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authorPeter Zijlstra <peterz@infradead.org>2013-09-10 12:15:23 +0200
committerIngo Molnar <mingo@kernel.org>2013-09-25 14:07:54 +0200
commitbdb43806589096ac4272fe1307e789846ac08d7c (patch)
treec854e7e508193766d5cbdd82e8709cfab5ea3be5 /kernel/softirq.c
parent01028747559ac6c6f642a7bbd2875cc4f66b2feb (diff)
downloadlinux-bdb43806589096ac4272fe1307e789846ac08d7c.tar.bz2
sched: Extract the basic add/sub preempt_count modifiers
Rewrite the preempt_count macros in order to extract the 3 basic preempt_count value modifiers: __preempt_count_add() __preempt_count_sub() and the new: __preempt_count_dec_and_test() And since we're at it anyway, replace the unconventional $op_preempt_count names with the more conventional preempt_count_$op. Since these basic operators are equivalent to the previous _notrace() variants, do away with the _notrace() versions. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-ewbpdbupy9xpsjhg960zwbv8@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index a90de70cf1f3..3e88612fc87e 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -100,13 +100,13 @@ static void __local_bh_disable(unsigned long ip, unsigned int cnt)
raw_local_irq_save(flags);
/*
- * The preempt tracer hooks into add_preempt_count and will break
+ * The preempt tracer hooks into preempt_count_add and will break
* lockdep because it calls back into lockdep after SOFTIRQ_OFFSET
* is set and before current->softirq_enabled is cleared.
* We must manually increment preempt_count here and manually
* call the trace_preempt_off later.
*/
- add_preempt_count_notrace(cnt);
+ __preempt_count_add(cnt);
/*
* Were softirqs turned off above:
*/
@@ -120,7 +120,7 @@ static void __local_bh_disable(unsigned long ip, unsigned int cnt)
#else /* !CONFIG_TRACE_IRQFLAGS */
static inline void __local_bh_disable(unsigned long ip, unsigned int cnt)
{
- add_preempt_count(cnt);
+ preempt_count_add(cnt);
barrier();
}
#endif /* CONFIG_TRACE_IRQFLAGS */
@@ -139,7 +139,7 @@ static void __local_bh_enable(unsigned int cnt)
if (softirq_count() == cnt)
trace_softirqs_on(_RET_IP_);
- sub_preempt_count(cnt);
+ preempt_count_sub(cnt);
}
/*
@@ -169,12 +169,12 @@ static inline void _local_bh_enable_ip(unsigned long ip)
* Keep preemption disabled until we are done with
* softirq processing:
*/
- sub_preempt_count(SOFTIRQ_DISABLE_OFFSET - 1);
+ preempt_count_sub(SOFTIRQ_DISABLE_OFFSET - 1);
if (unlikely(!in_interrupt() && local_softirq_pending()))
do_softirq();
- dec_preempt_count();
+ preempt_count_dec();
#ifdef CONFIG_TRACE_IRQFLAGS
local_irq_enable();
#endif
@@ -360,7 +360,7 @@ void irq_exit(void)
account_irq_exit_time(current);
trace_hardirq_exit();
- sub_preempt_count(HARDIRQ_OFFSET);
+ preempt_count_sub(HARDIRQ_OFFSET);
if (!in_interrupt() && local_softirq_pending())
invoke_softirq();