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authorAndrew Morton <akpm@linux-foundation.org>2013-07-04 02:00:41 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-04 03:07:22 +0400
commitc846ef7deba2d4f75138cf6a4b137b7e0e7659af (patch)
tree58785c1483290e6649e2d4324d4acac16ddaf41e /include/linux/smp.h
parent1873e50028ce87dd9014049c86d71a898fa02166 (diff)
downloadlinux-c846ef7deba2d4f75138cf6a4b137b7e0e7659af.tar.xz
include/linux/smp.h:on_each_cpu(): switch back to a macro
Commit f21afc25f9ed ("smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu()") converted on_each_cpu() to a C function. This required inclusion of irqflags.h, which broke ia64 and mn10300 (at least) due to header ordering hell. Switch on_each_cpu() back to a macro to fix this. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: David Daney <david.daney@cavium.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: <stable@vger.kernel.org> [3.10.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/smp.h')
-rw-r--r--include/linux/smp.h20
1 files changed, 8 insertions, 12 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h
index c8488763277f..c181399f2c20 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);
@@ -140,17 +139,14 @@ 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;
-}
-
+#define on_each_cpu(func, info, wait) \
+ ({ \
+ unsigned long __flags; \
+ local_irq_save(__flags); \
+ func(info); \
+ local_irq_restore(__flags); \
+ 0; \
+ })
/*
* Note we still need to test the mask even for UP
* because we actually can get an empty mask from