From: Yu Zhao <yuzhao@google.com> To: linux-mm@kvack.org Cc: Alex Shi <alexs@kernel.org>, Andi Kleen <ak@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Benjamin Manes <ben.manes@gmail.com>, Dave Chinner <david@fromorbit.com>, Dave Hansen <dave.hansen@linux.intel.com>, Hillf Danton <hdanton@sina.com>, Jens Axboe <axboe@kernel.dk>, Johannes Weiner <hannes@cmpxchg.org>, Jonathan Corbet <corbet@lwn.net>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Matthew Wilcox <willy@infradead.org>, Mel Gorman <mgorman@suse.de>, Miaohe Lin <linmiaohe@huawei.com>, Michael Larabel <michael@michaellarabel.com>, Michal Hocko <mhocko@suse.com>, Michel Lespinasse <michel@lespinasse.org>, Rik van Riel <riel@surriel.com>, Roman Gushchin <guro@fb.com>, Rong Chen <rong.a.chen@intel.com>, SeongJae Park <sjpark@amazon.de>, Tim Chen <tim.c.chen@linux.intel.com>, Vlastimil Babka <vbabka@suse.cz>, Yang Shi <shy828301@gmail.com>, Ying Huang <ying.huang@intel.com>, Zi Yan <ziy@nvidia.com>, linux-kernel@vger.kernel.org, lkp@lists.01.org, page-reclaim@google.com, Yu Zhao <yuzhao@google.com> Subject: [PATCH v2 15/16] mm: multigenerational lru: Kconfig Date: Tue, 13 Apr 2021 00:56:32 -0600 [thread overview] Message-ID: <20210413065633.2782273-16-yuzhao@google.com> (raw) In-Reply-To: <20210413065633.2782273-1-yuzhao@google.com> Add configuration options for the multigenerational lru. Signed-off-by: Yu Zhao <yuzhao@google.com> --- mm/Kconfig | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index 24c045b24b95..0be1c6c90cc0 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -872,4 +872,59 @@ config MAPPING_DIRTY_HELPERS config KMAP_LOCAL bool +config LRU_GEN + bool "Multigenerational LRU" + depends on MMU + help + A high performance LRU implementation to heavily overcommit workloads + that are not IO bound. See Documentation/vm/multigen_lru.rst for + details. + + Warning: do not enable this option unless you plan to use it because + it introduces a small per-process and per-memcg and per-node memory + overhead. + +config NR_LRU_GENS + int "Max number of generations" + depends on LRU_GEN + range 4 31 + default 7 + help + This will use order_base_2(N+1) spare bits from page flags. + + Warning: do not use numbers larger than necessary because each + generation introduces a small per-node and per-memcg memory overhead. + +config TIERS_PER_GEN + int "Number of tiers per generation" + depends on LRU_GEN + range 2 5 + default 4 + help + This will use N-2 spare bits from page flags. + + Higher values generally offer better protection to active pages under + heavy buffered I/O workloads. + +config LRU_GEN_ENABLED + bool "Turn on by default" + depends on LRU_GEN + help + The default value of /sys/kernel/mm/lru_gen/enabled is 0. This option + changes it to 1. + + Warning: the default value is the fast path. See + Documentation/static-keys.txt for details. + +config LRU_GEN_STATS + bool "Full stats for debugging" + depends on LRU_GEN + help + This option keeps full stats for each generation, which can be read + from /sys/kernel/debug/lru_gen_full. + + Warning: do not enable this option unless you plan to use it because + it introduces an additional small per-process and per-memcg and + per-node memory overhead. + endmenu -- 2.31.1.295.g9ea45b61b8-goog
WARNING: multiple messages have this Message-ID (diff)
