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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-03-31 11:51:56 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-03-31 11:51:56 +0100 |
| commit | 964fae8ac2fa6732856179a2532b0914dba5e4bb (patch) | |
| tree | 07d0e3081a6d82b97c3dda3204d44d7a2e990db9 /xen/include/xen/sched-if.h | |
| parent | f02c18fff786578ae73581e8d329d2d2e91e7142 (diff) | |
| download | xen-964fae8ac2fa6732856179a2532b0914dba5e4bb.tar.gz xen-964fae8ac2fa6732856179a2532b0914dba5e4bb.tar.bz2 xen-964fae8ac2fa6732856179a2532b0914dba5e4bb.zip | |
cpuidle: suspend/resume scheduler tick timer during cpu idle state entry/exit
cpuidle can collaborate with scheduler to reduce unnecessary timer
interrupt. For example, credit scheduler accounting timer
doesn't need to be active at idle time, so it can be stopped at
cpuidle entry and resumed at cpuidle exit. This patch implements this
function by adding two ops in scheduler: tick_suspend/tick_resume, and
implement them for credit scheduler
Signed-off-by: Yu Ke <ke.yu@intel.com>
Signed-off-by: Tian Kevin <kevin.tian@intel.com>
Diffstat (limited to 'xen/include/xen/sched-if.h')
| -rw-r--r-- | xen/include/xen/sched-if.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/include/xen/sched-if.h b/xen/include/xen/sched-if.h index f6ba9faa5c..5caf8245d2 100644 --- a/xen/include/xen/sched-if.h +++ b/xen/include/xen/sched-if.h @@ -77,6 +77,9 @@ struct scheduler { struct xen_domctl_scheduler_op *); void (*dump_settings) (void); void (*dump_cpu_state) (int); + + void (*tick_suspend) (void); + void (*tick_resume) (void); }; #endif /* __XEN_SCHED_IF_H__ */ |