From patchwork Wed Mar 12 00:06:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14012758 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64C061CF8B for ; Wed, 12 Mar 2025 00:07:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738069; cv=none; b=bOMu2KgGbdv29JjpxyF6ensAkAA7e4D1HQhJcBuipOdRZDOknj233jAFL5RiLgbFbpMEZ0x+oLcHWM2t8VXJYATRrbjHs02Am34obCE0T5WQXeu4NoouOwfPetD18mcMMYJWBThaiax3OJcc+lzA+ZQF+GHRqQiyUaoVztst/yY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738069; c=relaxed/simple; bh=jW6AtWVyMEM7z+apFni+IjLD4TPe9lTig4C1iMyf6J0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gi8Ot+Fmzzfxony9gyl8S8sHoL9IRtWnM2xdZiRNIs4vqKXGkLR0YWRr/5Qxr3PS4DTsu3hiEIezJ3ZCfoNI83UxE3QSNspQ3vpsbEI1QZnG2vWG4MN2jlUltucJSYvHWhrzGmwyTOWzt7lieNcF5M57j1kvoNNuL0aZ91H+Sfk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=JyNDqmP8; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JyNDqmP8" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741738066; 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=ceDeMBe52N2seuUa756T2OuNElv+sx4xmpEJqAZFNJ0=; b=JyNDqmP8FSmPprO18lh2oK8kozc+lT5HfJJfBXA87zGk01g85llVqb3Z0s4u1H2gOt3btN AwLsijjck4Q/ziA5X+ieEGchbJYyH0npfRd+AXtE/KZvww97uwQdkPvVBuLaiOxPKuZQ86 q9OXMsYDUvIMfdZ2SuXdNQNCmZZCPM4= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-223-vkQ8710FPFOYX9_CxAjz-Q-1; Tue, 11 Mar 2025 20:07:42 -0400 X-MC-Unique: vkQ8710FPFOYX9_CxAjz-Q-1 X-Mimecast-MFC-AGG-ID: vkQ8710FPFOYX9_CxAjz-Q_1741738058 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2CA19195608F; Wed, 12 Mar 2025 00:07:38 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.56]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 3CA451955F0F; Wed, 12 Mar 2025 00:07:30 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jerrin.shaji-george@broadcom.com, bcm-kernel-feedback-list@broadcom.com, arnd@arndb.de, gregkh@linuxfoundation.org, mst@redhat.com, david@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, nphamcs@gmail.com, yosry.ahmed@linux.dev, kanchana.p.sridhar@intel.com, alexander.atanasov@virtuozzo.com Subject: [RFC 1/5] meminfo: add a per node counter for balloon drivers Date: Tue, 11 Mar 2025 18:06:56 -0600 Message-ID: <20250312000700.184573-2-npache@redhat.com> In-Reply-To: <20250312000700.184573-1-npache@redhat.com> References: <20250312000700.184573-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Add NR_BALLOON_PAGES counter to track memory used by balloon drivers and expose it through /proc/meminfo and other memory reporting interfaces. Signed-off-by: Nico Pache --- fs/proc/meminfo.c | 2 ++ include/linux/mmzone.h | 1 + mm/memcontrol.c | 1 + mm/show_mem.c | 4 +++- mm/vmstat.c | 1 + 5 files changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 8ba9b1472390..83be312159c9 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -162,6 +162,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) show_val_kb(m, "Unaccepted: ", global_zone_page_state(NR_UNACCEPTED)); #endif + show_val_kb(m, "Balloon: ", + global_node_page_state(NR_BALLOON_PAGES)); hugetlb_report_meminfo(m); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 9540b41894da..71d3ff19267a 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -223,6 +223,7 @@ enum node_stat_item { #ifdef CONFIG_HUGETLB_PAGE NR_HUGETLB, #endif + NR_BALLOON_PAGES, NR_VM_NODE_STAT_ITEMS }; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 4de6acb9b8ec..182b44646bfa 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1377,6 +1377,7 @@ static const struct memory_stat memory_stats[] = { #ifdef CONFIG_HUGETLB_PAGE { "hugetlb", NR_HUGETLB }, #endif + { "nr_balloon_pages", NR_BALLOON_PAGES }, /* The memory events */ { "workingset_refault_anon", WORKINGSET_REFAULT_ANON }, diff --git a/mm/show_mem.c b/mm/show_mem.c index 43afb56abbd3..6af13bcd2ab3 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -260,6 +260,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z " pagetables:%lukB" " sec_pagetables:%lukB" " all_unreclaimable? %s" + " Balloon:%lukB" "\n", pgdat->node_id, K(node_page_state(pgdat, NR_ACTIVE_ANON)), @@ -285,7 +286,8 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z #endif K(node_page_state(pgdat, NR_PAGETABLE)), K(node_page_state(pgdat, NR_SECONDARY_PAGETABLE)), - str_yes_no(pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES)); + str_yes_no(pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES), + K(node_page_state(pgdat, NR_BALLOON_PAGES))); } for_each_populated_zone(zone) { diff --git a/mm/vmstat.c b/mm/vmstat.c index 16bfe1c694dd..d3b11891a942 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1276,6 +1276,7 @@ const char * const vmstat_text[] = { #ifdef CONFIG_HUGETLB_PAGE "nr_hugetlb", #endif + "nr_balloon_pages", /* system-wide enum vm_stat_item counters */ "nr_dirty_threshold", "nr_dirty_background_threshold", From patchwork Wed Mar 12 00:06:57 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14012759 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AFF5C1E86E for ; Wed, 12 Mar 2025 00:07:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738077; cv=none; b=vB4rjsHkIxRXHA4tdzY+YHtsNSQCaObHtuNTXl5p0ojTyc+qdgvVUtxs/jVVGh0FzRzqXYKrVFiO/mmAnLMyEQhudGCLcBuQkob+DUArD+OgPO0SM+BBZ9OAwzQEF3V416Dn8n7FuznDyN0V+R2OW7q9P9MQZ/lnJEbYvBnqV1s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738077; c=relaxed/simple; bh=14qdnQXr7GLQTPWGjRQDN0Vm1w/RNmHuEi4P4rqNoIs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MQc3kejS3M44ZHknrp09bTqkR71/HBOkKS/HQjojx4NDybLBgWBs8FiPBYQFwdy4eS2Y8IOCKEjOE/KTNMdUejdE0X1CJX8td8Ct36yGcJ2r3UxVk1EmK+qB27BgdA7NY7Q0wf6g2+z4B37F9lZd48Gq2DJnpjyvGw/rUxDUwk0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=T7gYQVbG; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="T7gYQVbG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741738074; 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=3y2AIYNwaPbCVrw04Rp+BR5zhMHEUrAViSTJpQkqU9Q=; b=T7gYQVbG8BK0wIpkJf+ZQFFUqglrXjuYOj2olB3w05obmDX2AuJtXNHP06y7FRTICzGL08 Utm82+l/VIlsUj9gpgQqW3L9xKdQOClnv+vLFwAM5adnDRqJE4BJQ242w+kyIZ1frhTERG D/eck011LHYtrzTcTqH50qn2F/KNHs8= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-620-xPY-jPQmOkWtvLqk-0dGRA-1; Tue, 11 Mar 2025 20:07:50 -0400 X-MC-Unique: xPY-jPQmOkWtvLqk-0dGRA-1 X-Mimecast-MFC-AGG-ID: xPY-jPQmOkWtvLqk-0dGRA_1741738067 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 5C0691956080; Wed, 12 Mar 2025 00:07:46 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.56]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 5DA631956094; Wed, 12 Mar 2025 00:07:38 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jerrin.shaji-george@broadcom.com, bcm-kernel-feedback-list@broadcom.com, arnd@arndb.de, gregkh@linuxfoundation.org, mst@redhat.com, david@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, nphamcs@gmail.com, yosry.ahmed@linux.dev, kanchana.p.sridhar@intel.com, alexander.atanasov@virtuozzo.com Subject: [RFC 2/5] virtio_balloon: update the NR_BALLOON_PAGES state Date: Tue, 11 Mar 2025 18:06:57 -0600 Message-ID: <20250312000700.184573-3-npache@redhat.com> In-Reply-To: <20250312000700.184573-1-npache@redhat.com> References: <20250312000700.184573-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Update the NR_BALLOON_PAGES counter when pages are added to or removed from the virtio balloon. Signed-off-by: Nico Pache --- drivers/virtio/virtio_balloon.