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AFNElJ94DElGarcbSvpixw5OeoH/ea2YaqgYaEqfiC5OVKR3lFSjSgAXCrj2ePTGUZtt7gw6RgGX1PXoog==@kvack.org X-Gm-Message-State: AOJu0YxqXmN7o/5bw67ChuojO4EU73DGscbDuODlnHa/mJ/R0h0CikQF J8NiF+fTRFuPSCcgHHwPh00hBnXu+iUHifwSq55teWSOgVphNk4vUTPPOksVukUCzHe1o5Wkr4A hBWkgpA== X-Received: from dlbsj2-n1.prod.google.com ([2002:a05:7022:f902:10b0:139:bb10:9e5c]) (user=surenb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:1707:b0:139:beba:8216 with SMTP id a92af1059eb24-139dbbafdc1mr2041359c88.30.1782413345354; Thu, 25 Jun 2026 11:49:05 -0700 (PDT) Date: Thu, 25 Jun 2026 11:48:57 -0700 In-Reply-To: <20260625184857.2193482-1-surenb@google.com> Mime-Version: 1.0 References: <20260625184857.2193482-1-surenb@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260625184857.2193482-3-surenb@google.com> Subject: [PATCH 2/2] mm: move alloc tag to mm From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, david@kernel.org, ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, hao.ge@linux.dev, jackmanb@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, surenb@google.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: F2B7A1C0014 X-Rspam-User: X-Stat-Signature: xz8gha5gykydo7syxt1uwrjzgazuxpy3 X-HE-Tag: 1782413346-699079 X-HE-Meta: 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 UpI4MXAE 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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 -- 2.55.0.rc0.799.gd6f94ed593-goog