diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2023-05-23 09:06:34 +0200 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2023-05-26 19:01:47 +0200 |
| commit | eb07c4f39c3e858a7d0cc4bb15b8a304f83f0497 (patch) | |
| tree | ee35d3461ea1f0a0b6084e39a28c015fff5276d1 /mm/Kconfig | |
| parent | 44c026a73be8038f03dbdeef028b642880cf1511 (diff) | |
mm/slab: rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATED
As discussed at LSF/MM [1] [2] and with no objections raised there,
deprecate the SLAB allocator. Rename the user-visible option so that
users with CONFIG_SLAB=y get a new prompt with explanation during make
oldconfig, while make olddefconfig will just switch to SLUB.
In all defconfigs with CONFIG_SLAB=y remove the line so those also
switch to SLUB. Regressions due to the switch should be reported to
linux-mm and slab maintainers.
[1] https://lore.kernel.org/all/4b9fc9c6-b48c-198f-5f80-811a44737e5f@suse.cz/
[2] https://lwn.net/Articles/932201/
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Acked-by: Helge Deller <deller@gmx.de> # parisc
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 7672a22647b4..b537c4436d18 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -218,11 +218,18 @@ choice help This option allows to select a slab allocator. -config SLAB - bool "SLAB" +config SLAB_DEPRECATED + bool "SLAB (DEPRECATED)" depends on !PREEMPT_RT select HAVE_HARDENED_USERCOPY_ALLOCATOR help + Deprecated and scheduled for removal in a few cycles. Replaced by + SLUB. + + If you cannot migrate to SLUB, please contact linux-mm@kvack.org + and the people listed in the SLAB ALLOCATOR section of MAINTAINERS + file, explaining why. + The regular slab allocator that is established and known to work well in all environments. It organizes cache hot objects in per cpu and per node queues. @@ -240,6 +247,11 @@ config SLUB endchoice +config SLAB + bool + default y + depends on SLAB_DEPRECATED + config SLUB_TINY bool "Configure SLUB for minimal memory footprint" depends on SLUB && EXPERT |