Release 4.10 include/linux/nmi.h
/*
* linux/include/linux/nmi.h
*/
#ifndef LINUX_NMI_H
#define LINUX_NMI_H
#include <linux/sched.h>
#include <asm/irq.h>
/*
* The run state of the lockup detectors is controlled by the content of the
* 'watchdog_enabled' variable. Each lockup detector has its dedicated bit -
* bit 0 for the hard lockup detector and bit 1 for the soft lockup detector.
*
* 'watchdog_user_enabled', 'nmi_watchdog_enabled' and 'soft_watchdog_enabled'
* are variables that are only used as an 'interface' between the parameters
* in /proc/sys/kernel and the internal state bits in 'watchdog_enabled'. The
* 'watchdog_thresh' variable is handled differently because its value is not
* boolean, and the lockup detectors are 'suspended' while 'watchdog_thresh'
* is equal zero.
*/
#define NMI_WATCHDOG_ENABLED_BIT 0
#define SOFT_WATCHDOG_ENABLED_BIT 1
#define NMI_WATCHDOG_ENABLED (1 << NMI_WATCHDOG_ENABLED_BIT)
#define SOFT_WATCHDOG_ENABLED (1 << SOFT_WATCHDOG_ENABLED_BIT)
/**
* 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();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 11 | 91.67% | 1 | 50.00% |
| linus torvalds | linus torvalds | 1 | 8.33% | 1 | 50.00% |
| Total | 12 | 100.00% | 2 | 100.00% |
#endif
#if defined(CONFIG_HARDLOCKUP_DETECTOR)
extern void hardlockup_detector_disable(void);
#else
static inline void hardlockup_detector_disable(void) {}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ulrich obergfell | ulrich obergfell | 7 | 87.50% | 2 | 66.67% |
| guenter roeck | guenter roeck | 1 | 12.50% | 1 | 33.33% |
| Total | 8 | 100.00% | 3 | 100.00% |
#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_cpumask_backtrace
static inline bool trigger_all_cpu_backtrace(void)
{
arch_trigger_cpumask_backtrace(cpu_online_mask, false);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 7 | 36.84% | 1 | 25.00% |
| aaron tomlin | aaron tomlin | 7 | 36.84% | 1 | 25.00% |
| chris metcalf | chris metcalf | 4 | 21.05% | 1 | 25.00% |
| andrew morton | andrew morton | 1 | 5.26% | 1 | 25.00% |
| Total | 19 | 100.00% | 4 | 100.00% |
static inline bool trigger_allbutself_cpu_backtrace(void)
{
arch_trigger_cpumask_backtrace(cpu_online_mask, true);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris metcalf | chris metcalf | 10 | 52.63% | 1 | 50.00% |
| aaron tomlin | aaron tomlin | 9 | 47.37% | 1 | 50.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
{
arch_trigger_cpumask_backtrace(mask, false);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris metcalf | chris metcalf | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static inline bool trigger_single_cpu_backtrace(int cpu)
{
arch_trigger_cpumask_backtrace(cpumask_of(cpu), false);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris metcalf | chris metcalf | 16 | 69.57% | 1 | 33.33% |
| ingo molnar | ingo molnar | 5 | 21.74% | 1 | 33.33% |
| aaron tomlin | aaron tomlin | 2 | 8.70% | 1 | 33.33% |
| Total | 23 | 100.00% | 3 | 100.00% |
/* generic implementation */
void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
bool exclude_self,
void (*raise)(cpumask_t *mask));
bool nmi_cpu_backtrace(struct pt_regs *regs);
#else
static inline bool trigger_all_cpu_backtrace(void)
{
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 11 | 91.67% | 1 | 50.00% |
| andrew morton | andrew morton | 1 | 8.33% | 1 | 50.00% |
| Total | 12 | 100.00% | 2 | 100.00% |
static inline bool trigger_allbutself_cpu_backtrace(void)
{
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| aaron tomlin | aaron tomlin | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
{
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris metcalf | chris metcalf | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
static inline bool trigger_single_cpu_backtrace(int cpu)
{
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris metcalf | chris metcalf | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
#endif
#ifdef CONFIG_LOCKUP_DETECTOR
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 unsigned long watchdog_enabled;
extern unsigned long *watchdog_cpumask_bits;
extern atomic_t watchdog_park_in_progress;
#ifdef CONFIG_SMP
extern int sysctl_softlockup_all_cpu_backtrace;
extern int sysctl_hardlockup_all_cpu_backtrace;
#else
#define sysctl_softlockup_all_cpu_backtrace 0
#define sysctl_hardlockup_all_cpu_backtrace 0
#endif
extern bool is_hardlockup(void);
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 *);
extern int proc_watchdog_cpumask(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int lockup_detector_suspend(void);
extern void lockup_detector_resume(void);
#else
static inline int lockup_detector_suspend(void)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ulrich obergfell | ulrich obergfell | 12 | 100.00% | 2 | 100.00% |
| Total | 12 | 100.00% | 2 | 100.00% |
static inline void lockup_detector_resume(void)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ulrich obergfell | ulrich obergfell | 8 | 100.00% | 2 | 100.00% |
| Total | 8 | 100.00% | 2 | 100.00% |
#endif
#ifdef CONFIG_HAVE_ACPI_APEI_NMI
#include <asm/nmi.h>
#endif
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ulrich obergfell | ulrich obergfell | 150 | 30.24% | 7 | 22.58% |
| chris metcalf | chris metcalf | 115 | 23.19% | 2 | 6.45% |
| babu moger | babu moger | 44 | 8.87% | 1 | 3.23% |
| don zickus | don zickus | 43 | 8.67% | 6 | 19.35% |
| ingo molnar | ingo molnar | 39 | 7.86% | 2 | 6.45% |
| aaron tomlin | aaron tomlin | 34 | 6.85% | 2 | 6.45% |
| russell king | russell king | 26 | 5.24% | 1 | 3.23% |
| linus torvalds | linus torvalds | 14 | 2.82% | 1 | 3.23% |
| tomasz nowicki | tomasz nowicki | 8 | 1.61% | 1 | 3.23% |
| andrew morton | andrew morton | 7 | 1.41% | 1 | 3.23% |
| mandeep singh baines | mandeep singh baines | 6 | 1.21% | 2 | 6.45% |
| jiri kosina | jiri kosina | 4 | 0.81% | 1 | 3.23% |
| michal schmidt | michal schmidt | 3 | 0.60% | 1 | 3.23% |
| americo wang | americo wang | 1 | 0.20% | 1 | 3.23% |
| guenter roeck | guenter roeck | 1 | 0.20% | 1 | 3.23% |
| frederic weisbecker | frederic weisbecker | 1 | 0.20% | 1 | 3.23% |
| Total | 496 | 100.00% | 31 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.