From mboxrd@z Thu Jan 1 00:00:00 1970 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 Message-ID: <1504007201-12904-5-git-send-email-yang.zhang.wz__4270.2249870219$1504007285$gmane$org@gmail.com> References: <1504007201-12904-1-git-send-email-yang.zhang.wz@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1504007201-12904-1-git-send-email-yang.zhang.wz@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: linux-kernel@vger.kernel.org Cc: Yang Zhang , Jeremy Fitzhardinge , kvm@vger.kernel.org, rkrcmar@redhat.com, peterz@infradead.org, Pan Xinhui , virtualization@lists.linux-foundation.org, "H. Peter Anvin" , Alok Kataria , wanpeng.li@hotmail.com, x86@kernel.org, Ingo Molnar , Kees Cook , Chris Wright , Andy Lutomirski , dmatlack@google.com, tglx@linutronix.de, Quan Xu , linux-doc@vger.kernel.org, mst@redhat.com, pbonzini@redhat.com, "Kirill A. Shutemov" List-Id: virtualization@lists.linuxfoundation.org .update is used to adjust the next poll time. Signed-off-by: Yang Zhang Signed-off-by: Quan Xu Cc: Jeremy Fitzhardinge Cc: Chris Wright Cc: Alok Kataria Cc: Rusty Russell Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: Peter Zijlstra Cc: Andy Lutomirski Cc: "Kirill A. Shutemov" Cc: Pan Xinhui Cc: Kees Cook 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