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perf tools: Remove special handling of system-wide evsel 

For system-wide evsels, the thread map should be dummy - i.e. it has a
single entry of -1.  But the code guarantees such a thread map, so no
need to handle it specially.

No functional change intended.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2022-10-03 13:46:47 -07:00 committed by Arnaldo Carvalho de Melo
parent 182bb594e0
commit 1337b9dcb0
4 changed files with 2 additions and 19 deletions
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3
tools/lib/perf/evsel.c
View File

@ -515,9 +515,6 @@ int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
if (ncpus == 0 || nthreads == 0)
return 0;
if (evsel->system_wide)
nthreads = 1;
evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
if (evsel->sample_id == NULL)
return -ENOMEM;

3
tools/perf/builtin-script.c
View File

@ -2243,9 +2243,6 @@ static void __process_stat(struct evsel *counter, u64 tstamp)
struct perf_cpu cpu;
static int header_printed;
if (counter->core.system_wide)
nthreads = 1;
if (!header_printed) {
printf("%3s %8s %15s %15s %15s %15s %s\n",
"CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT");

12
tools/perf/util/evsel.c
View File

@ -1813,7 +1813,7 @@ static struct perf_thread_map *empty_thread_map;
static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus,
struct perf_thread_map *threads)
{
int nthreads;
int nthreads = perf_thread_map__nr(threads);
if ((perf_missing_features.write_backward && evsel->core.attr.write_backward) ||
(perf_missing_features.aux_output && evsel->core.attr.aux_output))
@ -1839,11 +1839,6 @@ static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus,
threads = empty_thread_map;
}
if (evsel->core.system_wide)
nthreads = 1;
else
nthreads = threads->nr;
if (evsel->core.fd == NULL &&
perf_evsel__alloc_fd(&evsel->core, perf_cpu_map__nr(cpus), nthreads) < 0)
return -ENOMEM;
@ -2061,10 +2056,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
if (threads == NULL)
threads = empty_thread_map;
if (evsel->core.system_wide)
nthreads = 1;
else
nthreads = threads->nr;
nthreads = perf_thread_map__nr(threads);
if (evsel->cgrp)
pid = evsel->cgrp->fd;

3
tools/perf/util/stat.c
View File

@ -420,9 +420,6 @@ static int process_counter_maps(struct perf_stat_config *config,
int ncpus = evsel__nr_cpus(counter);
int idx, thread;
if (counter->core.system_wide)
nthreads = 1;
for (thread = 0; thread < nthreads; thread++) {
for (idx = 0; idx < ncpus; idx++) {
if (process_counter_values(config, counter, idx, thread,