diff options
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 30 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.h | 1 |
2 files changed, 31 insertions, 0 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 8ff6c6a61291..7591a0c37473 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -80,6 +80,7 @@ struct intel_pt_decoder { int (*walk_insn)(struct intel_pt_insn *intel_pt_insn, uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip, uint64_t max_insn_cnt, void *data); + bool (*pgd_ip)(uint64_t ip, void *data); void *data; struct intel_pt_state state; const unsigned char *buf; @@ -186,6 +187,7 @@ struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params) decoder->get_trace = params->get_trace; decoder->walk_insn = params->walk_insn; + decoder->pgd_ip = params->pgd_ip; decoder->data = params->data; decoder->return_compression = params->return_compression; @@ -1008,6 +1010,19 @@ static int intel_pt_walk_tip(struct intel_pt_decoder *decoder) int err; err = intel_pt_walk_insn(decoder, &intel_pt_insn, 0); + if (err == INTEL_PT_RETURN && + decoder->pgd_ip && + decoder->pkt_state == INTEL_PT_STATE_TIP_PGD && + (decoder->state.type & INTEL_PT_BRANCH) && + decoder->pgd_ip(decoder->state.to_ip, decoder->data)) { + /* Unconditional branch leaving filter region */ + decoder->no_progress = 0; + decoder->pge = false; + decoder->continuous_period = false; + decoder->pkt_state = INTEL_PT_STATE_IN_SYNC; + decoder->state.to_ip = 0; + return 0; + } if (err == INTEL_PT_RETURN) return 0; if (err) @@ -1036,6 +1051,21 @@ static int intel_pt_walk_tip(struct intel_pt_decoder *decoder) } if (intel_pt_insn.branch == INTEL_PT_BR_CONDITIONAL) { + uint64_t to_ip = decoder->ip + intel_pt_insn.length + + intel_pt_insn.rel; + + if (decoder->pgd_ip && + decoder->pkt_state == INTEL_PT_STATE_TIP_PGD && + decoder->pgd_ip(to_ip, decoder->data)) { + /* Conditional branch leaving filter region */ + decoder->pge = false; + decoder->continuous_period = false; + decoder->pkt_state = INTEL_PT_STATE_IN_SYNC; + decoder->ip = to_ip; + decoder->state.from_ip = decoder->ip; + decoder->state.to_ip = 0; + return 0; + } intel_pt_log_at("ERROR: Conditional branch when expecting indirect branch", decoder->ip); decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h index 02c38fec1c37..89399985fa4d 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h @@ -83,6 +83,7 @@ struct intel_pt_params { int (*walk_insn)(struct intel_pt_insn *intel_pt_insn, uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip, uint64_t max_insn_cnt, void *data); + bool (*pgd_ip)(uint64_t ip, void *data); void *data; bool return_compression; uint64_t period; |