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bh=dkICobQxMdgEf0TF97vW9OrdNU0DfI1oQRf12CGk4fI=; b=3rOM5SEC3xp8snpAEQrN+aahpiTXQbshs2TiURbgN7S4TwHfs2iUs3v04ih14Z5xyOMZ6L 5NrjfowVQfPPEKwS/lnNLpCIepe0eofw7G7sDgz/035eHQX8pcZrftJ9I4GmeApflN61rA 71/0uX/aRnRrKPSMTXVS+dP0erFNX0c= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=EMC3jSZ2; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf20.hostedemail.com: domain of vbabka@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=vbabka@kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 15F2443B3A; Fri, 26 Jun 2026 09:12:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF9581F000E9; Fri, 26 Jun 2026 09:12:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782465142; bh=dkICobQxMdgEf0TF97vW9OrdNU0DfI1oQRf12CGk4fI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=EMC3jSZ2v3yLuAz5qdUWJ9WSCFp23pbz41AAqZbsl4riIibxTsPWZ2n3Fjv/L7RAm VSMLj3twJA3gbgtK0tAUbAx17ezPWOxrY5Mh+FMYIDVGLiXWUyPfvyeNW7HQBJc8NA TZc4LFsDWpRyP1bL04DzB8Z2Y+sv9J6jfciF4iZ+QqFH2YSPj51pG6N8LndFzQkg+X RUGRacusYefvNKT+ftI7ycfZxI99VcJD8EydP1f7vg7Q3pSKWQsK+b1csurbJteSah n1XIkY8nK63SL9pmAQiDRLsFxFHFK4NC+MuA0PPO1mZPt/955DRiKubBCaH0GGBRrv buclfOnIscuIg== Message-ID: <5090425b-093e-4e42-83e9-c7efe119e38e@kernel.org> Date: Fri, 26 Jun 2026 11:12:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] mm: move alloc tag to mm To: Suren Baghdasaryan , akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, david@kernel.org, ljs@kernel.org, liam@infradead.org, rppt@kernel.org, hao.ge@linux.dev, jackmanb@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20260625184857.2193482-1-surenb@google.com> <20260625184857.2193482-3-surenb@google.com> From: "Vlastimil Babka (SUSE)" Content-Language: en-US Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260625184857.2193482-3-surenb@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 11B451C0003 X-Stat-Signature: xqasy3xp1jtp6jyd6388qjgqedznsdc5 X-HE-Tag: 1782465142-195012 X-HE-Meta: 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 zzIBVrI4 Ub+JwPK3u62SZrLdOjT7dvSClUOvaEmEM+HPxla0qbpQPuRtstlczaIW7EZFi+m+2EqjiI2Gl4S+mo3ewJ8l2KzxDNQZfk9+dB+KO/wkKuLBhNuA+/dRPFt4B9gRhOhb/y5Try2ZSYdRM4bLZ73RXqlqozb2CMlJCidM94uP4k1FPJIoT/eWg66nao9JtfW7vq/f+hNdUruPHkcXOOxoNRv1NnnPj6Q4Ajvdbog9l3vbcwsypp+jJCkYxyckHh9U9cxospSfTNd+dkg/T4p91UgqlgVwkzXJsS062TncURjLRi657XsqROiG+11c+fOfpIHP4k7QDzIsiaYtouhAj0OAKFAU1fXcTcRswVrvYfPKGksmFMxRHW3vkxln65GBVbyDBwwcJjBdm9BCvij0zfHzW98Fttz6hjX2PtxhcIhGzP74= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 6/25/26 20:48, Suren Baghdasaryan wrote: > From: Lorenzo Stoakes > > The alloc tagging work is really mm-specific, so move alloc_tag.c to mm/ > and additionally update the MAINTAINERS entry to place it within memory > management and port over the Kconfig and Makefile code to mm. > > Signed-off-by: Lorenzo Stoakes > Signed-off-by: Suren Baghdasaryan Acked-by: Vlastimil Babka (SUSE) > --- > MAINTAINERS | 20 ++++++++++---------- > lib/Kconfig.debug | 28 ---------------------------- > lib/Makefile | 1 - > mm/Kconfig.debug | 28 ++++++++++++++++++++++++++++ > mm/Makefile | 1 + > {lib => mm}/alloc_tag.c | 0 > 6 files changed, 39 insertions(+), 39 deletions(-) > rename {lib => mm}/alloc_tag.c (100%) > > diff --git a/MAINTAINERS b/MAINTAINERS > index 0948dc573744..3cf3cf2311e2 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -16704,16 +16704,6 @@ F: mm/mm_init.c > F: mm/rodata_test.c > F: tools/testing/memblock/ > > -MEMORY ALLOCATION PROFILING > -M: Suren Baghdasaryan > -R: Hao Ge > -L: linux-mm@kvack.org > -S: Maintained > -F: Documentation/mm/allocation-profiling.rst > -F: include/linux/alloc_tag.h > -F: include/linux/pgalloc_tag.h > -F: lib/alloc_tag.c > - > MEMORY CONTROLLER DRIVERS > M: Krzysztof Kozlowski > L: linux-kernel@vger.kernel.org > @@ -16758,6 +16748,16 @@ T: quilt git://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new > F: mm/ > F: tools/mm/ > > +MEMORY MANAGEMENT - ALLOCATION PROFILING (ALLOC TAG) > +M: Suren Baghdasaryan > +R: Hao Ge > +L: linux-mm@kvack.org > +S: Maintained > +F: Documentation/mm/allocation-profiling.rst > +F: include/linux/alloc_tag.h > +F: include/linux/pgalloc_tag.h > +F: mm/alloc_tag.c > + > MEMORY MANAGEMENT - BALLOON > M: Andrew Morton > M: David Hildenbrand > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index 8ff5adcfe1e0..3762015522c3 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -1048,34 +1048,6 @@ config CODE_TAGGING > bool > select KALLSYMS > > -config MEM_ALLOC_PROFILING > - bool "Enable memory allocation profiling" > - default n > - depends on MMU > - depends on PROC_FS > - depends on !DEBUG_FORCE_WEAK_PER_CPU > - select CODE_TAGGING > - select PAGE_EXTENSION > - select SLAB_OBJ_EXT > - help > - Track allocation source code and record total allocation size > - initiated at that code location. The mechanism can be used to track > - memory leaks with a low performance and memory impact. > - > -config MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT > - bool "Enable memory allocation profiling by default" > - default y > - depends on MEM_ALLOC_PROFILING > - > -config MEM_ALLOC_PROFILING_DEBUG > - bool "Memory allocation profiler debugging" > - default n > - depends on MEM_ALLOC_PROFILING > - select MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT > - help > - Adds warnings with helpful error messages for memory allocation > - profiling. > - > source "lib/Kconfig.kasan" > source "lib/Kconfig.kfence" > source "lib/Kconfig.kmsan" > diff --git a/lib/Makefile b/lib/Makefile > index f33a24bf1c19..44f6538533a9 100644 > --- a/lib/Makefile > +++ b/lib/Makefile > @@ -197,7 +197,6 @@ obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \ > obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o > > obj-$(CONFIG_CODE_TAGGING) += codetag.o > -obj-$(CONFIG_MEM_ALLOC_PROFILING) += alloc_tag.o > > lib-$(CONFIG_GENERIC_BUG) += bug.o > > diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug > index 91b3e027b753..5737a504efbb 100644 > --- a/mm/Kconfig.debug > +++ b/mm/Kconfig.debug > @@ -320,3 +320,31 @@ config PER_VMA_LOCK_STATS > overhead in the page fault path. > > If in doubt, say N. > + > +config MEM_ALLOC_PROFILING > + bool "Enable memory allocation profiling" > + default n > + depends on MMU > + depends on PROC_FS > + depends on !DEBUG_FORCE_WEAK_PER_CPU > + select CODE_TAGGING > + select PAGE_EXTENSION > + select SLAB_OBJ_EXT > + help > + Track allocation source code and record total allocation size > + initiated at that code location. The mechanism can be used to track > + memory leaks with a low performance and memory impact. > + > +config MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT > + bool "Enable memory allocation profiling by default" > + default y > + depends on MEM_ALLOC_PROFILING > + > +config MEM_ALLOC_PROFILING_DEBUG > + bool "Memory allocation profiler debugging" > + default n > + depends on MEM_ALLOC_PROFILING > + select MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT > + help > + Adds warnings with helpful error messages for memory allocation > + profiling. > diff --git a/mm/Makefile b/mm/Makefile > index eff9f9e7e061..4fc713867b9b 100644 > --- a/mm/Makefile > +++ b/mm/Makefile > @@ -147,3 +147,4 @@ obj-$(CONFIG_SHRINKER_DEBUG) += shrinker_debug.o > obj-$(CONFIG_EXECMEM) += execmem.o > obj-$(CONFIG_TMPFS_QUOTA) += shmem_quota.o > obj-$(CONFIG_LAZY_MMU_MODE_KUNIT_TEST) += tests/lazy_mmu_mode_kunit.o > +obj-$(CONFIG_MEM_ALLOC_PROFILING) += alloc_tag.o > diff --git a/lib/alloc_tag.c b/mm/alloc_tag.c > similarity index 100% > rename from lib/alloc_tag.c > rename to mm/alloc_tag.c