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 89da052f4f68..406414dbb477 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -274,6 +274,8 @@ static unsigned int fill_balloon(struct virtio_balloon *vb, size_t num) set_page_pfns(vb, vb->pfns + vb->num_pfns, page); vb->num_pages += VIRTIO_BALLOON_PAGES_PER_PAGE; + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES, + VIRTIO_BALLOON_PAGES_PER_PAGE); if (!virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_DEFLATE_ON_OOM)) adjust_managed_page_count(page, -1); @@ -324,6 +326,8 @@ static unsigned int leak_balloon(struct virtio_balloon *vb, size_t num) set_page_pfns(vb, vb->pfns + vb->num_pfns, page); list_add(&page->lru, &pages); vb->num_pages -= VIRTIO_BALLOON_PAGES_PER_PAGE; + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES, + -VIRTIO_BALLOON_PAGES_PER_PAGE); } num_freed_pages = vb->num_pfns; From patchwork Wed Mar 12 00:06:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14012760 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F375F3D76 for ; Wed, 12 Mar 2025 00:08:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738082; cv=none; b=UGoVXcoTkd3yIUrXFqeGtkZhmnTCGIB4all53vcZSVIWCsAIrqxAiSgvdOTfVhwPT/9JYqhNbDuRsrRoP7fFWqEDkW5zDpbI99Qqrj7RtgbjAQwPrmosnUuTrU+IRk8/FyC7qXQMlOoOzcRAbWNTpBNvZr3nPwXEt2LdLGD5OC8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738082; c=relaxed/simple; bh=AzqFum6Agw13RjN3Fu1tKvuI6gP3XBpPLw2tmwLYzUE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tD15pDxOZ19YlU81+4oF9/LkKdHjtgDqJsbCRAriz5yV9Pf8/TrsoPS1k197ky/UKLUAnsw+kp9l6hio/0hdKWnVSz63A9gXjgB2HG+pFNa/we7ucrfbgzBB5DdtbDKSvRLjuYyKO4M29hyUOWvVXjdIqsdjKV0mgd0wz7xppoI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=NfAU0QZ9; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="NfAU0QZ9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741738079; 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=vPsYu1/Zt9JxInUUfAbvJhaRjTUPwV0c8VAQrmxs/V8=; b=NfAU0QZ9Z17Y46GjPu0nNsG9YwG/p15w210q+ZCUS7sCe7EYaITvgRr+ksy7+hv3C3EV9R Isaed0Uea0OUpLVdzuT+cgSgqlVLX99dxxQjO/eVqYqR4pFuATiQs16YmNJKmHqy00MGQM 515HApDz5LYG3+ETZCrKygobZONoGEw= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-681-DsGHc5fiN22ggfCluAAvjA-1; Tue, 11 Mar 2025 20:07:56 -0400 X-MC-Unique: DsGHc5fiN22ggfCluAAvjA-1 X-Mimecast-MFC-AGG-ID: DsGHc5fiN22ggfCluAAvjA_1741738073 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 58D9B1955BC1; Wed, 12 Mar 2025 00:07:53 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.56]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 91DF71955DDD; Wed, 12 Mar 2025 00:07:46 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jerrin.shaji-george@broadcom.com, bcm-kernel-feedback-list@broadcom.com, arnd@arndb.de, gregkh@linuxfoundation.org, mst@redhat.com, david@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, nphamcs@gmail.com, yosry.ahmed@linux.dev, kanchana.p.sridhar@intel.com, alexander.atanasov@virtuozzo.com Subject: [RFC 3/5] hv_balloon: update the NR_BALLOON_PAGES state Date: Tue, 11 Mar 2025 18:06:58 -0600 Message-ID: <20250312000700.184573-4-npache@redhat.com> In-Reply-To: <20250312000700.184573-1-npache@redhat.com> References: <20250312000700.184573-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Update the NR_BALLOON_PAGES counter when pages are added to or removed from the Hyper-V balloon. Signed-off-by: Nico Pache --- drivers/hv/hv_balloon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index