diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2014-12-30 08:38:13 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-01-08 17:56:35 +0300 |
| commit | d114960c488b5a95705a04bba305f931cef0efd6 (patch) | |
| tree | f77f5ed8815a9fd1ce543b837be35c70d8af9c8c | |
| parent | 5ca8271022da8583f0d618aeda5b2bae785e7882 (diff) | |
| download | linux-d114960c488b5a95705a04bba305f931cef0efd6.tar.xz | |
perf callchain: Free callchains when hist entries are deleted
Markus reported that "perf top -g" can leak ~300MB per second on his
machine. This is partly because it missed to free callchains when hist
entries are deleted. Fix it.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20141230053813.GD6081@sejong
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/callchain.c | 30 | ||||
| -rw-r--r-- | tools/perf/util/callchain.h | 2 | ||||
| -rw-r--r-- | tools/perf/util/hist.c | 1 |
3 files changed, 33 insertions, 0 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 64b377e591e4..14e7a123d43b 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -841,3 +841,33 @@ char *callchain_list__sym_name(struct callchain_list *cl, return bf; } + +static void free_callchain_node(struct callchain_node *node) +{ + struct callchain_list *list, *tmp; + struct callchain_node *child; + struct rb_node *n; + + list_for_each_entry_safe(list, tmp, &node->val, list) { + list_del(&list->list); + free(list); + } + + n = rb_first(&node->rb_root_in); + while (n) { + child = container_of(n, struct callchain_node, rb_node_in); + n = rb_next(n); + rb_erase(&child->rb_node_in, &node->rb_root_in); + + free_callchain_node(child); + free(child); + } +} + +void free_callchain(struct callchain_root *root) +{ + if (!symbol_conf.use_callchain) + return; + + free_callchain_node(&root->node); +} diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index dbc08cf5f970..c0ec1acc38e4 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -198,4 +198,6 @@ static inline int arch_skip_callchain_idx(struct thread *thread __maybe_unused, char *callchain_list__sym_name(struct callchain_list *cl, char *bf, size_t bfsize, bool show_dso); +void free_callchain(struct callchain_root *root); + #endif /* __PERF_CALLCHAIN_H */ diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 0ced178ce306..182395546ddc 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -947,6 +947,7 @@ void hist_entry__free(struct hist_entry *he) zfree(&he->mem_info); zfree(&he->stat_acc); free_srcline(he->srcline); + free_callchain(he->callchain); free(he); } |