perf header: Add AUX area tracing feature

Add a feature to indicate that a perf.data file contains AUX area data.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1428594864-29309-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 918fd8ae2d80..589c28028379 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)
 {
@@ -1151,6 +1158,12 @@ 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)
 {
@@ -1861,6 +1874,7 @@ 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 {