From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:26218 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728786AbgKQPYT (ORCPT ); Tue, 17 Nov 2020 10:24:19 -0500 Subject: Re: [PATCH 1/2] KVM: s390: Add memcg accounting to KVM allocations References: <20201117151023.424575-1-borntraeger@de.ibm.com> <20201117151023.424575-2-borntraeger@de.ibm.com> From: Janosch Frank Message-ID: Date: Tue, 17 Nov 2020 16:22:51 +0100 MIME-Version: 1.0 In-Reply-To: <20201117151023.424575-2-borntraeger@de.ibm.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="6sMdO5WuoC7xWF7gUZKvadvAR6Op9P4pi" List-ID: To: Christian Borntraeger , Janosch Frank Cc: KVM , Cornelia Huck , David Hildenbrand , linux-s390 , Heiko Carstens This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --6sMdO5WuoC7xWF7gUZKvadvAR6Op9P4pi Content-Type: multipart/mixed; boundary="oszkB5zXk7RHUoHPiBvOhd3bHhY6K1XWn"; protected-headers="v1" From: Janosch Frank To: Christian Borntraeger , Janosch Frank Cc: KVM , Cornelia Huck , David Hildenbrand , linux-s390 , Heiko Carstens Message-ID: Subject: Re: [PATCH 1/2] KVM: s390: Add memcg accounting to KVM allocations References: <20201117151023.424575-1-borntraeger@de.ibm.com> <20201117151023.424575-2-borntraeger@de.ibm.com> In-Reply-To: <20201117151023.424575-2-borntraeger@de.ibm.com> --oszkB5zXk7RHUoHPiBvOhd3bHhY6K1XWn Content-Type: multipart/mixed; boundary="------------ACE1317D86CDEF8EB3357397" Content-Language: en-US This is a multi-part message in MIME format. --------------ACE1317D86CDEF8EB3357397 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 11/17/20 4:10 PM, Christian Borntraeger wrote: > Almost all kvm allocations in the s390x KVM code can be attributed to > process that triggers the allocation (in other words, no global > allocation for other guests). This will help the memcg controller to do= > the right decisions. >=20 > Signed-off-by: Christian Borntraeger > Acked-by: Heiko Carstens Acked-by: Janosch Frank > --- > arch/s390/kvm/guestdbg.c | 8 ++++---- > arch/s390/kvm/intercept.c | 2 +- > arch/s390/kvm/interrupt.c | 10 +++++----- > arch/s390/kvm/kvm-s390.c | 20 ++++++++++---------- > arch/s390/kvm/priv.c | 4 ++-- > arch/s390/kvm/pv.c | 6 +++--- > arch/s390/kvm/vsie.c | 4 ++-- > 7 files changed, 27 insertions(+), 27 deletions(-) >=20 > diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c > index 394a5f53805b..3765c4223bf9 100644 > --- a/arch/s390/kvm/guestdbg.c > +++ b/arch/s390/kvm/guestdbg.c > @@ -184,7 +184,7 @@ static int __import_wp_info(struct kvm_vcpu *vcpu, > if (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE) > return -EINVAL; >=20 > - wp_info->old_data =3D kmalloc(bp_data->len, GFP_KERNEL); > + wp_info->old_data =3D kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT); > if (!wp_info->old_data) > return -ENOMEM; > /* try to backup the original value */ > @@ -234,7 +234,7 @@ int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, > if (nr_wp > 0) { > wp_info =3D kmalloc_array(nr_wp, > sizeof(*wp_info), > - GFP_KERNEL); > + GFP_KERNEL_ACCOUNT); > if (!wp_info) { > ret =3D -ENOMEM; > goto error; > @@ -243,7 +243,7 @@ int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, > if (nr_bp > 0) { > bp_info =3D kmalloc_array(nr_bp, > sizeof(*bp_info), > - GFP_KERNEL); > + GFP_KERNEL_ACCOUNT); > if (!bp_info) { > ret =3D -ENOMEM; > goto error; > @@ -349,7 +349,7 @@ static struct kvm_hw_wp_info_arch *any_wp_changed(s= truct kvm_vcpu *vcpu) > if (!wp_info || !wp_info->old_data || wp_info->len <=3D 0) > continue; >=20 > - temp =3D kmalloc(wp_info->len, GFP_KERNEL); > + temp =3D kmalloc(wp_info->len, GFP_KERNEL_ACCOUNT); > if (!temp) > continue; >=20 > diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c > index e7a7c499a73f..72b25b7cc6ae 100644 > --- a/arch/s390/kvm/intercept.c > +++ b/arch/s390/kvm/intercept.c > @@ -398,7 +398,7 @@ int handle_sthyi(struct kvm_vcpu *vcpu) > if (!kvm_s390_pv_cpu_is_protected(vcpu) && (addr & ~PAGE_MASK)) > return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); >=20 > - sctns =3D (void *)get_zeroed_page(GFP_KERNEL); > + sctns =3D (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT); > if (!sctns) > return -ENOMEM; >=20 > diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c > index 2f177298c663..e3183bd05910 100644 > --- a/arch/s390/kvm/interrupt.c > +++ b/arch/s390/kvm/interrupt.c > @@ -1792,7 +1792,7 @@ struct kvm_s390_interrupt_info *kvm_s390_get_io_i= nt(struct kvm *kvm, > goto out; > } > gisa_out: > - tmp_inti =3D kzalloc(sizeof(*inti), GFP_KERNEL); > + tmp_inti =3D kzalloc(sizeof(*inti), GFP_KERNEL_ACCOUNT); > if (tmp_inti) { > tmp_inti->type =3D KVM_S390_INT_IO(1, 0, 0, 0); > tmp_inti->io.io_int_word =3D isc_to_int_word(isc); > @@ -2015,7 +2015,7 @@ int kvm_s390_inject_vm(struct kvm *kvm, > struct kvm_s390_interrupt_info *inti; > int rc; >=20 > - inti =3D kzalloc(sizeof(*inti), GFP_KERNEL); > + inti =3D kzalloc(sizeof(*inti), GFP_KERNEL_ACCOUNT); > if (!inti) > return -ENOMEM; >=20 > @@ -2414,7 +2414,7 @@ static int enqueue_floating_irq(struct kvm_device= *dev, > return -EINVAL; >=20 > while (len >=3D sizeof(struct kvm_s390_irq)) { > - inti =3D kzalloc(sizeof(*inti), GFP_KERNEL); > + inti =3D kzalloc(sizeof(*inti), GFP_KERNEL_ACCOUNT); > if (!inti) > return -ENOMEM; >=20 > @@ -2462,7 +2462,7 @@ static int register_io_adapter(struct kvm_device = *dev, > if (dev->kvm->arch.adapters[adapter_info.id] !=3D NULL) > return -EINVAL; >=20 > - adapter =3D kzalloc(sizeof(*adapter), GFP_KERNEL); > + adapter =3D kzalloc(sizeof(*adapter), GFP_KERNEL_ACCOUNT); > if (!adapter) > return -ENOMEM; >=20 > @@ -3290,7 +3290,7 @@ int kvm_s390_gib_init(u8 nisc) > goto out; > } >=20 > - gib =3D (struct kvm_s390_gib *)get_zeroed_page(GFP_KERNEL | GFP_DMA);= > + gib =3D (struct kvm_s390_gib *)get_zeroed_page(GFP_KERNEL_ACCOUNT | G= FP_DMA); > if (!gib) { > rc =3D -ENOMEM; > goto out; > diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c > index 425d3d75320b..282a13ece554 100644 > --- a/arch/s390/kvm/kvm-s390.c > +++ b/arch/s390/kvm/kvm-s390.c > @@ -1254,7 +1254,7 @@ static int kvm_s390_set_processor(struct kvm *kvm= , struct kvm_device_attr *attr) > ret =3D -EBUSY; > goto out; > } > - proc =3D kzalloc(sizeof(*proc), GFP_KERNEL); > + proc =3D kzalloc(sizeof(*proc), GFP_KERNEL_ACCOUNT); > if (!proc) { > ret =3D -ENOMEM; > goto out; > @@ -1416,7 +1416,7 @@ static int kvm_s390_get_processor(struct kvm *kvm= , struct kvm_device_attr *attr) > struct kvm_s390_vm_cpu_processor *proc; > int ret =3D 0; >=20 > - proc =3D kzalloc(sizeof(*proc), GFP_KERNEL); > + proc =3D kzalloc(sizeof(*proc), GFP_KERNEL_ACCOUNT); > if (!proc) { > ret =3D -ENOMEM; > goto out; > @@ -1444,7 +1444,7 @@ static int kvm_s390_get_machine(struct kvm *kvm, = struct