linux-kernel - [PATCH 14/22] perf bpf: Use ERR_CAST instead of ERR_PTR(PTR

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Message-Id: <20181130182652.23620-15-acme@kernel.org>
Date:   Fri, 30 Nov 2018 15:26:44 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Clark Williams <williams@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, Wen Yang <wen.yang99@....com.cn>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Julia Lawall <julia.lawall@...6.fr>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Wen Yang <yellowriver2010@...mail.com>,
        zhong.weidong@....com.cn,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 14/22] perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

From: Wen Yang <wen.yang99@....com.cn>

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

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

Signed-off-by: Wen Yang <wen.yang99@....com.cn>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Julia Lawall <julia.lawall@...6.fr>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wen Yang <yellowriver2010@...mail.com>
Cc: zhong.weidong@....com.cn
Link: http://lkml.kernel.org/r/20181127090610.28488-1-wen.yang99@zte.com.cn
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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;
 		}
-- 
2.19.1