cregit-Linux how code gets into the kernel

Release 4.7 include/linux/hardirq.h

Directory: include/linux
#ifndef LINUX_HARDIRQ_H

#define LINUX_HARDIRQ_H

#include <linux/preempt.h>
#include <linux/lockdep.h>
#include <linux/ftrace_irq.h>
#include <linux/vtime.h>
#include <asm/hardirq.h>


extern void synchronize_irq(unsigned int irq);
extern bool synchronize_hardirq(unsigned int irq);

#if defined(CONFIG_TINY_RCU)


static inline void rcu_nmi_enter(void) { }

Contributors

PersonTokensPropCommitsCommitProp
paul e. mckenneypaul e. mckenney8100.00%1100.00%
Total8100.00%1100.00%


static inline void rcu_nmi_exit(void) { }

Contributors

PersonTokensPropCommitsCommitProp
paul e. mckenneypaul e. mckenney8100.00%1100.00%
Total8100.00%1100.00%

#else extern void rcu_nmi_enter(void); extern void rcu_nmi_exit(void); #endif /* * It is safe to do non-atomic ops on ->hardirq_context, * because NMI handlers may not preempt and the ops are * always balanced, so the interrupted value of ->hardirq_context * will always be restored. */ #define __irq_enter() \ do { \ account_irq_enter_time(current); \ preempt_count_add(HARDIRQ_OFFSET); \ trace_hardirq_enter(); \ } while (0) /* * Enter irq context (on NO_HZ, update jiffies): */ extern void irq_enter(void); /* * Exit irq context without processing softirqs: */ #define __irq_exit() \ do { \ trace_hardirq_exit(); \ account_irq_exit_time(current); \ preempt_count_sub(HARDIRQ_OFFSET); \ } while (0) /* * Exit irq context and process softirqs if needed: */ extern void irq_exit(void); #define nmi_enter() \ do { \ printk_nmi_enter(); \ lockdep_off(); \ ftrace_nmi_enter(); \ BUG_ON(in_nmi()); \ preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET); \ rcu_nmi_enter(); \ trace_hardirq_enter(); \ } while (0) #define nmi_exit() \ do { \ trace_hardirq_exit(); \ rcu_nmi_exit(); \ BUG_ON(!in_nmi()); \ preempt_count_sub(NMI_OFFSET + HARDIRQ_OFFSET); \ ftrace_nmi_exit(); \ lockdep_on(); \ printk_nmi_exit(); \ } while (0) #endif /* LINUX_HARDIRQ_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
ingo molnaringo molnar3528.23%421.05%
paul e. mckenneypaul e. mckenney3427.42%210.53%
christoph hellwigchristoph hellwig2016.13%15.26%
thomas gleixnerthomas gleixner1411.29%210.53%
steven rostedtsteven rostedt97.26%315.79%
peter zijlstrapeter zijlstra64.84%315.79%
petr mladekpetr mladek21.61%15.26%
frederic weisbeckerfrederic weisbecker21.61%210.53%
martin schwidefskymartin schwidefsky21.61%15.26%
Total124100.00%19100.00%
Directory: include/linux
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}