Messages in this thread | | | Date | Wed, 14 Mar 2007 12:34:23 -0800 | From | Zachary Amsden <> | Subject | Re: [PATCH/RFC] replace get_scheduled_cycles with sched_clock paravirt_op |
| |
Jeremy Fitzhardinge wrote: > Subject: Add a sched_clock paravirt_op > > The tsc-based get_scheduled_cycles interface is not a good match for > Xen's runstate accounting, which reports everything in nanoseconds. > > This patch replaces this interface with a sched_clock interface, which > matches both Xen and VMI's requirements. > > In order to do this, we: > 1. replace get_scheduled_cycles with sched_clock > 2. hoist cycles_2_ns into a common header > 3. update vmi accordingly > > One thing to note: because sched_clock is implemented as a weak function in > kernel/sched.c, we must define a real function in order to override this weak > binding. This means the usual paravirt_ops technique of using an inline > function won't work in this case. >
Acked-by: Zachary Amsden <zach@vmware.com>
- 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/
| |