From: Alexander Graf <agraf@suse.de> To: kvm-ppc <kvm-ppc@vger.kernel.org> Cc: KVM <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>, Paul Mackerras <paulus@samba.org> Subject: [PULL 11/12] KVM: PPC: Book3S HV: Fix preempted vcore stolen time calculation Date: Sat, 22 Aug 2015 11:21:34 +0200 [thread overview] Message-ID: <1440235295-244203-12-git-send-email-agraf@suse.de> (raw) In-Reply-To: <1440235295-244203-1-git-send-email-agraf@suse.de> From: Paul Mackerras <paulus@samba.org> Whenever a vcore state is VCORE_PREEMPT we need to be counting stolen time for it. This currently isn't the case when we have a vcore that no longer has any runnable threads in it but still has a runner task, so we do an explicit call to kvmppc_core_start_stolen() in that case. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> --- arch/powerpc/kvm/book3s_hv.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 3d02276..fad52f2 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -2283,9 +2283,14 @@ static void post_guest_process(struct kvmppc_vcore *vc, bool is_master) } list_del_init(&vc->preempt_list); if (!is_master) { - vc->vcore_state = vc->runner ? VCORE_PREEMPT : VCORE_INACTIVE; - if (still_running > 0) + if (still_running > 0) { kvmppc_vcore_preempt(vc); + } else if (vc->runner) { + vc->vcore_state = VCORE_PREEMPT; + kvmppc_core_start_stolen(vc); + } else { + vc->vcore_state = VCORE_INACTIVE; + } if (vc->n_runnable > 0 && vc->runner == NULL) { /* make sure there's a candidate runner awake */ vcpu = list_first_entry(&vc->runnable_threads, -- 1.8.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Graf <agraf@suse.de> To: kvm-ppc <kvm-ppc@vger.kernel.org> Cc: KVM <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>, Paul Mackerras <paulus@samba.org> Subject: [PULL 11/12] KVM: PPC: Book3S HV: Fix preempted vcore stolen time calculation Date: Sat, 22 Aug 2015 09:21:34 +0000 [thread overview] Message-ID: <1440235295-244203-12-git-send-email-agraf@suse.de> (raw) In-Reply-To: <1440235295-244203-1-git-send-email-agraf@suse.de> From: Paul Mackerras <paulus@samba.org> Whenever a vcore state is VCORE_PREEMPT we need to be counting stolen time for it. This currently isn't the case when we have a vcore that no longer has any runnable threads in it but still has a runner task, so we do an explicit call to kvmppc_core_start_stolen() in that case. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> --- arch/powerpc/kvm/book3s_hv.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 3d02276..fad52f2 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -2283,9 +2283,14 @@ static void post_guest_process(struct kvmppc_vcore *vc, bool is_master) } list_del_init(&vc->preempt_list); if (!is_master) { - vc->vcore_state = vc->runner ? VCORE_PREEMPT : VCORE_INACTIVE; - if (still_running > 0) + if (still_running > 0) { kvmppc_vcore_preempt(vc); + } else if (vc->runner) { + vc->vcore_state = VCORE_PREEMPT; + kvmppc_core_start_stolen(vc); + } else { + vc->vcore_state = VCORE_INACTIVE; + } if (vc->n_runnable > 0 && vc->runner = NULL) { /* make sure there's a candidate runner awake */ vcpu = list_first_entry(&vc->runnable_threads, -- 1.8.1.4
next prev parent reply other threads:[~2015-08-22 9:21 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-08-22 9:21 [PULL 00/12] ppc patch queue 2015-08-22 Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 01/12] KVM: PPC: fix suspicious use of conditional operator Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 02/12] KVM: PPC: Remove PPC970 from KVM_BOOK3S_64_HV text in Kconfig Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 03/12] KVM: PPC: Fix warnings from sparse Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 04/12] KVM: PPC: add missing pt_regs initialization Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 05/12] KVM: PPC: Book3S HV: Make use of unused threads when running guests Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 06/12] KVM: PPC: Book3S HV: Implement dynamic micro-threading on POWER8 Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 07/12] KVM: PPC: Book3S HV: Fix race in reading change bit when removing HPTE Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 08/12] KVM: PPC: Book3S HV: Fix bug in dirty page tracking Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 09/12] KVM: PPC: Book3S HV: Implement H_CLEAR_REF and H_CLEAR_MOD Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` [PULL 10/12] KVM: PPC: Book3S HV: Fix preempted vcore list locking Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 9:21 ` Alexander Graf [this message] 2015-08-22 9:21 ` [PULL 11/12] KVM: PPC: Book3S HV: Fix preempted vcore stolen time calculation Alexander Graf 2015-08-22 9:21 ` [PULL 12/12] KVM: PPC: Book3S: correct width in XER handling Alexander Graf 2015-08-22 9:21 ` Alexander Graf 2015-08-22 22:32 ` [PULL 00/12] ppc patch queue 2015-08-22 Paolo Bonzini 2015-08-22 22:32 ` Paolo Bonzini 2015-08-24 4:49 ` Alexander Graf 2015-08-24 4:49 ` Alexander Graf 2015-08-24 8:52 ` Paolo Bonzini 2015-08-24 8:52 ` Paolo Bonzini
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