| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 24 Aug 2011 10:53:08 -0700 From: Jeremy Fitzhardinge <jeremy@...p.org> To: "H. Peter Anvin" <hpa@...or.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>, the arch/x86 maintainers <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Nick Piggin <npiggin@...nel.dk>, Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Subject: [PATCH 14/18] x86/ticketlocks: use cmpxchg_flag for trylock From: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> --- arch/x86/include/asm/spinlock.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index 05fd59e..e208c8f 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -102,7 +102,7 @@ static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock) new.head_tail = old.head_tail + (1 << TICKET_SHIFT); /* cmpxchg is a full barrier, so nothing can move before it */ - return cmpxchg(&lock->head_tail, old.head_tail, new.head_tail) == old.head_tail; + return cmpxchg_flag(&lock->head_tail, old.head_tail, new.head_tail); } static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) -- 1.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists