Re: [PATCH V7 01/25] perf header: Add AUX area tracing feature

From: Jiri Olsa
Date: Wed Apr 01 2015 - 07:49:26 EST


On Tue, Mar 31, 2015 at 02:38:30PM +0300, Adrian Hunter wrote:
> Add a feature to indicate that a perf.data file
> contains AUX area data.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>

Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>

> ---
> tools/perf/util/header.c | 14 ++++++++++++++
> tools/perf/util/header.h | 1 +
> 2 files changed, 15 insertions(+)
>
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index fb43215..c6739dd 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -869,6 +869,13 @@ static int write_branch_stack(int fd __maybe_unused,
> return 0;
> }
>
> +static int write_auxtrace(int fd __maybe_unused,
> + struct perf_header *h __maybe_unused,
> + struct perf_evlist *evlist __maybe_unused)
> +{
> + return 0;
> +}
> +
> static void print_hostname(struct perf_header *ph, int fd __maybe_unused,
> FILE *fp)
> {
> @@ -1163,6 +1170,12 @@ static void print_branch_stack(struct perf_header *ph __maybe_unused,
> fprintf(fp, "# contains samples with branch stack\n");
> }
>
> +static void print_auxtrace(struct perf_header *ph __maybe_unused,
> + int fd __maybe_unused, FILE *fp)
> +{
> + fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n");
> +}
> +
> static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused,
> FILE *fp)
> {
> @@ -1873,6 +1886,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
> FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
> FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings),
> FEAT_OPP(HEADER_GROUP_DESC, group_desc),
> + FEAT_OPA(HEADER_AUXTRACE, auxtrace),
> };
>
> struct header_print_data {
> diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
> index 3bb90ac..d4d5796 100644
> --- a/tools/perf/util/header.h
> +++ b/tools/perf/util/header.h
> @@ -30,6 +30,7 @@ enum {
> HEADER_BRANCH_STACK,
> HEADER_PMU_MAPPINGS,
> HEADER_GROUP_DESC,
> + HEADER_AUXTRACE,
> HEADER_LAST_FEATURE,
> HEADER_FEAT_BITS = 256,
> };
> --
> 1.9.1
>
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