diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/linux/nmi.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/linux/nmi.h')
| -rw-r--r-- | kernel/include/linux/nmi.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/kernel/include/linux/nmi.h b/kernel/include/linux/nmi.h new file mode 100644 index 000000000..3d46fb470 --- /dev/null +++ b/kernel/include/linux/nmi.h @@ -0,0 +1,86 @@ +/* + * linux/include/linux/nmi.h + */ +#ifndef LINUX_NMI_H +#define LINUX_NMI_H + +#include <linux/sched.h> +#include <asm/irq.h> + +/** + * touch_nmi_watchdog - restart NMI watchdog timeout. + * + * If the architecture supports the NMI watchdog, touch_nmi_watchdog() + * may be used to reset the timeout - for code which intentionally + * disables interrupts for a long time. This call is stateless. + */ +#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) +#include <asm/nmi.h> +extern void touch_nmi_watchdog(void); +#else +static inline void touch_nmi_watchdog(void) +{ + touch_softlockup_watchdog(); +} +#endif + +#if defined(CONFIG_HARDLOCKUP_DETECTOR) +extern void hardlockup_detector_disable(void); +#else +static inline void hardlockup_detector_disable(void) +{ +} +#endif + +/* + * Create trigger_all_cpu_backtrace() out of the arch-provided + * base function. Return whether such support was available, + * to allow calling code to fall back to some other mechanism: + */ +#ifdef arch_trigger_all_cpu_backtrace +static inline bool trigger_all_cpu_backtrace(void) +{ + arch_trigger_all_cpu_backtrace(true); + + return true; +} +static inline bool trigger_allbutself_cpu_backtrace(void) +{ + arch_trigger_all_cpu_backtrace(false); + return true; +} +#else +static inline bool trigger_all_cpu_backtrace(void) +{ + return false; +} +static inline bool trigger_allbutself_cpu_backtrace(void) +{ + return false; +} +#endif + +#ifdef CONFIG_LOCKUP_DETECTOR +int hw_nmi_is_cpu_stuck(struct pt_regs *); +u64 hw_nmi_get_sample_period(int watchdog_thresh); +extern int nmi_watchdog_enabled; +extern int soft_watchdog_enabled; +extern int watchdog_user_enabled; +extern int watchdog_thresh; +extern int sysctl_softlockup_all_cpu_backtrace; +struct ctl_table; +extern int proc_watchdog(struct ctl_table *, int , + void __user *, size_t *, loff_t *); +extern int proc_nmi_watchdog(struct ctl_table *, int , + void __user *, size_t *, loff_t *); +extern int proc_soft_watchdog(struct ctl_table *, int , + void __user *, size_t *, loff_t *); +extern int proc_watchdog_thresh(struct ctl_table *, int , + void __user *, size_t *, loff_t *); +#endif + +#ifdef CONFIG_HAVE_ACPI_APEI_NMI +#include <asm/nmi.h> +#endif + +#endif |