203,7 @@ __appldata_vtimer_setup(int cmd)
per_cpu(appldata_timer, i).expires = per_cpu_interval;
smp_call_function_single(i, add_virt_timer_periodic,
&per_cpu(appldata_timer, i),
0, 1);
1);
}
appldata_timer_active = 1;
break;
@ -228,7 +228,7 @@ __appldata_vtimer_setup(int cmd)
args.timer = &per_cpu(appldata_timer, i);
args.expires = per_cpu_interval;
smp_call_function_single(i, __appldata_mod_vtimer_wrap,
&args, 0, 1);
&args, 1);
}
}
}

22
arch/s390/kernel/smp.c
View file

@ -109,7 +109,7 @@ static void do_call_function(void)
}
static void __smp_call_function_map(void (*func) (void *info), void *info,
int nonatomic, int wait, cpumask_t map)
int wait, cpumask_t map)
{
struct call_data_struct data;
int cpu, local = 0;
@ -162,7 +162,6 @@ static void __smp_call_function_map(void (*func) (void *info), void *info,
* smp_call_function:
* @func: the function to run; this must be fast and non-blocking
* @info: an arbitrary pointer to pass to the function
* @nonatomic: unused
* @wait: if true, wait (atomically) until function has completed on other CPUs
*
* Run a function on all other CPUs.
@ -170,15 +169,14 @@ static void __smp_call_function_map(void (*func) (void *info), void *info,
* You must not call this function with disabled interrupts, from a
* hardware interrupt handler or from a bottom half.
*/
int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
int wait)
int smp_call_function(void (*func) (void *info), void *info, int wait)
{
cpumask_t map;
spin_lock(&call_lock);
map = cpu_online_map;
cpu_clear(smp_processor_id(), map);
__smp_call_function_map(func, info, nonatomic, wait, map);
__smp_call_function_map(func, info, wait, map);
spin_unlock(&call_lock);
return 0;
}
@ -189,7 +187,6 @@ EXPORT_SYMBOL(smp_call_function);
* @cpu: the CPU where func should run
* @func: the function to run; this must be fast and non-blocking
* @info: an arbitrary pointer to pass to the function
* @nonatomic: unused
* @wait: if true, wait (atomically) until function has completed on other CPUs
*
* Run a function on one processor.
@ -198,11 +195,10 @@ EXPORT_SYMBOL(smp_call_function);
* hardware interrupt handler or from a bottom half.
*/
int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
int nonatomic, int wait)
int wait)
{
spin_lock(&call_lock);
__smp_call_function_map(func, info, nonatomic, wait,
cpumask_of_cpu(cpu));
__smp_call_function_map(func, info, wait, cpumask_of_cpu(cpu));
spin_unlock(&call_lock);
return 0;
}
@ -228,7 +224,7 @@ int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
{
spin_lock(&call_lock);
cpu_clear(smp_processor_id(), mask);
__smp_call_function_map(func, info, 0, wait, mask);
__smp_call_function_map(func, info, wait, mask);
spin_unlock(&call_lock);
return 0;
}
@ -303,7 +299,7 @@ static void smp_ptlb_callback(void *info)
void smp_ptlb_all(void)
{
on_each_cpu(smp_ptlb_callback, NULL, 0, 1);
on_each_cpu(smp_ptlb_callback, NULL, 1);
}
EXPORT_SYMBOL(smp_ptlb_all);
#endif /* ! CONFIG_64BIT */
@ -351,7 +347,7 @@ void smp_ctl_set_bit(int cr, int bit)
memset(&parms.orvals, 0, sizeof(parms.orvals));
memset(&parms.andvals, 0xff, sizeof(parms.andvals));
parms.orvals[cr] = 1 << bit;
on_each_cpu(smp_ctl_bit_callback, &parms, 0, 1);
on_each_cpu(smp_ctl_bit_callback, &parms, 1);
}
EXPORT_SYMBOL(smp_ctl_set_bit);
@ -365,7 +361,7 @@ void smp_ctl_clear_bit(int cr, int bit)
memset(&parms.orvals, 0, sizeof(parms.orvals));
memset(&parms.andvals, 0xff, sizeof(parms.andvals));
parms.andvals[cr] = ~(1L << bit);
on_each_cpu(smp_ctl_bit_callback, &parms, 0, 1);
on_each_cpu(smp_ctl_bit_callback, &parms, 1);
}
EXPORT_SYMBOL(smp_ctl_clear_bit);

6
arch/s390/kernel/time.c
View file

@ -707,7 +707,7 @@ static int etr_sync_clock(struct etr_aib *aib, int port)
*/
memset(&etr_sync, 0, sizeof(etr_sync));
preempt_disable();
smp_call_function(clock_sync_cpu_start, &etr_sync, 0, 0);
smp_call_function(clock_sync_cpu_start, &etr_sync, 0);
local_irq_disable();
enable_sync_clock();
@ -746,7 +746,7 @@ static int etr_sync_clock(struct etr_aib *aib, int port)
rc = -EAGAIN;
}
local_irq_enable();
smp_call_function(clock_sync_cpu_end, NULL, 0, 0);
smp_call_function(clock_sync_cpu_end, NULL, 0);
preempt_enable();
return rc;
}
@ -926,7 +926,7 @@ static void etr_work_fn(struct work_struct *work)
if (!eacr.ea) {
/* Both ports offline. Reset everything. */
eacr.dp = eacr.es = eacr.sl = 0;
on_each_cpu(disable_sync_clock, NULL, 0, 1);
on_each_cpu(disable_sync_clock, NULL, 1);
del_timer_sync(&etr_timer);
etr_update_eacr(eacr);
clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);

1
arch/sh/Kconfig
View file

@ -688,6 +688,7 @@ config CRASH_DUMP
config SMP
bool "Symmetric multi-processing support"
depends on SYS_SUPPORTS_SMP
select USE_GENERIC_SMP_HELPERS
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If