kvm_device_attr *attr) > struct kvm_s390_vm_cpu_machine *mach; > int ret =3D 0; >=20 > - mach =3D kzalloc(sizeof(*mach), GFP_KERNEL); > + mach =3D kzalloc(sizeof(*mach), GFP_KERNEL_ACCOUNT); > if (!mach) { > ret =3D -ENOMEM; > goto out; > @@ -1812,7 +1812,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, s= truct kvm_s390_skeys *args) > if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX) > return -EINVAL; >=20 > - keys =3D kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL); > + keys =3D kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL_ACCO= UNT); > if (!keys) > return -ENOMEM; >=20 > @@ -1857,7 +1857,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, s= truct kvm_s390_skeys *args) > if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX) > return -EINVAL; >=20 > - keys =3D kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL); > + keys =3D kvmalloc_array(args->count, sizeof(uint8_t), GFP_KERNEL_ACCO= UNT); > if (!keys) > return -ENOMEM; >=20 > @@ -2625,7 +2625,7 @@ static void sca_dispose(struct kvm *kvm) >=20 > int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) > { > - gfp_t alloc_flags =3D GFP_KERNEL; > + gfp_t alloc_flags =3D GFP_KERNEL_ACCOUNT; > int i, rc; > char debug_name[16]; > static unsigned long sca_offset; > @@ -2670,7 +2670,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned lo= ng type) >=20 > BUILD_BUG_ON(sizeof(struct sie_page2) !=3D 4096); > kvm->arch.sie_page2 =3D > - (struct sie_page2 *) get_zeroed_page(GFP_KERNEL | GFP_DMA); > + (struct sie_page2 *) get_zeroed_page(GFP_KERNEL_ACCOUNT | GFP_DM= A); > if (!kvm->arch.sie_page2) > goto out_err; >=20 > @@ -2900,7 +2900,7 @@ static int sca_switch_to_extended(struct kvm *kvm= ) > if (kvm->arch.use_esca) > return 0; >=20 > - new_sca =3D alloc_pages_exact(sizeof(*new_sca), GFP_KERNEL|__GFP_ZERO= ); > + new_sca =3D alloc_pages_exact(sizeof(*new_sca), GFP_KERNEL_ACCOUNT | = __GFP_ZERO); > if (!new_sca) > return -ENOMEM; >=20 > @@ -3133,7 +3133,7 @@ void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *= vcpu) >=20 > int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu) > { > - vcpu->arch.sie_block->cbrlo =3D get_zeroed_page(GFP_KERNEL); > + vcpu->arch.sie_block->cbrlo =3D get_zeroed_page(GFP_KERNEL_ACCOUNT); > if (!vcpu->arch.sie_block->cbrlo) > return -ENOMEM; > return 0; > @@ -3243,7 +3243,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) > int rc; >=20 > BUILD_BUG_ON(sizeof(struct sie_page) !=3D 4096); > - sie_page =3D (struct sie_page *) get_zeroed_page(GFP_KERNEL); > + sie_page =3D (struct sie_page *) get_zeroed_page(GFP_KERNEL_ACCOUNT);= > if (!sie_page) > return -ENOMEM; >=20 > diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c > index cd74989ce0b0..9928f785c677 100644 > --- a/arch/s390/kvm/priv.c > +++ b/arch/s390/kvm/priv.c > @@ -879,7 +879,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu) > switch (fc) { > case 1: /* same handling for 1 and 2 */ > case 2: > - mem =3D get_zeroed_page(GFP_KERNEL); > + mem =3D get_zeroed_page(GFP_KERNEL_ACCOUNT); > if (!mem) > goto out_no_data; > if (stsi((void *) mem, fc, sel1, sel2)) > @@ -888,7 +888,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu) > case 3: > if (sel1 !=3D 2 || sel2 !