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SubjectRe: [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code
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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