62
arch/sh/kernel/smp.c
View file

@ -36,13 +36,6 @@ EXPORT_SYMBOL(cpu_possible_map);
cpumask_t cpu_online_map;
EXPORT_SYMBOL(cpu_online_map);
static atomic_t cpus_booted = ATOMIC_INIT(0);
/*
* Run specified function on a particular processor.
*/
void __smp_call_function(unsigned int cpu);
static inline void __init smp_store_cpu_info(unsigned int cpu)
{
struct sh_cpuinfo *c = cpu_data + cpu;
@ -175,45 +168,20 @@ static void stop_this_cpu(void *unused)
void smp_send_stop(void)
{
smp_call_function(stop_this_cpu, 0, 1, 0);
smp_call_function(stop_this_cpu, 0, 0);
}
struct smp_fn_call_struct smp_fn_call = {
.lock = __SPIN_LOCK_UNLOCKED(smp_fn_call.lock),
.finished = ATOMIC_INIT(0),
};
/*
* The caller of this wants the passed function to run on every cpu. If wait
* is set, wait until all cpus have finished the function before returning.
* The lock is here to protect the call structure.
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int smp_call_function(void (*func)(void *info), void *info, int retry, int wait)
void arch_send_call_function_ipi(cpumask_t mask)
{
unsigned int nr_cpus = atomic_read(&cpus_booted);
int i;
int cpu;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
for_each_cpu_mask(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_FUNCTION);
}
spin_lock(&smp_fn_call.lock);
atomic_set(&smp_fn_call.finished, 0);
smp_fn_call.fn = func;
smp_fn_call.data = info;
for (i = 0; i < nr_cpus; i++)
if (i != smp_processor_id())
plat_send_ipi(i, SMP_MSG_FUNCTION);
if (wait)
while (atomic_read(&smp_fn_call.finished) != (nr_cpus - 1));
spin_unlock(&smp_fn_call.lock);
return 0;
void arch_send_call_function_single_ipi(int cpu)
{
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
}
/* Not really SMP stuff ... */
@ -229,7 +197,7 @@ static void flush_tlb_all_ipi(void *info)
void flush_tlb_all(void)
{
on_each_cpu(flush_tlb_all_ipi, 0, 1, 1);
on_each_cpu(flush_tlb_all_ipi, 0, 1);
}
static void flush_tlb_mm_ipi(void *mm)
@ -255,7 +223,7 @@ void flush_tlb_mm(struct mm_struct *mm)
preempt_disable();
if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1, 1);
smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
@ -292,7 +260,7 @@ void flush_tlb_range(struct vm_area_struct *vma,
fd.vma = vma;
fd.addr1 = start;
fd.addr2 = end;
smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1, 1);
smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
@ -316,7 +284,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
fd.addr1 = start;
fd.addr2 = end;
on_each_cpu(flush_tlb_kernel_range_ipi, (void *)&fd, 1, 1);
on_each_cpu(flush_tlb_kernel_range_ipi, (void *)&fd, 1);
}
static void flush_tlb_page_ipi(void *info)
@ -335,7 +303,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
fd.vma = vma;
fd.addr1 = page;
smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1, 1);
smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
@ -359,6 +327,6 @@ void flush_tlb_one(unsigned long asid, unsigned long vaddr)
fd.addr1 = asid;
fd.addr2 = vaddr;
smp_call_function(flush_tlb_one_ipi, (void *)&fd, 1, 1);
smp_call_function(flush_tlb_one_ipi, (void *)&fd, 1);
local_flush_tlb_one(asid, vaddr);
}

13
arch/sparc64/kernel/smp.c
View file

@ -807,7 +807,6 @@ extern unsigned long xcall_call_function;
* smp_call_function(): Run a function on all other CPUs.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @nonatomic: currently unused.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
* Returns 0 on success, else a negative status code. Does not return until
@ -816,8 +815,8 @@ extern unsigned long xcall_call_function;
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
static int smp_call_function_mask(void (*func)(void *info), void *info,
int nonatomic, int wait, cpumask_t mask)
static int sparc64_smp_call_function_mask(void (*func)(void *info), void *info,
int wait, cpumask_t mask)
{
struct call_data_struct data;
int cpus;
@ -852,11 +851,9 @@ static int smp_call_function_mask(void (*func)(void *info), void *info,
return 0;
}
int smp_call_function(void (*func)(void *info), void *info,
int nonatomic, int wait)
int smp_call_function(void (*func)(void *info), void *info, int wait)
{
return smp_call_function_mask(func, info, nonatomic, wait,
cpu_online_map);
return sparc64_smp_call_function_mask(func, info, wait, cpu_online_map);
}
void smp_call_function_client(int irq, struct pt_regs *regs)
@ -893,7 +890,7 @@ static void tsb_sync(void *info)
void smp_tsb_sync(struct mm_struct *mm)
{
smp_call_function_mask(tsb_sync, mm, 0, 1, mm->cpu_vm_mask);
sparc64_smp_call_function_mask(tsb_sync, mm, 1, mm->cpu_vm_mask);
}
extern unsigned long xcall_flush_tlb_mm;

2
arch/sparc64/mm/hugetlbpage.c
View file

@ -344,7 +344,7 @@ void hugetlb_prefault_arch_hook(struct mm_struct *mm)
* also executing in this address space.
*/
mm->context.sparc64_ctx_val = ctx;
on_each_cpu(context_reload, mm, 0, 0);
on_each_cpu(context_reload, mm, 0);
}
spin_unlock(&ctx_alloc_lock);
}

3
arch/um/kernel/smp.c
View file

@ -214,8 +214,7 @@ void smp_call_function_slave(int cpu)
atomic_inc(&scf_finished);
}
int smp_call_function(void (*_func)(void *info), void *_info, int nonatomic,
int wait)
int smp_call_function(void (*_func)(void *info), void *_info, int wait)
{
int cpus = num_online_cpus() - 1;
int i;

1
arch/x86/Kconfig
View file

@ -170,6 +170,7 @@ config GENERIC_PENDING_IRQ
config X86_SMP
bool
depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)
select USE_GENERIC_SMP_HELPERS
default y
config X86_32_SMP

