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mm/slob: remove CONFIG_SLOB

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Remove SLOB from Kconfig and Makefile. Everything under #ifdef
CONFIG_SLOB, and mm/slob.c is now dead code.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Acked-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
This commit is contained in:
Vlastimil Babka 2023-02-27 17:46:13 +01:00
parent eeac8ede17
commit c9929f0e34
4 changed files with 1 additions and 26 deletions
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2
init/Kconfig
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@ -973,7 +973,7 @@ config MEMCG
config MEMCG_KMEM config MEMCG_KMEM
bool bool
depends on MEMCG && !SLOB depends on MEMCG
default y default y
config BLK_CGROUP config BLK_CGROUP

1
kernel/configs/tiny.config
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@ -7,6 +7,5 @@ CONFIG_KERNEL_XZ=y
# CONFIG_KERNEL_LZO is not set # CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set # CONFIG_KERNEL_LZ4 is not set
# CONFIG_SLAB is not set # CONFIG_SLAB is not set
# CONFIG_SLOB_DEPRECATED is not set
CONFIG_SLUB=y CONFIG_SLUB=y
CONFIG_SLUB_TINY=y CONFIG_SLUB_TINY=y

22
mm/Kconfig
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@ -238,30 +238,8 @@ config SLUB
and has enhanced diagnostics. SLUB is the default choice for and has enhanced diagnostics. SLUB is the default choice for
a slab allocator. 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 endchoice
config SLOB
bool
default y
depends on SLOB_DEPRECATED
config SLUB_TINY config SLUB_TINY
bool "Configure SLUB for minimal memory footprint" bool "Configure SLUB for minimal memory footprint"
depends on SLUB && EXPERT depends on SLUB && EXPERT

2
mm/Makefile
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@ -22,7 +22,6 @@ KCSAN_INSTRUMENT_BARRIERS := y
# flaky coverage that is not a function of syscall inputs. E.g. slab is out of # 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. # free pages, or a task is migrated between nodes.
KCOV_INSTRUMENT_slab_common.o := n KCOV_INSTRUMENT_slab_common.o := n
KCOV_INSTRUMENT_slob.o := n
KCOV_INSTRUMENT_slab.o := n KCOV_INSTRUMENT_slab.o := n
KCOV_INSTRUMENT_slub.o := n KCOV_INSTRUMENT_slub.o := n
KCOV_INSTRUMENT_page_alloc.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-$(CONFIG_NUMA) += mempolicy.o
obj-$(CONFIG_SPARSEMEM) += sparse.o obj-$(CONFIG_SPARSEMEM) += sparse.o
obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o
obj-$(CONFIG_SLOB) += slob.o
obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
obj-$(CONFIG_KSM) += ksm.o obj-$(CONFIG_KSM) += ksm.o
obj-$(CONFIG_PAGE_POISONING) += page_poison.o obj-$(CONFIG_PAGE_POISONING) += page_poison.o