Em Wed, Dec 23, 2015 at 02:07:03AM +0900, Namhyung Kim escreveu:
> Each tracepoint event has format string for print to improve
> readability. Try to parse the output and match the field name. If it
> finds one, use that for the result. If not, fallbacks to the original
> output.
>
> For example, sort on kmem:kmalloc.gfp_flags looks like below:
> (Note: libtraceevent plugins are not installed on my system. They might
> affect the output below)
>
> Before:
> # Overhead Command gfp_flags
> # ........ ....... ..........
> #
> 99.89% perf 32848
> 0.06% sleep 208
> 0.03% perf 32976
> 0.01% perf 208
>
> After:
> # Overhead Command gfp_flags
> # ........ ....... ...................
> #
> 99.89% perf GFP_NOFS|GFP_ZERO
> 0.06% sleep GFP_KERNEL
> 0.03% perf GFP_KERNEL|GFP_ZERO
> 0.01% perf GFP_KERNEL
>
> Cc: Steven Rostedt <[email protected]>
> Signed-off-by: Namhyung Kim <[email protected]>
> ---
> tools/perf/util/hist.c | 1 +
> tools/perf/util/sort.c | 105
> ++++++++++++++++++++++++++++++++++++++++++++++---
> tools/perf/util/sort.h | 1 +
> 3 files changed, 102 insertions(+), 5 deletions(-)
>
> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
> index c0c92a3daa69..ef1a4a5cc610 100644
> --- a/tools/perf/util/hist.c
> +++ b/tools/perf/util/hist.c
> @@ -978,6 +978,7 @@ void hist_entry__delete(struct hist_entry *he)
> if (he->srcfile && he->srcfile[0])
> free(he->srcfile);
> free_callchain(he->callchain);
> + free(he->trace_output);
> free(he);
> }
This clashed with an updated patch earlier in this this patchkit
("[PATCH v4.1 02/13] perf hist: Save raw_data/size for tracepoint events"),
fixing it.
- Arnaldo
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