4
arch/x86/kernel/apic_32.c
View file

@ -1340,6 +1340,10 @@ void __init smp_intr_init(void)
/* IPI for generic function call */
alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
/* IPI for single call function */
set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR,
call_function_single_interrupt);
}
#endif

6
arch/x86/kernel/cpu/mcheck/mce_64.c
View file

@ -364,7 +364,7 @@ static void mcheck_check_cpu(void *info)
static void mcheck_timer(struct work_struct *work)
{
on_each_cpu(mcheck_check_cpu, NULL, 1, 1);
on_each_cpu(mcheck_check_cpu, NULL, 1);
/*
* Alert userspace if needed. If we logged an MCE, reduce the
@ -621,7 +621,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
* Collect entries that were still getting written before the
* synchronize.
*/
on_each_cpu(collect_tscs, cpu_tsc, 1, 1);
on_each_cpu(collect_tscs, cpu_tsc, 1);
for (i = next; i < MCE_LOG_LEN; i++) {
if (mcelog.entry[i].finished &&
mcelog.entry[i].tsc < cpu_tsc[mcelog.entry[i].cpu]) {
@ -746,7 +746,7 @@ static void mce_restart(void)
if (next_interval)
cancel_delayed_work(&mcheck_work);
/* Timer race is harmless here */
on_each_cpu(mce_init, NULL, 1, 1);
on_each_cpu(mce_init, NULL, 1);
next_interval = check_interval * HZ;
if (next_interval)
schedule_delayed_work(&mcheck_work,

2
arch/x86/kernel/cpu/mcheck/non-fatal.c
View file

@ -59,7 +59,7 @@ static DECLARE_DELAYED_WORK(mce_work, mce_work_fn);
static void mce_work_fn(struct work_struct *work)
{
on_each_cpu(mce_checkregs, NULL, 1, 1);
on_each_cpu(mce_checkregs, NULL, 1);
schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE));
}

4
arch/x86/kernel/cpu/mtrr/main.c
View file

@ -223,7 +223,7 @@ static void set_mtrr(unsigned int reg, unsigned long base,
atomic_set(&data.gate,0);
/* Start the ball rolling on other CPUs */
if (smp_call_function(ipi_handler, &data, 1, 0) != 0)
if (smp_call_function(ipi_handler, &data, 0) != 0)
panic("mtrr: timed out waiting for other CPUs\n");
local_irq_save(flags);
@ -1682,7 +1682,7 @@ void mtrr_ap_init(void)
*/
void mtrr_save_state(void)
{
smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1);
}
static int __init mtrr_init_finialize(void)

4
arch/x86/kernel/cpu/perfctr-watchdog.c
View file

@ -189,7 +189,7 @@ void disable_lapic_nmi_watchdog(void)
if (atomic_read(&nmi_active) <= 0)
return;
on_each_cpu(stop_apic_nmi_watchdog, NULL, 0, 1);
on_each_cpu(stop_apic_nmi_watchdog, NULL, 1);
if (wd_ops)
wd_ops->unreserve();
@ -213,7 +213,7 @@ void enable_lapic_nmi_watchdog(void)
return;
}
on_each_cpu(setup_apic_nmi_watchdog, NULL, 0, 1);
on_each_cpu(setup_apic_nmi_watchdog, NULL, 1);
touch_nmi_watchdog();
}

2
arch/x86/kernel/cpuid.c
View file

@ -96,7 +96,7 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
for (; count; count -= 16) {
cmd.eax = pos;
cmd.ecx = pos >> 32;
smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1);
if (copy_to_user(tmp, &cmd, 16))
return -EFAULT;
tmp += 16;

3
arch/x86/kernel/entry_64.S
View file

@ -816,6 +816,9 @@ END(invalidate_interrupt\num)
ENTRY(call_function_interrupt)
apicinterrupt CALL_FUNCTION_VECTOR,smp_call_function_interrupt
END(call_function_interrupt)
ENTRY(call_function_single_interrupt)
apicinterrupt CALL_FUNCTION_SINGLE_VECTOR,smp_call_function_single_interrupt
END(call_function_single_interrupt)
ENTRY(irq_move_cleanup_interrupt)
apicinterrupt IRQ_MOVE_CLEANUP_VECTOR,smp_irq_move_cleanup_interrupt
END(irq_move_cleanup_interrupt)

2
arch/x86/kernel/io_apic_32.c
View file

@ -1569,7 +1569,7 @@ void /*__init*/ print_local_APIC(void *dummy)
void print_all_local_APICs(void)
{
on_each_cpu(print_local_APIC, NULL, 1, 1);
on_each_cpu(print_local_APIC, NULL, 1);
}
void /*__init*/ print_PIC(void)

2
arch/x86/kernel/io_apic_64.c
View file

@ -1160,7 +1160,7 @@ void __apicdebuginit print_local_APIC(void * dummy)
void print_all_local_APICs (void)
{
on_each_cpu(print_local_APIC, NULL, 1, 1);
on_each_cpu(print_local_APIC, NULL, 1);
}
void __apicdebuginit print_PIC(void)

4
arch/x86/kernel/irqinit_64.c
View file

@ -199,6 +199,10 @@ void __init native_init_IRQ(void)
/* IPI for generic function call */
alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
/* IPI for generic single function call */
alloc_intr_gate(CALL_FUNCTION_SINGLE_VECTOR,
call_function_single_interrupt);
/* Low priority IPI to cleanup after moving an irq */
set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);
#endif

2
arch/x86/kernel/ldt.c
View file

@ -68,7 +68,7 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
load_LDT(pc);
mask = cpumask_of_cpu(smp_processor_id());
if (!cpus_equal(current->mm->cpu_vm_mask, mask))
smp_call_function(flush_ldt, current->mm, 1, 1);
smp_call_function(flush_ldt, current->mm, 1);
preempt_enable();
#else
load_LDT(pc);

