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| author | Peter Zijlstra <peterz@infradead.org> | 2013-08-14 14:55:24 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-09-25 14:07:32 +0200 |
| commit | 4a2b4b222743bb07fedf985b884550f2ca067ea9 (patch) | |
| tree | 587e80512c6cdf727b27d0f806758833547a65ed /lib/smp_processor_id.c | |
| parent | ea8117478918a4734586d35ff530721b682425be (diff) | |
| download | lwn-4a2b4b222743bb07fedf985b884550f2ca067ea9.tar.gz lwn-4a2b4b222743bb07fedf985b884550f2ca067ea9.zip | |
sched: Introduce preempt_count accessor functions
Replace the single preempt_count() 'function' that's an lvalue with
two proper functions:
preempt_count() - returns the preempt_count value as rvalue
preempt_count_set() - Allows setting the preempt-count value
Also provide preempt_count_ptr() as a convenience wrapper to implement
all modifying operations.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-orxrbycjozopqfhb4dxdkdvb@git.kernel.org
[ Fixed build failure. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/smp_processor_id.c')
| -rw-r--r-- | lib/smp_processor_id.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c index 4c0d0e51d49e..04abe53f12a1 100644 --- a/lib/smp_processor_id.c +++ b/lib/smp_processor_id.c @@ -9,10 +9,9 @@ notrace unsigned int debug_smp_processor_id(void) { - unsigned long preempt_count = preempt_count(); int this_cpu = raw_smp_processor_id(); - if (likely(preempt_count)) + if (likely(preempt_count())) goto out; if (irqs_disabled()) |