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authorSteven Rostedt <srostedt@redhat.com>2011-09-22 11:11:51 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-09-22 11:11:51 -0400
commite36de1de4a5f95b7cb3e5c37d10e6bbb91833ef0 (patch)
tree69eab1dc497ec8cb25dfbe6bd98da7656a50c878 /kernel
parent6249687f76b69cc0b2ad34636f4a18d693ef3262 (diff)
downloadop-kernel-dev-e36de1de4a5f95b7cb3e5c37d10e6bbb91833ef0.zip
op-kernel-dev-e36de1de4a5f95b7cb3e5c37d10e6bbb91833ef0.tar.gz
tracing: Fix preemptirqsoff tracer to not stop at preempt off
If irqs are disabled when preemption count reaches zero, the preemptirqsoff tracer should not flag that as the end. When interrupts are enabled and preemption count is not zero the preemptirqsoff correctly continues its tracing. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_irqsoff.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 667aa8c..a1a3359 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -505,13 +505,13 @@ EXPORT_SYMBOL(trace_hardirqs_off_caller);
#ifdef CONFIG_PREEMPT_TRACER
void trace_preempt_on(unsigned long a0, unsigned long a1)
{
- if (preempt_trace())
+ if (preempt_trace() && !irq_trace())
stop_critical_timing(a0, a1);
}
void trace_preempt_off(unsigned long a0, unsigned long a1)
{
- if (preempt_trace())
+ if (preempt_trace() && !irq_trace())
start_critical_timing(a0, a1);
}
#endif /* CONFIG_PREEMPT_TRACER */
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