perf intel-pt: Add decoder support for CBR events
Add decoder support for informing the tools of changes to the core-to-bus ratio (CBR). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-16-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -141,6 +141,7 @@ struct intel_pt_decoder {
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int pkt_len;
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int last_packet_type;
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unsigned int cbr;
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unsigned int cbr_seen;
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unsigned int max_non_turbo_ratio;
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double max_non_turbo_ratio_fp;
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double cbr_cyc_to_tsc;
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@ -167,6 +168,7 @@ struct intel_pt_decoder {
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uint64_t fup_ptw_payload;
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uint64_t fup_mwait_payload;
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uint64_t fup_pwre_payload;
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uint64_t cbr_payload;
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uint64_t timestamp_insn_cnt;
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uint64_t sample_insn_cnt;
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uint64_t stuck_ip;
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@ -1446,6 +1448,8 @@ static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder)
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{
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unsigned int cbr = decoder->packet.payload & 0xff;
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decoder->cbr_payload = decoder->packet.payload;
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if (decoder->cbr == cbr)
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return;
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@ -1806,6 +1810,16 @@ next:
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case INTEL_PT_CBR:
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intel_pt_calc_cbr(decoder);
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if (!decoder->branch_enable &&
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decoder->cbr != decoder->cbr_seen) {
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decoder->cbr_seen = decoder->cbr;
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decoder->state.type = INTEL_PT_CBR_CHG;
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decoder->state.from_ip = decoder->ip;
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decoder->state.to_ip = 0;
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decoder->state.cbr_payload =
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decoder->packet.payload;
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return 0;
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}
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break;
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case INTEL_PT_MODE_EXEC:
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@ -2343,6 +2357,11 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder)
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decoder->sample_insn_cnt = decoder->timestamp_insn_cnt;
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} else {
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decoder->state.err = 0;
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if (decoder->cbr != decoder->cbr_seen && decoder->state.type) {
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decoder->cbr_seen = decoder->cbr;
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decoder->state.type |= INTEL_PT_CBR_CHG;
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decoder->state.cbr_payload = decoder->cbr_payload;
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}
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if (intel_pt_sample_time(decoder->pkt_state)) {
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decoder->sample_timestamp = decoder->timestamp;
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decoder->sample_insn_cnt = decoder->timestamp_insn_cnt;
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@ -36,6 +36,7 @@ enum intel_pt_sample_type {
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INTEL_PT_PWR_ENTRY = 1 << 5,
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INTEL_PT_EX_STOP = 1 << 6,
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INTEL_PT_PWR_EXIT = 1 << 7,
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INTEL_PT_CBR_CHG = 1 << 8,
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};
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enum intel_pt_period_type {
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@ -73,6 +74,7 @@ struct intel_pt_state {
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uint64_t mwait_payload;
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uint64_t pwre_payload;
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uint64_t pwrx_payload;
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uint64_t cbr_payload;
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uint32_t flags;
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enum intel_pt_insn_op insn_op;
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int insn_len;
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