On Wed, 2009-01-07 at 23:33 +0100, Ingo Molnar wrote: > * Gregory Haskins <ghask...@novell.com> wrote: > > > Can I ask a simple question in light of all this discussion? > > > > "Is get_task_struct() really that bad?" > > it dirties a cacheline and it also involves atomics. > > Also, it's a small design cleanliness issue to me: get_task_struct() > impacts the lifetime of an object - and if a locking primitive has > side-effects on object lifetimes that's never nice. >
True, but it's for one iteration * NR_CPUS, max. Best, -PWM > Ingo > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
