blob: c90696544176902262699186b32dc1c515311a15 [file] [log] [blame]
/* thread_info.h: common low-level thread information accessors
* Copyright (C) 2002 David Howells (
* - Incorporating suggestions made by Linus Torvalds
#include <linux/types.h>
struct timespec;
struct compat_timespec;
* System call restart block.
struct restart_block {
long (*fn)(struct restart_block *);
union {
struct {
unsigned long arg0, arg1, arg2, arg3;
/* For futex_wait and futex_wait_requeue_pi */
struct {
u32 __user *uaddr;
u32 val;
u32 flags;
u32 bitset;
u64 time;
u32 __user *uaddr2;
} futex;
/* For nanosleep */
struct {
clockid_t index;
struct timespec __user *rmtp;
struct compat_timespec __user *compat_rmtp;
u64 expires;
} nanosleep;
/* For poll */
struct {
struct pollfd __user *ufds;
int nfds;
int has_timeout;
unsigned long tv_sec;
unsigned long tv_nsec;
} poll;
extern long do_no_restart_syscall(struct restart_block *parm);
#include <linux/bitops.h>
#include <asm/thread_info.h>
#ifdef __KERNEL__
* flag set/clear/test wrappers
* - pass TIF_xxxx constants to these functions
static inline void set_ti_thread_flag(struct thread_info *ti, int flag)
set_bit(flag, (unsigned long *)&ti->flags);
static inline void clear_ti_thread_flag(struct thread_info *ti, int flag)
clear_bit(flag, (unsigned long *)&ti->flags);
static inline int test_and_set_ti_thread_flag(struct thread_info *ti, int flag)
return test_and_set_bit(flag, (unsigned long *)&ti->flags);
static inline int test_and_clear_ti_thread_flag(struct thread_info *ti, int flag)
return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
return test_bit(flag, (unsigned long *)&ti->flags);
#define set_thread_flag(flag) \
set_ti_thread_flag(current_thread_info(), flag)
#define clear_thread_flag(flag) \
clear_ti_thread_flag(current_thread_info(), flag)
#define test_and_set_thread_flag(flag) \
test_and_set_ti_thread_flag(current_thread_info(), flag)
#define test_and_clear_thread_flag(flag) \
test_and_clear_ti_thread_flag(current_thread_info(), flag)
#define test_thread_flag(flag) \
test_ti_thread_flag(current_thread_info(), flag)
#define set_need_resched() set_thread_flag(TIF_NEED_RESCHED)
#define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED)
* An arch can define its own version of set_restore_sigmask() to get the
* job done however works, with or without TIF_RESTORE_SIGMASK.
* set_restore_sigmask() - make sure saved_sigmask processing gets done
* This sets TIF_RESTORE_SIGMASK and ensures that the arch signal code
* will run before returning to user mode, to process the flag. For
* all callers, TIF_SIGPENDING is already set or it's no harm to set
* it. TIF_RESTORE_SIGMASK need not be in the set of bits that the
* arch code will notice on return to user mode, in case those bits
* are scarce. We set TIF_SIGPENDING here to ensure that the arch
* signal code always gets run when TIF_RESTORE_SIGMASK is set.
static inline void set_restore_sigmask(void)
#endif /* __KERNEL__ */
#endif /* _LINUX_THREAD_INFO_H */