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[2003:cb:c71c:4e00:b097:7075:f6ba:300a]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36d272290c2sm4408217f8f.92.2024.08.09.00.24.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 09 Aug 2024 00:24:35 -0700 (PDT) Message-ID: <017b4c44-efca-4160-abd6-ed84c36fa06b@redhat.com> Date: Fri, 9 Aug 2024 09:24:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/3] mm: add system wide stats items category To: Pasha Tatashin , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-cxl@vger.kernel.org, cerasuolodomenico@gmail.com, hannes@cmpxchg.org, j.granados@samsung.com, lizhijian@fujitsu.com, muchun.song@linux.dev, nphamcs@gmail.com, rientjes@google.com, rppt@kernel.org, souravpanda@google.com, vbabka@suse.cz, willy@infradead.org, dan.j.williams@intel.com, yi.zhang@redhat.com, alison.schofield@intel.com, yosryahmed@google.com References: <20240808213437.682006-1-pasha.tatashin@soleen.com> <20240808213437.682006-3-pasha.tatashin@soleen.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: ownt1a4m4jr163b7e7tw7k5bwwa38fob X-Rspamd-Queue-Id: 796B3140011 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1723188283-305297 X-HE-Meta: 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 ru0+1YEH k3zdRa+Z8gknUAkXZvhsSI9lOqAu+sNvtM9QTxqCp2CAAFf2OIw6o9F4OkMA0b0rgByFyX4Cvq78ZRewn6dBIYoJ59q8jzkPp6Ml8C2Ay+8cOaFWLe+gc5JFcNUtbAkxhEUWz8XEBnHcpULMn9pZFnYvJlzr484SCEZeYVyhjKfh2SIljlKIMlZojDwyjJit+fXvAE/yKCIc48AnDM8L0R1jrGyxEQz7HGMy3PWj0F9c7wVf1W5gDGqIeEfn6HjinbiNZnI1IylKj0w8MSu/8goDiaxTYfmRX2Ky7Xatmr5KxEuiOswIbRnWlpQx9LKZxNHWsMaoTkUrWm/XNy1o3Wptdk252e6zU5b75VLhqPYE/fO/FUXdMjXP974WTWEPLRIvKqpm0MnW72zHvR3THOIhAgZ+X+dkrsGO5Wx8uffCGPcVZBDpCfA7hkh7K/ehQs4XIMM+6nfWa6aCs/ubbcrqN6mJbdRHEeDi6 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 08.08.24 23:34, Pasha Tatashin wrote: > /proc/vmstat contains events and stats, events can only grow, but stats > can grow and shrink. > > vmstat has the following: > ------------------------- > NR_VM_ZONE_STAT_ITEMS: per-zone stats > NR_VM_NUMA_EVENT_ITEMS: per-numa events > NR_VM_NODE_STAT_ITEMS: per-numa stats > NR_VM_WRITEBACK_STAT_ITEMS: system-wide background-writeback and > dirty-throttling tresholds. > NR_VM_EVENT_ITEMS: system-wide events > ------------------------- > > Rename NR_VM_WRITEBACK_STAT_ITEMS to NR_VM_STAT_ITEMS, to track the > system-wide stats, we are going to add per-page metadata stats to this > category in the next patch. > > Also delete unused writeback_stat_name() function. > > Suggested-by: Yosry Ahmed > Signed-off-by: Pasha Tatashin > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb