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Code Issues Releases Wiki Activity

perf lock contention: Factor out get_symbol_name_offset()

Browse source 
It's to convert addr to symbol+offset.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20220912055314.744552-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2022-09-11 22:53:11 -07:00 committed by Arnaldo Carvalho de Melo
parent f0c4b97a29
commit 637522ce97
1 changed files with 19 additions and 9 deletions
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28
tools/perf/builtin-lock.c
View file

@ -899,6 +899,23 @@ bool is_lock_function(struct machine *machine, u64 addr)
return false;
}
static int get_symbol_name_offset(struct map *map, struct symbol *sym, u64 ip,
char *buf, int size)
{
u64 offset;
if (map == NULL || sym == NULL) {
buf[0] = '\0';
return 0;
}
offset = map->map_ip(map, ip) - sym->start;
if (offset)
return scnprintf(buf, size, "%s+%#lx", sym->name, offset);
else
return strlcpy(buf, sym->name, size);
}
static int lock_contention_caller(struct evsel *evsel, struct perf_sample *sample,
char *buf, int size)
{
@ -941,15 +958,8 @@ static int lock_contention_caller(struct evsel *evsel, struct perf_sample *sampl
sym = node->ms.sym;
if (sym && !is_lock_function(machine, node->ip)) {
struct map *map = node->ms.map;
u64 offset;
offset = map->map_ip(map, node->ip) - sym->start;
if (offset)
scnprintf(buf, size, "%s+%#lx", sym->name, offset);
else
strlcpy(buf, sym->name, size);
get_symbol_name_offset(node->ms.map, sym, node->ip,
buf, size);
return 0;
}