From patchwork Tue Sep 8 20:10:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11764403 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2BF17138E for ; Tue, 8 Sep 2020 20:11:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2BBF21924 for ; Tue, 8 Sep 2020 20:11:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Nv6KNPMN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731208AbgIHUL3 (ORCPT ); Tue, 8 Sep 2020 16:11:29 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:23742 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731756AbgIHULH (ORCPT ); Tue, 8 Sep 2020 16:11:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599595864; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PHh9yTaQskuEJRAm5o+M7DhIX95+QKUF77hJAwduF0Q=; b=Nv6KNPMNzDgcM5fWxztNd0lkE/Zu4VPZAlMIOnI8sPiW2NtN6fxk5nQD9NUyPb6jT0euQ6 uX24B4jp1DLm3nomNNyIgoMClxahrYSGDChK8aphqMA326jz0c7fCBdV1ENn6vbrs+FmCh ISWm53fQYCkynv+6IlYiMDhmTY1VcIk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-212-J7S5DbiCMd-DHsm7Kygr7A-1; Tue, 08 Sep 2020 16:11:00 -0400 X-MC-Unique: J7S5DbiCMd-DHsm7Kygr7A-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F1A552FD02; Tue, 8 Sep 2020 20:10:55 +0000 (UTC) Received: from t480s.redhat.com (ovpn-115-46.ams2.redhat.com [10.36.115.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 92CFB5D9E8; Tue, 8 Sep 2020 20:10:42 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org, linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-s390@vger.kernel.org, Andrew Morton , David Hildenbrand , Wei Liu , Michal Hocko , Dan Williams , Jason Gunthorpe , Pankaj Gupta , Baoquan He , Wei Yang , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , "Rafael J. Wysocki" , Len Brown , Greg Kroah-Hartman , Vishal Verma , Dave Jiang , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , "Michael S. Tsirkin" , Jason Wang , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , "Oliver O'Halloran" , Pingfan Liu , Nathan Lynch , Libor Pechacek , Anton Blanchard , Leonardo Bras , linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 3/7] mm/memory_hotplug: prepare passing flags to add_memory() and friends Date: Tue, 8 Sep 2020 22:10:08 +0200 Message-Id: <20200908201012.44168-4-david@redhat.com> In-Reply-To: <20200908201012.44168-1-david@redhat.com> References: <20200908201012.44168-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org We soon want to pass flags, e.g., to mark added System RAM resources. mergeable. Prepare for that. This patch is based on a similar patch by Oscar Salvador: https://lkml.kernel.org/r/20190625075227.15193-3-osalvador@suse.de Acked-by: Wei Liu Cc: Andrew Morton Cc: Michal Hocko Cc: Dan Williams Cc: Jason Gunthorpe Cc: Pankaj Gupta Cc: Baoquan He Cc: Wei Yang Cc: Michael Ellerman Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "Rafael J. Wysocki" Cc: Len Brown Cc: Greg Kroah-Hartman Cc: Vishal Verma Cc: Dave Jiang Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Stephen Hemminger Cc: Wei Liu Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Christian Borntraeger Cc: David Hildenbrand Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: "Oliver O'Halloran" Cc: Pingfan Liu Cc: Nathan Lynch Cc: Libor Pechacek Cc: Anton Blanchard Cc: Leonardo Bras Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-acpi@vger.kernel.org Cc: linux-nvdimm@lists.01.org Cc: linux-hyperv@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: xen-devel@lists.xenproject.org Signed-off-by: David Hildenbrand Reviewed-by: Juergen Gross (Xen related part) --- arch/powerpc/platforms/powernv/memtrace.c | 2 +- arch/powerpc/platforms/pseries/hotplug-memory.c | 2 +- drivers/acpi/acpi_memhotplug.c | 2 +- drivers/base/memory.c | 2 +- drivers/dax/kmem.c | 2 +- drivers/hv/hv_balloon.c | 2 +- drivers/s390/char/sclp_cmd.c | 2 +- drivers/virtio/virtio_mem.c | 2 +- drivers/xen/balloon.c | 2 +- include/linux/memory_hotplug.h | 10 ++++++---- mm/memory_hotplug.c | 15 ++++++++------- 11 files changed, 23 insertions(+), 20 deletions(-) diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index 13b369d2cc454..a7475d18c671c 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -224,7 +224,7 @@ static int memtrace_online(void) ent->mem = 0; } - if (add_memory(ent->nid, ent->start, ent->size)) { + if (add_memory(ent->nid, ent->start, ent->size, 0)) { pr_err("Failed to add trace memory to node %d\n", ent->nid); ret += 1; diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 5d545b78111f9..54a888ea7f751 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -606,7 +606,7 @@ static int dlpar_add_lmb(struct drmem_lmb *lmb) block_sz = memory_block_size_bytes(); /* Add the memory */ - rc = __add_memory(lmb->nid, lmb->base_addr, block_sz); + rc = __add_memory(lmb->nid, lmb->base_addr, block_sz, 0); if (rc) { invalidate_lmb_associativity_index(lmb); return rc; diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index e294f44a78504..d91b3584d4b2b 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -207,7 +207,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) if (node < 0) node = memory_add_physaddr_to_nid(info->start_addr); - result = __add_memory(node, info->start_addr, info->length); + result = __add_memory(node, info->start_addr, info->length, 0); /* * If the memory block