diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/unwind.h | 63 | ||||
| -rw-r--r-- | include/linux/workqueue.h | 36 |
2 files changed, 26 insertions, 73 deletions
diff --git a/include/linux/unwind.h b/include/linux/unwind.h index 749928c..7760860 100644 --- a/include/linux/unwind.h +++ b/include/linux/unwind.h @@ -14,63 +14,6 @@ struct module; -#ifdef CONFIG_STACK_UNWIND - -#include <asm/unwind.h> - -#ifndef ARCH_UNWIND_SECTION_NAME -#define ARCH_UNWIND_SECTION_NAME ".eh_frame" -#endif - -/* - * Initialize unwind support. - */ -extern void unwind_init(void); -extern void unwind_setup(void); - -#ifdef CONFIG_MODULES - -extern void *unwind_add_table(struct module *, - const void *table_start, - unsigned long table_size); - -extern void unwind_remove_table(void *handle, int init_only); - -#endif - -extern int unwind_init_frame_info(struct unwind_frame_info *, - struct task_struct *, - /*const*/ struct pt_regs *); - -/* - * Prepare to unwind a blocked task. - */ -extern int unwind_init_blocked(struct unwind_frame_info *, - struct task_struct *); - -/* - * Prepare to unwind the currently running thread. - */ -extern int unwind_init_running(struct unwind_frame_info *, - asmlinkage int (*callback)(struct unwind_frame_info *, - void *arg), - void *arg); - -/* - * Unwind to previous to frame. Returns 0 if successful, negative - * number in case of an error. - */ -extern int unwind(struct unwind_frame_info *); - -/* - * Unwind until the return pointer is in user-land (or until an error - * occurs). Returns 0 if successful, negative number in case of - * error. - */ -extern int unwind_to_user(struct unwind_frame_info *); - -#else - struct unwind_frame_info {}; static inline void unwind_init(void) {} @@ -85,12 +28,12 @@ static inline void *unwind_add_table(struct module *mod, return NULL; } -#endif - static inline void unwind_remove_table(void *handle, int init_only) { } +#endif + static inline int unwind_init_frame_info(struct unwind_frame_info *info, struct task_struct *tsk, const struct pt_regs *regs) @@ -122,6 +65,4 @@ static inline int unwind_to_user(struct unwind_frame_info *info) return -ENOSYS; } -#endif - #endif /* _LINUX_UNWIND_H */ diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index edef8d5..2a7b38d 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -8,16 +8,21 @@ #include <linux/timer.h> #include <linux/linkage.h> #include <linux/bitops.h> +#include <asm/atomic.h> struct workqueue_struct; struct work_struct; typedef void (*work_func_t)(struct work_struct *work); +/* + * The first word is the work queue pointer and the flags rolled into + * one + */ +#define work_data_bits(work) ((unsigned long *)(&(work)->data)) + struct work_struct { - /* the first word is the work queue pointer and the flags rolled into - * one */ - unsigned long management; + atomic_long_t data; #define WORK_STRUCT_PENDING 0 /* T if work item pending execution */ #define WORK_STRUCT_NOAUTOREL 1 /* F if work item automatically released on exec */ #define WORK_STRUCT_FLAG_MASK (3UL) @@ -26,6 +31,9 @@ struct work_struct { work_func_t func; }; +#define WORK_DATA_INIT(autorelease) \ + ATOMIC_LONG_INIT((autorelease) << WORK_STRUCT_NOAUTOREL) + struct delayed_work { struct work_struct work; struct timer_list timer; @@ -36,13 +44,13 @@ struct execute_work { }; #define __WORK_INITIALIZER(n, f) { \ - .management = 0, \ + .data = WORK_DATA_INIT(0), \ .entry = { &(n).entry, &(n).entry }, \ .func = (f), \ } #define __WORK_INITIALIZER_NAR(n, f) { \ - .management = (1 << WORK_STRUCT_NOAUTOREL), \ + .data = WORK_DATA_INIT(1), \ .entry = { &(n).entry, &(n).entry }, \ .func = (f), \ } @@ -82,17 +90,21 @@ struct execute_work { /* * initialize all of a work item in one go + * + * NOTE! No point in using "atomic_long_set()": useing a direct + * assignment of the work data initializer allows the compiler + * to generate better code. */ #define INIT_WORK(_work, _func) \ do { \ - (_work)->management = 0; \ + (_work)->data = (atomic_long_t) WORK_DATA_INIT(0); \ INIT_LIST_HEAD(&(_work)->entry); \ PREPARE_WORK((_work), (_func)); \ } while (0) #define INIT_WORK_NAR(_work, _func) \ do { \ - (_work)->management = (1 << WORK_STRUCT_NOAUTOREL); \ + (_work)->data = (atomic_long_t) WORK_DATA_INIT(1); \ INIT_LIST_HEAD(&(_work)->entry); \ PREPARE_WORK((_work), (_func)); \ } while (0) @@ -114,15 +126,15 @@ struct execute_work { * @work: The work item in question */ #define work_pending(work) \ - test_bit(WORK_STRUCT_PENDING, &(work)->management) + test_bit(WORK_STRUCT_PENDING, work_data_bits(work)) /** * delayed_work_pending - Find out whether a delayable work item is currently * pending * @work: The work item in question */ -#define delayed_work_pending(work) \ - test_bit(WORK_STRUCT_PENDING, &(work)->work.management) +#define delayed_work_pending(w) \ + work_pending(&(w)->work) /** * work_release - Release a work item under execution @@ -143,7 +155,7 @@ struct execute_work { * This should also be used to release a delayed work item. */ #define work_release(work) \ - clear_bit(WORK_STRUCT_PENDING, &(work)->management) + clear_bit(WORK_STRUCT_PENDING, work_data_bits(work)) extern struct workqueue_struct *__create_workqueue(const char *name, @@ -188,7 +200,7 @@ static inline int cancel_delayed_work(struct delayed_work *work) ret = del_timer_sync(&work->timer); if (ret) - clear_bit(WORK_STRUCT_PENDING, &work->work.management); + work_release(&work->work); return ret; } |