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[S390] More cleanup for struct _lowcore

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Remove cpu_id from lowcore and replace addr_t with __u64.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2010-05-17 10:00:00 +02:00 committed by Martin Schwidefsky
parent e40152ee1e
commit 94038a9911
6 changed files with 57 additions and 60 deletions
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48
arch/s390/include/asm/lowcore.h
View file

@ -126,16 +126,15 @@ struct _lowcore {
__u32 user_exec_asce; /* 0x02ac */
/* SMP info area */
struct cpuid cpu_id; /* 0x02b0 */
__u32 cpu_nr; /* 0x02b8 */
__u32 softirq_pending; /* 0x02bc */
__u32 percpu_offset; /* 0x02c0 */
__u32 ext_call_fast; /* 0x02c4 */
__u64 int_clock; /* 0x02c8 */
__u64 clock_comparator; /* 0x02d0 */
__u32 machine_flags; /* 0x02d8 */
__u32 ftrace_func; /* 0x02dc */
__u8 pad_0x02e0[0x0300-0x02e0]; /* 0x02e0 */
__u32 cpu_nr; /* 0x02b0 */
__u32 softirq_pending; /* 0x02b4 */
__u32 percpu_offset; /* 0x02b8 */
__u32 ext_call_fast; /* 0x02bc */
__u64 int_clock; /* 0x02c0 */
__u64 clock_comparator; /* 0x02c8 */
__u32 machine_flags; /* 0x02d0 */
__u32 ftrace_func; /* 0x02d4 */
__u8 pad_0x02d8[0x0300-0x02d8]; /* 0x02d8 */
/* Interrupt response block */
__u8 irb[64]; /* 0x0300 */
@ -189,14 +188,14 @@ struct _lowcore {
__u32 data_exc_code; /* 0x0090 */
__u16 mon_class_num; /* 0x0094 */
__u16 per_perc_atmid; /* 0x0096 */
addr_t per_address; /* 0x0098 */
__u64 per_address; /* 0x0098 */
__u8 exc_access_id; /* 0x00a0 */
__u8 per_access_id; /* 0x00a1 */
__u8 op_access_id; /* 0x00a2 */
__u8 ar_access_id; /* 0x00a3 */
__u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */
addr_t trans_exc_code; /* 0x00a8 */
addr_t monitor_code; /* 0x00b0 */
__u64 trans_exc_code; /* 0x00a8 */
__u64 monitor_code; /* 0x00b0 */
__u16 subchannel_id; /* 0x00b8 */
__u16 subchannel_nr; /* 0x00ba */
__u32 io_int_parm; /* 0x00bc */
@ -207,7 +206,7 @@ struct _lowcore {
__u32 mcck_interruption_code[2]; /* 0x00e8 */
__u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
__u32 external_damage_code; /* 0x00f4 */
addr_t failing_storage_address; /* 0x00f8 */
__u64 failing_storage_address; /* 0x00f8 */
__u8 pad_0x0100[0x0110-0x0100]; /* 0x0100 */
__u64 breaking_event_addr; /* 0x0110 */
__u8 pad_0x0118[0x0120-0x0118]; /* 0x0118 */
@ -255,17 +254,16 @@ struct _lowcore {
__u64 user_exec_asce; /* 0x0318 */
/* SMP info area */
struct cpuid cpu_id; /* 0x0320 */
__u32 cpu_nr; /* 0x0328 */
__u32 softirq_pending; /* 0x032c */
__u64 percpu_offset; /* 0x0330 */
__u64 ext_call_fast; /* 0x0338 */
__u64 int_clock; /* 0x0340 */
__u64 clock_comparator; /* 0x0348 */
__u64 vdso_per_cpu_data; /* 0x0350 */
__u64 machine_flags; /* 0x0358 */
__u64 ftrace_func; /* 0x0360 */
__u8 pad_0x0368[0x0380-0x0368]; /* 0x0368 */
__u32 cpu_nr; /* 0x0320 */
__u32 softirq_pending; /* 0x0324 */
__u64 percpu_offset; /* 0x0328 */
__u64 ext_call_fast; /* 0x0330 */
__u64 int_clock; /* 0x0338 */
__u64 clock_comparator; /* 0x0340 */
__u64 vdso_per_cpu_data; /* 0x0348 */
__u64 machine_flags; /* 0x0350 */
__u64 ftrace_func; /* 0x0358 */
__u8 pad_0x0368[0x0380-0x0360]; /* 0x0360 */
/* Interrupt response block. */
__u8 irb[64]; /* 0x0380 */

