evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

perf intel-pt: Fix MTC timing after overflow

Browse source 
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>
This commit is contained in:
Adrian Hunter 2018-05-31 13:23:44 +03:00 • committed by Greg Kroah-Hartman
parent a6338a8135
commit eadc0ef12d
1 changed files with 0 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
View file

@ -1268,7 +1268,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder)
{ {
intel_pt_log("ERROR: Buffer overflow\n"); intel_pt_log("ERROR: Buffer overflow\n");
intel_pt_clear_tx_flags(decoder); intel_pt_clear_tx_flags(decoder);
decoder->have_tma = false;
decoder->cbr = 0; decoder->cbr = 0;
decoder->timestamp_insn_cnt = 0; decoder->timestamp_insn_cnt = 0;
decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC;