perf tools: Add kernel AUX area sampling definitions

Add kernel AUX area sampling definitions, which brings perf_event.h into
line with the kernel version.

New sample type PERF_SAMPLE_AUX requests a sample of the AUX area
buffer.  New perf_event_attr member 'aux_sample_size' specifies the
desired size of the sample.

Also add support for parsing samples containing AUX area data i.e.
PERF_SAMPLE_AUX.

Committer notes:

I squashed the first two patches in this series to avoid breaking
automatic bisection, i.e. after applying only the original first patch
in this series we would have:

  # perf test -v parsing
  26: Sample parsing                                        :
  --- start ---
  test child forked, pid 17018
  sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating
  test child finished with -1
  ---- end ----
  Sample parsing: FAILED!
  #

With the two paches combined:

  # perf test parsing
  26: Sample parsing                                        : Ok
  #

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index a0a0c91cde4a..85223159737c 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -114,6 +114,11 @@ enum {
 
 #define MAX_INSN 16
 
+struct aux_sample {
+	u64 size;
+	void *data;
+};
+
 struct perf_sample {
 	u64 ip;
 	u32 pid, tid;
@@ -142,6 +147,7 @@ struct perf_sample {
 	struct regs_dump  intr_regs;
 	struct stack_dump user_stack;
 	struct sample_read read;
+	struct aux_sample aux_sample;
 };
 
 #define PERF_MEM_DATA_SRC_NONE \