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tracing: Fix preemptirqsoff tracer to not stop at preempt off

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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>
This commit is contained in:
Steven Rostedt 2011-09-22 11:11:51 -04:00 committed by Steven Rostedt
parent 6249687f76
commit e36de1de4a
1 changed files with 2 additions and 2 deletions
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4
kernel/trace/trace_irqsoff.c
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@ -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 */