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| author |   Laurent Dufour <ldufour@linux.ibm.com> | 2022-07-13 17:47:28 +0200 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-07-27 21:36:02 +1000 |
| commit | f5e74e836097d1004077390717d4bd95d4a2c27a (patch) | |
| tree | dff98d181edd6257d55b7ab6203e87036996b4db /arch/powerpc/include | |
| parent | watchdog: export lockup_detector_reconfigure (diff) | |
| download | linux-dev-f5e74e836097d1004077390717d4bd95d4a2c27a.tar.xz linux-dev-f5e74e836097d1004077390717d4bd95d4a2c27a.zip | |
powerpc/watchdog: introduce a NMI watchdog's factor
Introduce a factor which would apply to the NMI watchdog timeout.
This factor is a percentage added to the watchdog_tresh value. The value is
set under the watchdog_mutex protection and lockup_detector_reconfigure()
is called to recompute wd_panic_timeout_tb.
Once the factor is set, it remains until it is set back to 0, which means
no impact.
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220713154729.80789-4-ldufour@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/nmi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h index ea0e487f87b1..c3c7adef74de 100644 --- a/arch/powerpc/include/asm/nmi.h +++ b/arch/powerpc/include/asm/nmi.h @@ -5,8 +5,10 @@ #ifdef CONFIG_PPC_WATCHDOG extern void arch_touch_nmi_watchdog(void); long soft_nmi_interrupt(struct pt_regs *regs); +void watchdog_nmi_set_timeout_pct(u64 pct); #else static inline void arch_touch_nmi_watchdog(void) {} +static inline void watchdog_nmi_set_timeout_pct(u64 pct) {} #endif #ifdef CONFIG_NMI_IPI |