sched: Move cpu masks from kernel/sched.c into kernel/cpu.c
kernel/cpu.c seems a more logical place for those maps since they do not really have much to do with the scheduler these days. kernel/cpu.c is now built for the UP kernel too, but it does not affect the size the kernel sections. $ size vmlinux before text data bss dec hex filename 3313797 307060 310352 3931209 3bfc49 vmlinux after text data bss dec hex filename 3313797 307060 310352 3931209 3bfc49 vmlinux Signed-off-by: Max Krasnyansky <maxk@qualcomm.com> Cc: pj@sgi.com Cc: menage@google.com Cc: rostedt@goodmis.org Cc: mingo@elte.hu Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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3 changed files with 26 additions and 20 deletions
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@ -3,7 +3,7 @@
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#
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obj-y = sched.o fork.o exec_domain.o panic.o printk.o profile.o \
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exit.o itimer.o time.o softirq.o resource.o \
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cpu.o exit.o itimer.o time.o softirq.o resource.o \
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sysctl.o capability.o ptrace.o timer.o user.o \
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signal.o sys.o kmod.o workqueue.o pid.o \
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rcupdate.o extable.o params.o posix-timers.o \
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@ -27,7 +27,7 @@ obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
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obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
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obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
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obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
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obj-$(CONFIG_SMP) += cpu.o spinlock.o
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obj-$(CONFIG_SMP) += spinlock.o
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obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
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obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
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obj-$(CONFIG_UID16) += uid16.o
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24
kernel/cpu.c
24
kernel/cpu.c
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@ -15,6 +15,28 @@
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#include <linux/stop_machine.h>
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#include <linux/mutex.h>
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/*
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* Represents all cpu's present in the system
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* In systems capable of hotplug, this map could dynamically grow
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* as new cpu's are detected in the system via any platform specific
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* method, such as ACPI for e.g.
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*/
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cpumask_t cpu_present_map __read_mostly;
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EXPORT_SYMBOL(cpu_present_map);
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#ifndef CONFIG_SMP
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/*
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* Represents all cpu's that are currently online.
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*/
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cpumask_t cpu_online_map __read_mostly = CPU_MASK_ALL;
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EXPORT_SYMBOL(cpu_online_map);
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cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;
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EXPORT_SYMBOL(cpu_possible_map);
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#else /* CONFIG_SMP */
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/* Serializes the updates to cpu_online_map, cpu_present_map */
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static DEFINE_MUTEX(cpu_add_remove_lock);
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@ -403,3 +425,5 @@ void __ref enable_nonboot_cpus(void)
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cpu_maps_update_done();
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}
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#endif /* CONFIG_PM_SLEEP_SMP */
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#endif /* CONFIG_SMP */
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@ -5080,24 +5080,6 @@ asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
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return sched_setaffinity(pid, &new_mask);
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}
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/*
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* Represents all cpu's present in the system
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* In systems capable of hotplug, this map could dynamically grow
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* as new cpu's are detected in the system via any platform specific
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* method, such as ACPI for e.g.
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*/
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cpumask_t cpu_present_map __read_mostly;
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EXPORT_SYMBOL(cpu_present_map);
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#ifndef CONFIG_SMP
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cpumask_t cpu_online_map __read_mostly = CPU_MASK_ALL;
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EXPORT_SYMBOL(cpu_online_map);
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cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;
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EXPORT_SYMBOL(cpu_possible_map);
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#endif
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long sched_getaffinity(pid_t pid, cpumask_t *mask)
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{
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struct task_struct *p;
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