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| author | David Daney <david.daney@cavium.com> | 2013-09-11 14:23:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:58:25 -0700 |
| commit | bff2dc42bcafdd75c0296987747f782965d691a0 (patch) | |
| tree | 3e921a8fc93d7bff9a5ac1d5221be9f9938447e4 | |
| parent | 081192b25c2d4620b5f5838620624d3daee94b66 (diff) | |
| download | lwn-bff2dc42bcafdd75c0296987747f782965d691a0.tar.gz lwn-bff2dc42bcafdd75c0296987747f782965d691a0.zip | |
smp.h: move !SMP version of on_each_cpu() out-of-line
All of the other non-trivial !SMP versions of functions in smp.h are
out-of-line in up.c. Move on_each_cpu() there as well.
This allows us to get rid of the #include <linux/irqflags.h>. The
drawback is that this makes both the x86_64 and i386 defconfig !SMP
kernels about 200 bytes larger each.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/smp.h | 21 | ||||
| -rw-r--r-- | kernel/up.c | 11 |
2 files changed, 16 insertions, 16 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h index 3724a9070907..cfb7ca094b38 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -11,7 +11,6 @@ #include <linux/list.h> #include <linux/cpumask.h> #include <linux/init.h> -#include <linux/irqflags.h> extern void cpu_idle(void); @@ -30,6 +29,11 @@ int smp_call_function_single(int cpuid, smp_call_func_t func, void *info, int wait); /* + * Call a function on all processors + */ +int on_each_cpu(smp_call_func_t func, void *info, int wait); + +/* * Call a function on processors specified by mask, which might include * the local one. */ @@ -112,11 +116,6 @@ static inline void call_function_init(void) { } #endif /* - * Call a function on all processors - */ -int on_each_cpu(smp_call_func_t func, void *info, int wait); - -/* * Mark the boot cpu "online" so that it can call console drivers in * printk() and can access its per-cpu storage. */ @@ -141,16 +140,6 @@ static inline int up_smp_call_function(smp_call_func_t func, void *info) #define smp_call_function(func, info, wait) \ (up_smp_call_function(func, info)) -static inline int on_each_cpu(smp_call_func_t func, void *info, int wait) -{ - unsigned long flags; - - local_irq_save(flags); - func(info); - local_irq_restore(flags); - return 0; -} - static inline void smp_send_reschedule(int cpu) { } #define smp_prepare_boot_cpu() do {} while (0) #define smp_call_function_many(mask, func, info, wait) \ diff --git a/kernel/up.c b/kernel/up.c index b1cf036255f3..630d72bf7e41 100644 --- a/kernel/up.c +++ b/kernel/up.c @@ -22,6 +22,17 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, } EXPORT_SYMBOL(smp_call_function_single); +int on_each_cpu(smp_call_func_t func, void *info, int wait) +{ + unsigned long flags; + + local_irq_save(flags); + func(info); + local_irq_restore(flags); + return 0; +} +EXPORT_SYMBOL(on_each_cpu); + /* * Note we still need to test the mask even for UP * because we actually can get an empty mask from |