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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-05 21:56:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-05 21:56:55 +0200 |
| commit | b115d85a9584c98f9a7dec209d835462aa1adc09 (patch) | |
| tree | 332af6e2fafef47b9dc9891282b422eb5dcc5f3f /arch/arc | |
| parent | Merge branch 'x86-uaccess-cleanup': x86 uaccess header cleanups (diff) | |
| parent | locking/atomic: Correct (cmp)xchg() instrumentation (diff) | |
| download | linux-b115d85a9584c98f9a7dec209d835462aa1adc09.tar.xz linux-b115d85a9584c98f9a7dec209d835462aa1adc09.zip | |
Merge tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Introduce local{,64}_try_cmpxchg() - a slightly more optimal
primitive, which will be used in perf events ring-buffer code
- Simplify/modify rwsems on PREEMPT_RT, to address writer starvation
- Misc cleanups/fixes
* tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/atomic: Correct (cmp)xchg() instrumentation
locking/x86: Define arch_try_cmpxchg_local()
locking/arch: Wire up local_try_cmpxchg()
locking/generic: Wire up local{,64}_try_cmpxchg()
locking/atomic: Add generic try_cmpxchg{,64}_local() support
locking/rwbase: Mitigate indefinite writer starvation
locking/arch: Rename all internal __xchg() names to __arch_xchg()
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/cmpxchg.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h index c5b544a5fe81..e138fde067de 100644 --- a/arch/arc/include/asm/cmpxchg.h +++ b/arch/arc/include/asm/cmpxchg.h @@ -85,7 +85,7 @@ */ #ifdef CONFIG_ARC_HAS_LLSC -#define __xchg(ptr, val) \ +#define __arch_xchg(ptr, val) \ ({ \ __asm__ __volatile__( \ " ex %0, [%1] \n" /* set new value */ \ @@ -102,7 +102,7 @@ \ switch(sizeof(*(_p_))) { \ case 4: \ - _val_ = __xchg(_p_, _val_); \ + _val_ = __arch_xchg(_p_, _val_); \ break; \ default: \ BUILD_BUG(); \ |