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perf/urgent fix:

Browse Source 
- Add missing initialization of perf_sample.cpumode in synthesized samples,
   affects jitdump, records for pre-existing threads and records synthesized
   from processor trace data, noticed while testing intel_pt events with
   'perf script' (Arnaldo Carvalho de Melo)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo-20160329' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fix from Arnaldo Carvalho de Melo:

 - Add missing initialization of perf_sample.cpumode in synthesized samples,
   affects jitdump, records for pre-existing threads and records synthesized
   from processor trace data, noticed while testing intel_pt events with
   'perf script' (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2016-03-30 12:31:03 +02:00
commit f6343be96e
4 changed files with 22 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
tools/perf/util/event.c
View File

@ -56,13 +56,22 @@ const char *perf_event__name(unsigned int id)
return perf_event__names[id];
}
static struct perf_sample synth_sample = {
static int perf_tool__process_synth_event(struct perf_tool *tool,
union perf_event *event,
struct machine *machine,
perf_event__handler_t process)
{
struct perf_sample synth_sample = {
.pid = -1,
.tid = -1,
.time = -1,
.stream_id = -1,
.cpu = -1,
.period = 1,
.cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
};
return process(tool, event, &synth_sample, machine);
};
/*
@ -186,7 +195,7 @@ pid_t perf_event__synthesize_comm(struct perf_tool *tool,
if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
return -1;
if (process(tool, event, &synth_sample, machine) != 0)
if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
return -1;
return tgid;
@ -218,7 +227,7 @@ static int perf_event__synthesize_fork(struct perf_tool *tool,
event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
if (process(tool, event, &synth_sample, machine) != 0)
if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
return -1;
return 0;
@ -344,7 +353,7 @@ out:
event->mmap2.pid = tgid;
event->mmap2.tid = pid;
if (process(tool, event, &synth_sample, machine) != 0) {
if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
rc = -1;
break;
}
@ -402,7 +411,7 @@ int perf_event__synthesize_modules(struct perf_tool *tool,
memcpy(event->mmap.filename, pos->dso->long_name,
pos->dso->long_name_len + 1);
if (process(tool, event, &synth_sample, machine) != 0) {
if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
rc = -1;
break;
}
@ -472,7 +481,7 @@ static int __event__synthesize_thread(union perf_event *comm_event,
/*
* Send the prepared comm event
*/
if (process(tool, comm_event, &synth_sample, machine) != 0)
if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
break;
rc = 0;
@ -701,7 +710,7 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
event->mmap.len = map->end - event->mmap.start;
event->mmap.pid = machine->pid;
err = process(tool, event, &synth_sample, machine);
err = perf_tool__process_synth_event(tool, event, machine, process);
free(event);
return err;

1
tools/perf/util/intel-bts.c
View File

@ -279,6 +279,7 @@ static int intel_bts_synth_branch_sample(struct intel_bts_queue *btsq,
event.sample.header.misc = PERF_RECORD_MISC_USER;
event.sample.header.size = sizeof(struct perf_event_header);
sample.cpumode = PERF_RECORD_MISC_USER;
sample.ip = le64_to_cpu(branch->from);
sample.pid = btsq->pid;
sample.tid = btsq->tid;

3
tools/perf/util/intel-pt.c
View File

@ -979,6 +979,7 @@ static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
if (!pt->timeless_decoding)
sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
sample.cpumode = PERF_RECORD_MISC_USER;
sample.ip = ptq->state->from_ip;
sample.pid = ptq->pid;
sample.tid = ptq->tid;
@ -1035,6 +1036,7 @@ static int intel_pt_synth_instruction_sample(struct intel_pt_queue *ptq)
if (!pt->timeless_decoding)
sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
sample.cpumode = PERF_RECORD_MISC_USER;
sample.ip = ptq->state->from_ip;
sample.pid = ptq->pid;
sample.tid = ptq->tid;
@ -1092,6 +1094,7 @@ static int intel_pt_synth_transaction_sample(struct intel_pt_queue *ptq)
if (!pt->timeless_decoding)
sample.time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
sample.cpumode = PERF_RECORD_MISC_USER;
sample.ip = ptq->state->from_ip;
sample.pid = ptq->pid;
sample.tid = ptq->tid;

2
tools/perf/util/jitdump.c
View File

@ -417,6 +417,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr)
* use first address as sample address
*/
memset(&sample, 0, sizeof(sample));
sample.cpumode = PERF_RECORD_MISC_USER;
sample.pid = pid;
sample.tid = tid;
sample.time = id->time;
@ -505,6 +506,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr)
* use first address as sample address
*/
memset(&sample, 0, sizeof(sample));
sample.cpumode = PERF_RECORD_MISC_USER;
sample.pid = pid;
sample.tid = tid;
sample.time = id->time;