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perf bpf-loader: use PTR_ERR_OR_ZERO inetead of return code 

Use PTR_ERR_OR_ZERO() in bpf__setup_stdout() return code instead of open
coded equivalent.

Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1536284082-23466-2-git-send-email-dingxiang@cmss.chinamobile.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ding Xiang 2018-09-07 09:34:42 +08:00 committed by Arnaldo Carvalho de Melo
parent 01ab2e9110
commit e381d1c21e
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/bpf-loader.c
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@ -1615,7 +1615,7 @@ struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const cha
int bpf__setup_stdout(struct perf_evlist *evlist)
{
struct perf_evsel *evsel = bpf__setup_output_event(evlist, "__bpf_stdout__");
return IS_ERR(evsel) ? PTR_ERR(evsel) : 0;
return PTR_ERR_OR_ZERO(evsel);
}
#define ERRNO_OFFSET(e) ((e) - __BPF_LOADER_ERRNO__START)