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perf unwind: Use find_map function in access_dso_mem

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The find_map helper is already there, so let's use it.

Also we're going to introduce wider search in following patch, so it'll
be easier to make this change on single place.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Noel Grandin <noelgrandin@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1452158050-28061-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-01-07 10:14:00 +01:00 committed by Arnaldo Carvalho de Melo
parent d2190a8091
commit f22ed827a8
1 changed files with 5 additions and 6 deletions
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11
tools/perf/util/unwind-libunwind.c
View file

@ -416,20 +416,19 @@ get_proc_name(unw_addr_space_t __maybe_unused as,
static int access_dso_mem(struct unwind_info *ui, unw_word_t addr,
unw_word_t *data)
{
struct addr_location al;
struct map *map;
ssize_t size;
thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
MAP__FUNCTION, addr, &al);
if (!al.map) {
map = find_map(addr, ui);
if (!map) {
pr_debug("unwind: no map for %lx\n", (unsigned long)addr);
return -1;
}
if (!al.map->dso)
if (!map->dso)
return -1;
size = dso__data_read_addr(al.map->dso, al.map, ui->machine,
size = dso__data_read_addr(map->dso, map, ui->machine,
addr, (u8 *) data, sizeof(*data));
return !(size == sizeof(*data));