[PATCH v2 4/6] perf arm-spe: Fill address info for samples

From: James Clark
Date: Thu Feb 11 2021 - 08:54:51 EST


From: Leo Yan <leo.yan@xxxxxxxxxx>

To properly handle memory and branch samples, this patch divides into
two functions for generating samples: arm_spe__synth_mem_sample() is for
synthesizing memory and TLB samples; arm_spe__synth_branch_sample() is
to synthesize branch samples.

Arm SPE backend decoder has passed virtual and physical address through
packets, the address info is stored into the synthesize samples in the
function arm_spe__synth_mem_sample().

Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Signed-off-by: James Clark <james.clark@xxxxxxx>
Reviewed-by: James Clark <james.clark@xxxxxxx>
Tested-by: James Clark <james.clark@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: John Garry <john.garry@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Cc: Al Grant <al.grant@xxxxxxx>
Cc: Andre Przywara <andre.przywara@xxxxxxx>
Cc: Wei Li <liwei391@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
tools/perf/util/arm-spe.c | 52 +++++++++++++++++++++++----------------
1 file changed, 31 insertions(+), 21 deletions(-)

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index b134516e890b..578725344603 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -235,7 +235,6 @@ static void arm_spe_prep_sample(struct arm_spe *spe,
sample->cpumode = arm_spe_cpumode(spe, sample->ip);
sample->pid = speq->pid;
sample->tid = speq->tid;
- sample->addr = record->to_ip;
sample->period = 1;
sample->cpu = speq->cpu;

@@ -259,18 +258,37 @@ arm_spe_deliver_synth_event(struct arm_spe *spe,
return ret;
}

-static int
-arm_spe_synth_spe_events_sample(struct arm_spe_queue *speq,
- u64 spe_events_id)
+static int arm_spe__synth_mem_sample(struct arm_spe_queue *speq,
+ u64 spe_events_id)
{
struct arm_spe *spe = speq->spe;
+ struct arm_spe_record *record = &speq->decoder->record;
+ union perf_event *event = speq->event_buf;
+ struct perf_sample sample = { 0 };
+
+ arm_spe_prep_sample(spe, speq, event, &sample);
+
+ sample.id = spe_events_id;
+ sample.stream_id = spe_events_id;
+ sample.addr = record->virt_addr;
+ sample.phys_addr = record->phys_addr;
+
+ return arm_spe_deliver_synth_event(spe, speq, event, &sample);
+}
+
+static int arm_spe__synth_branch_sample(struct arm_spe_queue *speq,
+ u64 spe_events_id)
+{
+ struct arm_spe *spe = speq->spe;
+ struct arm_spe_record *record = &speq->decoder->record;
union perf_event *event = speq->event_buf;
- struct perf_sample sample = { .ip = 0, };
+ struct perf_sample sample = { 0 };

arm_spe_prep_sample(spe, speq, event, &sample);

sample.id = spe_events_id;
sample.stream_id = spe_events_id;
+ sample.addr = record->to_ip;

return arm_spe_deliver_synth_event(spe, speq, event, &sample);
}
@@ -283,15 +301,13 @@ static int arm_spe_sample(struct arm_spe_queue *speq)

if (spe->sample_flc) {
if (record->type & ARM_SPE_L1D_MISS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->l1d_miss_id);
+ err = arm_spe__synth_mem_sample(speq, spe->l1d_miss_id);
if (err)
return err;
}

if (record->type & ARM_SPE_L1D_ACCESS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->l1d_access_id);
+ err = arm_spe__synth_mem_sample(speq, spe->l1d_access_id);
if (err)
return err;
}
@@ -299,15 +315,13 @@ static int arm_spe_sample(struct arm_spe_queue *speq)

if (spe->sample_llc) {
if (record->type & ARM_SPE_LLC_MISS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->llc_miss_id);
+ err = arm_spe__synth_mem_sample(speq, spe->llc_miss_id);
if (err)
return err;
}

if (record->type & ARM_SPE_LLC_ACCESS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->llc_access_id);
+ err = arm_spe__synth_mem_sample(speq, spe->llc_access_id);
if (err)
return err;
}
@@ -315,31 +329,27 @@ static int arm_spe_sample(struct arm_spe_queue *speq)

if (spe->sample_tlb) {
if (record->type & ARM_SPE_TLB_MISS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->tlb_miss_id);
+ err = arm_spe__synth_mem_sample(speq, spe->tlb_miss_id);
if (err)
return err;
}

if (record->type & ARM_SPE_TLB_ACCESS) {
- err = arm_spe_synth_spe_events_sample(
- speq, spe->tlb_access_id);
+ err = arm_spe__synth_mem_sample(speq, spe->tlb_access_id);
if (err)
return err;
}
}

if (spe->sample_branch && (record->type & ARM_SPE_BRANCH_MISS)) {
- err = arm_spe_synth_spe_events_sample(speq,
- spe->branch_miss_id);
+ err = arm_spe__synth_branch_sample(speq, spe->branch_miss_id);
if (err)
return err;
}

if (spe->sample_remote_access &&
(record->type & ARM_SPE_REMOTE_ACCESS)) {
- err = arm_spe_synth_spe_events_sample(speq,
- spe->remote_access_id);
+ err = arm_spe__synth_mem_sample(speq, spe->remote_access_id);
if (err)
return err;
}
--
2.28.0