| Date | Thu, 19 Jan 2012 17:31:28 +0100 | From | Frederic Weisbecker <> | Subject | Re: [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code |
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On Wed, Jan 18, 2012 at 07:44:29PM +0100, Jiri Olsa wrote: > Currently the ftrace_set_filter and ftrace_set_notrace functions > do not return any return code. So there's no way for ftrace_ops > user to tell wether the filter was correctly applied. > > The set_ftrace_filter interface returns error in case the filter > did not match: > > # echo krava > set_ftrace_filter > bash: echo: write error: Invalid argument > > Changing both ftrace_set_filter and ftrace_set_notrace functions > to return zero if the filter was applied correctly or -E* values > in case of error. > > Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
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