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Subject[PATCH 48/85] perf cs-etm: Move tid/pid to traceid_queue
Date
From: Mathieu Poirier <mathieu.poirier@linaro.org>

The tid/pid fields of structure cs_etm_queue are CPU dependent and as
such need to be part of the cs_etm_traceid_queue in order to support
CPU-wide trace scenarios.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190524173508.29044-13-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/cs-etm.c | 44 ++++++++++++++++++++++++----------------
1 file changed, 26 insertions(+), 18 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 0d51d6d9a594..7e3b4d10f5c4 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -62,6 +62,7 @@ struct cs_etm_auxtrace {

struct cs_etm_traceid_queue {
u8 trace_chan_id;
+ pid_t pid, tid;
u64 period_instructions;
size_t last_branch_pos;
union perf_event *event_buf;
@@ -78,7 +79,6 @@ struct cs_etm_queue {
struct cs_etm_decoder *decoder;
struct auxtrace_buffer *buffer;
unsigned int queue_nr;
- pid_t pid, tid;
u64 offset;
const unsigned char *buf;
size_t buf_len, buf_used;
@@ -159,10 +159,14 @@ static int cs_etm__init_traceid_queue(struct cs_etm_queue *etmq,
u8 trace_chan_id)
{
int rc = -ENOMEM;
+ struct auxtrace_queue *queue;
struct cs_etm_auxtrace *etm = etmq->etm;

cs_etm__clear_packet_queue(&tidq->packet_queue);

+ queue = &etmq->etm->queues.queue_array[etmq->queue_nr];
+ tidq->tid = queue->tid;
+ tidq->pid = -1;
tidq->trace_chan_id = trace_chan_id;

tidq->packet = zalloc(sizeof(struct cs_etm_packet));
@@ -598,8 +602,6 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
queue->priv = etmq;
etmq->etm = etm;
etmq->queue_nr = queue_nr;
- etmq->tid = queue->tid;
- etmq->pid = -1;
etmq->offset = 0;

out:
@@ -817,23 +819,19 @@ cs_etm__get_trace(struct cs_etm_queue *etmq)
}

static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm,
- struct auxtrace_queue *queue)
+ struct auxtrace_queue *queue,
+ struct cs_etm_traceid_queue *tidq)
{
- struct cs_etm_traceid_queue *tidq;
- struct cs_etm_queue *etmq = queue->priv;
-
- tidq = cs_etm__etmq_get_traceid_queue(etmq, CS_ETM_PER_THREAD_TRACEID);
-
/* CPU-wide tracing isn't supported yet */
if (queue->tid == -1)
return;

- if ((!tidq->thread) && (etmq->tid != -1))
+ if ((!tidq->thread) && (tidq->tid != -1))
tidq->thread = machine__find_thread(etm->machine, -1,
- etmq->tid);
+ tidq->tid);

if (tidq->thread)
- etmq->pid = tidq->thread->pid_;
+ tidq->pid = tidq->thread->pid_;
}

static int cs_etm__synth_instruction_sample(struct cs_etm_queue *etmq,
@@ -850,8 +848,8 @@ static int cs_etm__synth_instruction_sample(struct cs_etm_queue *etmq,
event->sample.header.size = sizeof(struct perf_event_header);

sample.ip = addr;
- sample.pid = etmq->pid;
- sample.tid = etmq->tid;
+ sample.pid = tidq->pid;
+ sample.tid = tidq->tid;
sample.id = etmq->etm->instructions_id;
sample.stream_id = etmq->etm->instructions_id;
sample.period = period;
@@ -909,8 +907,8 @@ static int cs_etm__synth_branch_sample(struct cs_etm_queue *etmq,
event->sample.header.size = sizeof(struct perf_event_header);

sample.ip = ip;
- sample.pid = etmq->pid;
- sample.tid = etmq->tid;
+ sample.pid = tidq->pid;
+ sample.tid = tidq->tid;
sample.addr = cs_etm__first_executed_instr(tidq->packet);
sample.id = etmq->etm->branches_id;
sample.stream_id = etmq->etm->branches_id;
@@ -1758,9 +1756,19 @@ static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm,
for (i = 0; i < queues->nr_queues; i++) {
struct auxtrace_queue *queue = &etm->queues.queue_array[i];
struct cs_etm_queue *etmq = queue->priv;
+ struct cs_etm_traceid_queue *tidq;
+
+ if (!etmq)
+ continue;
+
+ tidq = cs_etm__etmq_get_traceid_queue(etmq,
+ CS_ETM_PER_THREAD_TRACEID);
+
+ if (!tidq)
+ continue;

- if (etmq && ((tid == -1) || (etmq->tid == tid))) {
- cs_etm__set_pid_tid_cpu(etm, queue);
+ if ((tid == -1) || (tidq->tid == tid)) {
+ cs_etm__set_pid_tid_cpu(etm, queue, tidq);
cs_etm__run_decoder(etmq);
}
}
--
2.20.1
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