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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] gt@kms_flip@vblank-vs-[dpms-suspend-interruptible|modeset-suspend-interruptible|suspend-interruptible] - Softdog incomplete"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103160#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] gt@kms_flip@vblank-vs-[dpms-suspend-interruptible|modeset-suspend-interruptible|suspend-interruptible] - Softdog incomplete"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103160">bug 103160</a>
from <span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
</span></b>
<pre>AFAICS, in the tests the 500Hz interrupt frequency is too high for the main
thread, so syscalls there will be interrupted and delayed indefinitely leading
to watchdog timeout. To test this theory we should try something like:
diff --git a/lib/igt_aux.c b/lib/igt_aux.c
index fa6594c3..2f01c723 100644
--- a/lib/igt_aux.c
+++ b/lib/igt_aux.c
@@ -278,7 +278,7 @@ static void __attribute__((noreturn))
signal_helper_process(pid_t pid)
{
/* Interrupt the parent process at 500Hz, just to be annoying */
while (1) {
- usleep(1000 * 1000 / 500);
+ usleep(1000 * 1000 / 50);
if (kill(pid, SIGCONT)) /* Parent has died, so must we. */
exit(0);
}</pre>
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