f5e74e8360
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
22 lines
647 B
C
22 lines
647 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_NMI_H
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#define _ASM_NMI_H
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#ifdef CONFIG_PPC_WATCHDOG
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extern void arch_touch_nmi_watchdog(void);
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long soft_nmi_interrupt(struct pt_regs *regs);
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void watchdog_nmi_set_timeout_pct(u64 pct);
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#else
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static inline void arch_touch_nmi_watchdog(void) {}
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static inline void watchdog_nmi_set_timeout_pct(u64 pct) {}
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#endif
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#ifdef CONFIG_NMI_IPI
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extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
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bool exclude_self);
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#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
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#endif
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extern void hv_nmi_check_nonrecoverable(struct pt_regs *regs);
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#endif /* _ASM_NMI_H */
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