On Thu, Jan 28, 2021 at 05:39:27PM +0800, Joseph Jang wrote:

Since dpm_watchdog just cover two functions __device_suspend() and
device_resume(), we proposed to move it to core power suspend.c to extend
its coverage and monitor more devices suspend hand issues.

We propose to use new name suspend watchdog and new timeout handler to
cover more sleep hang issues. The new timeout handler will dump disk
sleep task call trace at first round timeout and trigger kernel panic
at second round timeout.
The default timer for each round is defined in
CONFIG_PM_SUSPEND_WATCHDOG_TIMEOUT.

Signed-off-by: Joseph Jang <redacted>

Seems sane, but I'm not the maintainer of this stuff:

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>