From: Miaoqian Lin <linmq006@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: linmq006@gmail.com, Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Song Liu <song@kernel.org>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] perf tools: Fix NULL vs IS_ERR_OR_NULL() checking
Date: Sat, 11 Dec 2021 05:38:53 +0000 [thread overview]
Message-ID: <20211211053856.19827-1-linmq006@gmail.com> (raw)
The function trace_event__tp_format_id may return ERR_PTR(-ENOMEM).
Use IS_ERR_OR_NULL to check tp_format.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
tools/perf/util/python.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 563a9ba8954f..7f782a31bda3 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -461,7 +461,7 @@ get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
struct tep_event *tp_format;
tp_format = trace_event__tp_format_id(evsel->core.attr.config);
- if (!tp_format)
+ if (IS_ERR_OR_NULL(tp_format))
return NULL;
evsel->tp_format = tp_format;
--
2.17.1
next reply other threads:[~2021-12-11 5:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-11 5:38 Miaoqian Lin [this message]
2021-12-11 11:25 ` [PATCH] perf tools: Fix NULL vs IS_ERR_OR_NULL() checking Arnaldo Carvalho de Melo
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