Messages in this thread Patch in this message | | | From | Yang Zhang <> | Subject | [RFC PATCH v2 4/7] x86/paravirt: Add update in x86/paravirt pv_idle_ops | Date | Tue, 29 Aug 2017 11:46:38 +0000 |
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.update is used to adjust the next poll time.
Signed-off-by: Yang Zhang <yang.zhang.wz@gmail.com> Signed-off-by: Quan Xu <quan.xu0@gmail.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Alok Kataria <akataria@vmware.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> Cc: Kees Cook <keescook@chromium.org> Cc: virtualization@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org --- arch/x86/include/asm/paravirt.h | 5 +++++ arch/x86/include/asm/paravirt_types.h | 1 + arch/x86/kernel/paravirt.c | 1 + 3 files changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 6d46760..32e1c06 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -207,6 +207,11 @@ static inline void paravirt_idle_poll(void) PVOP_VCALL0(pv_idle_ops.poll); } +static inline void paravirt_idle_update_poll_duration(unsigned long duration) +{ + PVOP_VCALL1(pv_idle_ops.update, duration); +} + static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries) { PVOP_VCALL2(pv_cpu_ops.alloc_ldt, ldt, entries); diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index cf45726..3b4f95a 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -326,6 +326,7 @@ struct pv_lock_ops { struct pv_idle_ops { void (*poll)(void); + void (*update)(unsigned long); } __no_randomize_layout; /* This contains all the paravirt structures: we get a convenient diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 1b5b247..a11b2c2 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -315,6 +315,7 @@ struct pv_time_ops pv_time_ops = { struct pv_idle_ops pv_idle_ops = { .poll = paravirt_nop, + .update = paravirt_nop, }; __visible struct pv_irq_ops pv_irq_ops = { -- 1.8.3.1
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