perf intel-pt: Fix sample timestamp wrt non-taken branches
authorAdrian Hunter <adrian.hunter@intel.com>
Fri, 10 May 2019 12:41:43 +0000 (15:41 +0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 16 May 2019 17:17:24 +0000 (14:17 -0300)
commit1b6599a9d8e6c9f7e9b0476012383b1777f7fc93
tree54bba364c23b4e795e08a6930761a0ce24da3ec3
parent61b6e08dc8e3ea80b7485c9b3f875ddd45c8466b
perf intel-pt: Fix sample timestamp wrt non-taken branches

The sample timestamp is updated to ensure that the timestamp represents
the time of the sample and not a branch that the decoder is still
walking towards. The sample timestamp is updated when the decoder
returns, but the decoder does not return for non-taken branches. Update
the sample timestamp then also.

Note that commit 3f04d98e972b5 ("perf intel-pt: Improve sample
timestamp") was also a stable fix and appears, for example, in v4.4
stable tree as commit a4ebb58fd124 ("perf intel-pt: Improve sample
timestamp").

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Fixes: 3f04d98e972b ("perf intel-pt: Improve sample timestamp")
Link: http://lkml.kernel.org/r/20190510124143.27054-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c