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authorVlastimil Babka <vbabka@suse.cz>2022-11-14 18:13:45 +0100
committerVlastimil Babka <vbabka@suse.cz>2022-11-27 23:38:02 +0100
commite240e53ae0abb0896e0f399bdfef41c69cec3123 (patch)
tree5bfa40d95d36a7a9066ed8e78e1b56988c64cb05 /lib/Kconfig.kasan
parentmm, slab: ignore hardened usercopy parameters when disabled (diff)
downloadlinux-e240e53ae0abb0896e0f399bdfef41c69cec3123.tar.xz
linux-e240e53ae0abb0896e0f399bdfef41c69cec3123.zip
mm, slub: add CONFIG_SLUB_TINY
For tiny systems that have used SLOB until now, SLUB might be impractical due to its higher memory usage. To help with that, introduce an option CONFIG_SLUB_TINY that modifies SLUB to use less memory. This is done by sacrificing scalability, security and debugging features, therefore not recommended for any system with more than 16MB RAM. This commit introduces the option and uses it to set other related options in a way that reduces memory usage. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Christoph Lameter <cl@linux.com>
Diffstat (limited to 'lib/Kconfig.kasan')
-rw-r--r--lib/Kconfig.kasan2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index ca09b1cf8ee9..836f70393e22 100644
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -37,7 +37,7 @@ menuconfig KASAN
(HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS)) && \
CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \
HAVE_ARCH_KASAN_HW_TAGS
- depends on (SLUB && SYSFS) || (SLAB && !DEBUG_SLAB)
+ depends on (SLUB && SYSFS && !SLUB_TINY) || (SLAB && !DEBUG_SLAB)
select STACKDEPOT_ALWAYS_INIT
help
Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety