path: root/kernel
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authorDavid Daney <>2013-09-11 14:23:26 -0700
committerLinus Torvalds <>2013-09-11 15:58:25 -0700
commitbff2dc42bcafdd75c0296987747f782965d691a0 (patch)
tree3e921a8fc93d7bff9a5ac1d5221be9f9938447e4 /kernel
parent081192b25c2d4620b5f5838620624d3daee94b66 (diff)
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 <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'kernel')
1 files changed, 11 insertions, 0 deletions
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,
+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;
* Note we still need to test the mask even for UP
* because we actually can get an empty mask from