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perf python: Fix NULL vs IS_ERR_OR_NULL() checking

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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>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Link: http://lore.kernel.org/lkml/20211211053856.19827-1-linmq006@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Miaoqian Lin 2021-12-11 05:38:53 +00:00 committed by Arnaldo Carvalho de Melo
parent 6665b8e483
commit 9937e8daab
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/python.c
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@ -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;