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Mon, 03 Feb 2025 14:56:20 -0800 (PST) From: Usama Arif To: sj@kernel.org, akpm@linux-foundation.org Cc: damon@lists.linux.dev, linux-mm@kvack.org, hannes@cmpxchg.org, david@redhat.com, kernel-team@meta.com, Usama Arif Subject: [PATCH v4 4/6] mm/damon: introduce DAMOS filter type hugepage Date: Mon, 3 Feb 2025 22:55:31 +0000 Message-ID: <20250203225604.44742-5-usamaarif642@gmail.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20250203225604.44742-1-usamaarif642@gmail.com> References: <20250203225604.44742-1-usamaarif642@gmail.com> MIME-Version: 1.0 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: CBE34C000D X-Stat-Signature: 1qrw179yoft4rkcw1cdph8xrg71a513y X-Rspam-User: X-HE-Tag: 1738623381-613976 X-HE-Meta: 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 Vts205yF 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 sTX/c9Lk JlkL2vsHnAmyRjScEc3bjypgw5a+0CZve2aXblUIMnaBVY2prbgC3g== X-Bogosity: Ham, tests=bogofilter, spamicity=0.007023, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This is to gather statistics to check if memory regions of specific access tempratures are backed by hugepages of a size in a specific range This filter can help to observe and prove the effectivenes of different schemes for shrinking/collapsing hugepages. Signed-off-by: Usama Arif --- include/linux/damon.h | 2 ++ mm/damon/paddr.c | 7 +++++++ mm/damon/sysfs-schemes.c | 1 + 3 files changed, 10 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 6f30ceeff215..5ba6c2114e3f 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -336,6 +336,7 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_ANON: Anonymous pages. * @DAMOS_FILTER_TYPE_MEMCG: Specific memcg's pages. * @DAMOS_FILTER_TYPE_YOUNG: Recently accessed pages. + * @DAMOS_FILTER_TYPE_HUGEPAGE: Page is part of a hugepage. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. * @NR_DAMOS_FILTER_TYPES: Number of filter types. @@ -355,6 +356,7 @@ enum damos_filter_type { DAMOS_FILTER_TYPE_ANON, DAMOS_FILTER_TYPE_MEMCG, DAMOS_FILTER_TYPE_YOUNG, + DAMOS_FILTER_TYPE_HUGEPAGE, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, NR_DAMOS_FILTER_TYPES, diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 3f59a3fdc391..34fe1eb664cc 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -227,6 +227,7 @@ static bool damos_pa_filter_match(struct damos_filter *filter, { bool matched = false; struct mem_cgroup *memcg; + size_t folio_sz; switch (filter->type) { case DAMOS_FILTER_TYPE_ANON: @@ -246,6 +247,12 @@ static bool damos_pa_filter_match(struct damos_filter *filter, if (matched) damon_folio_mkold(folio); break; +#if defined(CONFIG_PGTABLE_HAS_HUGE_LEAVES) + case DAMOS_FILTER_TYPE_HUGEPAGE: + folio_sz = folio_size(folio); + matched = filter->folio_size.min <= folio_sz && folio_sz <= filter->folio_size.max; + break; +#endif default: break; } diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index bc7ca43ca9c4..76aee3ab277e 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -330,6 +330,7 @@ static const char * const damon_sysfs_scheme_filter_type_strs[] = { "anon", "memcg", "young", + "hugepage", "addr", "target", };