fec2f18679e3..2b4080e51f97 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -1192,6 +1192,7 @@ static void free_balloon_pages(struct hv_dynmem_device *dm, __ClearPageOffline(pg); __free_page(pg); dm->num_pages_ballooned--; + mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, -1); adjust_managed_page_count(pg, 1); } } @@ -1221,6 +1222,7 @@ static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm, return i * alloc_unit; dm->num_pages_ballooned += alloc_unit; + mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, alloc_unit); /* * If we allocatted 2M pages; split them so we From patchwork Wed Mar 12 00:06:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14012761 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00B409461 for ; Wed, 12 Mar 2025 00:08:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738092; cv=none; b=PsQt8oDURWiQekzAJC3Iprwea7JyWVBint8SF3f0R7GZdksY7ju1mlGY9f+kaqx/weujsV6a3KC61tgC3Lut/2Oexr7OygDksvGU/QQb2ZyDpWHa81HNtZzDphETTSLZCo9EMgW7/mPPdj1pa20YUk/MoMVXax3TpRU/rYc0wXs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738092; c=relaxed/simple; bh=d/9U3Hs56MfO9ZDfHXmWmno1K8O1u1XuJHmhdH2F0w4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=p2e5tKKmK/cF6KfQ+4u9FohL8xscjyLuUgq+IqBRPhI2eCs+DrPLCHsZh6XuwfgC0wQEX0RdlEw8w8Jssk5iOdLZMdFq3rFx/TdawE9RTXDw4Tw7+50kqSUq7AbfAT2RW3k2wX/57c65c+nSo8tilRXpnG8wxqERalibda+z5mk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=TxoIEBgT; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="TxoIEBgT" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741738088; 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=F2Hs8hV+/gJc3OfaS9x8cWsCD/xR9fjklu355DFl/Jo=; b=TxoIEBgTuQGNlnkRh54485MlzgDPpLz+jgnZ8ygiaPqdmZ7Un1Viy1vOE7S5ynn+MWqWFq n/klXAdKNl/a4n/RJB9UpaEYo3/VqLPIETIPT1yVApXA2YlwsT7Nmu+baXpiviAUHzgKlG uLE0PpNSraXYspXtgX8GBVAMQ4BZu9I= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-569-hcKnUj3kOH-9CB9AP-czdw-1; Tue, 11 Mar 2025 20:08:04 -0400 X-MC-Unique: hcKnUj3kOH-9CB9AP-czdw-1 X-Mimecast-MFC-AGG-ID: hcKnUj3kOH-9CB9AP-czdw_1741738080 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 629D51800259; Wed, 12 Mar 2025 00:08:00 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.56]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 989161956094; Wed, 12 Mar 2025 00:07:53 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jerrin.shaji-george@broadcom.com, bcm-kernel-feedback-list@broadcom.com, arnd@arndb.de, gregkh@linuxfoundation.org, mst@redhat.com, david@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, nphamcs@gmail.com, yosry.ahmed@linux.dev, kanchana.p.sridhar@intel.com, alexander.atanasov@virtuozzo.com Subject: [RFC 4/5] vmx_balloon: update the NR_BALLOON_PAGES state Date: Tue, 11 Mar 2025 18:06:59 -0600 Message-ID: <20250312000700.184573-5-npache@redhat.com> In-Reply-To: <20250312000700.184573-1-npache@redhat.com> References: <20250312000700.184573-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Update the NR_BALLOON_PAGES counter when pages are added to or removed from the VMware balloon. Signed-off-by: Nico Pache --- drivers/misc/vmw_balloon.