diff options
Diffstat (limited to 'include/linux/interrupt.h')
| -rw-r--r-- | include/linux/interrupt.h | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index db43b58..5e865b5 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -11,13 +11,14 @@ #include <linux/irqnr.h> #include <linux/hardirq.h> #include <linux/irqflags.h> +#include <linux/smp.h> +#include <linux/percpu.h> #include <linux/hrtimer.h> #include <linux/kref.h> #include <linux/workqueue.h> #include <linux/atomic.h> #include <asm/ptrace.h> -#include <asm/irq.h> /* * These correspond to the IORESOURCE_IRQ_* defines in @@ -373,16 +374,6 @@ struct softirq_action asmlinkage void do_softirq(void); asmlinkage void __do_softirq(void); - -#ifdef __ARCH_HAS_DO_SOFTIRQ -void do_softirq_own_stack(void); -#else -static inline void do_softirq_own_stack(void) -{ - __do_softirq(); -} -#endif - extern void open_softirq(int nr, void (*action)(struct softirq_action *)); extern void softirq_init(void); extern void __raise_softirq_irqoff(unsigned int nr); @@ -390,6 +381,15 @@ extern void __raise_softirq_irqoff(unsigned int nr); extern void raise_softirq_irqoff(unsigned int nr); extern void raise_softirq(unsigned int nr); +/* This is the worklist that queues up per-cpu softirq work. + * + * send_remote_sendirq() adds work to these lists, and + * the softirq handler itself dequeues from them. The queues + * are protected by disabling local cpu interrupts and they must + * only be accessed by the local cpu that they are for. + */ +DECLARE_PER_CPU(struct list_head [NR_SOFTIRQS], softirq_work_list); + DECLARE_PER_CPU(struct task_struct *, ksoftirqd); static inline struct task_struct *this_cpu_ksoftirqd(void) @@ -397,6 +397,17 @@ static inline struct task_struct *this_cpu_ksoftirqd(void) return this_cpu_read(ksoftirqd); } +/* Try to send a softirq to a remote cpu. If this cannot be done, the + * work will be queued to the local cpu. + */ +extern void send_remote_softirq(struct call_single_data *cp, int cpu, int softirq); + +/* Like send_remote_softirq(), but the caller must disable local cpu interrupts + * and compute the current cpu, passed in as 'this_cpu'. + */ +extern void __send_remote_softirq(struct call_single_data *cp, int cpu, + int this_cpu, int softirq); + /* Tasklets --- multithreaded analogue of BHs. Main feature differing them of generic softirqs: tasklet |