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| author | Thomas Gleixner <tglx@linutronix.de> | 2015-03-25 13:11:04 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-04-01 14:23:00 +0200 |
| commit | f46481d0a7cb942b84145acb80ad43bdb1ff8eb4 (patch) | |
| tree | 93ef806641010b07d8405b144203d1e862d034d7 /include/linux/tick.h | |
| parent | 080873ce2d1abd8c0a2b8c87bfa0762546a6b713 (diff) | |
| download | lwn-f46481d0a7cb942b84145acb80ad43bdb1ff8eb4.tar.gz lwn-f46481d0a7cb942b84145acb80ad43bdb1ff8eb4.zip | |
tick/xen: Provide and use tick_suspend_local() and tick_resume_local()
Xen calls on every cpu into tick_resume() which is just wrong.
tick_resume() is for the syscore global suspend/resume
invocation. What XEN really wants is a per cpu local resume
function.
Provide a tick_resume_local() function and use it in XEN.
Also provide a complementary tick_suspend_local() and modify
tick_unfreeze() and tick_freeze(), respectively, to use the
new local tick resume/suspend functions.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[ Combined two patches, rebased, modified subject/changelog. ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1698741.eezk9tnXtG@vostro.rjw.lan
[ Merged to latest timers/core. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/tick.h')
| -rw-r--r-- | include/linux/tick.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index 7e07e0e3d898..a3d4d2840e7f 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -29,13 +29,13 @@ extern struct tick_device *tick_get_device(int cpu); extern void __init tick_init(void); extern void tick_freeze(void); extern void tick_unfreeze(void); -/* Should be core only, but XEN resume magic abuses this interface */ -extern void tick_resume(void); +/* Should be core only, but XEN resume magic requires this */ +extern void tick_resume_local(void); #else /* CONFIG_GENERIC_CLOCKEVENTS */ static inline void tick_init(void) { } static inline void tick_freeze(void) { } static inline void tick_unfreeze(void) { } -static inline void tick_resume(void) { } +static inline void tick_resume_local(void) { } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ #ifdef CONFIG_TICK_ONESHOT |