diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2019-07-21 13:24:48 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-07-29 18:34:46 -0300 |
| commit | b8eca4d761c57fcf691a8063cd562f205645d11f (patch) | |
| tree | ec0bd61237fe3b65ae5ace40acfd45da15934a26 /tools/perf/lib/evsel.c | |
| parent | c03538b1f1a7e0e996a8d6feb20cf001d4b14939 (diff) | |
| download | linux-b8eca4d761c57fcf691a8063cd562f205645d11f.tar.bz2 | |
libperf: Adopt perf_evsel__alloc_fd() function from tools/perf
Move the perf_evsel__alloc_fd() function from perf to libperf.
It's not exported.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-62-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/lib/evsel.c')
| -rw-r--r-- | tools/perf/lib/evsel.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c index ddc3ad447bfb..027f1edb4e8e 100644 --- a/tools/perf/lib/evsel.c +++ b/tools/perf/lib/evsel.c @@ -1,9 +1,12 @@ // SPDX-License-Identifier: GPL-2.0 +#include <errno.h> #include <perf/evsel.h> #include <linux/list.h> #include <internal/evsel.h> #include <linux/zalloc.h> #include <stdlib.h> +#include <internal/xyarray.h> +#include <linux/string.h> void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr) { @@ -25,3 +28,21 @@ void perf_evsel__delete(struct perf_evsel *evsel) { free(evsel); } + +#define FD(e, x, y) (*(int *) xyarray__entry(e->fd, x, y)) + +int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) +{ + evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); + + if (evsel->fd) { + int cpu, thread; + for (cpu = 0; cpu < ncpus; cpu++) { + for (thread = 0; thread < nthreads; thread++) { + FD(evsel, cpu, thread) = -1; + } + } + } + + return evsel->fd != NULL ? 0 : -ENOMEM; +} |