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gerrit-public.fairphone.software / kernel / msm-4.9 / 8cfb879d1b118e190bf9aea1b50da62c0d8a4a77 / . / include / linux / nmi.h
blob: 3d46fb4708e051ef78f4be83651f4a707a14b56d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * linux/include/linux/nmi.h
3 */
4#ifndef LINUX_NMI_H
5#define LINUX_NMI_H
6
Michal Schmidt99384062006-09-29 01:59:03 -0700[diff] [blame]7#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 */
Cong Wangd314d742012-03-23 15:01:51 -0700[diff] [blame]17#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
Andrew Mortonbb81a092006-12-07 02:14:01 +0100[diff] [blame]18#include <asm/nmi.h>
Don Zickus96a84c22010-11-29 17:07:16 -0500[diff] [blame]19extern void touch_nmi_watchdog(void);
20#else
Ingo Molnar5d0e6002007-02-13 13:26:24 +0100[diff] [blame]21static inline void touch_nmi_watchdog(void)
22{
23 touch_softlockup_watchdog();
24}
Don Zickus96a84c22010-11-29 17:07:16 -0500[diff] [blame]25#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]26
Ulrich Obergfell6e7458a2014-10-13 15:55:35 -0700[diff] [blame]27#if defined(CONFIG_HARDLOCKUP_DETECTOR)
Ulrich Obergfell692297d2015-04-14 15:44:19 -0700[diff] [blame]28extern void hardlockup_detector_disable(void);
Ulrich Obergfell6e7458a2014-10-13 15:55:35 -0700[diff] [blame]29#else
Ulrich Obergfell692297d2015-04-14 15:44:19 -0700[diff] [blame]30static inline void hardlockup_detector_disable(void)
Ulrich Obergfell6e7458a2014-10-13 15:55:35 -0700[diff] [blame]31{
32}
Ulrich Obergfell6e7458a2014-10-13 15:55:35 -0700[diff] [blame]33#endif
34
Ingo Molnar47cab6a2009-08-03 09:31:54 +0200[diff] [blame]35/*
36 * Create trigger_all_cpu_backtrace() out of the arch-provided
37 * base function. Return whether such support was available,
38 * to allow calling code to fall back to some other mechanism:
39 */
40#ifdef arch_trigger_all_cpu_backtrace
41static inline bool trigger_all_cpu_backtrace(void)
42{
Aaron Tomlinf3aca3d2014-06-23 13:22:05 -0700[diff] [blame]43 arch_trigger_all_cpu_backtrace(true);
Ingo Molnar47cab6a2009-08-03 09:31:54 +0200[diff] [blame]44
45 return true;
46}
Aaron Tomlinf3aca3d2014-06-23 13:22:05 -0700[diff] [blame]47static inline bool trigger_allbutself_cpu_backtrace(void)
48{
49 arch_trigger_all_cpu_backtrace(false);
50 return true;
51}
Ingo Molnar47cab6a2009-08-03 09:31:54 +0200[diff] [blame]52#else
53static inline bool trigger_all_cpu_backtrace(void)
54{
55 return false;
56}
Aaron Tomlinf3aca3d2014-06-23 13:22:05 -0700[diff] [blame]57static inline bool trigger_allbutself_cpu_backtrace(void)
58{
59 return false;
60}
Andrew Mortonbb81a092006-12-07 02:14:01 +0100[diff] [blame]61#endif
62
Don Zickus58687ac2010-05-07 17:11:44 -0400[diff] [blame]63#ifdef CONFIG_LOCKUP_DETECTOR
Don Zickus84e478c2010-02-05 21:47:05 -0500[diff] [blame]64int hw_nmi_is_cpu_stuck(struct pt_regs *);
Mandeep Singh Baines4eec42f2011-05-22 22:10:23 -0700[diff] [blame]65u64 hw_nmi_get_sample_period(int watchdog_thresh);
Ulrich Obergfell84d56e62015-04-14 15:43:55 -0700[diff] [blame]66extern int nmi_watchdog_enabled;
67extern int soft_watchdog_enabled;
Frederic Weisbecker3c00ea82013-05-19 20:45:15 +0200[diff] [blame]68extern int watchdog_user_enabled;
Mandeep Singh Baines586692a2011-05-22 22:10:22 -0700[diff] [blame]69extern int watchdog_thresh;
Aaron Tomlined235872014-06-23 13:22:05 -0700[diff] [blame]70extern int sysctl_softlockup_all_cpu_backtrace;
Don Zickus504d7cf2010-02-12 17:19:19 -0500[diff] [blame]71struct ctl_table;
Ulrich Obergfell83a80a32015-04-14 15:44:08 -0700[diff] [blame]72extern int proc_watchdog(struct ctl_table *, int ,
73 void __user *, size_t *, loff_t *);
74extern int proc_nmi_watchdog(struct ctl_table *, int ,
75 void __user *, size_t *, loff_t *);
76extern int proc_soft_watchdog(struct ctl_table *, int ,
77 void __user *, size_t *, loff_t *);
78extern int proc_watchdog_thresh(struct ctl_table *, int ,
79 void __user *, size_t *, loff_t *);
Don Zickus84e478c2010-02-05 21:47:05 -0500[diff] [blame]80#endif
81
Tomasz Nowicki44a69f62014-07-22 11:20:12 +0200[diff] [blame]82#ifdef CONFIG_HAVE_ACPI_APEI_NMI
83#include <asm/nmi.h>
84#endif
85
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]86#endif