=3D 2) > goto out_no_data; > - mem =3D get_zeroed_page(GFP_KERNEL); > + mem =3D get_zeroed_page(GFP_KERNEL_ACCOUNT); > if (!mem) > goto out_no_data; > handle_stsi_3_2_2(vcpu, (void *) mem); > diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c > index f5847f9dec7c..813b6e93dc83 100644 > --- a/arch/s390/kvm/pv.c > +++ b/arch/s390/kvm/pv.c > @@ -60,7 +60,7 @@ int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16= *rc, u16 *rrc) > if (kvm_s390_pv_cpu_get_handle(vcpu)) > return -EINVAL; >=20 > - vcpu->arch.pv.stor_base =3D __get_free_pages(GFP_KERNEL, > + vcpu->arch.pv.stor_base =3D __get_free_pages(GFP_KERNEL_ACCOUNT, > get_order(uv_info.guest_cpu_stor_len)); > if (!vcpu->arch.pv.stor_base) > return -ENOMEM; > @@ -72,7 +72,7 @@ int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16= *rc, u16 *rrc) > uvcb.stor_origin =3D (u64)vcpu->arch.pv.stor_base; >=20 > /* Alloc Secure Instruction Data Area Designation */ > - vcpu->arch.sie_block->sidad =3D __get_free_page(GFP_KERNEL | __GFP_ZE= RO); > + vcpu->arch.sie_block->sidad =3D __get_free_page(GFP_KERNEL_ACCOUNT | = __GFP_ZERO); > if (!vcpu->arch.sie_block->sidad) { > free_pages(vcpu->arch.pv.stor_base, > get_order(uv_info.guest_cpu_stor_len)); > @@ -120,7 +120,7 @@ static int kvm_s390_pv_alloc_vm(struct kvm *kvm) > struct kvm_memory_slot *memslot; >=20 > kvm->arch.pv.stor_var =3D NULL; > - kvm->arch.pv.stor_base =3D __get_free_pages(GFP_KERNEL, get_order(bas= e)); > + kvm->arch.pv.stor_base =3D __get_free_pages(GFP_KERNEL_ACCOUNT, get_o= rder(base)); > if (!kvm->arch.pv.stor_base) > return -ENOMEM; >=20 > diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c > index 4f3cbf6003a9..c5d0a58b2c29 100644 > --- a/arch/s390/kvm/vsie.c > +++ b/arch/s390/kvm/vsie.c > @@ -1234,7 +1234,7 @@ static struct vsie_page *get_vsie_page(struct kvm= *kvm, unsigned long addr) >=20 > mutex_lock(&kvm->arch.vsie.mutex); > if (kvm->arch.vsie.page_count < nr_vcpus) { > - page =3D alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA); > + page =3D alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO | GFP_DMA); > if (!page) { > mutex_unlock(&kvm->arch.vsie.mutex); > return ERR_PTR(-ENOMEM); > @@ -1336,7 +1336,7 @@ int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu) > void kvm_s390_vsie_init(struct kvm *kvm) > { > mutex_init(&kvm->arch.vsie.mutex); > - INIT_RADIX_TREE(&kvm->arch.vsie.addr_to_page, GFP_KERNEL); > + INIT_RADIX_TREE(&kvm->arch.vsie.addr_to_page, GFP_KERNEL_ACCOUNT); > } >=20 > /* Destroy the vsie data structures. 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OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsF5BAABCAAjFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl+z6ssFAwAAAAAACgkQ41TmuOI4ufg1 ehAAjS2bmCrbnqFEhSep9MXEaRoeF2bmaZVn3LbxFw8qv4MQsx7w19wPob0ClbQnagS9gl4V9LEX XUTosg+35RIKCyLvlOrHVPzy5y2Fd+mO8ne5kvCnF744/x4QVFoQkLPwsbkqMMy3AQiGosVgi9vO gmUAmhjn2usJYFzUfkyxPzhsPTaMKFDgpmrF4h3Sv5Yrtu+AGWSo9Bj8GNo/h7R8XQgi4GXKmtAq eCuNwzJjCYilgDlmHoNoXhOq23Ex6Xf/6n/Wgt7KOAY4HHLHqC/ys0uDUd6iV3hcH9U593WqcOSJ nu1+PZFZ0Q8ScJGptED9MZB9q7oWdb7RVNaQlF82hsftGuhCa1C696qOOSbfS4tWRcD0g7SdQl8z 3xZU+itmiWbiH59fqZQrb3oWSK906QvRPnAqEDaexskPgutXKpyWWVm1NJua/VQGG+Y2ZReQxJnJ 8L/sx4b8HHAd0I4K2ngg2eQeB+f5eRNKyCyTkKzAL0Iwk8M59eb7ZHlp+wD8r5z/MGY2UFPCDmyh B/G6dcK7HQziVt0HWcMWGARswr1htYsdKh8x1VuQcO5mhuu8KDOgaUmmMy9quU2sVhxFliInoo3k qGfdoxlWyqQQNebmKs7IpsbHMJsWoH4cEnOutBn1B8C75L+jAPhwQ9NuHUh6lh4b5o3zVoJcTZjt o8Q= =IJjy -----END PGP SIGNATURE----- --6sMdO5WuoC7xWF7gUZKvadvAR6Op9P4pi--