diff options
| author |   Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2015-11-23 10:32:57 +0000 |
|---|---|---|
| committer |   David Vrabel <david.vrabel@citrix.com> | 2015-12-21 14:40:54 +0000 |
| commit | 02c2433b3aa6b57313c261c9811bbbe49528101c (patch) | |
| tree | 8081453d55ffc7b54560cd99e069a9890ee7ea68 /arch/arm/include/asm | |
| parent | missing include asm/paravirt.h in cputime.c (diff) | |
| download | linux-dev-02c2433b3aa6b57313c261c9811bbbe49528101c.tar.xz linux-dev-02c2433b3aa6b57313c261c9811bbbe49528101c.zip | |
arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on 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: Christopher Covington <cov@codeaurora.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/paravirt.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/include/asm/paravirt.h b/arch/arm/include/asm/paravirt.h new file mode 100644 index 000000000000..8435ff591386 --- /dev/null +++ b/arch/arm/include/asm/paravirt.h @@ -0,0 +1,20 @@ +#ifndef _ASM_ARM_PARAVIRT_H +#define _ASM_ARM_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 |