projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/include/linux/nmi.h | |
| 3 | */ | |
| 4 | #ifndef LINUX_NMI_H | |
| 5 | #define LINUX_NMI_H | |
| 6 | ||
| 9938406a | 7 | #include <linux/sched.h> |
| 1da177e4 LT |
8 | #include <asm/irq.h> |
| 9 | ||
| 10 | /** | |
| 11 | * touch_nmi_watchdog - restart NMI watchdog timeout. | |
| 12 | * | |
| 13 | * If the architecture supports the NMI watchdog, touch_nmi_watchdog() | |
| 14 | * may be used to reset the timeout - for code which intentionally | |
| 15 | * disables interrupts for a long time. This call is stateless. | |
| 16 | */ | |
| d314d74c | 17 | #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) |
| bb81a09e | 18 | #include <asm/nmi.h> |
| 96a84c20 DZ |
19 | extern void touch_nmi_watchdog(void); |
| 20 | #else | |
| 5d0e600d IM |
21 | static inline void touch_nmi_watchdog(void) |
| 22 | { | |
| 23 | touch_softlockup_watchdog(); | |
| 24 | } | |
| 96a84c20 | 25 | #endif |
| 1da177e4 | 26 | |
| 6e7458a6 | 27 | #if defined(CONFIG_HARDLOCKUP_DETECTOR) |
| 692297d8 | 28 | extern void hardlockup_detector_disable(void); |
| 6e7458a6 | 29 | #else |
| aacfbe6a | 30 | static inline void hardlockup_detector_disable(void) {} |
| 6e7458a6 UO |
31 | #endif |
| 32 | ||
| 47cab6a7 IM |
33 | /* |
| 34 | * Create trigger_all_cpu_backtrace() out of the arch-provided | |
| 35 | * base function. Return whether such support was available, | |
| 36 | * to allow calling code to fall back to some other mechanism: | |
| 37 | */ | |
| 38 | #ifdef arch_trigger_all_cpu_backtrace | |
| 39 | static inline bool trigger_all_cpu_backtrace(void) | |
| 40 | { | |
| f3aca3d0 | 41 | arch_trigger_all_cpu_backtrace(true); |
| 47cab6a7 IM |
42 | |
| 43 | return true; | |
| 44 | } | |
| f3aca3d0 AT |
45 | static inline bool trigger_allbutself_cpu_backtrace(void) |
| 46 | { | |
| 47 | arch_trigger_all_cpu_backtrace(false); | |
| 48 | return true; | |
| 49 | } | |
| 47cab6a7 IM |
50 | #else |
| 51 | static inline bool trigger_all_cpu_backtrace(void) | |
| 52 | { | |
| 53 | return false; | |
| 54 | } | |
| f3aca3d0 AT |
55 | static inline bool trigger_allbutself_cpu_backtrace(void) |
| 56 | { | |
| 57 | return false; | |
| 58 | } | |
| bb81a09e AM |
59 | #endif |
| 60 | ||
| 58687acb | 61 | #ifdef CONFIG_LOCKUP_DETECTOR |
| 84e478c6 | 62 | int hw_nmi_is_cpu_stuck(struct pt_regs *); |
| 4eec42f3 | 63 | u64 hw_nmi_get_sample_period(int watchdog_thresh); |
| 84d56e66 UO |
64 | extern int nmi_watchdog_enabled; |
| 65 | extern int soft_watchdog_enabled; | |
| 3c00ea82 | 66 | extern int watchdog_user_enabled; |
| 586692a5 | 67 | extern int watchdog_thresh; |
| fe4ba3c3 | 68 | extern unsigned long *watchdog_cpumask_bits; |
| ed235875 | 69 | extern int sysctl_softlockup_all_cpu_backtrace; |
| 504d7cf1 | 70 | struct ctl_table; |
| 83a80a39 UO |
71 | extern int proc_watchdog(struct ctl_table *, int , |
| 72 | void __user *, size_t *, loff_t *); | |
| 73 | extern int proc_nmi_watchdog(struct ctl_table *, int , | |
| 74 | void __user *, size_t *, loff_t *); | |
| 75 | extern int proc_soft_watchdog(struct ctl_table *, int , | |
| 76 | void __user *, size_t *, loff_t *); | |
| 77 | extern int proc_watchdog_thresh(struct ctl_table *, int , | |
| 78 | void __user *, size_t *, loff_t *); | |
| fe4ba3c3 CM |
79 | extern int proc_watchdog_cpumask(struct ctl_table *, int, |
| 80 | void __user *, size_t *, loff_t *); | |
| ec6a9066 UO |
81 | extern int lockup_detector_suspend(void); |
| 82 | extern void lockup_detector_resume(void); | |
| 999bbe49 | 83 | #else |
| ec6a9066 | 84 | static inline int lockup_detector_suspend(void) |
| 999bbe49 UO |
85 | { |
| 86 | return 0; | |
| 87 | } | |
| 88 | ||
| ec6a9066 | 89 | static inline void lockup_detector_resume(void) |
| 999bbe49 UO |
90 | { |
| 91 | } | |
| 84e478c6 DZ |
92 | #endif |
| 93 | ||
| 44a69f61 TN |
94 | #ifdef CONFIG_HAVE_ACPI_APEI_NMI |
| 95 | #include <asm/nmi.h> | |
| 96 | #endif | |
| 97 | ||
| 1da177e4 | 98 | #endif |