diff options
| author | peterz@infradead.org <peterz@infradead.org> | 2023-09-21 12:45:12 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-09-21 19:22:08 +0200 |
| commit | cb8c4312afca1b2dc64107e7e7cea81911055612 (patch) | |
| tree | 47b639a216151b9f38126bffe53d46cd49cc1e3f /include | |
| parent | 43adf844951084c266f172561f84c5f8120dd60b (diff) | |
| download | linux-next-cb8c4312afca1b2dc64107e7e7cea81911055612.tar.gz linux-next-cb8c4312afca1b2dc64107e7e7cea81911055612.zip | |
futex: Add sys_futex_wait()
To complement sys_futex_waitv()/wake(), add sys_futex_wait(). This
syscall implements what was previously known as FUTEX_WAIT_BITSET
except it uses 'unsigned long' for the value and bitmask arguments,
takes timespec and clockid_t arguments for the absolute timeout and
uses FUTEX2 flags.
The 'unsigned long' allows FUTEX2_SIZE_U64 on 64bit platforms.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230921105248.164324363@noisy.programming.kicks-ass.net
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/syscalls.h | 4 | ||||
| -rw-r--r-- | include/uapi/asm-generic/unistd.h | 4 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index e174ed86da1d..11f3fdd1ee03 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -552,6 +552,10 @@ asmlinkage long sys_futex_waitv(struct futex_waitv *waiters, asmlinkage long sys_futex_wake(void __user *uaddr, unsigned long mask, int nr, unsigned int flags); +asmlinkage long sys_futex_wait(void __user *uaddr, unsigned long val, unsigned long mask, + unsigned int flags, struct __kernel_timespec __user *timespec, + clockid_t clockid); + asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, struct __kernel_timespec __user *rmtp); asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index f5454e6f4c6f..f6553bd5d213 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -824,9 +824,11 @@ __SYSCALL(__NR_cachestat, sys_cachestat) __SYSCALL(__NR_fchmodat2, sys_fchmodat2) #define __NR_futex_wake 454 __SYSCALL(__NR_futex_wake, sys_futex_wake) +#define __NR_futex_wait 455 +__SYSCALL(__NR_futex_wait, sys_futex_wait) #undef __NR_syscalls -#define __NR_syscalls 455 +#define __NR_syscalls 456 /* * 32 bit systems traditionally used different |