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authorDavidlohr Bueso <dave@stgolabs.net>2016-03-10 04:55:35 +0300
committerIngo Molnar <mingo@kernel.org>2016-03-10 12:28:35 +0300
commit90d1098478fb08a1ef166fe91622d8046869e17b (patch)
tree4fd95e75bb3bfef08e2dd33c290002b9c7c0077c /kernel/smp.c
parent6cbe9e4a228ce00b9fa10d56da6cb7985d7b10e9 (diff)
downloadlinux-90d1098478fb08a1ef166fe91622d8046869e17b.tar.xz
locking/csd_lock: Explicitly inline csd_lock*() helpers
While the compiler tends to already to it for us (except for csd_unlock), make it explicit. These helpers mainly deal with the ->flags, are short-lived and can be called, for example, from smp_call_function_many(). Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: dave@stgolabs.net Link: http://lkml.kernel.org/r/1457574936-19065-2-git-send-email-dbueso@suse.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/smp.c')
-rw-r--r--kernel/smp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/smp.c b/kernel/smp.c
index d903c02223af..5099db15c5fb 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -105,13 +105,13 @@ void __init call_function_init(void)
* previous function call. For multi-cpu calls its even more interesting
* as we'll have to ensure no other cpu is observing our csd.
*/
-static void csd_lock_wait(struct call_single_data *csd)
+static __always_inline void csd_lock_wait(struct call_single_data *csd)
{
while (smp_load_acquire(&csd->flags) & CSD_FLAG_LOCK)
cpu_relax();
}
-static void csd_lock(struct call_single_data *csd)
+static __always_inline void csd_lock(struct call_single_data *csd)
{
csd_lock_wait(csd);
csd->flags |= CSD_FLAG_LOCK;
@@ -124,7 +124,7 @@ static void csd_lock(struct call_single_data *csd)
smp_wmb();
}
-static void csd_unlock(struct call_single_data *csd)
+static __always_inline void csd_unlock(struct call_single_data *csd)
{
WARN_ON(!(csd->flags & CSD_FLAG_LOCK));