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| author | Davidlohr Bueso <dave@stgolabs.net> | 2016-03-09 17:55:35 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-03-10 10:28:35 +0100 |
| commit | 90d1098478fb08a1ef166fe91622d8046869e17b (patch) | |
| tree | 4fd95e75bb3bfef08e2dd33c290002b9c7c0077c /kernel/smp.c | |
| parent | 6cbe9e4a228ce00b9fa10d56da6cb7985d7b10e9 (diff) | |
| download | lwn-90d1098478fb08a1ef166fe91622d8046869e17b.tar.gz lwn-90d1098478fb08a1ef166fe91622d8046869e17b.zip | |
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.c | 6 |
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)); |