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perf tools: Add refcnt into struct mem_info

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It's passed along several hists entries in --hierarchy mode, so it's
better we keep track of it.

The current fail I see is that it gets removed in hierarchy --mem-mode
mode, where it's shared in the different hierarchies, but removed from
the template hist entry, so the report crashes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180307155020.32613-6-jolsa@kernel.org
[ Rename mem_info__aloc() to mem_info__new(), to fix the typo and use the convention for constructors ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2018-03-07 16:50:06 +01:00
committed by Arnaldo Carvalho de Melo
parent 915b4e27f1
commit 9f87498f1c
4 changed files with 41 additions and 6 deletions
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22
tools/perf/util/symbol.c
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@@ -2221,3 +2221,25 @@ int symbol__config_symfs(const struct option *opt __maybe_unused,
free(bf);
return 0;
}
struct mem_info *mem_info__get(struct mem_info *mi)
{
if (mi)
refcount_inc(&mi->refcnt);
return mi;
}
void mem_info__put(struct mem_info *mi)
{
if (mi && refcount_dec_and_test(&mi->refcnt))
free(mi);
}
struct mem_info *mem_info__new(void)
{
struct mem_info *mi = zalloc(sizeof(*mi));
if (mi)
refcount_set(&mi->refcnt, 1);
return mi;
}