| Kconfig (b3bbcc5d1da1b654091dad15980b3d58fdae0fc6) | Kconfig (ec1c86b25f4bdd9dce6436c0539d2a6ae676e1c4) |
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| 1# SPDX-License-Identifier: GPL-2.0-only 2 3menu "Memory Management options" 4 5# 6# For some reason microblaze and nios2 hard code SWAP=n. Hopefully we can 7# add proper SWAP support to them, in which case this can be remove. 8# --- 9 unchanged lines hidden (view full) --- 18 default y 19 help 20 This option allows you to choose whether you want to have support 21 for so called swap devices or swap files in your kernel that are 22 used to provide more virtual memory than the actual RAM present 23 in your computer. If unsure say Y. 24 25config ZSWAP | 1# SPDX-License-Identifier: GPL-2.0-only 2 3menu "Memory Management options" 4 5# 6# For some reason microblaze and nios2 hard code SWAP=n. Hopefully we can 7# add proper SWAP support to them, in which case this can be remove. 8# --- 9 unchanged lines hidden (view full) --- 18 default y 19 help 20 This option allows you to choose whether you want to have support 21 for so called swap devices or swap files in your kernel that are 22 used to provide more virtual memory than the actual RAM present 23 in your computer. If unsure say Y. 24 25config ZSWAP |
| 26 bool "Compressed cache for swap pages (EXPERIMENTAL)" | 26 bool "Compressed cache for swap pages" |
| 27 depends on SWAP 28 select FRONTSWAP 29 select CRYPTO 30 select ZPOOL 31 help 32 A lightweight compressed cache for swap pages. It takes 33 pages that are in the process of being swapped out and attempts to 34 compress them into a dynamically allocated RAM-based memory pool. 35 This can result in a significant I/O reduction on swap device and, 36 in the case where decompressing from RAM is faster than swap device 37 reads, can also improve workload performance. 38 | 27 depends on SWAP 28 select FRONTSWAP 29 select CRYPTO 30 select ZPOOL 31 help 32 A lightweight compressed cache for swap pages. It takes 33 pages that are in the process of being swapped out and attempts to 34 compress them into a dynamically allocated RAM-based memory pool. 35 This can result in a significant I/O reduction on swap device and, 36 in the case where decompressing from RAM is faster than swap device 37 reads, can also improve workload performance. 38 |
| 39 This is marked experimental because it is a new feature (as of 40 v3.11) that interacts heavily with memory reclaim. While these 41 interactions don't cause any known issues on simple memory setups, 42 they have not be fully explored on the large set of potential 43 configurations and workloads that exist. 44 | |
| 45config ZSWAP_DEFAULT_ON 46 bool "Enable the compressed cache for swap pages by default" 47 depends on ZSWAP 48 help 49 If selected, the compressed cache for swap pages will be enabled 50 at boot, otherwise it will be disabled. 51 52 The selection made here can be overridden by using the kernel --- 1066 unchanged lines hidden (view full) --- 1119 depends on HAVE_ARCH_USERFAULTFD_WP 1120 select PTE_MARKER 1121 1122 help 1123 Allows to create marker PTEs for userfaultfd write protection 1124 purposes. It is required to enable userfaultfd write protection on 1125 file-backed memory types like shmem and hugetlbfs. 1126 | 39config ZSWAP_DEFAULT_ON 40 bool "Enable the compressed cache for swap pages by default" 41 depends on ZSWAP 42 help 43 If selected, the compressed cache for swap pages will be enabled 44 at boot, otherwise it will be disabled. 45 46 The selection made here can be overridden by using the kernel --- 1066 unchanged lines hidden (view full) --- 1113 depends on HAVE_ARCH_USERFAULTFD_WP 1114 select PTE_MARKER 1115 1116 help 1117 Allows to create marker PTEs for userfaultfd write protection 1118 purposes. It is required to enable userfaultfd write protection on 1119 file-backed memory types like shmem and hugetlbfs. 1120 |
| 1121config LRU_GEN 1122 bool "Multi-Gen LRU" 1123 depends on MMU 1124 # make sure folio->flags has enough spare bits 1125 depends on 64BIT || !SPARSEMEM || SPARSEMEM_VMEMMAP 1126 help 1127 A high performance LRU implementation to overcommit memory. 1128 |
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| 1127source "mm/damon/Kconfig" 1128 1129endmenu | 1129source "mm/damon/Kconfig" 1130 1131endmenu |