1
arch/s390/kernel/asm-offsets.c
View file

@ -126,7 +126,6 @@ int main(void)
DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce));
DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce));
DEFINE(__LC_CPUID, offsetof(struct _lowcore, cpu_id));
DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func));

4
arch/s390/kernel/head.S
View file

@ -328,8 +328,8 @@ iplstart:
#
# reset files in VM reader
#
stidp __LC_CPUID # store cpuid
tm __LC_CPUID,0xff # running VM ?
stidp __LC_SAVE_AREA # store cpuid
tm __LC_SAVE_AREA,0xff # running VM ?
bno .Lnoreset
la %r2,.Lreset
lhi %r3,26

37
arch/s390/kernel/processor.c
View file

@ -18,24 +18,42 @@
#include <asm/lowcore.h>
#include <asm/param.h>
static DEFINE_PER_CPU(struct cpuid, cpu_id);
/*
* cpu_init - initializes state that is per-CPU.
*/
void __cpuinit cpu_init(void)
{
struct cpuid *id = &per_cpu(cpu_id, smp_processor_id());
get_cpu_id(id);
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
}
/*
* print_cpu_info - print basic information about a cpu
*/
void __cpuinit print_cpu_info(void)
{
struct cpuid *id = &per_cpu(cpu_id, smp_processor_id());
pr_info("Processor %d started, address %d, identification %06X\n",
S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
S390_lowcore.cpu_id.ident);
S390_lowcore.cpu_nr, S390_lowcore.cpu_addr, id->ident);
}
/*
* show_cpuinfo - Get information on one CPU for use by procfs.
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
static const char *hwcap_str[10] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat", "etf3eh", "highgprs"
};
struct _lowcore *lc;
unsigned long n = (unsigned long) v - 1;
int i;
@ -55,19 +73,12 @@ static int show_cpuinfo(struct seq_file *m, void *v)
}
if (cpu_online(n)) {
#ifdef CONFIG_SMP
lc = (smp_processor_id() == n) ?
&S390_lowcore : lowcore_ptr[n];
#else
lc = &S390_lowcore;
#endif
struct cpuid *id = &per_cpu(cpu_id, n);
seq_printf(m, "processor %li: "
"version = %02X, "
"identification = %06X, "
"machine = %04X\n",
n, lc->cpu_id.version,
lc->cpu_id.ident,
lc->cpu_id.machine);
n, id->version, id->ident, id->machine);
}
preempt_enable();
return 0;

20
arch/s390/kernel/setup.c
View file

@ -112,22 +112,6 @@ static struct resource data_resource = {
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
};
/*
* cpu_init() initializes state that is per-CPU.
*/
void __cpuinit cpu_init(void)
{
/*
* Store processor id in lowcore (used e.g. in timer_interrupt)
*/
get_cpu_id(&S390_lowcore.cpu_id);
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
}
/*
* condev= and conmode= setup parameter.
*/
@ -695,6 +679,7 @@ static void __init setup_hwcaps(void)
static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
unsigned long long facility_list_extended;
unsigned int facility_list;
struct cpuid cpu_id;
int i;
facility_list = stfl();
@ -756,7 +741,8 @@ static void __init setup_hwcaps(void)
*/
elf_hwcap |= HWCAP_S390_HIGH_GPRS;
switch (S390_lowcore.cpu_id.machine) {
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {
case 0x9672:
#if !defined(CONFIG_64BIT)
default: /* Use "g5" as default for 31 bit kernels. */

7
drivers/s390/cio/css.c
View file

@ -648,6 +648,8 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
static void __init
css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
{
struct cpuid cpu_id;
if (css_general_characteristics.mcss) {
css->global_pgid.pgid_high.ext_cssid.version = 0x80;
css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid;
@ -658,8 +660,9 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
css->global_pgid.pgid_high.cpu_addr = 0;
#endif
}
css->global_pgid.cpu_id = S390_lowcore.cpu_id.ident;
css->global_pgid.cpu_model = S390_lowcore.cpu_id.machine;
get_cpu_id(&cpu_id);
css->global_pgid.cpu_id = cpu_id.ident;
css->global_pgid.cpu_model = cpu_id.machine;
css->global_pgid.tod_high = tod_high;
}