blob: 2873baf5372a7b1484888566725e2c4dc7368d26 [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>
#include <linux/bug.h>
struct timespec;
struct compat_timespec;
#define current_thread_info() ((struct thread_info *)current)
* System call restart block.
struct restart_block {
long (*fn)(struct restart_block *);
union {
/* 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 clockid;
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 tif_need_resched() test_thread_flag(TIF_NEED_RESCHED)
static inline int arch_within_stack_frames(const void * const stack,
const void * const stackend,
const void *obj, unsigned long len)
return 0;
extern void __check_object_size(const void *ptr, unsigned long n,
bool to_user);
static __always_inline void check_object_size(const void *ptr, unsigned long n,
bool to_user)
if (!__builtin_constant_p(n))
__check_object_size(ptr, n, to_user);
static inline void check_object_size(const void *ptr, unsigned long n,
bool to_user)
{ }
#endif /* __KERNEL__ */
#endif /* _LINUX_THREAD_INFO_H */