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Tsirkin" To: David Hildenbrand Cc: Nico Pache , 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, 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, 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: Re: [RFC 1/5] meminfo: add a per node counter for balloon drivers Message-ID: <20250313032001-mutt-send-email-mst@kernel.org> References: <20250312000700.184573-1-npache@redhat.com> <20250312000700.184573-2-npache@redhat.com> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: gZs_18pzDLQtjPXuh22pSEQXro3EQcXCusgs-WCjTCs_1741850445 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Mar 12, 2025 at 11:19:06PM +0100, David Hildenbrand wrote: > On 12.03.25 01:06, Nico Pache wrote: > > Add NR_BALLOON_PAGES counter to track memory used by balloon drivers and > > expose it through /proc/meminfo and other memory reporting interfaces. > > In balloon_page_enqueue_one(), we perform a > > __count_vm_event(BALLOON_INFLATE) > > and in balloon_page_list_dequeue > > __count_vm_event(BALLOON_DEFLATE); > > > Should we maybe simply do the per-node accounting similarly there? BTW should virtio mem be tied into this too, in some way? or is it too different? > -- > Cheers, > > David / dhildenb