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: Tue, 12 Feb 2008 16:08:32 +1000 From: Greg Ungerer <gerg@...pgear.com> To: torvalds@...ux-foundation.org Cc: gerg@...inux.org, linux-kernel@...r.kernel.org Subject: [M68KNOMMU]: avoid unneccessary use of xchg() in set_mb() Avoid unneccessary use of xchg() in set_mb(). Signed-off-by: Greg Ungerer <gerg@...inux.org> --- diff -Naurp linux-2.6.25-rc1/include/asm-m68knommu/system.h linux-2.6.x/include/asm-m68knommu/system.h --- linux-2.6.25-rc1/include/asm-m68knommu/system.h 2008-02-11 14:50:23.000000000 +1000 +++ linux-2.6.x/include/asm-m68knommu/system.h 2008-02-12 13:58:55.000000000 +1000 @@ -104,7 +104,7 @@ asmlinkage void resume(void); #define mb() asm volatile ("" : : :"memory") #define rmb() asm volatile ("" : : :"memory") #define wmb() asm volatile ("" : : :"memory") -#define set_mb(var, value) do { xchg(&var, value); } while (0) +#define set_mb(var, value) ({ (var) = (value); wmb(); }) #ifdef CONFIG_SMP #define smp_mb() mb() -- 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