Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH 3/6] perf lock: Sort map info based on class name | Date | Wed, 26 Jan 2022 16:00:47 -0800 |
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Instead of the random order, sort it by lock class name.
Before: # perf lock info -m Address of instance: name of class 0xffffa0d940ac5310: &dentry->d_lockref.lock 0xffffa0c20b0e1cb0: &dentry->d_lockref.lock 0xffffa0d8e051cc48: &base->lock 0xffffa0d94f992110: &anon_vma->rwsem 0xffffa0d947a4f278: (null) 0xffffa0c208f6e108: &map->lock 0xffffa0c213ad32c8: &cfs_rq->removed.lock 0xffffa0c20d695888: &parent->list_lock 0xffffa0c278775278: (null) 0xffffa0c212ad4690: &dentry->d_lockref.lock
After: # perf lock info -m Address of instance: name of class 0xffffa0c20d538800: &(&sig->stats_lock)->lock 0xffffa0c216d4ec40: &(&sig->stats_lock)->lock 0xffffa1fe4cb04610: &(__futex_data.queues)[i].lock 0xffffa1fe4cb07750: &(__futex_data.queues)[i].lock 0xffffa1fe4cb07b50: &(__futex_data.queues)[i].lock 0xffffa1fe4cb0b850: &(__futex_data.queues)[i].lock 0xffffa1fe4cb0bcd0: &(__futex_data.queues)[i].lock 0xffffa1fe4cb0e5d0: &(__futex_data.queues)[i].lock 0xffffa1fe4cb11ad0: &(__futex_data.queues)[i].lock
Acked-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/builtin-lock.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index c4b5c3d71ae3..8078f7ca826d 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -757,6 +757,21 @@ static void dump_threads(void) } } +static int compare_maps(struct lock_stat *a, struct lock_stat *b) +{ + int ret; + + if (a->name && b->name) + ret = strcmp(a->name, b->name); + else + ret = !!a->name - !!b->name; + + if (!ret) + return a->addr < b->addr; + else + return ret < 0; +} + static void dump_map(void) { unsigned int i; @@ -765,9 +780,12 @@ static void dump_map(void) pr_info("Address of instance: name of class\n"); for (i = 0; i < LOCKHASH_SIZE; i++) { hlist_for_each_entry(st, &lockhash_table[i], hash_entry) { - pr_info(" %#llx: %s\n", (unsigned long long)st->addr, st->name); + insert_to_result(st, compare_maps); } } + + while ((st = pop_from_result())) + pr_info(" %#llx: %s\n", (unsigned long long)st->addr, st->name); } static int dump_info(void) -- 2.35.0.rc0.227.g00780c9af4-goog
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