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| author | peterz@infradead.org <peterz@infradead.org> | 2023-09-21 13:45:12 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-09-21 20:22:08 +0300 |
| commit | cb8c4312afca1b2dc64107e7e7cea81911055612 (patch) | |
| tree | 47b639a216151b9f38126bffe53d46cd49cc1e3f /arch/x86/entry/syscalls | |
| parent | 43adf844951084c266f172561f84c5f8120dd60b (diff) | |
| download | linux-cb8c4312afca1b2dc64107e7e7cea81911055612.tar.xz | |
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 'arch/x86/entry/syscalls')
| -rw-r--r-- | arch/x86/entry/syscalls/syscall_32.tbl | 1 | ||||
| -rw-r--r-- | arch/x86/entry/syscalls/syscall_64.tbl | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 9e81323979b0..0f6616822bd5 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -458,3 +458,4 @@ 451 i386 cachestat sys_cachestat 452 i386 fchmodat2 sys_fchmodat2 454 i386 futex_wake sys_futex_wake +455 i386 futex_wait sys_futex_wait diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index d10a6003a7c9..ddf6288823ad 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -376,6 +376,7 @@ 452 common fchmodat2 sys_fchmodat2 453 64 map_shadow_stack sys_map_shadow_stack 454 common futex_wake sys_futex_wake +455 common futex_wait sys_futex_wait # # Due to a historical design error, certain syscalls are numbered differently |