diff options
| author | Namhyung Kim <[email protected]> | 2021-05-27 15:00:52 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2021-05-27 21:51:21 -0300 |
| commit | c673b7f59e940061467200f1746820a178444bd0 (patch) | |
| tree | e1bf0ddbed1a7da7f797c8e7eaef1c34caeae195 | |
| parent | c59870e2110e1229a6e4b2457aece6ffe8d68d99 (diff) | |
perf stat: Fix error check for bpf_program__attach
It seems the bpf_program__attach() returns a negative error code instead
of a NULL pointer in case of error.
Fixes: 7fac83aaf2ee ("perf stat: Introduce 'bperf' to share hardware PMCs with BPF")
Signed-off-by: Namhyung Kim <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/bpf_counter.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c index ddb52f748c8e..974f10e356f0 100644 --- a/tools/perf/util/bpf_counter.c +++ b/tools/perf/util/bpf_counter.c @@ -451,10 +451,10 @@ static int bperf_reload_leader_program(struct evsel *evsel, int attr_map_fd, goto out; } - err = -1; link = bpf_program__attach(skel->progs.on_switch); - if (!link) { + if (IS_ERR(link)) { pr_err("Failed to attach leader program\n"); + err = PTR_ERR(link); goto out; } |