6
arch/x86/kernel/nmi.c
View file

@ -130,7 +130,7 @@ int __init check_nmi_watchdog(void)
#ifdef CONFIG_SMP
if (nmi_watchdog == NMI_LOCAL_APIC)
smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0);
smp_call_function(nmi_cpu_busy, (void *)&endflag, 0);
#endif
for_each_possible_cpu(cpu)
@ -272,7 +272,7 @@ static void __acpi_nmi_enable(void *__unused)
void acpi_nmi_enable(void)
{
if (atomic_read(&nmi_active) && nmi_watchdog == NMI_IO_APIC)
on_each_cpu(__acpi_nmi_enable, NULL, 0, 1);
on_each_cpu(__acpi_nmi_enable, NULL, 1);
}
static void __acpi_nmi_disable(void *__unused)
@ -286,7 +286,7 @@ static void __acpi_nmi_disable(void *__unused)
void acpi_nmi_disable(void)
{
if (atomic_read(&nmi_active) && nmi_watchdog == NMI_IO_APIC)
on_each_cpu(__acpi_nmi_disable, NULL, 0, 1);
on_each_cpu(__acpi_nmi_disable, NULL, 1);
}
void setup_apic_nmi_watchdog(void *unused)

2
arch/x86/kernel/process.c
View file

@ -132,7 +132,7 @@ void cpu_idle_wait(void)
{
smp_mb();
/* kick all the CPUs so that they exit out of pm_idle */
smp_call_function(do_nothing, NULL, 0, 1);
smp_call_function(do_nothing, NULL, 1);
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);

158
arch/x86/kernel/smp.c
View file

@ -121,132 +121,23 @@ static void native_smp_send_reschedule(int cpu)
send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
}
/*
* Structure and data for smp_call_function(). This is designed to minimise
* static memory requirements. It also looks cleaner.
*/
static DEFINE_SPINLOCK(call_lock);
struct call_data_struct {
void (*func) (void *info);
void *info;
atomic_t started;
atomic_t finished;
int wait;
};
void lock_ipi_call_lock(void)
void native_send_call_func_single_ipi(int cpu)
{
spin_lock_irq(&call_lock);
send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNCTION_SINGLE_VECTOR);
}
void unlock_ipi_call_lock(void)
void native_send_call_func_ipi(cpumask_t mask)
{
spin_unlock_irq(&call_lock);
}
static struct call_data_struct *call_data;
static void __smp_call_function(void (*func) (void *info), void *info,
int nonatomic, int wait)
{
struct call_data_struct data;
int cpus = num_online_cpus() - 1;
if (!cpus)
return;
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
mb();
/* Send a message to all other CPUs and wait for them to respond */
send_IPI_allbutself(CALL_FUNCTION_VECTOR);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
cpu_relax();
if (wait)
while (atomic_read(&data.finished) != cpus)
cpu_relax();
}
/**
* smp_call_function_mask(): Run a function on a set of other CPUs.
* @mask: The set of cpus to run on. Must not include the current cpu.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
* Returns 0 on success, else a negative status code.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
static int
native_smp_call_function_mask(cpumask_t mask,
void (*func)(void *), void *info,
int wait)
{
struct call_data_struct data;
cpumask_t allbutself;
int cpus;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
/* Holding any lock stops cpus from going down. */
spin_lock(&call_lock);
allbutself = cpu_online_map;
cpu_clear(smp_processor_id(), allbutself);
cpus_and(mask, mask, allbutself);
cpus = cpus_weight(mask);
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
wmb();
/* Send a message to other CPUs */
if (cpus_equal(mask, allbutself) &&
cpus_equal(cpu_online_map, cpu_callout_map))
send_IPI_allbutself(CALL_FUNCTION_VECTOR);
else
send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
/* Wait for response */
while (atomic_read(&data.started) != cpus)
cpu_relax();
if (wait)
while (atomic_read(&data.finished) != cpus)
cpu_relax();
spin_unlock(&call_lock);
return 0;
}
static void stop_this_cpu(void *dummy)
@ -268,18 +159,13 @@ static void stop_this_cpu(void *dummy)
static void native_smp_send_stop(void)
{
int nolock;
unsigned long flags;
if (reboot_force)
return;
/* Don't deadlock on the call lock in panic */
nolock = !spin_trylock(&call_lock);
smp_call_function(stop_this_cpu, NULL, 0);
local_irq_save(flags);
__smp_call_function(stop_this_cpu, NULL, 0, 0);
if (!nolock)
spin_unlock(&call_lock);
disable_local_APIC();
local_irq_restore(flags);
}
@ -301,33 +187,28 @@ void smp_reschedule_interrupt(struct pt_regs *regs)
void smp_call_function_interrupt(struct pt_regs *regs)
{
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
int wait = call_data->wait;
ack_APIC_irq();
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function
*/
mb();
atomic_inc(&call_data->started);
/*
* At this point the info structure may be out of scope unless wait==1
*/
irq_enter();
(*func)(info);
generic_smp_call_function_interrupt();
#ifdef CONFIG_X86_32
__get_cpu_var(irq_stat).irq_call_count++;
#else
add_pda(irq_call_count, 1);
#endif
irq_exit();
}
if (wait) {
mb();
atomic_inc(&call_data->finished);
}
void smp_call_function_single_interrupt(struct pt_regs *regs)
{
ack_APIC_irq();
irq_enter();
generic_smp_call_function_single_interrupt();
#ifdef CONFIG_X86_32
__get_cpu_var(irq_stat).irq_call_count++;
#else
add_pda(irq_call_count, 1);
#endif
irq_exit();
}
struct smp_ops smp_ops = {
@ -338,7 +219,8 @@ struct smp_ops smp_ops = {
.smp_send_stop = native_smp_send_stop,
.smp_send_reschedule = native_smp_send_reschedule,
.smp_call_function_mask = native_smp_call_function_mask,
.send_call_func_ipi = native_send_call_func_ipi,
.send_call_func_single_ipi = native_send_call_func_single_ipi,
};
EXPORT_SYMBOL_GPL(smp_ops);

