ftrace: trace_pipe implement NONBLOCK

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This patch implements "NONBLOCK" for trace_pipe. If the trace_pipe is opened
with O_NONBLOCK, then the trace_pipe read will not block when buffer is empty.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Steven Rostedt 2008-05-12 21:20:58 +02:00 • committed by Thomas Gleixner

parent 845279972f

commit 2dc8f09571

1 changed files with 4 additions and 0 deletions

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kernel/trace/trace.c

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