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perf hist: Fix memory leak of a perf_hpp_fmt
[ Upstream commit 0ca1f534a7
]
perf_hpp__column_unregister() removes an entry from a list but doesn't
free the memory causing a memory leak spotted by leak sanitizer.
Add the free while at the same time reducing the scope of the function
to static.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.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: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211118071247.2140392-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
57247f7035
commit
b380d09e44
2 changed files with 14 additions and 15 deletions
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@ -472,6 +472,18 @@ struct perf_hpp_list perf_hpp_list = {
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#undef __HPP_SORT_ACC_FN
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#undef __HPP_SORT_RAW_FN
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static void fmt_free(struct perf_hpp_fmt *fmt)
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{
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/*
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* At this point fmt should be completely
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* unhooked, if not it's a bug.
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*/
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BUG_ON(!list_empty(&fmt->list));
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BUG_ON(!list_empty(&fmt->sort_list));
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if (fmt->free)
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fmt->free(fmt);
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}
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void perf_hpp__init(void)
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{
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@ -535,9 +547,10 @@ void perf_hpp_list__prepend_sort_field(struct perf_hpp_list *list,
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list_add(&format->sort_list, &list->sorts);
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}
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void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
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static void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
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{
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list_del_init(&format->list);
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fmt_free(format);
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}
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void perf_hpp__cancel_cumulate(void)
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@ -609,19 +622,6 @@ void perf_hpp__append_sort_keys(struct perf_hpp_list *list)
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}
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static void fmt_free(struct perf_hpp_fmt *fmt)
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{
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/*
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* At this point fmt should be completely
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* unhooked, if not it's a bug.
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*/
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BUG_ON(!list_empty(&fmt->list));
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BUG_ON(!list_empty(&fmt->sort_list));
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if (fmt->free)
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fmt->free(fmt);
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}
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void perf_hpp__reset_output_field(struct perf_hpp_list *list)
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{
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struct perf_hpp_fmt *fmt, *tmp;
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@ -361,7 +361,6 @@ enum {
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};
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void perf_hpp__init(void);
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void perf_hpp__column_unregister(struct perf_hpp_fmt *format);
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void perf_hpp__cancel_cumulate(void);
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void perf_hpp__setup_output_field(struct perf_hpp_list *list);
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void perf_hpp__reset_output_field(struct perf_hpp_list *list);
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