4
arch/x86/kernel/smpboot.c
View file

@ -327,12 +327,12 @@ static void __cpuinit start_secondary(void *unused)
* lock helps us to not include this cpu in a currently in progress
* smp_call_function().
*/
lock_ipi_call_lock();
ipi_call_lock_irq();
#ifdef CONFIG_X86_IO_APIC
setup_vector_irq(smp_processor_id());
#endif
cpu_set(smp_processor_id(), cpu_online_map);
unlock_ipi_call_lock();
ipi_call_unlock_irq();
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
setup_secondary_clock();

56
arch/x86/kernel/smpcommon.c
View file

@ -25,59 +25,3 @@ __cpuinit void init_gdt(int cpu)
per_cpu(cpu_number, cpu) = cpu;
}
#endif
/**
* smp_call_function(): Run a function on all other CPUs.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @nonatomic: Unused.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
* Returns 0 on success, else a negative status code.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
int wait)
{
return smp_call_function_mask(cpu_online_map, func, info, wait);
}
EXPORT_SYMBOL(smp_call_function);
/**
* smp_call_function_single - Run a function on a specific CPU
* @cpu: The target CPU. Cannot be the calling CPU.
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @nonatomic: Unused.
* @wait: If true, wait until function has completed on other CPUs.
*
* Returns 0 on success, else a negative status code.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func.
*/
int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
int nonatomic, int wait)
{
/* prevent preemption and reschedule on another processor */
int ret;
int me = get_cpu();
if (cpu == me) {
local_irq_disable();
func(info);
local_irq_enable();
put_cpu();
return 0;
}
ret = smp_call_function_mask(cpumask_of_cpu(cpu), func, info, wait);
put_cpu();
return ret;
}
EXPORT_SYMBOL(smp_call_function_single);

2
arch/x86/kernel/tlb_32.c
View file

@ -238,6 +238,6 @@ static void do_flush_tlb_all(void *info)
void flush_tlb_all(void)
{
on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
on_each_cpu(do_flush_tlb_all, NULL, 1);
}

2
arch/x86/kernel/tlb_64.c
View file

@ -275,5 +275,5 @@ static void do_flush_tlb_all(void *info)
void flush_tlb_all(void)
{
on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
on_each_cpu(do_flush_tlb_all, NULL, 1);
}

4
arch/x86/kernel/vsyscall_64.c
View file

@ -279,7 +279,7 @@ cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
{
long cpu = (long)arg;
if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN)
smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 1);
return NOTIFY_DONE;
}
@ -302,7 +302,7 @@ static int __init vsyscall_init(void)
#ifdef CONFIG_SYSCTL
register_sysctl_table(kernel_root_table2);
#endif
on_each_cpu(cpu_vsyscall_init, NULL, 0, 1);
on_each_cpu(cpu_vsyscall_init, NULL, 1);
hotcpu_notifier(cpu_vsyscall_notifier, 0);
return 0;
}

4
arch/x86/kvm/vmx.c
View file

@ -335,7 +335,7 @@ static void vcpu_clear(struct vcpu_vmx *vmx)
{
if (vmx->vcpu.cpu == -1)
return;
smp_call_function_single(vmx->vcpu.cpu, __vcpu_clear, vmx, 0, 1);
smp_call_function_single(vmx->vcpu.cpu, __vcpu_clear, vmx, 1);
vmx->launched = 0;
}
@ -2968,7 +2968,7 @@ static void vmx_free_vmcs(struct kvm_vcpu *vcpu)
struct vcpu_vmx *vmx = to_vmx(vcpu);
if (vmx->vmcs) {
on_each_cpu(__vcpu_clear, vmx, 0, 1);
on_each_cpu(__vcpu_clear, vmx, 1);
free_vmcs(vmx->vmcs);
vmx->vmcs = NULL;
}

2
arch/x86/kvm/x86.c
View file

@ -4044,6 +4044,6 @@ void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
* So need not to call smp_call_function_single() in that case.
*/
if (vcpu->guest_mode && vcpu->cpu != cpu)
smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0, 0);
smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
put_cpu();
}

8
arch/x86/lib/msr-on-cpu.c
View file

@ -30,10 +30,10 @@ static int _rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h, int safe)
rv.msr_no = msr_no;
if (safe) {
smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 0, 1);
smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 1);
err = rv.err;
} else {
smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 0, 1);
smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1);
}
*l = rv.l;
*h = rv.h;
@ -64,10 +64,10 @@ static int _wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h, int safe)
rv.l = l;
rv.h = h;
if (safe) {
smp_call_function_single(cpu, __wrmsr_safe_on_cpu, &rv, 0, 1);
smp_call_function_single(cpu, __wrmsr_safe_on_cpu, &rv, 1);
err = rv.err;
} else {
smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 0, 1);
smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1);
}
return err;

