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| author |   Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2015-11-23 10:33:49 +0000 |
|---|---|---|
| committer |   David Vrabel <david.vrabel@citrix.com> | 2015-12-21 14:40:54 +0000 |
| commit | dfd57bc3a5664b98eb7b477e8d7bb2591a5198cf (patch) | |
| tree | e44701938f29156839179744ab078b078f11d517 /arch/arm64/include/asm/paravirt.h | |
| parent | arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops (diff) | |
| download | linux-dev-dfd57bc3a5664b98eb7b477e8d7bb2591a5198cf.tar.xz linux-dev-dfd57bc3a5664b98eb7b477e8d7bb2591a5198cf.zip | |
arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM64.
Necessary duplication of paravirt.h and paravirt.c with ARM.
The only paravirt interface supported is pv_time_ops.steal_clock, so no
runtime pvops patching needed.
This allows us to make use of steal_account_process_tick for stolen
ticks accounting.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/paravirt.h')
| -rw-r--r-- | arch/arm64/include/asm/paravirt.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/paravirt.h b/arch/arm64/include/asm/paravirt.h new file mode 100644 index 000000000000..fd5f42886251 --- /dev/null +++ b/arch/arm64/include/asm/paravirt.h @@ -0,0 +1,20 @@ +#ifndef _ASM_ARM64_PARAVIRT_H +#define _ASM_ARM64_PARAVIRT_H + +#ifdef CONFIG_PARAVIRT +struct static_key; +extern struct static_key paravirt_steal_enabled; +extern struct static_key paravirt_steal_rq_enabled; + +struct pv_time_ops { + unsigned long long (*steal_clock)(int cpu); +}; +extern struct pv_time_ops pv_time_ops; + +static inline u64 paravirt_steal_clock(int cpu) +{ + return pv_time_ops.steal_clock(cpu); +} +#endif + +#endif |