[PATCH] xmon: Reset RCU and soft lockup watchdogs
From: Anton Blanchard <hidden>
Date: 2020-06-30 00:04:07
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
I'm seeing RCU warnings when exiting xmon. xmon resets the NMI watchdog, but does nothing with the RCU stall or soft lockup watchdogs. Add a helper function that handles all three. Signed-off-by: Anton Blanchard <redacted> --- arch/powerpc/xmon/xmon.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 7efe4bc3ccf6..d27944e38b04 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c@@ -481,6 +481,13 @@ static inline int unrecoverable_excp(struct pt_regs *regs) #endif } +static void xmon_touch_watchdogs(void) +{ + touch_softlockup_watchdog_sync(); + rcu_cpu_stall_reset(); + touch_nmi_watchdog(); +} + static int xmon_core(struct pt_regs *regs, int fromipi) { int cmd = 0;
@@ -718,7 +725,7 @@ static int xmon_core(struct pt_regs *regs, int fromipi) else insert_cpu_bpts(); - touch_nmi_watchdog(); + xmon_touch_watchdogs(); local_irq_restore(flags); return cmd != 'X' && cmd != EOF;
--
2.26.2