diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 7672a22647b4..09130434e30d 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -46,6 +46,22 @@ config ZSWAP_DEFAULT_ON The selection made here can be overridden by using the kernel command line 'zswap.enabled=' option. +config ZSWAP_EXCLUSIVE_LOADS_DEFAULT_ON + bool "Invalidate zswap entries when pages are loaded" + depends on ZSWAP + help + If selected, exclusive loads for zswap will be enabled at boot, + otherwise it will be disabled. + + If exclusive loads are enabled, when a page is loaded from zswap, + the zswap entry is invalidated at once, as opposed to leaving it + in zswap until the swap entry is freed. + + This avoids having two copies of the same page in memory + (compressed and uncompressed) after faulting in a page from zswap. + The cost is that if the page was never dirtied and needs to be + swapped out again, it will be re-compressed. + choice prompt "Default compressor" depends on ZSWAP @@ -218,18 +234,23 @@ 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. config SLUB bool "SLUB (Unqueued Allocator)" - select HAVE_HARDENED_USERCOPY_ALLOCATOR help SLUB is a slab allocator that minimizes cache line usage instead of managing queues of cached objects (SLAB approach). @@ -240,6 +261,11 @@ 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 @@ -1206,6 +1232,10 @@ config PER_VMA_LOCK This feature allows locking each virtual memory area separately when handling page faults instead of taking mmap_lock. +config LOCK_MM_AND_FIND_VMA + bool + depends on !STACK_GROWSUP + source "mm/damon/Kconfig" endmenu |