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@xxxxxxxxxxxxxxxxxx>
---
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
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