has been used by the kernel, add_memory() diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 4db3c660de831..2287bcf86480e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -432,7 +432,7 @@ static ssize_t probe_store(struct device *dev, struct device_attribute *attr, nid = memory_add_physaddr_to_nid(phys_addr); ret = __add_memory(nid, phys_addr, - MIN_MEMORY_BLOCK_SIZE * sections_per_block); + MIN_MEMORY_BLOCK_SIZE * sections_per_block, 0); if (ret) goto out; diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c index 7dcb2902e9b1b..8e66b28ef5bc6 100644 --- a/drivers/dax/kmem.c +++ b/drivers/dax/kmem.c @@ -95,7 +95,7 @@ int dev_dax_kmem_probe(struct dev_dax *dev_dax) * this as RAM automatically. */ rc = add_memory_driver_managed(numa_node, range.start, - range_len(&range), kmem_name); + range_len(&range), kmem_name, 0); res->flags |= IORESOURCE_BUSY; if (rc) { diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index 32e3bc0aa665a..0194bed1a5736 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn)); ret = add_memory(nid, PFN_PHYS((start_pfn)), - (HA_CHUNK << PAGE_SHIFT)); + (HA_CHUNK << PAGE_SHIFT), 0); if (ret) { pr_err("hot_add memory failed error is %d\n", ret); diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index a864b21af602a..a6a908244c742 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -406,7 +406,7 @@ static void __init add_memory_merged(u16 rn) if (!size) goto skip_add; for (addr = start; addr < start + size; addr += block_size) - add_memory(0, addr, block_size); + add_memory(0, addr, block_size, 0); skip_add: first_rn = rn; num = 1; diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 834b7c13ef3dc..314ab753139d1 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -424,7 +424,7 @@ static int virtio_mem_mb_add(struct virtio_mem *vm, unsigned long mb_id) dev_dbg(&vm->vdev->dev, "adding memory block: %lu\n", mb_id); return add_memory_driver_managed(nid, addr, memory_block_size_bytes(), - vm->resource_name); + vm->resource_name, 0); } /* diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 51427c752b37b..7bac38764513d 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void) mutex_unlock(&balloon_mutex); /* add_memory_resource() requires the device_hotplug lock */ lock_device_hotplug(); - rc = add_memory_resource(nid, resource); + rc = add_memory_resource(nid, resource, 0); unlock_device_hotplug(); mutex_lock(&balloon_mutex); diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 51a877fec8da8..5cd48332ce119 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -345,11 +345,13 @@ extern void set_zone_contiguous(struct zone *zone); extern void clear_zone_contiguous(struct zone *zone); extern void __ref free_area_init_core_hotplug(int nid); -extern int __add_memory(int nid, u64 start, u64 size); -extern int add_memory(int nid, u64 start, u64 size); -extern int add_memory_resource(int nid, struct resource *resource); +extern int __add_memory(int nid, u64 start, u64 size, unsigned long flags); +extern int add_memory(int nid, u64 start, u64 size, unsigned long flags); +extern int add_memory_resource(int nid, struct resource *resource, + unsigned long flags); extern int add_memory_driver_managed(int nid, u64 start, u64 size, - const char *resource_name); + const char *resource_name, + unsigned long flags); extern void move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn, unsigned long nr_pages, struct vmem_altmap *altmap, int migratetype); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 8e1cd18b5cf14..64b07f006bc10 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1039,7 +1039,8 @@ static int online_memory_block(struct memory_block *mem, void *arg) * * we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG */ -int __ref add_memory_resource(int nid, struct resource *res) +int __ref add_memory_resource(int nid, struct resource *res, + unsigned long flags) { struct mhp_params params = { .pgprot = PAGE_KERNEL }; u64 start, size; @@ -1118,7 +1119,7 @@ int __ref add_memory_resource(int nid, struct resource *res) } /* requires device_hotplug_lock, see add_memory_resource() */ -int __ref __add_memory(int nid, u64 start, u64 size) +int __ref __add_memory(int nid, u64 start, u64 size, unsigned long flags) { struct resource *res; int ret; @@ -1127,18 +1128,18 @@ int __ref __add_memory(int nid, u64 start, u64 size) if (IS_ERR(res)) return PTR_ERR(res); - ret = add_memory_resource(nid, res); + ret = add_memory_resource(nid, res, flags); if (ret < 0) release_memory_resource(res); return ret; } -int add_memory(int nid, u64 start, u64 size) +int add_memory(int nid, u64 start, u64 size, unsigned long flags) { int rc; lock_device_hotplug(); - rc = __add_memory(nid, start, size); + rc = __add_memory(nid, start, size, flags); unlock_device_hotplug(); return rc; @@ -1167,7 +1168,7 @@ EXPORT_SYMBOL_GPL(add_memory); * "System RAM ($DRIVER)". */ int add_memory_driver_managed(int nid, u64 start, u64 size, - const char *resource_name) + const char *resource_name, unsigned long flags) { struct resource *res; int rc; @@ -1185,7 +1186,7 @@ int add_memory_driver_managed(int nid, u64 start, u64 size, goto out_unlock; } - rc = add_memory_resource(nid, res); + rc = add_memory_resource(nid, res, flags); if (rc < 0) release_memory_resource(res);