Commit 9b574cfa authored by Laurent Dufour's avatar Laurent Dufour Committed by Michael Ellerman
Browse files

powerpc/pseries: reset the RCU watchdogs after a LPM 



The RCU watchdog timer should be reset when restarting the CPU after a
Live Partition Mobility operation.

Signed-off-by: default avatarLaurent Dufour <ldufour@linux.ibm.com>
Acked-by: default avatarNicholas Piggin <npiggin@gmail.com>
[mpe: Combine comments into a single comment block]
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221125173204.15329-1-ldufour@linux.ibm.com
parent 340a4a9f

arch/powerpc/platforms/pseries/mobility.c

+5 −2
Original line number Diff line number Diff line
@@ -635,10 +635,13 @@ static int do_join(void *arg) 
		prod_others();

	}

	/*

	 * Execution may have been suspended for several seconds, so

	 * reset the watchdog.

	 * Execution may have been suspended for several seconds, so reset

	 * the watchdogs. touch_nmi_watchdog() also touches the soft lockup

	 * watchdog.

	 */

	rcu_cpu_stall_reset();

	touch_nmi_watchdog();



	return ret;

}