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Fri, 17 Mar 2023 10:43:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id cHhuJkpEFGRgdwAAMHmgww (envelope-from ); Fri, 17 Mar 2023 10:43:22 +0000 From: Vlastimil Babka To: Christoph Lameter , David Rientjes , Joonsoo Kim , Pekka Enberg Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>, Roman Gushchin , Andrew Morton , linux-mm@kvack.org, rcu@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, linux-doc@vger.kernel.org, Vlastimil Babka , Lorenzo Stoakes Subject: [PATCH v2 1/6] mm/slob: remove CONFIG_SLOB Date: Fri, 17 Mar 2023 11:43:02 +0100 Message-Id: <20230317104307.29328-2-vbabka@suse.cz> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230317104307.29328-1-vbabka@suse.cz> References: <20230317104307.29328-1-vbabka@suse.cz> MIME-Version: 1.0 X-Rspamd-Queue-Id: A18BD4001F X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: 4xjsaobtsmp6uz1k9888abpnbq96byzs X-HE-Tag: 1679049805-681129 X-HE-Meta: U2FsdGVkX1+Ln3ZS0nva6Bx79R5FN/LUdbGdsSMoss3j2pu8BLjNg/6jpj0AU0AaM+MDhBf9wIqNrce13qDzUhq/4bs5aeu/OtdUuJQJkDDeC7He1+WMwOqwnk4EiY4dCGBWBWv6llCBQsrW0TDgskDiJ2oUjoGnJoz3YZoKmm4y07bH+mPZRsMWs028OnkBNPyAwetnoC/g6Eu7ndLJ4IpE4rkIlVAPfArXSKG1n4oF6HwtKvsQYsbU2Jy60K+InLP1LJHYxLhJacOL/KSbLadu00cuKNlju3Mqo/HRaRCPX669hG44cushljfCDDMAE0jJTkzxl7TOkV+j2Vx8nG0xjY0314UhjHN68ONW5p5fjvaAgz1877teKPWwLIf6wqjvMqUlKJOS6SjSrNdvBvsq7S0BxexKqAF8mObh07jth/YNHaS72f9r5Ac4ESWUbim1hNdm8mlVX7R485YY+RRYF6LjutHQNWi5VE/RR3uQSocjH03l7N63Fm64v092wIiSrNWFuHvd4tsRR0HcjZtlU3aIAzeR1waJz3mqy6o4WAADv+K6hwDmZEvfdHHPsm6JwCf1MP7zrV+terp4MKKkc8OboQfj4D5z8CmERhs3KZX3a7LDQt3eM2NLlsAhmbv0gw453XFWDgfyfLri9m3QtU8tbHVnkg9lUElqFBxMV35RiHKRwD7F3ZWgCvMktJZgp+CLPph4mYhkbxNDrYWEhPD0Fpszlf8pwUlTPVjlzCRsViMRKs95ArTX9JpPi+J4RbkDC3yH2n6rfZEyHjdJ7Wwb7ln38UwLCKCXDr01IwSXD+MlMLMQbn3n/3s/yOfawNUtn9c9xNgPMqJ/1PDtpaFzSpxwHTIZzQK80cO9+qZ/DpKsZiCw8vOYQDCLMme8fw7e+ciTeUO+D9Y+vcSr0s7vyDiEbrwc2/rYrO6qj6ce4k+q5cTMTzD2vtQDAY38aJq3KpEF8ybfvT8 uNArutXA oczxCmuABSgeWTfMUL2x1Ts6kHl3mAMZzO7qbOKamFc/vq4Trbm6CrsAggSgID+UPkxiulhTvydPzl84zAbyqtMYJ3G8BBupKcDDd7ywqW/wUfWUx1YEdOf+Oak9zmjR3wuwkCQRaRjvpxzLeL/1Jc/FnYuWjT+4tTnG2RCLnH0IJH2OZUsRou4H8KslC1UyNvrQ4qMaF/osHJwNeGvt8MFTLLg1IxTq8p/1vSu2NdKv0+DZXIOEiqZCoNRI2AIxnq588PNJ0x+jsYG69WgvLo42LKAJ6VffRj8YS+n+A+6dTIAEUF51MNLHKK2i58pymtoSstlm8o3xfqSMpoUHVR8Bo/4ymiiUOqeOuNOHp2l87XAL87BKHoSvsARrn+5MHjwg9FyKI7q2bu/rSKA2fR68xvDtFi/DZDG6SbHkT53fFRnU= 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: Remove SLOB from Kconfig and Makefile. Everything under #ifdef CONFIG_SLOB, and mm/slob.c is now dead code. Signed-off-by: Vlastimil Babka Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Acked-by: Lorenzo