[tip:perf/core] perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

From: tip-bot for Wen Yang
Date: Tue Dec 18 2018 - 08:54:01 EST

Commit-ID: 19702894cd93d79c5b5a63f56f6f417595b1a57c
Gitweb: https://git.kernel.org/tip/19702894cd93d79c5b5a63f56f6f417595b1a57c
Author: Wen Yang <wen.yang99@xxxxxxxxxx>
AuthorDate: Tue, 27 Nov 2018 17:06:10 +0800
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 17 Dec 2018 14:54:36 -0300

perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)). This
makes it more readable and also fix this warning detected by

tools/perf/util/bpf-loader.c:1606:11-18: WARNING: ERR_CAST can be used with op

Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Julia Lawall <julia.lawall@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Wen Yang <yellowriver2010@xxxxxxxxxxx>
Cc: zhong.weidong@xxxxxxxxxx
Link: http://lkml.kernel.org/r/20181127090610.28488-1-wen.yang99@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/util/bpf-loader.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index f9ae1a993806..9a280647d829 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -1603,7 +1603,7 @@ struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const cha

op = bpf_map__add_newop(map, NULL);
if (IS_ERR(op))
- return ERR_PTR(PTR_ERR(op));
+ return ERR_CAST(op);
op->op_type = BPF_MAP_OP_SET_EVSEL;
op->v.evsel = evsel;