![]() | |||||||||||||
Messages in this thread |
> Am I correct? Or are there some easily-explained situations where mb() > really should be used for inter-CPU synchronization? Consider when one CPU does the following: while(!spinlock_acquire()) relax(); x=shared_value_protected_by_spinlock; We need to make sure we do not *read* the protected values (say due to prefetching) before other CPUs see our write that locks the spinlock. DS - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2006-09-08 05:55 [W:0.419 / U:0.080 seconds] ©2003-2008 Jasper Spaans | |||||||||||||