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| author | Anton Blanchard <anton@ozlabs.org> | 2020-06-30 02:02:18 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-15 03:07:12 +0200 |
| commit | 5c699396f5f6cf6d67055af7b82c270d31fd831a (patch) | |
| tree | 851fa5ba527a97cb68e8692f9d8e0f470b585dc0 /arch/powerpc/xmon | |
| parent | selftests/powerpc: Purge extra count_pmc() calls of ebb selftests (diff) | |
| download | linux-5c699396f5f6cf6d67055af7b82c270d31fd831a.tar.xz linux-5c699396f5f6cf6d67055af7b82c270d31fd831a.zip | |
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
Diffstat (limited to 'arch/powerpc/xmon')
| -rw-r--r-- | arch/powerpc/xmon/xmon.c | 9 |
1 files changed, 8 insertions, 1 deletions
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; |