diff options
author | Jeremy Fitzhardinge <jeremy@xensource.com> | 2007-07-17 18:37:04 -0700 |
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committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-07-18 08:47:42 -0700 |
commit | 688340ea34c61ad12473ccd837325b59aada9a93 (patch) | |
tree | 2862f4dca8d47fc4e6ecfaba2243d813344e3cd2 /include/asm-um/boot.h | |
parent | d572929cdd12a60732c3522f7cf011bfa29165cf (diff) |
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.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Dan Hecht <dhecht@vmware.com>
Cc: john stultz <johnstul@us.ibm.com>
Diffstat (limited to 'include/asm-um/boot.h')
0 files changed, 0 insertions, 0 deletions