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libperf: Adopt perf_evsel__alloc_fd() function from tools/perf

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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>
This commit is contained in:
Jiri Olsa
2019-07-21 13:24:48 +02:00
committed by Arnaldo Carvalho de Melo
parent c03538b1f1
commit b8eca4d761
3 changed files with 24 additions and 17 deletions
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18
tools/perf/util/evsel.c
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@@ -1153,22 +1153,6 @@ void perf_evsel__config(struct evsel *evsel, struct record_opts *opts,
perf_evsel__reset_sample_bit(evsel, BRANCH_STACK);
}
static int perf_evsel__alloc_fd(struct evsel *evsel, int ncpus, int nthreads)
{
evsel->core.fd = xyarray__new(ncpus, nthreads, sizeof(int));
if (evsel->core.fd) {
int cpu, thread;
for (cpu = 0; cpu < ncpus; cpu++) {
for (thread = 0; thread < nthreads; thread++) {
FD(evsel, cpu, thread) = -1;
}
}
}
return evsel->core.fd != NULL ? 0 : -ENOMEM;
}
static int perf_evsel__run_ioctl(struct evsel *evsel,
int ioc, void *arg)
{
@@ -1866,7 +1850,7 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
nthreads = threads->nr;
if (evsel->core.fd == NULL &&
perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0)
perf_evsel__alloc_fd(&evsel->core, cpus->nr, nthreads) < 0)
return -ENOMEM;
if (evsel->cgrp) {