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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-03 21:02:39 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-03 21:02:39 +0300 |
| commit | d7a0dab82fef61bebd34f2bbb9314b075153b646 (patch) | |
| tree | 1ec0a1d31ed8231bcce7f20c6b289e57a8969ca9 /arch/x86/include | |
| parent | 4b978934a440c1aafce986353001b03289eaa040 (diff) | |
| parent | 8db549491c4a3ce9e1d509b75f78516e497f48ec (diff) | |
| download | linux-d7a0dab82fef61bebd34f2bbb9314b075153b646.tar.xz | |
Merge branch 'core-smp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core SMP updates from Ingo Molnar:
"Two main change is generic vCPU pinning and physical CPU SMP-call
support, for Xen to be able to perform certain calls on specific
physical CPUs - by Juergen Gross"
* 'core-smp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp: Allocate smp_call_on_cpu() workqueue on stack too
hwmon: Use smp_call_on_cpu() for dell-smm i8k
dcdbas: Make use of smp_call_on_cpu()
xen: Add xen_pin_vcpu() to support calling functions on a dedicated pCPU
smp: Add function to execute a function synchronously on a CPU
virt, sched: Add generic vCPU pinning support
xen: Sync xen header
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/hypervisor.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h index 055ea9941dd5..67942b6ad4b7 100644 --- a/arch/x86/include/asm/hypervisor.h +++ b/arch/x86/include/asm/hypervisor.h @@ -43,6 +43,9 @@ struct hypervisor_x86 { /* X2APIC detection (run once per boot) */ bool (*x2apic_available)(void); + + /* pin current vcpu to specified physical cpu (run rarely) */ + void (*pin_vcpu)(int); }; extern const struct hypervisor_x86 *x86_hyper; @@ -56,6 +59,7 @@ extern const struct hypervisor_x86 x86_hyper_kvm; extern void init_hypervisor(struct cpuinfo_x86 *c); extern void init_hypervisor_platform(void); extern bool hypervisor_x2apic_available(void); +extern void hypervisor_pin_vcpu(int cpu); #else static inline void init_hypervisor(struct cpuinfo_x86 *c) { } static inline void init_hypervisor_platform(void) { } |