On Wed, 14 Mar 2007 12:07:14 -0700 Jeremy Fitzhardinge <[EMAIL PROTECTED]> 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. include/asm/paravirt.h: In function 'paravirt_sched_clock': include/asm/paravirt.h:281: warning: implicit declaration of function 'PVOP_CALL0' include/asm/paravirt.h:281: error: expected expression before 'unsigned' - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
