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author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-07-12 11:49:59 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 10:54:14 -0700 |
commit | 9967f081f3086b6556d79f7a6f317fdcf7a313d6 (patch) | |
tree | b02852b18039d3b45c5436de39afb72783468164 /arch/x86/math-emu | |
parent | e11e4f058c98a984fd23e0f04c27a74e684b754b (diff) |
xen: drop xen_sched_clock in favour of using plain wallclock time
commit 8a22b9996b001c88f2bfb54c6de6a05fc39e177a upstream.
xen_sched_clock only counts unstolen time. In principle this should
be useful to the Linux scheduler so that it knows how much time a process
actually consumed. But in practice this doesn't work very well as the
scheduler expects the sched_clock time to be synchronized between
cpus. It also uses sched_clock to measure the time a task spends
sleeping, in which case "unstolen time" isn't meaningful.
So just use plain xen_clocksource_read to return wallclock nanoseconds
for sched_clock.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/math-emu')
0 files changed, 0 insertions, 0 deletions