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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2019-07-03 20:51:29 -0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-30 17:27:37 +0200 |
| commit | a1c4423b02b2121108e3ea9580741e0f26309a48 (patch) | |
| tree | c2b6c2842065c7ed359f997580078ca00ad02fe3 /include/linux/cpuidle_haltpoll.h | |
| parent | 2cffe9f6b96fece065ee8522673c90e92ef2085d (diff) | |
| download | lwn-a1c4423b02b2121108e3ea9580741e0f26309a48.tar.gz lwn-a1c4423b02b2121108e3ea9580741e0f26309a48.zip | |
cpuidle-haltpoll: disable host side polling when kvm virtualized
When performing guest side polling, it is not necessary to
also perform host side polling.
So disable host side polling, via the new MSR interface,
when loading cpuidle-haltpoll driver.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle_haltpoll.h')
| -rw-r--r-- | include/linux/cpuidle_haltpoll.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/cpuidle_haltpoll.h b/include/linux/cpuidle_haltpoll.h new file mode 100644 index 000000000000..fe5954c2409e --- /dev/null +++ b/include/linux/cpuidle_haltpoll.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _CPUIDLE_HALTPOLL_H +#define _CPUIDLE_HALTPOLL_H + +#ifdef CONFIG_ARCH_CPUIDLE_HALTPOLL +#include <asm/cpuidle_haltpoll.h> +#else +static inline void arch_haltpoll_enable(void) +{ +} + +static inline void arch_haltpoll_disable(void) +{ +} +#endif +#endif |