diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-14 13:19:01 +0000 |
|---|---|---|
| committer | Arkadiusz Hiler <arkadiusz.hiler@intel.com> | 2017-11-16 16:27:54 +0200 |
| commit | 936b97165308e179880fc0f218192881953f2544 (patch) | |
| tree | c677b1ce7ba5b03269bb12c9d8dd5710db131ff2 /lib/igt_aux.c | |
| parent | 405ae11df35c883df446e7e2539d2df0c9c19a1e (diff) | |
lib: Dump /sys/kernel/debug/suspend_stats after suspend failure
I noticed that dpm was storing some information about which phase of
suspend failed inside suspend_stats. That will be useful to help debug
such failures, so automatically dump it after suspend fails.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Diffstat (limited to 'lib/igt_aux.c')
| -rw-r--r-- | lib/igt_aux.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/lib/igt_aux.c b/lib/igt_aux.c index ee53559c..0bcf792c 100644 --- a/lib/igt_aux.c +++ b/lib/igt_aux.c @@ -803,10 +803,24 @@ static void suspend_via_rtcwake(enum igt_suspend_state state) snprintf(cmd, sizeof(cmd), "rtcwake -s %d -m %s ", delay, suspend_state_name[state]); ret = igt_system(cmd); - igt_assert_f(ret == 0, - "rtcwake failed with %i\n" - "Check dmesg for further details.\n", - ret); + if (ret) { + const char *path = "suspend_stats"; + char *info; + int dir; + + igt_warn("rtcwake failed with %i\n" + "Check dmesg for further details.\n", + ret); + + dir = open(igt_debugfs_mount(), O_RDONLY); + info = igt_sysfs_get(dir, path); + close(dir); + if (info) { + igt_debug("%s:\n%s\n", path, info); + free(info); + } + } + igt_assert_eq(ret, 0); } static void suspend_via_sysfs(int power_dir, enum igt_suspend_state state) |