Stoakes Acked-by: Mike Rapoport (IBM) --- init/Kconfig | 2 +- kernel/configs/tiny.config | 1 - mm/Kconfig | 22 ---------------------- mm/Makefile | 2 -- 4 files changed, 1 insertion(+), 26 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index 1fb5f313d18f..72ac3f66bc27 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -973,7 +973,7 @@ config MEMCG config MEMCG_KMEM bool - depends on MEMCG && !SLOB + depends on MEMCG default y config BLK_CGROUP diff --git a/kernel/configs/tiny.config b/kernel/configs/tiny.config index c2f9c912df1c..144b2bd86b14 100644 --- a/kernel/configs/tiny.config +++ b/kernel/configs/tiny.config @@ -7,6 +7,5 @@ CONFIG_KERNEL_XZ=y # CONFIG_KERNEL_LZO is not set # CONFIG_KERNEL_LZ4 is not set # CONFIG_SLAB is not set -# CONFIG_SLOB_DEPRECATED is not set CONFIG_SLUB=y CONFIG_SLUB_TINY=y diff --git a/mm/Kconfig b/mm/Kconfig index 4751031f3f05..669399ab693c 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -238,30 +238,8 @@ config SLUB and has enhanced diagnostics. SLUB is the default choice for a slab allocator. -config SLOB_DEPRECATED - depends on EXPERT - bool "SLOB (Simple Allocator - DEPRECATED)" - depends on !PREEMPT_RT - help - Deprecated and scheduled for removal in a few cycles. SLUB - recommended as replacement. CONFIG_SLUB_TINY can be considered - on systems with 16MB or less RAM. - - If you need SLOB to stay, please contact linux-mm@kvack.org and - people listed in the SLAB ALLOCATOR section of MAINTAINERS file, - with your use case. - - SLOB replaces the stock allocator with a drastically simpler - allocator. SLOB is generally more space efficient but - does not perform as well on large systems. - endchoice -config SLOB - bool - default y - depends on SLOB_DEPRECATED - config SLUB_TINY bool "Configure SLUB for minimal memory footprint" depends on SLUB && EXPERT diff --git a/mm/Makefile b/mm/Makefile index 8e105e5b3e29..e347958fc6b2 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -22,7 +22,6 @@ KCSAN_INSTRUMENT_BARRIERS := y # flaky coverage that is not a function of syscall inputs. E.g. slab is out of # free pages, or a task is migrated between nodes. KCOV_INSTRUMENT_slab_common.o := n -KCOV_INSTRUMENT_slob.o := n KCOV_INSTRUMENT_slab.o := n KCOV_INSTRUMENT_slub.o := n KCOV_INSTRUMENT_page_alloc.o := n @@ -81,7 +80,6 @@ obj-$(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP) += hugetlb_vmemmap.o obj-$(CONFIG_NUMA) += mempolicy.o obj-$(CONFIG_SPARSEMEM) += sparse.o obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o -obj-$(CONFIG_SLOB) += slob.o obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o obj-$(CONFIG_KSM) += ksm.o obj-$(CONFIG_PAGE_POISONING) += page_poison.o