98
arch/x86/mach-voyager/voyager_smp.c
View file

@ -950,94 +950,24 @@ static void smp_stop_cpu_function(void *dummy)
halt();
}
static DEFINE_SPINLOCK(call_lock);
struct call_data_struct {
void (*func) (void *info);
void *info;
volatile unsigned long started;
volatile unsigned long finished;
int wait;
};
static struct call_data_struct *call_data;
/* execute a thread on a new CPU. The function to be called must be
* previously set up. This is used to schedule a function for
* execution on all CPUs - set up the function then broadcast a
* function_interrupt CPI to come here on each CPU */
static void smp_call_function_interrupt(void)
{
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
/* must take copy of wait because call_data may be replaced
* unless the function is waiting for us to finish */
int wait = call_data->wait;
__u8 cpu = smp_processor_id();
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function
*/
mb();
if (!test_and_clear_bit(cpu, &call_data->started)) {
/* If the bit wasn't set, this could be a replay */
printk(KERN_WARNING "VOYAGER SMP: CPU %d received call funtion"
" with no call pending\n", cpu);
return;
}
/*
* At this point the info structure may be out of scope unless wait==1
*/
irq_enter();
(*func) (info);
generic_smp_call_function_interrupt();
__get_cpu_var(irq_stat).irq_call_count++;
irq_exit();
if (wait) {
mb();
clear_bit(cpu, &call_data->finished);
}
}
static int
voyager_smp_call_function_mask(cpumask_t cpumask,
void (*func) (void *info), void *info, int wait)
static void smp_call_function_single_interrupt(void)
{
struct call_data_struct data;
u32 mask = cpus_addr(cpumask)[0];
mask &= ~(1 << smp_processor_id());
if (!mask)
return 0;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
data.started = mask;
data.wait = wait;
if (wait)
data.finished = mask;
spin_lock(&call_lock);
call_data = &data;
wmb();
/* Send a message to all other CPUs and wait for them to respond */
send_CPI(mask, VIC_CALL_FUNCTION_CPI);
/* Wait for response */
while (data.started)
barrier();
if (wait)
while (data.finished)
barrier();
spin_unlock(&call_lock);
return 0;
irq_enter();
generic_smp_call_function_single_interrupt();
__get_cpu_var(irq_stat).irq_call_count++;
irq_exit();
}
/* Sorry about the name. In an APIC based system, the APICs
@ -1094,6 +1024,12 @@ void smp_qic_call_function_interrupt(struct pt_regs *regs)
smp_call_function_interrupt();
}
void smp_qic_call_function_single_interrupt(struct pt_regs *regs)
{
ack_QIC_CPI(QIC_CALL_FUNCTION_SINGLE_CPI);
smp_call_function_single_interrupt();
}
void smp_vic_cpi_interrupt(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
@ -1114,6 +1050,8 @@ void smp_vic_cpi_interrupt(struct pt_regs *regs)
smp_enable_irq_interrupt();
if (test_and_clear_bit(VIC_CALL_FUNCTION_CPI, &vic_cpi_mailbox[cpu]))
smp_call_function_interrupt();
if (test_and_clear_bit(VIC_CALL_FUNCTION_SINGLE_CPI, &vic_cpi_mailbox[cpu]))
smp_call_function_single_interrupt();
set_irq_regs(old_regs);
}
@ -1129,7 +1067,7 @@ static void do_flush_tlb_all(void *info)
/* flush the TLB of every active CPU in the system */
void flush_tlb_all(void)
{
on_each_cpu(do_flush_tlb_all, 0, 1, 1);
on_each_cpu(do_flush_tlb_all, 0, 1);
}
/* send a reschedule CPI to one CPU by physical CPU number*/
@ -1161,7 +1099,7 @@ int safe_smp_processor_id(void)
/* broadcast a halt to all other CPUs */
static void voyager_smp_send_stop(void)
{
smp_call_function(smp_stop_cpu_function, NULL, 1, 1);
smp_call_function(smp_stop_cpu_function, NULL, 1);
}
/* this function is triggered in time.c when a clock tick fires
@ -1848,5 +1786,7 @@ struct smp_ops smp_ops = {
.smp_send_stop = voyager_smp_send_stop,
.smp_send_reschedule = voyager_smp_send_reschedule,
.smp_call_function_mask = voyager_smp_call_function_mask,
.send_call_func_ipi = native_send_call_func_ipi,
.send_call_func_single_ipi = native_send_call_func_single_ipi,
};

4
arch/x86/mm/pageattr.c
View file

@ -141,7 +141,7 @@ static void cpa_flush_all(unsigned long cache)
{
BUG_ON(irqs_disabled());
on_each_cpu(__cpa_flush_all, (void *) cache, 1, 1);
on_each_cpu(__cpa_flush_all, (void *) cache, 1);
}
static void __cpa_flush_range(void *arg)
@ -162,7 +162,7 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
BUG_ON(irqs_disabled());
WARN_ON(PAGE_ALIGN(start) != start);
on_each_cpu(__cpa_flush_range, NULL, 1, 1);
on_each_cpu(__cpa_flush_range, NULL, 1);
if (!cache)
return;

10
arch/x86/oprofile/nmi_int.c
View file

@ -218,8 +218,8 @@ static int nmi_setup(void)
}
}
on_each_cpu(nmi_save_registers, NULL, 0, 1);
on_each_cpu(nmi_cpu_setup, NULL, 0, 1);
on_each_cpu(nmi_save_registers, NULL, 1);
on_each_cpu(nmi_cpu_setup, NULL, 1);
nmi_enabled = 1;
return 0;
}
@ -271,7 +271,7 @@ static void nmi_shutdown(void)
{
struct op_msrs *msrs = &get_cpu_var(cpu_msrs);
nmi_enabled = 0;
on_each_cpu(nmi_cpu_shutdown, NULL, 0, 1);
on_each_cpu(nmi_cpu_shutdown, NULL, 1);
unregister_die_notifier(&profile_exceptions_nb);
model->shutdown(msrs);
free_msrs();
@ -286,7 +286,7 @@ static void nmi_cpu_start(void *dummy)
static int nmi_start(void)
{
on_each_cpu(nmi_cpu_start, NULL, 0, 1);
on_each_cpu(nmi_cpu_start, NULL, 1);
return 0;
}
@ -298,7 +298,7 @@ static void nmi_cpu_stop(void *dummy)
static void nmi_stop(void)
{
on_each_cpu(nmi_cpu_stop, NULL, 0, 1);
on_each_cpu(nmi_cpu_stop, NULL, 1);
}
struct op_counter_config counter_config[OP_MAX_COUNTER];

4
arch/x86/xen/enlighten.c
View file

@ -1214,7 +1214,9 @@ static const struct smp_ops xen_smp_ops __initdata = {
.smp_send_stop = xen_smp_send_stop,
.smp_send_reschedule = xen_smp_send_reschedule,
.smp_call_function_mask = xen_smp_call_function_mask,
.send_call_func_ipi = xen_smp_send_call_function_ipi,
.send_call_func_single_ipi = xen_smp_send_call_function_single_ipi,
};
#endif /* CONFIG_SMP */

2
arch/x86/xen/mmu.c
View file

@ -796,7 +796,7 @@ static void drop_mm_ref(struct mm_struct *mm)
}
if (!cpus_empty(mask))
xen_smp_call_function_mask(mask, drop_other_mm_ref, mm, 1);
smp_call_function_mask(mask, drop_other_mm_ref, mm, 1);
}
#else
static void drop_mm_ref(struct mm_struct *mm)

135
arch/x86/xen/smp.c
View file

@ -36,27 +36,14 @@
#include "mmu.h"
cpumask_t xen_cpu_initialized_map;
static DEFINE_PER_CPU(int, resched_irq) = -1;
static DEFINE_PER_CPU(int, callfunc_irq) = -1;
static DEFINE_PER_CPU(int, resched_irq);
static DEFINE_PER_CPU(int, callfunc_irq);
static DEFINE_PER_CPU(int, callfuncsingle_irq);
static DEFINE_PER_CPU(int, debug_irq) = -1;
/*
* Structure and data for smp_call_function(). This is designed to minimise
* static memory requirements. It also looks cleaner.
*/
static DEFINE_SPINLOCK(call_lock);
struct call_data_struct {
void (*func) (void *info);
void *info;
atomic_t started;
atomic_t finished;
int wait;
};
static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id);
static struct call_data_struct *call_data;
static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id);
/*
* Reschedule call back. Nothing to do,
@ -128,6 +115,17 @@ static int xen_smp_intr_init(unsigned int cpu)
goto fail;
per_cpu(debug_irq, cpu) = rc;
callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu);
rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR,
cpu,
xen_call_function_single_interrupt,
IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING,
callfunc_name,
NULL);
if (rc < 0)
goto fail;
per_cpu(callfuncsingle_irq, cpu) = rc;
return 0;
fail:
@ -137,6 +135,9 @@ static int xen_smp_intr_init(unsigned int cpu)
unbind_from_irqhandler(per_cpu(callfunc_irq, cpu), NULL);
if (per_cpu(debug_irq, cpu) >= 0)
unbind_from_irqhandler(per_cpu(debug_irq, cpu), NULL);
if (per_cpu(callfuncsingle_irq, cpu) >= 0)
unbind_from_irqhandler(per_cpu(callfuncsingle_irq, cpu), NULL);
return rc;
}
@ -336,7 +337,7 @@ static void stop_self(void *v)
void xen_smp_send_stop(void)
{
smp_call_function(stop_self, NULL, 0, 0);
smp_call_function(stop_self, NULL, 0);
}
void xen_smp_send_reschedule(int cpu)
@ -344,7 +345,6 @@ void xen_smp_send_reschedule(int cpu)
xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
}
static void xen_send_IPI_mask(cpumask_t mask, enum ipi_vector vector)
{
unsigned cpu;
@ -355,83 +355,42 @@ static void xen_send_IPI_mask(cpumask_t mask, enum ipi_vector vector)
xen_send_IPI_one(cpu, vector);
}
void xen_smp_send_call_function_ipi(cpumask_t mask)
{
int cpu;
xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
/* Make sure other vcpus get a chance to run if they need to. */
for_each_cpu_mask(cpu, mask) {
if (xen_vcpu_stolen(cpu)) {
HYPERVISOR_sched_op(SCHEDOP_yield, 0);
break;
}
}
}
void xen_smp_send_call_function_single_ipi(int cpu)
{
xen_send_IPI_mask(cpumask_of_cpu(cpu), XEN_CALL_FUNCTION_SINGLE_VECTOR);
}
static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
{
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
int wait = call_data->wait;
/*
* Notify initiating CPU that I've grabbed the data and am
* about to execute the function
*/
mb();
atomic_inc(&call_data->started);
/*
* At this point the info structure may be out of scope unless wait==1
*/
irq_enter();
(*func)(info);
generic_smp_call_function_interrupt();
__get_cpu_var(irq_stat).irq_call_count++;
irq_exit();
if (wait) {
mb(); /* commit everything before setting finished */
atomic_inc(&call_data->finished);
}
return IRQ_HANDLED;
}
int xen_smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait)
static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id)
{
struct call_data_struct data;
int cpus, cpu;
bool yield;
irq_enter();
generic_smp_call_function_single_interrupt();
__get_cpu_var(irq_stat).irq_call_count++;
irq_exit();
/* Holding any lock stops cpus from going down. */
spin_lock(&call_lock);
cpu_clear(smp_processor_id(), mask);
cpus = cpus_weight(mask);
if (!cpus) {
spin_unlock(&call_lock);
return 0;
}
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
data.wait = wait;
if (wait)
atomic_set(&data.finished, 0);
call_data = &data;
mb(); /* write everything before IPI */
/* Send a message to other CPUs and wait for them to respond */
xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
/* Make sure other vcpus get a chance to run if they need to. */
yield = false;
for_each_cpu_mask(cpu, mask)
if (xen_vcpu_stolen(cpu))
yield = true;
if (yield)
HYPERVISOR_sched_op(SCHEDOP_yield, 0);
/* Wait for response */
while (atomic_read(&data.started) != cpus ||
(wait && atomic_read(&data.finished) != cpus))
cpu_relax();
spin_unlock(&call_lock);
return 0;
return IRQ_HANDLED;
}

9
arch/x86/xen/xen-ops.h
View file

@ -55,13 +55,8 @@ void xen_smp_cpus_done(unsigned int max_cpus);
void xen_smp_send_stop(void);
void xen_smp_send_reschedule(int cpu);
int xen_smp_call_function (void (*func) (void *info), void *info, int nonatomic,
int wait);
int xen_smp_call_function_single(int cpu, void (*func) (void *info), void *info,
int nonatomic, int wait);
int xen_smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait);
void xen_smp_send_call_function_ipi(cpumask_t mask);
void xen_smp_send_call_function_single_ipi(int cpu);
extern cpumask_t xen_cpu_initialized_map;

2
drivers/acpi/processor_idle.c
View file

@ -1339,7 +1339,7 @@ static void smp_callback(void *v)
static int acpi_processor_latency_notify(struct notifier_block *b,
unsigned long l, void *v)
{
smp_call_function(smp_callback, NULL, 0, 1);
smp_call_function(smp_callback, NULL, 1);
return NOTIFY_OK;
}

