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perf evsel: Add functions to close evsel on a CPU

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Refactor the existing all CPU function to use the per CPU close
internally.

Export APIs to close per CPU.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lore.kernel.org/lkml/20191121001522.180827-7-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2019-11-20 16:15:16 -08:00 committed by Arnaldo Carvalho de Melo
parent a8cbe40fe9
commit 99d6141d67
2 changed files with 22 additions and 6 deletions
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27
tools/perf/lib/evsel.c
View File

@ -114,16 +114,23 @@ int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *cpus,
return err;
}
static void perf_evsel__close_fd_cpu(struct perf_evsel *evsel, int cpu)
{
int thread;
for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) {
if (FD(evsel, cpu, thread) >= 0)
close(FD(evsel, cpu, thread));
FD(evsel, cpu, thread) = -1;
}
}
void perf_evsel__close_fd(struct perf_evsel *evsel)
{
int cpu, thread;
int cpu;
for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++)
for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) {
if (FD(evsel, cpu, thread) >= 0)
close(FD(evsel, cpu, thread));
FD(evsel, cpu, thread) = -1;
}
perf_evsel__close_fd_cpu(evsel, cpu);
}
void perf_evsel__free_fd(struct perf_evsel *evsel)
@ -141,6 +148,14 @@ void perf_evsel__close(struct perf_evsel *evsel)
perf_evsel__free_fd(evsel);
}
void perf_evsel__close_cpu(struct perf_evsel *evsel, int cpu)
{
if (evsel->fd == NULL)
return;
perf_evsel__close_fd_cpu(evsel, cpu);
}
int perf_evsel__read_size(struct perf_evsel *evsel)
{
u64 read_format = evsel->attr.read_format;

1
tools/perf/lib/include/perf/evsel.h
View File

@ -26,6 +26,7 @@ LIBPERF_API void perf_evsel__delete(struct perf_evsel *evsel);
LIBPERF_API int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
LIBPERF_API void perf_evsel__close(struct perf_evsel *evsel);
LIBPERF_API void perf_evsel__close_cpu(struct perf_evsel *evsel, int cpu);
LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
struct perf_counts_values *count);
LIBPERF_API int perf_evsel__enable(struct perf_evsel *evsel);