From: Yu Zhao <yuzhao@google.com> To: lkp@lists.01.org Subject: [PATCH v2 15/16] mm: multigenerational lru: Kconfig Date: Tue, 13 Apr 2021 00:56:32 -0600 [thread overview] Message-ID: <20210413065633.2782273-16-yuzhao@google.com> (raw) In-Reply-To: <20210413065633.2782273-1-yuzhao@google.com> [-- Attachment #1: Type: text/plain, Size: 2147 bytes --] Add configuration options for the multigenerational lru. Signed-off-by: Yu Zhao <yuzhao@google.com> --- mm/Kconfig | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index 24c045b24b95..0be1c6c90cc0 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -872,4 +872,59 @@ config MAPPING_DIRTY_HELPERS config KMAP_LOCAL bool +config LRU_GEN + bool "Multigenerational LRU" + depends on MMU + help + A high performance LRU implementation to heavily overcommit workloads + that are not IO bound. See Documentation/vm/multigen_lru.rst for + details. + + Warning: do not enable this option unless you plan to use it because + it introduces a small per-process and per-memcg and per-node memory + overhead. + +config NR_LRU_GENS + int "Max number of generations" + depends on LRU_GEN + range 4 31 + default 7 + help + This will use order_base_2(N+1) spare bits from page flags. + + Warning: do not use numbers larger than necessary because each + generation introduces a small per-node and per-memcg memory overhead. + +config TIERS_PER_GEN + int "Number of tiers per generation" + depends on LRU_GEN + range 2 5 + default 4 + help + This will use N-2 spare bits from page flags. + + Higher values generally offer better protection to active pages under + heavy buffered I/O workloads. + +config LRU_GEN_ENABLED + bool "Turn on by default" + depends on LRU_GEN + help + The default value of /sys/kernel/mm/lru_gen/enabled is 0. This option + changes it to 1. + + Warning: the default value is the fast path. See + Documentation/static-keys.txt for details. + +config LRU_GEN_STATS + bool "Full stats for debugging" + depends on LRU_GEN + help + This option keeps full stats for each generation, which can be read + from /sys/kernel/debug/lru_gen_full. + + Warning: do not enable this option unless you plan to use it because + it introduces an additional small per-process and per-memcg and + per-node memory overhead. + endmenu -- 2.31.1.295.g9ea45b61b8-goog
next prev parent reply other threads:[~2021-04-13 6:57 UTC|newest] Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-13 6:56 [PATCH v2 00/16] Multigenerational LRU Framework Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 01/16] include/linux/memcontrol.h: do not warn in page_memcg_rcu() if !CONFIG_MEMCG Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 02/16] include/linux/nodemask.h: define next_memory_node() if !CONFIG_NUMA Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 03/16] include/linux/huge_mm.h: define is_huge_zero_pmd() if !CONFIG_TRANSPARENT_HUGEPAGE Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 04/16] include/linux/cgroup.h: export cgroup_mutex Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 05/16] mm/swap.c: export activate_page() Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 06/16] mm, x86: support the access bit on non-leaf PMD entries Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 07/16] mm/vmscan.c: refactor shrink_node() Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 08/16] mm: multigenerational lru: groundwork Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 09/16] mm: multigenerational lru: activation Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 10/16] mm: multigenerational lru: mm_struct list Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-14 14:36 ` Matthew Wilcox 2021-04-14 14:36 ` Matthew Wilcox 2021-04-13 6:56 ` [PATCH v2 11/16] mm: multigenerational lru: aging Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 12/16] mm: multigenerational lru: eviction Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 13/16] mm: multigenerational lru: page reclaim Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` [PATCH v2 14/16] mm: multigenerational lru: user interface Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 