2
drivers/char/agp/generic.c
View file

@ -1249,7 +1249,7 @@ static void ipi_handler(void *null)
void global_cache_flush(void)
{
if (on_each_cpu(ipi_handler, NULL, 1, 1) != 0)
if (on_each_cpu(ipi_handler, NULL, 1) != 0)
panic(PFX "timed out waiting for the other CPUs!\n");
}
EXPORT_SYMBOL(global_cache_flush);

2
drivers/char/sysrq.c
View file

@ -215,7 +215,7 @@ static void showacpu(void *dummy)
static void sysrq_showregs_othercpus(struct work_struct *dummy)
{
smp_call_function(showacpu, NULL, 0, 0);
smp_call_function(showacpu, NULL, 0);
}
static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus);

2
drivers/cpuidle/cpuidle.c
View file

@ -340,7 +340,7 @@ static void smp_callback(void *v)
static int cpuidle_latency_notify(struct notifier_block *b,
unsigned long l, void *v)
{
smp_call_function(smp_callback, NULL, 0, 1);
smp_call_function(smp_callback, NULL, 1);
return NOTIFY_OK;
}

4
drivers/lguest/x86/core.c
View file

@ -478,7 +478,7 @@ void __init lguest_arch_host_init(void)
cpu_had_pge = 1;
/* adjust_pge is a helper function which sets or unsets the PGE
* bit on its CPU, depending on the argument (0 == unset). */
on_each_cpu(adjust_pge, (void *)0, 0, 1);
on_each_cpu(adjust_pge, (void *)0, 1);
/* Turn off the feature in the global feature set. */
clear_bit(X86_FEATURE_PGE, boot_cpu_data.x86_capability);
}
@ -493,7 +493,7 @@ void __exit lguest_arch_host_fini(void)
if (cpu_had_pge) {
set_bit(X86_FEATURE_PGE, boot_cpu_data.x86_capability);
/* adjust_pge's argument "1" means set PGE. */
on_each_cpu(adjust_pge, (void *)1, 0, 1);
on_each_cpu(adjust_pge, (void *)1, 1);
}
put_online_cpus();
}

2
fs/buffer.c
View file

@ -1464,7 +1464,7 @@ static void invalidate_bh_lru(void *arg)
void invalidate_bh_lrus(void)
{
on_each_cpu(invalidate_bh_lru, NULL, 1, 1);
on_each_cpu(invalidate_bh_lru, NULL, 1);
}
EXPORT_SYMBOL_GPL(invalidate_bh_lrus);

5
include/asm-alpha/smp.h
View file

@ -47,12 +47,13 @@ extern struct cpuinfo_alpha cpu_data[NR_CPUS];
extern int smp_num_cpus;
#define cpu_possible_map cpu_present_map
int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, cpumask_t cpu);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
#else /* CONFIG_SMP */
#define hard_smp_processor_id() 0
#define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; })
#define smp_call_function_on_cpu(func,info,wait,cpu) ({ 0; })
#endif /* CONFIG_SMP */

3
include/asm-arm/smp.h
View file

@ -101,6 +101,9 @@ extern void platform_cpu_die(unsigned int cpu);
extern int platform_cpu_kill(unsigned int cpu);
extern void platform_cpu_enable(unsigned int cpu);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
/*
* Local timer interrupt handling function (can be IPI'ed).
*/

8
include/asm-ia64/smp.h
View file

@ -38,9 +38,6 @@ ia64_get_lid (void)
return lid.f.id << 8 | lid.f.eid;
}
extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait);
#define hard_smp_processor_id() ia64_get_lid()
#ifdef CONFIG_SMP
@ -124,11 +121,12 @@ extern void __init init_smp_config (void);
extern void smp_do_timer (struct pt_regs *regs);
extern void smp_send_reschedule (int cpu);
extern void lock_ipi_calllock(void);
extern void unlock_ipi_calllock(void);
extern void identify_siblings (struct cpuinfo_ia64 *);
extern int is_multithreading_enabled(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
#else /* CONFIG_SMP */
#define cpu_logical_id(i) 0

4
include/asm-m32r/smp.h
View file

@ -89,6 +89,9 @@ static __inline__ unsigned int num_booting_cpus(void)
extern void smp_send_timer(void);
extern unsigned long send_IPI_mask_phys(cpumask_t, int, int);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
#endif /* not __ASSEMBLY__ */
#define NO_PROC_ID (0xff) /* No processor magic marker */
@ -104,6 +107,7 @@ extern unsigned long send_IPI_mask_phys(cpumask_t, int, int);
#define LOCAL_TIMER_IPI (M32R_IRQ_IPI3-M32R_IRQ_IPI0)
#define INVALIDATE_CACHE_IPI (M32R_IRQ_IPI4-M32R_IRQ_IPI0)
#define CPU_BOOT_IPI (M32R_IRQ_IPI5-M32R_IRQ_IPI0)
#define CALL_FUNC_SINGLE_IPI (M32R_IRQ_IPI6-M32R_IRQ_IPI0)
#define IPI_SHIFT (0)
#define NR_IPIS (8)

13
include/asm-mips/smp.h
View file

@ -35,16 +35,6 @@ extern int __cpu_logical_map[NR_CPUS];
#define NO_PROC_ID (-1)
struct call_data_struct {
void (*func)(void *);
void *info;
atomic_t started;
atomic_t finished;
int wait;
};
extern struct call_data_struct *call_data;
#define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
#define SMP_CALL_FUNCTION 0x2
@ -67,4 +57,7 @@ static inline void smp_send_reschedule(int cpu)
extern asmlinkage void smp_call_function_interrupt(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
#endif /* __ASM_SMP_H */

3
include/asm-parisc/smp.h
View file

@ -30,6 +30,9 @@ extern cpumask_t cpu_online_map;
extern void smp_send_reschedule(int cpu);
extern void smp_send_all_nop(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
#endif /* !ASSEMBLY */
/*

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