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index c817d8c21641..2c70b08c6fb3 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -673,6 +673,8 @@ static int vmballoon_alloc_page_list(struct vmballoon *b, vmballoon_stats_page_inc(b, VMW_BALLOON_PAGE_STAT_ALLOC, ctl->page_size); + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES, + vmballoon_page_in_frames(ctl->page_size)); } if (page) { @@ -915,6 +917,8 @@ static void vmballoon_release_page_list(struct list_head *page_list, list_for_each_entry_safe(page, tmp, page_list, lru) { list_del(&page->lru); __free_pages(page, vmballoon_page_order(page_size)); + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES, + -vmballoon_page_in_frames(page_size)); } if (n_pages) @@ -1129,7 +1133,6 @@ static void vmballoon_inflate(struct vmballoon *b) /* Update the balloon size */ atomic64_add(ctl.n_pages * page_in_frames, &b->size); - vmballoon_enqueue_page_list(b, &ctl.pages, &ctl.n_pages, ctl.page_size); From patchwork Wed Mar 12 00:07:00 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14012762 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D03F12E7F for ; Wed, 12 Mar 2025 00:08:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738098; cv=none; b=Jjsg+mITjVblbo37UhDeYwHWEsDcsIIYeci1GkeslWsu2wwwNFaC+eAjgFz87Q4DbW40LgdH83JEzAoyZh2NgdVCBtybr5aX9piwAs1kJ48Ufxyp9vSfj5srWFthx2u/0YVliIfJycXduv4bmD6ThrGM+2NO0SSS+NTB0WEmAfI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741738098; c=relaxed/simple; bh=7JAKR1B2EJs5OMc3kDKDyMYaNnMBEQeVe+0pTH470+w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qmT3pFz8MUW2cHrBzg2BUsLJ5sl5mXmDfOahPkWMzZi1hkhNE82MIcDVGUZMHwhZsgzzEiJWhR1rpw/ksEVjIcoZRiX6BBEYZIHf/qE1nPR5iXABRZ4VT3igYigl/5LBrW8qtuRmAb+cbt2qIJ4bBzSO8fpUwHJZ7qnaIS7QrfE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=BAXKzrVa; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BAXKzrVa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741738095; 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=dGPxM9RdXtkX+Els8nvXOJm60GkYwZd/fztNUeVaxvI=; b=BAXKzrVa2UcUeyKCZ60+1DRsaTld9aBR8Qpq5KfsblfeaYGCE8RjDZTpHax+2gM57G9mlM SISiVEsYhVcPpbjqFECaXls9LejjtX6Jpp1Huwc3nMFdfX/bP1wnDHpXx+UGrKgtdFdKXV zQU9O7yKEE754tkHDlmc87rKkMa9ZeI= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-687-a_RbZen0O8GYnddRn1Kahg-1; Tue, 11 Mar 2025 20:08:11 -0400 X-MC-Unique: a_RbZen0O8GYnddRn1Kahg-1 X-Mimecast-MFC-AGG-ID: a_RbZen0O8GYnddRn1Kahg_1741738088 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 942B7180AF4C; Wed, 12 Mar 2025 00:08:07 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.56]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id B44AA1955DDD; Wed, 12 Mar 2025 00:08:00 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jerrin.shaji-george@broadcom.com, bcm-kernel-feedback-list@broadcom.com, arnd@arndb.de, gregkh@linuxfoundation.org, mst@redhat.com, david@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, nphamcs@gmail.com, yosry.ahmed@linux.dev, kanchana.p.sridhar@intel.com, alexander.atanasov@virtuozzo.com Subject: [RFC 5/5] xen: balloon: update the NR_BALLOON_PAGES state Date: Tue, 11 Mar 2025 18:07:00 -0600 Message-ID: <20250312000700.184573-6-npache@redhat.com> In-Reply-To: <20250312000700.184573-1-npache@redhat.com> References: <20250312000700.184573-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Update the NR_BALLOON_PAGES counter when pages are added to or removed from the Xen balloon. Signed-off-by: Nico Pache --- drivers/xen/balloon.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 163f7f1d70f1..65d4e7fa1eb8 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -157,6 +157,8 @@ static void balloon_append(struct page *page) list_add(&page->lru, &ballooned_pages); balloon_stats.balloon_low++; } + inc_node_page_state(page, NR_BALLOON_PAGES); + wake_up(&balloon_wq); } @@ -179,6 +181,8 @@ static struct page *balloon_retrieve(bool require_lowmem) balloon_stats.balloon_low--; __ClearPageOffline(page); + dec_node_page_state(page, NR_BALLOON_PAGES); + return page; }