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powerpc/xmon: Reset RCU and soft lockup watchdogs 

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 <anton@ozlabs.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200630100218.62a3c3fb@kryten.localdomain
This commit is contained in:
Anton Blanchard 2020-06-30 10:02:18 +10:00 committed by Michael Ellerman
parent 3337bf41e0
commit 5c699396f5
1 changed files with 8 additions and 1 deletions
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9
arch/powerpc/xmon/xmon.c
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@ -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;