Commit e72b52a2 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf intel-pt: Factor out intel_pt_8b_tsc() 



Factor out intel_pt_8b_tsc() so it can be reused.

Signed-off-by: default avatarAdrian 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 4d678e90

tools/perf/util/intel-pt-decoder/intel-pt-decoder.c

+17 −9
Original line number Diff line number Diff line
@@ -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;

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