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Diffstat (limited to 'tools/perf/util/intel-pt-decoder/intel-pt-decoder.c')
-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-decoder.c61
1 files changed, 46 insertions, 15 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 f9157aed1289..4503f3ca45ab 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -113,6 +113,7 @@ struct intel_pt_decoder {
bool have_cyc;
bool fixup_last_mtc;
bool have_last_ip;
+ enum intel_pt_param_flags flags;
uint64_t pos;
uint64_t last_ip;
uint64_t ip;
@@ -226,6 +227,8 @@ struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params)
decoder->return_compression = params->return_compression;
decoder->branch_enable = params->branch_enable;
+ decoder->flags = params->flags;
+
decoder->period = params->period;
decoder->period_type = params->period_type;
@@ -1097,6 +1100,15 @@ static bool intel_pt_fup_event(struct intel_pt_decoder *decoder)
return ret;
}
+static inline bool intel_pt_fup_with_nlip(struct intel_pt_decoder *decoder,
+ struct intel_pt_insn *intel_pt_insn,
+ uint64_t ip, int err)
+{
+ return decoder->flags & INTEL_PT_FUP_WITH_NLIP && !err &&
+ intel_pt_insn->branch == INTEL_PT_BR_INDIRECT &&
+ ip == decoder->ip + intel_pt_insn->length;
+}
+
static int intel_pt_walk_fup(struct intel_pt_decoder *decoder)
{
struct intel_pt_insn intel_pt_insn;
@@ -1109,10 +1121,11 @@ static int intel_pt_walk_fup(struct intel_pt_decoder *decoder)
err = intel_pt_walk_insn(decoder, &intel_pt_insn, ip);
if (err == INTEL_PT_RETURN)
return 0;
- if (err == -EAGAIN) {
+ if (err == -EAGAIN ||
+ intel_pt_fup_with_nlip(decoder, &intel_pt_insn, ip, err)) {
if (intel_pt_fup_event(decoder))
return 0;
- return err;
+ return -EAGAIN;
}
decoder->set_fup_tx_flags = false;
if (err)
@@ -1152,7 +1165,7 @@ static int intel_pt_walk_tip(struct intel_pt_decoder *decoder)
decoder->pge = false;
decoder->continuous_period = false;
decoder->pkt_state = INTEL_PT_STATE_IN_SYNC;
- decoder->state.to_ip = 0;
+ decoder->state.type |= INTEL_PT_TRACE_END;
return 0;
}
if (err == INTEL_PT_RETURN)
@@ -1166,9 +1179,13 @@ static int intel_pt_walk_tip(struct intel_pt_decoder *decoder)
decoder->continuous_period = false;
decoder->pkt_state = INTEL_PT_STATE_IN_SYNC;
decoder->state.from_ip = decoder->ip;
- decoder->state.to_ip = 0;
- if (decoder->packet.count != 0)
+ if (decoder->packet.count == 0) {
+ decoder->state.to_ip = 0;
+ } else {
+ decoder->state.to_ip = decoder->last_ip;
decoder->ip = decoder->last_ip;
+ }
+ decoder->state.type |= INTEL_PT_TRACE_END;
} else {
decoder->pkt_state = INTEL_PT_STATE_IN_SYNC;
decoder->state.from_ip = decoder->ip;
@@ -1195,7 +1212,8 @@ static int intel_pt_walk_tip(struct intel_pt_decoder *decoder)
decoder->pkt_state = INTEL_PT_STATE_IN_SYNC;
decoder->ip = to_ip;
decoder->state.from_ip = decoder->ip;
- decoder->state.to_ip = 0;
+ decoder->state.to_ip = to_ip;
+ decoder->state.type |= INTEL_PT_TRACE_END;
return 0;
}
intel_pt_log_at("ERROR: Conditional branch when expecting indirect branch",
@@ -1376,7 +1394,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder)
{
intel_pt_log("ERROR: Buffer overflow\n");
intel_pt_clear_tx_flags(decoder);
- decoder->have_tma = false;
decoder->cbr = 0;
decoder->timestamp_insn_cnt = 0;
decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC;
@@ -1457,6 +1474,8 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder)
decoder->have_calc_cyc_to_tsc = false;
intel_pt_calc_cyc_to_tsc(decoder, true);
}
+
+ intel_pt_log_to("Setting timestamp", decoder->timestamp);
}
static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder)
@@ -1497,6 +1516,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder)
decoder->timestamp = timestamp;
decoder->timestamp_insn_cnt = 0;
+
+ intel_pt_log_to("Setting timestamp", decoder->timestamp);
}
/* Walk PSB+ packets when already in sync. */
@@ -1604,7 +1625,6 @@ static int intel_pt_walk_fup_tip(struct intel_pt_decoder *decoder)
case INTEL_PT_PSB:
case INTEL_PT_TSC:
case INTEL_PT_TMA:
- case INTEL_PT_CBR:
case INTEL_PT_MODE_TSX:
case INTEL_PT_BAD:
case INTEL_PT_PSBEND:
@@ -1620,19 +1640,24 @@ static int intel_pt_walk_fup_tip(struct intel_pt_decoder *decoder)
decoder->pkt_step = 0;
return -ENOENT;
+ case INTEL_PT_CBR:
+ intel_pt_calc_cbr(decoder);
+ break;
+
case INTEL_PT_OVF:
return intel_pt_overflow(decoder);
case INTEL_PT_TIP_PGD:
decoder->state.from_ip = decoder->ip;
- decoder->state.to_ip = 0;
- if (decoder->packet.count != 0) {
+ if (decoder->packet.count == 0) {
+ decoder->state.to_ip = 0;
+ } else {
intel_pt_set_ip(decoder);
- intel_pt_log("Omitting PGD ip " x64_fmt "\n",
- decoder->ip);
+ decoder->state.to_ip = decoder->ip;
}
decoder->pge = false;
decoder->continuous_period = false;
+ decoder->state.type |= INTEL_PT_TRACE_END;
return 0;
case INTEL_PT_TIP_PGE:
@@ -1646,6 +1671,7 @@ static int intel_pt_walk_fup_tip(struct intel_pt_decoder *decoder)
intel_pt_set_ip(decoder);
decoder->state.to_ip = decoder->ip;
}
+ decoder->state.type |= INTEL_PT_TRACE_BEGIN;
return 0;
case INTEL_PT_TIP:
@@ -1724,6 +1750,7 @@ next:
intel_pt_set_ip(decoder);
decoder->state.from_ip = 0;
decoder->state.to_ip = decoder->ip;
+ decoder->state.type |= INTEL_PT_TRACE_BEGIN;
return 0;
}
@@ -2062,9 +2089,13 @@ static int intel_pt_walk_to_ip(struct intel_pt_decoder *decoder)
decoder->pge = decoder->packet.type != INTEL_PT_TIP_PGD;
if (intel_pt_have_ip(decoder))
intel_pt_set_ip(decoder);
- if (decoder->ip)
- return 0;
- break;
+ if (!decoder->ip)
+ break;
+ if (decoder->packet.type == INTEL_PT_TIP_PGE)
+ decoder->state.type |= INTEL_PT_TRACE_BEGIN;
+ if (decoder->packet.type == INTEL_PT_TIP_PGD)
+ decoder->state.type |= INTEL_PT_TRACE_END;
+ return 0;
case INTEL_PT_FUP:
if (intel_pt_have_ip(decoder))
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