22:39 ` kernel test robot 2021-04-13 22:39 ` kernel test robot 2021-04-13 6:56 ` Yu Zhao [this message] 2021-04-13 6:56 ` [PATCH v2 15/16] mm: multigenerational lru: Kconfig Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 16:19 ` kernel test robot 2021-04-13 16:19 ` kernel test robot 2021-04-14 4:54 ` kernel test robot 2021-04-14 4:54 ` kernel test robot 2021-04-13 6:56 ` [PATCH v2 16/16] mm: multigenerational lru: documentation Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 6:56 ` Yu Zhao 2021-04-13 7:51 ` [PATCH v2 00/16] Multigenerational LRU Framework SeongJae Park 2021-04-13 7:51 ` SeongJae Park 2021-04-13 16:13 ` Jens Axboe 2021-04-13 16:13 ` Jens Axboe 2021-04-13 16:42 ` SeongJae Park 2021-04-13 16:42 ` SeongJae Park 2021-04-13 23:14 ` Dave Chinner 2021-04-13 23:14 ` Dave Chinner 2021-04-14 2:29 ` Rik van Riel 2021-04-14 2:29 ` Rik van Riel 2021-04-14 2:29 ` Rik van Riel 2021-04-14 4:13 ` Yu Zhao 2021-04-14 4:13 ` Yu Zhao 2021-04-14 6:15 ` Huang, Ying 2021-04-14 6:15 ` Huang, Ying 2021-04-14 6:15 ` Huang, Ying 2021-04-14 7:58 ` Yu Zhao 2021-04-14 7:58 ` Yu Zhao 2021-04-14 7:58 ` Yu Zhao 2021-04-14 8:27 ` Huang, Ying 2021-04-14 8:27 ` Huang, Ying 2021-04-14 8:27 ` Huang, Ying 2021-04-14 13:51 ` Rik van Riel 2021-04-14 13:51 ` Rik van Riel 2021-04-14 13:51 ` Rik van Riel 2021-04-14 15:56 ` Andi Kleen 2021-04-14 15:56 ` Andi Kleen 2021-04-14 15:58 ` [page-reclaim] " Shakeel Butt 2021-04-14 15:58 ` Shakeel Butt 2021-04-14 15:58 ` Shakeel Butt 2021-04-14 18:45 ` Yu Zhao 2021-04-14 18:45 ` Yu Zhao 2021-04-14 18:45 ` Yu Zhao 2021-04-14 15:51 ` Andi Kleen 2021-04-14 15:51 ` Andi Kleen 2021-04-14 15:58 ` Rik van Riel 2021-04-14 15:58 ` Rik van Riel 2021-04-14 15:58 ` Rik van Riel 2021-04-14 19:14 ` Yu Zhao 2021-04-14 19:14 ` Yu Zhao 2021-04-14 19:14 ` Yu Zhao 2021-04-14 19:41 ` Rik van Riel 2021-04-14 19:41 ` Rik van Riel 2021-04-14 19:41 ` Rik van Riel 2021-04-14 20:08 ` Yu Zhao 2021-04-14 20:08 ` Yu Zhao 2021-04-14 20:08 ` Yu Zhao 2021-04-14 19:04 ` Yu Zhao 2021-04-14 19:04 ` Yu Zhao 2021-04-14 19:04 ` Yu Zhao 2021-04-15 3:00 ` Andi Kleen 2021-04-15 3:00 ` Andi Kleen 2021-04-15 7:13 ` Yu Zhao 2021-04-15 7:13 ` Yu Zhao 2021-04-15 7:13 ` Yu Zhao 2021-04-15 8:19 ` Huang, Ying 2021-04-15 8:19 ` Huang, Ying 2021-04-15 8:19 ` Huang, Ying 2021-04-15 9:57 ` Michel Lespinasse 2021-04-18 6:48 ` Michel Lespinasse 2021-04-24 2:33 ` Yu Zhao 2021-04-24 2:33 ` Yu Zhao 2021-04-24 2:33 ` Yu Zhao 2021-04-24 3:30 ` Andi Kleen 2021-04-24 3:30 ` Andi Kleen 2021-04-24 4:16 ` Yu Zhao 2021-04-24 4:16 ` Yu Zhao 2021-04-24 4:16 ` Yu Zhao 2021-04-14 3:40 ` Yu Zhao 2021-04-14 3:40 ` Yu Zhao 2021-04-14 3:40 ` Yu Zhao 2021-04-14 4:50 ` Dave Chinner 2021-04-14 4:50 ` Dave Chinner 2021-04-14 7:16 ` Yu Zhao 2021-04-14 7:16 ` Yu Zhao 2021-04-14 7:16 ` Yu Zhao 2021-04-14 10:00 ` Yu Zhao 2021-04-14 10:00 ` Yu Zhao 2021-04-15 1:36 ` Dave Chinner 2021-04-15 1:36 ` Dave Chinner 2021-04-24 21:21 ` Yu Zhao 2021-04-24 21:21 ` Yu Zhao 2021-04-24 21:21 ` Yu Zhao 2021-04-14 14:43 ` Jens Axboe 2021-04-14 14:43 ` Jens Axboe 2021-04-14 19:42 ` Yu Zhao 2021-04-14 19:42 ` Yu Zhao 2021-04-14 19:42 ` Yu Zhao 2021-04-15 1:21 ` Dave Chinner 2021-04-15 1:21 ` Dave Chinner 2021-04-14 17:43 ` Johannes Weiner 2021-04-14 17:43 ` Johannes Weiner 2021-04-27 10:35 ` Yu Zhao 2021-04-27 10:35 ` Yu Zhao 2021-04-27 10:35 ` Yu Zhao 2021-04-29 23:46 ` Konstantin Kharlamov 2021-04-29 23:46 ` Konstantin Kharlamov 2021-04-29 23:46 ` Konstantin Kharlamov 2021-04-30 6:37 ` Konstantin Kharlamov 2021-04-30 6:37 ` Konstantin Kharlamov 2021-04-30 6:37 ` Konstantin Kharlamov 2021-04-30 19:31 ` Yu Zhao 2021-04-30 19:31 ` Yu Zhao 2021-04-30 19:31 ` Yu Zhao
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