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perf intel-pt: Factor out intel_pt_8b_tsc() 

Factor out intel_pt_8b_tsc() so it can be reused.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2019-06-04 16:00:03 +03:00 committed by Arnaldo Carvalho de Melo
parent 4d678e9039
commit e72b52a2cf
1 changed files with 17 additions and 9 deletions
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26
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
View File

@ -1369,6 +1369,21 @@ static int intel_pt_mode_tsx(struct intel_pt_decoder *decoder, bool *no_tip)
return 0;
}
static uint64_t intel_pt_8b_tsc(uint64_t timestamp, uint64_t ref_timestamp)
{
timestamp |= (ref_timestamp & (0xffULL << 56));
if (timestamp < ref_timestamp) {
if (ref_timestamp - timestamp > (1ULL << 55))
timestamp += (1ULL << 56);
} else {
if (timestamp - ref_timestamp > (1ULL << 55))
timestamp -= (1ULL << 56);
}
return timestamp;
}
static void intel_pt_calc_tsc_timestamp(struct intel_pt_decoder *decoder)
{
uint64_t timestamp;
@ -1376,15 +1391,8 @@ static void intel_pt_calc_tsc_timestamp(struct intel_pt_decoder *decoder)
decoder->have_tma = false;
if (decoder->ref_timestamp) {
timestamp = decoder->packet.payload |
(decoder->ref_timestamp & (0xffULL << 56));
if (timestamp < decoder->ref_timestamp) {
if (decoder->ref_timestamp - timestamp > (1ULL << 55))
timestamp += (1ULL << 56);
} else {
if (timestamp - decoder->ref_timestamp > (1ULL << 55))
timestamp -= (1ULL << 56);
}
timestamp = intel_pt_8b_tsc(decoder->packet.payload,
decoder->ref_timestamp);
decoder->tsc_timestamp = timestamp;
decoder->timestamp = timestamp;
decoder->ref_timestamp = 0;