projects / mirror_ubuntu-zesty-kernel.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 UO |
27 | #if defined(CONFIG_HARDLOCKUP_DETECTOR) |
| 28 | extern void watchdog_enable_hardlockup_detector(bool val); | |
| 29 | extern bool watchdog_hardlockup_detector_is_enabled(void); | |
| 30 | #else | |
| 31 | static inline void watchdog_enable_hardlockup_detector(bool val) | |
| 32 | { | |
| 33 | } | |
| 34 | static inline bool watchdog_hardlockup_detector_is_enabled(void) | |
| 35 | { | |
| 36 | return true; | |
| 37 | } | |
| 38 | #endif | |
| 39 | ||
| 47cab6a7 IM |
40 | /* |
| 41 | * Create trigger_all_cpu_backtrace() out of the arch-provided | |
| 42 | * base function. Return whether such support was available, | |
| 43 | * to allow calling code to fall back to some other mechanism: | |
| 44 | */ | |
| 45 | #ifdef arch_trigger_all_cpu_backtrace | |
| 46 | static inline bool trigger_all_cpu_backtrace(void) | |
| 47 | { | |
| f3aca3d0 | 48 | arch_trigger_all_cpu_backtrace(true); |
| 47cab6a7 IM |
49 | |
| 50 | return true; | |
| 51 | } | |
| f3aca3d0 AT |
52 | static inline bool trigger_allbutself_cpu_backtrace(void) |
| 53 | { | |
| 54 | arch_trigger_all_cpu_backtrace(false); | |
| 55 | return true; | |
| 56 | } | |
| 47cab6a7 IM |
57 | #else |
| 58 | static inline bool trigger_all_cpu_backtrace(void) | |
| 59 | { | |
| 60 | return false; | |
| 61 | } | |
| f3aca3d0 AT |
62 | static inline bool trigger_allbutself_cpu_backtrace(void) |
| 63 | { | |
| 64 | return false; | |
| 65 | } | |
| bb81a09e AM |
66 | #endif |
| 67 | ||
| 58687acb | 68 | #ifdef CONFIG_LOCKUP_DETECTOR |
| 84e478c6 | 69 | int hw_nmi_is_cpu_stuck(struct pt_regs *); |
| 4eec42f3 | 70 | u64 hw_nmi_get_sample_period(int watchdog_thresh); |
| 3c00ea82 | 71 | extern int watchdog_user_enabled; |
| 586692a5 | 72 | extern int watchdog_thresh; |
| ed235875 | 73 | extern int sysctl_softlockup_all_cpu_backtrace; |
| 504d7cf1 | 74 | struct ctl_table; |
| 586692a5 MSB |
75 | extern int proc_dowatchdog(struct ctl_table *, int , |
| 76 | void __user *, size_t *, loff_t *); | |
| 84e478c6 DZ |
77 | #endif |
| 78 | ||
| 44a69f61 TN |
79 | #ifdef CONFIG_HAVE_ACPI_APEI_NMI |
| 80 | #include <asm/nmi.h> | |
| 81 | #endif | |
| 82 | ||
| 1da177e4 | 83 | #endif |