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b=ih/gntzVyxcI92ke15Hx9iC61MtHnWWfhv41l9MHhsv1QmJNkamxSISz4uI9QLCI1 t++x7G/IBUHRqZbfCCEMdgpMVwgBHywEQhTGGRy260FwJp4zD6NDLv2TLFfGE+lqyU zgMe+R5p0KHCmprsfa191tZzICp1FtHBrYieFiu6QB1mISFckTkFxaJ28rHE6Am0GS eC0SwrpdPxK97WdLHkcqTfhM3D30sdBCrrIPMPk0C1419Ps196VCA52T02D7c/yzAv Lw2TrCSpjKg4VC0YTVqOL/EptCSmdqT+mbkFgt0TigY1GYN2HIhjqwubefLv+hMwwL QWNAfUQUbXDww== From: SeongJae Park To: Usama Arif Cc: SeongJae Park , akpm@linux-foundation.org, damon@lists.linux.dev, linux-mm@kvack.org Subject: Re: [PATCH v3 2/2] mm/damon: introduce DAMOS filter type hugepage Date: Mon, 20 Jan 2025 10:33:30 -0800 Message-Id: <20250120183330.35625-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250120181959.2564362-2-usamaarif642@gmail.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 34B78A0004 X-Stat-Signature: tibumcwqo9zx76w1xy57psfok1i1ttkb X-Rspam-User: X-Rspamd-Server: rspam12 X-HE-Tag: 1737398015-58593 X-HE-Meta: U2FsdGVkX1+BM7cpvzwTI07kUydI8gA6fSxJJeQbhZLi94+uVwIeLoiE3oCW131rUJ2rxxRcEVd/l1ppIBMEQOtde5L6dqQnik0bODNdReEeBLX0Hz8jxzGT6qNzJ86MEPvJl+aaw1vh13KSmVpplXMm6ULEKQcH8QYBDo26LE7SiCi+Fy1r0CHqSm4IAK9q9G1n9GjpYXIHNeo8q0ojZr3ByP1kCLaXM+n3a+I2zxyASmjWVjaNFDqcQ+dRND8Vff0DCzjRzrAonTtGWPWHh+XY7+SoNDaErKshguhGGUQH+usX9QoKL6gYO24+Iz7Grqx/PQ9mE0PJwZ9VJO+j7C0JsiY9U5/EcodLR366Jx4s8WdNToosZjDQeFutWQUAYN9AbX6YH/05JYuGU1N592u78d4A+u6Ejwe347lE4KDquv1hn/2yE98i0tEXKideTI41gxSr5btmIM9phnzH9+VnDKaGxDtVvvxNzHlJDpnT0OfwSRQV8hV8Ycu6R012qwP8DowhqT1iV+yNI8yiBvsrfJaVVo9tERonXlNjkvqf0JI6t3SNP2E9blJqEcQUMkcRymDjVLjjMOFfHKWH2iHR5txKVdxRpt+TIqEKy0sLEa8H1UiRN8vd3g3pzrVzNw+2lAAv+1lIqkDBi1OGvvde7VpM33G3Kr+toBQoi8SYf9zlM1faiy3l7yAo9Nta/3KmJnrSrYk5x7RA0AAnSbL3mjVAKK8yKow+rETYBfUYEEiesxOIfo7/GaiG5zTIQQViSYnZt3LQk4iDrCXRxQk4KVqkErlb0Cd+fBO9/BqeLn0VcelVWfC9VLvqOeCr9eqgJYFs8R7R/YoXViytEIgj9qA4IYdPmWzbtqj5fHtWgx+p9e1ExAOr3PY2HuOpbzmCdx6KmO5uywhegPgpg4a4+dN9NY9kqctUrk79WbVLSN0G1K3I2v445IfaLTSJJEZhwm4yivBh8g/DoR2 3808jkkB Z0uXYW26HNiDR38Zi/qjNu91r+B7hnGUbjE3udKvm1T4vpZgW9Ze7xhQ2MPPXDZIui6DqPFwLZaNmlHl0xi5f0S8saMgWtJhkpv/7iTU0mJL4jArsCqIfX+vikzeS+/KvOXfALLdQbQXEUS5W7BWo5Ku1LSJ17c4AC55uX2IlRIHOu09ldTCOwYUa6dBj+41KmSskitMByPPtVbSFIT9a/814bbC4M84Cv1CyDQHS341KbFuuheF0t/ayob1V9wcKDSAkJu9qju/q0CA5qDyPa1K9Jg== 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 Mon, 20 Jan 2025 18:19:59 +0000 Usama Arif wrote: > This is to gather statistics to check if memory regions of specific > access tempratures are backed by hugepages. This includes both THPs > and hugetlbfs. > This filter can help to observe and prove the effectivenes of > different schemes for shrinking/collapsing hugepages. > > Signed-off-by: Usama Arif Reviewed-by: SeongJae Park > --- > v2 -> v3: > - expose hugepage via sysfs even if the kernel is > built without hugepage support. DAMON will just > just return 0. (SJ Park) > > v1 -> v2: > - Wrap DAMOS_FILTER_TYPE_HUGEPAGE case with > CONFIG_PGTABLE_HAS_HUGE_LEAVES (SJ Park) Thank you for writing and patiently revisioning this nice patch! Thanks, SJ [...]