diff options
Diffstat (limited to 'include/linux/workqueue.h')
| -rw-r--r-- | include/linux/workqueue.h | 48 |
1 files changed, 35 insertions, 13 deletions
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 1c49431f3121..39a0e215022a 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * workqueue.h --- work queue handling for Linux. */ @@ -12,12 +13,13 @@ #include <linux/threads.h> #include <linux/atomic.h> #include <linux/cpumask.h> +#include <linux/rcupdate.h> struct workqueue_struct; struct work_struct; typedef void (*work_func_t)(struct work_struct *work); -void delayed_work_timer_fn(unsigned long __data); +void delayed_work_timer_fn(struct timer_list *t); /* * The first word is the work queue pointer and the flags rolled into @@ -119,6 +121,14 @@ struct delayed_work { int cpu; }; +struct rcu_work { + struct work_struct work; + struct rcu_head rcu; + + /* target workqueue ->rcu uses to queue ->work */ + struct workqueue_struct *wq; +}; + /** * struct workqueue_attrs - A struct for workqueue attributes. * @@ -150,6 +160,11 @@ static inline struct delayed_work *to_delayed_work(struct work_struct *work) return container_of(work, struct delayed_work, work); } +static inline struct rcu_work *to_rcu_work(struct work_struct *work) +{ + return container_of(work, struct rcu_work, work); +} + struct execute_work { struct work_struct work; }; @@ -175,8 +190,7 @@ struct execute_work { #define __DELAYED_WORK_INITIALIZER(n, f, tflags) { \ .work = __WORK_INITIALIZER((n).work, (f)), \ - .timer = __TIMER_INITIALIZER(delayed_work_timer_fn, \ - 0, (unsigned long)&(n), \ + .timer = __TIMER_INITIALIZER(delayed_work_timer_fn,\ (tflags) | TIMER_IRQSAFE), \ } @@ -218,7 +232,7 @@ static inline unsigned int work_static(struct work_struct *work) { return 0; } \ __init_work((_work), _onstack); \ (_work)->data = (atomic_long_t) WORK_DATA_INIT(); \ - lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0); \ + lockdep_init_map(&(_work)->lockdep_map, "(work_completion)"#_work, &__key, 0); \ INIT_LIST_HEAD(&(_work)->entry); \ (_work)->func = (_func); \ } while (0) @@ -241,18 +255,17 @@ static inline unsigned int work_static(struct work_struct *work) { return 0; } #define __INIT_DELAYED_WORK(_work, _func, _tflags) \ do { \ INIT_WORK(&(_work)->work, (_func)); \ - __setup_timer(&(_work)->timer, delayed_work_timer_fn, \ - (unsigned long)(_work), \ - (_tflags) | TIMER_IRQSAFE); \ + __init_timer(&(_work)->timer, \ + delayed_work_timer_fn, \ + (_tflags) | TIMER_IRQSAFE); \ } while (0) #define __INIT_DELAYED_WORK_ONSTACK(_work, _func, _tflags) \ do { \ INIT_WORK_ONSTACK(&(_work)->work, (_func)); \ - __setup_timer_on_stack(&(_work)->timer, \ - delayed_work_timer_fn, \ - (unsigned long)(_work), \ - (_tflags) | TIMER_IRQSAFE); \ + __init_timer_on_stack(&(_work)->timer, \ + delayed_work_timer_fn, \ + (_tflags) | TIMER_IRQSAFE); \ } while (0) #define INIT_DELAYED_WORK(_work, _func) \ @@ -267,6 +280,12 @@ static inline unsigned int work_static(struct work_struct *work) { return 0; } #define INIT_DEFERRABLE_WORK_ONSTACK(_work, _func) \ __INIT_DELAYED_WORK_ONSTACK(_work, _func, TIMER_DEFERRABLE) +#define INIT_RCU_WORK(_work, _func) \ + INIT_WORK(&(_work)->work, (_func)) + +#define INIT_RCU_WORK_ONSTACK(_work, _func) \ + INIT_WORK_ONSTACK(&(_work)->work, (_func)) + /** * work_pending - Find out whether a work item is currently pending * @work: The work item in question @@ -398,7 +417,7 @@ __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active, static struct lock_class_key __key; \ const char *__lock_name; \ \ - __lock_name = #fmt#args; \ + __lock_name = "(wq_completion)"#fmt#args; \ \ __alloc_workqueue_key((fmt), (flags), (max_active), \ &__key, __lock_name, ##args); \ @@ -448,6 +467,7 @@ extern bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq, struct delayed_work *work, unsigned long delay); extern bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq, struct delayed_work *dwork, unsigned long delay); +extern bool queue_rcu_work(struct workqueue_struct *wq, struct rcu_work *rwork); extern void flush_workqueue(struct workqueue_struct *wq); extern void drain_workqueue(struct workqueue_struct *wq); @@ -457,15 +477,17 @@ extern int schedule_on_each_cpu(work_func_t func); int execute_in_process_context(work_func_t fn, struct execute_work *); extern bool flush_work(struct work_struct *work); -extern bool cancel_work(struct work_struct *work); extern bool cancel_work_sync(struct work_struct *work); extern bool flush_delayed_work(struct delayed_work *dwork); extern bool cancel_delayed_work(struct delayed_work *dwork); extern bool cancel_delayed_work_sync(struct delayed_work *dwork); +extern bool flush_rcu_work(struct rcu_work *rwork); + extern void workqueue_set_max_active(struct workqueue_struct *wq, int max_active); +extern struct work_struct *current_work(void); extern bool current_is_workqueue_rescuer(void); extern bool workqueue_congested(int cpu, struct workqueue_struct *wq); extern unsigned int work_busy(struct work_struct *work); |