Re: [PATCH -tip ] [BUGFIX]: Fix to add a missing pair of braces for error path.
From: Namhyung Kim
Date: Tue Jun 24 2014 - 03:40:59 EST
Hi Masami,
On Mon, 23 Jun 2014 03:17:12 +0000, Masami Hiramatsu wrote:
> Fix to add a missing pair of braces for error path.
> Commit 36d789a4d75f (perf probe: Improve error message for
> unknown member of data structure) introduced this bug.
>
> Without this fix, defining an event with global variables
> is always failed, because it always returns -ENOENT if
> the argument is not a local variable.
>
> ----
> # perf probe -na "vfs_read smp_found_config"
> Error: Failed to add events.
> ----
>
> With this fix, you can set a global variable for the
> argument of new event.
>
> ----
> # perf probe -na "vfs_read smp_found_config"
> Added new event:
> probe:vfs_read (on vfs_read with smp_found_config)
>
> You can now use it in all perf tools, such as:
>
> perf record -e probe:vfs_read -aR sleep 1
> ----
>
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
> Reported-by: Patrick Palka <patrick@xxxxxxxxxxxx>
> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Cc: Paul Mackerras <paulus@xxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Thanks,
Namhyung
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