From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6AF802264A3 for ; Thu, 28 Aug 2025 22:40:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756420823; cv=none; b=q56s+E9kTtUw/gR63NAeQC/GtN4ZwBTBtELqDVDl/YePkaRI8Z83d9SDXXN35mJJNdpT83VIWrkmWFkhowW+5VZDZG+q66eHd/z5gwepNWg/y/cPRcXb/76d2AVthxud29FQc7+rsN1zoQPUa1TfdnWPfaVnJ05oSUL+hyeYCPI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756420823; c=relaxed/simple; bh=+i8gDyVhb4ZkicP6/w5fNT91UVLOlja45TFvlNO8X4Y=; h=Date:To:From:Subject:Message-Id; b=gKGStpHLm8PEpCFWD160gSZD4sTNQHz+lgVypwj6qpZFfl9GSj0BsE2xagBqTT3koZ+nbyjl/gTzQVcp1ws/nMkBfOSkYH+eJQ8gtcXJUtKu9HTuEA5glLKHPMlNr12aNasXUzW9Asv5+wUD5HG6ReI9TLOtC2//TItwZjL7T+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=YZh0R9wL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="YZh0R9wL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA079C4CEEB; Thu, 28 Aug 2025 22:40:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1756420823; bh=+i8gDyVhb4ZkicP6/w5fNT91UVLOlja45TFvlNO8X4Y=; h=Date:To:From:Subject:From; b=YZh0R9wLLosATIHF64dcxc0BEbO5V5jPTpGgl0mV6lkZ9NX2PXoALfmhPvxCt8kfQ FqZqOaNj44sjX/gBFK0clrZwyrzcunkEmsK5eiBuz8fGLxixrpm9QJX22/iJKntUA3 eI3nDcczFIpvQGu1OE1OST/Ee7tKr091m0N8/eVE= Date: Thu, 28 Aug 2025 15:40:22 -0700 To: mm-commits@vger.kernel.org,zuoze1@huawei.com,yanquanmin1@huawei.com,wangkefeng.wang@huawei.com,vbabka@suse.cz,surenb@google.com,rppt@kernel.org,mhocko@suse.com,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,david@redhat.com,corbet@lwn.net,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-paddr-support-addr_unit-for-damos_pageout.patch added to mm-new branch Message-Id: <20250828224022.EA079C4CEEB@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon/paddr: support addr_unit for DAMOS_PAGEOUT has been added to the -mm mm-new branch. Its filename is mm-damon-paddr-support-addr_unit-for-damos_pageout.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-paddr-support-addr_unit-for-damos_pageout.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: SeongJae Park Subject: mm/damon/paddr: support addr_unit for DAMOS_PAGEOUT Date: Thu, 28 Aug 2025 10:12:34 -0700 Add support of addr_unit for DAMOS_PAGEOUT action handling from the DAMOS operation implementation for the physical address space. Link: https://lkml.kernel.org/r/20250828171242.59810-4-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Quanmin Yan Reviewed-by: SeongJae Park Cc: David Hildenbrand Cc: Jonathan Corbet Cc: Kefeng Wang Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: ze zuo Signed-off-by: Andrew Morton --- mm/damon/paddr.c | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) --- a/mm/damon/paddr.c~mm-damon-paddr-support-addr_unit-for-damos_pageout +++ a/mm/damon/paddr.c @@ -24,6 +24,19 @@ static phys_addr_t damon_pa_phys_addr( return (phys_addr_t)addr * addr_unit; } +static unsigned long damon_pa_core_addr( + phys_addr_t pa, unsigned long addr_unit) +{ + /* + * Use div_u64() for avoiding linking errors related with __udivdi3, + * __aeabi_uldivmod, or similar problems. This should also improve the + * performance optimization (read div_u64() comment for the detail). + */ + if (sizeof(pa) == 8 && sizeof(addr_unit) == 4) + return div_u64(pa, addr_unit); + return pa / addr_unit; +} + static void damon_pa_mkold(phys_addr_t paddr) { struct folio *folio = damon_get_folio(PHYS_PFN(paddr)); @@ -135,10 +148,11 @@ static bool damon_pa_invalid_damos_folio return false; } -static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s, +static unsigned long damon_pa_pageout(struct damon_region *r, + unsigned long addr_unit, struct damos *s, unsigned long *sz_filter_passed) { - unsigned long addr, applied; + phys_addr_t addr, applied; LIST_HEAD(folio_list); bool install_young_filter = true; struct damos_filter *filter; @@ -159,8 +173,8 @@ static unsigned long damon_pa_pageout(st damos_add_filter(s, filter); } - addr = r->ar.start; - while (addr < r->ar.end) { + addr = damon_pa_phys_addr(r->ar.start, addr_unit); + while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) { folio = damon_get_folio(PHYS_PFN(addr)); if (damon_pa_invalid_damos_folio(folio, s)) { addr += PAGE_SIZE; @@ -170,7 +184,7 @@ static unsigned long damon_pa_pageout(st if (damos_pa_filter_out(s, folio)) goto put_folio; else - *sz_filter_passed += folio_size(folio); + *sz_filter_passed += folio_size(folio) / addr_unit; folio_clear_referenced(folio); folio_test_clear_young(folio); @@ -189,7 +203,7 @@ put_folio: applied = reclaim_pages(&folio_list); cond_resched(); s->last_applied = folio; - return applied * PAGE_SIZE; + return damon_pa_core_addr(applied * PAGE_SIZE, addr_unit); } static inline unsigned long damon_pa_mark_accessed_or_deactivate( @@ -302,9 +316,11 @@ static unsigned long damon_pa_apply_sche struct damon_target *t, struct damon_region *r, struct damos *scheme, unsigned long *sz_filter_passed) { + unsigned long aunit = ctx->addr_unit; + switch (scheme->action) { case DAMOS_PAGEOUT: - return damon_pa_pageout(r, scheme, sz_filter_passed); + return damon_pa_pageout(r, aunit, scheme, sz_filter_passed); case DAMOS_LRU_PRIO: return damon_pa_mark_accessed(r, scheme, sz_filter_passed); case DAMOS_LRU_DEPRIO: _ Patches currently in -mm which might be from sj@kernel.org are mm-zswap-store-page_size-compression-failed-page-as-is.patch mm-zswap-store-page_size-compression-failed-page-as-is-fix.patch mm-zswap-store-page_size-compression-failed-page-as-is-v5.patch mm-damon-core-add-damon_ctx-addr_unit.patch mm-damon-paddr-support-addr_unit-for-access-monitoring.patch mm-damon-paddr-support-addr_unit-for-damos_pageout.patch mm-damon-paddr-support-addr_unit-for-damos_lru_prio.patch mm-damon-paddr-support-addr_unit-for-migrate_hotcold.patch mm-damon-paddr-support-addr_unit-for-damos_stat.patch mm-damon-sysfs-implement-addr_unit-file-under-context-dir.patch docs-mm-damon-design-document-address-unit-parameter.patch docs-admin-guide-mm-damon-usage-document-addr_unit-file.patch docs-abi-damon-document-addr_unit-file.patch