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 <[email protected]> --- lib/igt_aux.c | 22 ++++++++++++++++++---- 1 file 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) -- 2.15.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
