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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 /kernel/sched/core.c | |
| parent | sched, idle: Fix the idle polling state logic (diff) | |
| download | linux-dev-4a2b4b222743bb07fedf985b884550f2ca067ea9.tar.xz linux-dev-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 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 242da0c03aba..fe89afac4d09 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2219,7 +2219,7 @@ void __kprobes add_preempt_count(int val) if (DEBUG_LOCKS_WARN_ON((preempt_count() < 0))) return; #endif - preempt_count() += val; + add_preempt_count_notrace(val); #ifdef CONFIG_DEBUG_PREEMPT /* * Spinlock count overflowing soon? @@ -2250,7 +2250,7 @@ void __kprobes sub_preempt_count(int val) if (preempt_count() == val) trace_preempt_on(CALLER_ADDR0, get_parent_ip(CALLER_ADDR1)); - preempt_count() -= val; + sub_preempt_count_notrace(val); } EXPORT_SYMBOL(sub_preempt_count); |