diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-kernel-slab')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-slab | 122 |
1 files changed, 73 insertions, 49 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab index ed35833ad7f0..cd5fb8fa3ddf 100644 --- a/Documentation/ABI/testing/sysfs-kernel-slab +++ b/Documentation/ABI/testing/sysfs-kernel-slab @@ -10,7 +10,7 @@ Description: any cache it aliases, if any). Users: kernel memory tuning tools -What: /sys/kernel/slab/cache/aliases +What: /sys/kernel/slab/<cache>/aliases Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -19,7 +19,7 @@ Description: The aliases file is read-only and specifies how many caches have merged into this cache. -What: /sys/kernel/slab/cache/align +What: /sys/kernel/slab/<cache>/align Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -28,7 +28,7 @@ Description: The align file is read-only and specifies the cache's object alignment in bytes. -What: /sys/kernel/slab/cache/alloc_calls +What: /sys/kernel/slab/<cache>/alloc_calls Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -37,9 +37,9 @@ Description: The alloc_calls file is read-only and lists the kernel code locations from which allocations for this cache were performed. The alloc_calls file only contains information if debugging is - enabled for that cache (see Documentation/vm/slub.rst). + enabled for that cache (see Documentation/mm/slub.rst). -What: /sys/kernel/slab/cache/alloc_fastpath +What: /sys/kernel/slab/<cache>/alloc_fastpath Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -50,7 +50,7 @@ Description: current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/alloc_from_partial +What: /sys/kernel/slab/<cache>/alloc_from_partial Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -62,7 +62,7 @@ Description: count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/alloc_refill +What: /sys/kernel/slab/<cache>/alloc_refill Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -73,7 +73,7 @@ Description: remote cpu frees. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/alloc_slab +What: /sys/kernel/slab/<cache>/alloc_slab Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -84,7 +84,7 @@ Description: clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/alloc_slowpath +What: /sys/kernel/slab/<cache>/alloc_slowpath Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -96,7 +96,7 @@ Description: clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/cache_dma +What: /sys/kernel/slab/<cache>/cache_dma Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -106,7 +106,7 @@ Description: are from ZONE_DMA. Available when CONFIG_ZONE_DMA is enabled. -What: /sys/kernel/slab/cache/cpu_slabs +What: /sys/kernel/slab/<cache>/cpu_slabs Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -115,7 +115,7 @@ Description: The cpu_slabs file is read-only and displays how many cpu slabs are active and their NUMA locality. -What: /sys/kernel/slab/cache/cpuslab_flush +What: /sys/kernel/slab/<cache>/cpuslab_flush Date: April 2009 KernelVersion: 2.6.31 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -128,7 +128,7 @@ Description: current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/ctor +What: /sys/kernel/slab/<cache>/ctor Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -138,7 +138,7 @@ Description: constructor function, which is invoked for each object when a new slab is allocated. -What: /sys/kernel/slab/cache/deactivate_empty +What: /sys/kernel/slab/<cache>/deactivate_empty Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -148,7 +148,7 @@ Description: was deactivated. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/deactivate_full +What: /sys/kernel/slab/<cache>/deactivate_full Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -158,7 +158,7 @@ Description: was deactivated. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/deactivate_remote_frees +What: /sys/kernel/slab/<cache>/deactivate_remote_frees Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -169,7 +169,7 @@ Description: remotely. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/deactivate_to_head +What: /sys/kernel/slab/<cache>/deactivate_to_head Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -180,7 +180,7 @@ Description: list. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/deactivate_to_tail +What: /sys/kernel/slab/<cache>/deactivate_to_tail Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -191,7 +191,7 @@ Description: list. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/destroy_by_rcu +What: /sys/kernel/slab/<cache>/destroy_by_rcu Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -200,7 +200,7 @@ Description: The destroy_by_rcu file is read-only and specifies whether slabs (not objects) are freed by rcu. -What: /sys/kernel/slab/cache/free_add_partial +What: /sys/kernel/slab/<cache>/free_add_partial Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -211,7 +211,7 @@ Description: partial list. It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/free_calls +What: /sys/kernel/slab/<cache>/free_calls Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -219,9 +219,9 @@ Contact: Pekka Enberg <penberg@cs.helsinki.fi>, Description: The free_calls file is read-only and lists the locations of object frees if slab debugging is enabled (see - Documentation/vm/slub.rst). + Documentation/mm/slub.rst). -What: /sys/kernel/slab/cache/free_fastpath +What: /sys/kernel/slab/<cache>/free_fastpath Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -232,7 +232,7 @@ Description: It can be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/free_frozen +What: /sys/kernel/slab/<cache>/free_frozen Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -243,7 +243,7 @@ Description: clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/free_remove_partial +What: /sys/kernel/slab/<cache>/free_remove_partial Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -255,7 +255,7 @@ Description: count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/free_slab +What: /sys/kernel/slab/<cache>/free_slab Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -266,7 +266,7 @@ Description: the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/free_slowpath +What: /sys/kernel/slab/<cache>/free_slowpath Date: February 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -277,7 +277,7 @@ Description: be written to clear the current count. Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/hwcache_align +What: /sys/kernel/slab/<cache>/hwcache_align Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -286,7 +286,7 @@ Description: The hwcache_align file is read-only and specifies whether objects are aligned on cachelines. -What: /sys/kernel/slab/cache/min_partial +What: /sys/kernel/slab/<cache>/min_partial Date: February 2009 KernelVersion: 2.6.30 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -297,7 +297,7 @@ Description: allocating new slabs. Such slabs may be reclaimed by utilizing the shrink file. -What: /sys/kernel/slab/cache/object_size +What: /sys/kernel/slab/<cache>/object_size Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -306,7 +306,7 @@ Description: The object_size file is read-only and specifies the cache's object size. -What: /sys/kernel/slab/cache/objects +What: /sys/kernel/slab/<cache>/objects Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -315,7 +315,7 @@ Description: The objects file is read-only and displays how many objects are active and from which nodes they are from. -What: /sys/kernel/slab/cache/objects_partial +What: /sys/kernel/slab/<cache>/objects_partial Date: April 2008 KernelVersion: 2.6.26 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -325,7 +325,7 @@ Description: objects are on partial slabs and from which nodes they are from. -What: /sys/kernel/slab/cache/objs_per_slab +What: /sys/kernel/slab/<cache>/objs_per_slab Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -333,9 +333,9 @@ Contact: Pekka Enberg <penberg@cs.helsinki.fi>, Description: The file objs_per_slab is read-only and specifies how many objects may be allocated from a single slab of the order - specified in /sys/kernel/slab/cache/order. + specified in /sys/kernel/slab/<cache>/order. -What: /sys/kernel/slab/cache/order +What: /sys/kernel/slab/<cache>/order Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -346,12 +346,13 @@ Description: number of objects per slab. If a slab cannot be allocated because of fragmentation, SLUB will retry with the minimum order possible depending on its characteristics. + When debug_guardpage_minorder=N (N > 0) parameter is specified (see Documentation/admin-guide/kernel-parameters.rst), the minimum possible order is used and this sysfs entry can not be used to change the order at run time. -What: /sys/kernel/slab/cache/order_fallback +What: /sys/kernel/slab/<cache>/order_fallback Date: April 2008 KernelVersion: 2.6.26 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -361,9 +362,10 @@ Description: new slab has not been possible at the cache's order and instead fallen back to its minimum possible order. It can be written to clear the current count. + Available when CONFIG_SLUB_STATS is enabled. -What: /sys/kernel/slab/cache/partial +What: /sys/kernel/slab/<cache>/partial Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -372,7 +374,7 @@ Description: The partial file is read-only and displays how long many partial slabs there are and how long each node's list is. -What: /sys/kernel/slab/cache/poison +What: /sys/kernel/slab/<cache>/poison Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -381,7 +383,7 @@ Description: The poison file specifies whether objects should be poisoned when a new slab is allocated. -What: /sys/kernel/slab/cache/reclaim_account +What: /sys/kernel/slab/<cache>/reclaim_account Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -390,7 +392,7 @@ Description: The reclaim_account file specifies whether the cache's objects are reclaimable (and grouped by their mobility). -What: /sys/kernel/slab/cache/red_zone +What: /sys/kernel/slab/<cache>/red_zone Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -399,7 +401,7 @@ Description: The red_zone file specifies whether the cache's objects are red zoned. -What: /sys/kernel/slab/cache/remote_node_defrag_ratio +What: /sys/kernel/slab/<cache>/remote_node_defrag_ratio Date: January 2008 KernelVersion: 2.6.25 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -410,9 +412,10 @@ Description: slab from a remote node as opposed to allocating a new slab on the local node. This reduces the amount of wasted memory over the entire system but can be expensive. + Available when CONFIG_NUMA is enabled. -What: /sys/kernel/slab/cache/sanity_checks +What: /sys/kernel/slab/<cache>/sanity_checks Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -423,7 +426,7 @@ Description: checks. Caches that enable sanity_checks cannot be merged with caches that do not. -What: /sys/kernel/slab/cache/shrink +What: /sys/kernel/slab/<cache>/shrink Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -439,7 +442,7 @@ Description: adversely impact other running applications. So it should be used with care. -What: /sys/kernel/slab/cache/slab_size +What: /sys/kernel/slab/<cache>/slab_size Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -448,7 +451,7 @@ Description: The slab_size file is read-only and specifies the object size with metadata (debugging information and alignment) in bytes. -What: /sys/kernel/slab/cache/slabs +What: /sys/kernel/slab/<cache>/slabs Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -458,7 +461,7 @@ Description: there are (both cpu and partial) and from which nodes they are from. -What: /sys/kernel/slab/cache/store_user +What: /sys/kernel/slab/<cache>/store_user Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -467,7 +470,7 @@ Description: The store_user file specifies whether the location of allocation or free should be tracked for a cache. -What: /sys/kernel/slab/cache/total_objects +What: /sys/kernel/slab/<cache>/total_objects Date: April 2008 KernelVersion: 2.6.26 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -476,7 +479,7 @@ Description: The total_objects file is read-only and displays how many total objects a cache has and from which nodes they are from. -What: /sys/kernel/slab/cache/trace +What: /sys/kernel/slab/<cache>/trace Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -485,7 +488,7 @@ Description: The trace file specifies whether object allocations and frees should be traced. -What: /sys/kernel/slab/cache/validate +What: /sys/kernel/slab/<cache>/validate Date: May 2007 KernelVersion: 2.6.22 Contact: Pekka Enberg <penberg@cs.helsinki.fi>, @@ -493,3 +496,24 @@ Contact: Pekka Enberg <penberg@cs.helsinki.fi>, Description: Writing to the validate file causes SLUB to traverse all of its cache's objects and check the validity of metadata. + +What: /sys/kernel/slab/<cache>/usersize +Date: Jun 2017 +Contact: David Windsor <dave@nullcore.net> +Description: + The usersize file is read-only and contains the usercopy + region size. + +What: /sys/kernel/slab/<cache>/slabs_cpu_partial +Date: Aug 2011 +Contact: Christoph Lameter <cl@linux.com> +Description: + This read-only file shows the number of partialli allocated + frozen slabs. + +What: /sys/kernel/slab/<cache>/cpu_partial +Date: Aug 2011 +Contact: Christoph Lameter <cl@linux.com> +Description: + This read-only file shows the number of per cpu partial + pages to keep around. |