perf record: Create a new option save_type in --branch-filter

The option indicates the kernel to save branch type during sampling.

One example:

  perf record -g --branch-filter any,save_type <command>

Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1500379995-6449-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index b0e9e92..9bdea04 100644 (file)
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -332,6 +332,7 @@ following filters are defined:
        - no_tx: only when the target is not in a hardware transaction
        - abort_tx: only when the target is a hardware transaction abort
        - cond: conditional branches
+       - save_type: save branch type during sampling in case binary is not available later
 
 +
 The option requires at least one branch type among any, any_call, any_ret, ind_call, cond.

diff --git a/tools/perf/util/parse-branch-options.c b/tools/perf/util/parse-branch-options.c
index 38fd115..e71fb5f 100644 (file)
--- a/tools/perf/util/parse-branch-options.c
+++ b/tools/perf/util/parse-branch-options.c
@@ -28,6 +28,7 @@ static const struct branch_mode branch_modes[] = {
        BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
        BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
        BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
+       BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
        BRANCH_END
 };