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| author | Adrian Hunter <adrian.hunter@intel.com> | 2018-05-31 13:23:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:25:01 +0200 |
| commit | 65a163984abe6450c0f7f957581c1a8fc019e946 (patch) | |
| tree | 25fa892b99258a64c8d81100d2695f2b915b857a | |
| parent | e1587f178eb14ae98443494adafde35b8ac6f43c (diff) | |
| download | linux-stable-65a163984abe6450c0f7f957581c1a8fc019e946.tar.gz linux-stable-65a163984abe6450c0f7f957581c1a8fc019e946.tar.bz2 linux-stable-65a163984abe6450c0f7f957581c1a8fc019e946.zip | |
perf intel-pt: Fix MTC timing after overflow
commit dd27b87ab5fcf3ea1c060b5e3ab5d31cc78e9f4c upstream.
On some platforms, overflows will clear before MTC wraparound, and there
is no following TSC/TMA packet. In that case the previous TMA is valid.
Since there will be a valid TMA either way, stop setting 'have_tma' to
false upon overflow.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1527762225-26024-4-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index e5eb91777383..881d7c5e5e2a 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1376,7 +1376,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder) { intel_pt_log("ERROR: Buffer overflow\n"); intel_pt_clear_tx_flags(decoder); - decoder->have_tma = false; decoder->cbr = 0; decoder->timestamp_insn_cnt = 0; decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; |