xen: Account for stolen time

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This patch accounts for the time stolen from our VCPUs.  Stolen time is
time where a vcpu is runnable and could be running, but all available
physical CPUs are being used for something else.

This accounting gets run on each timer interrupt, just as a way to get
it run relatively often, and when interesting things are going on.
Stolen time is not really used by much in the kernel; it is reported
in /proc/stats, and that's about it.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Rik van Riel <riel@redhat.com>

...

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Jeremy Fitzhardinge 2007-07-17 18:37:05 -07:00 • committed by Jeremy Fitzhardinge

parent 9a4029fd34

commit f91a8b447b

1 changed files with 150 additions and 9 deletions

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arch/i386/xen/time.c

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