UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

perf auxtrace: Automatically group aux-output events 

aux-output events need to have an AUX area event as the group leader.
However, grouping events does not allow the AUX area event to be given
an address filter because the --filter option must come after the event,
which conflicts with the grouping syntax.

To allow filtering in that case, automatically create a group since that
is the requirement anyway.

Example: (requires Intel Tremont)

  perf record -c 500 -e 'intel_pt//u' --filter 'filter main @ /bin/ls' -e 'cycles/aux-output/pp' ls

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20210121140418.14705-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2021-01-21 16:04:18 +02:00 committed by Arnaldo Carvalho de Melo
parent c5c97cadd7
commit d58b3f7e70
3 changed files with 23 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/builtin-record.c
View File

@ -731,6 +731,8 @@ static int record__auxtrace_init(struct record *rec)
if (err)
return err;
auxtrace_regroup_aux_output(rec->evlist);
return auxtrace_parse_filters(rec->evlist);
}

15
tools/perf/util/auxtrace.c
View File

@ -788,6 +788,21 @@ no_opt:
return auxtrace_validate_aux_sample_size(evlist, opts);
}
void auxtrace_regroup_aux_output(struct evlist *evlist)
{
struct evsel *evsel, *aux_evsel = NULL;
struct evsel_config_term *term;
evlist__for_each_entry(evlist, evsel) {
if (evsel__is_aux_event(evsel))
aux_evsel = evsel;
term = evsel__get_config_term(evsel, AUX_OUTPUT);
/* If possible, group with the AUX event */
if (term && aux_evsel)
evlist__regroup(evlist, aux_evsel, evsel);
}
}
struct auxtrace_record *__weak
auxtrace_record__init(struct evlist *evlist __maybe_unused, int *err)
{

6
tools/perf/util/auxtrace.h
View File

@ -559,6 +559,7 @@ int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,
int auxtrace_parse_sample_options(struct auxtrace_record *itr,
struct evlist *evlist,
struct record_opts *opts, const char *str);
void auxtrace_regroup_aux_output(struct evlist *evlist);
int auxtrace_record__options(struct auxtrace_record *itr,
struct evlist *evlist,
struct record_opts *opts);
@ -740,6 +741,11 @@ int auxtrace_parse_sample_options(struct auxtrace_record *itr __maybe_unused,
return -EINVAL;
}
static inline
void auxtrace_regroup_aux_output(struct evlist *evlist __maybe_unused)
{
}
static inline
int auxtrace__process_event(struct perf_session *session __maybe_unused,
union perf_event *event __maybe_unused,