ABI: sysfs-kernel-slab: use a wildcard for the cache name

the "cache" part of the description is actually a wildcard,
as, in practice, this will use per-subsystem names:

    /sys/kernel/slab/Acpi-Namespace/align
    /sys/kernel/slab/Acpi-Operand/align
    /sys/kernel/slab/Acpi-Parse/align
...
    /sys/kernel/slab/zswap_entry/align

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/64095cc0a38d0f675ab798d4f04d8631674b59f7.1631782432.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab
index c9f12ba..77e5840 100644 (file)
--- 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>,
@@ -39,7 +39,7 @@ Description:
                The alloc_calls file only contains information if debugging is
                enabled for that cache (see Documentation/vm/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>,
@@ -221,7 +221,7 @@ Description:
                object frees if slab debugging is enabled (see
                Documentation/vm/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>,
@@ -352,7 +352,7 @@ Description:
                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>,
@@ -365,7 +365,7 @@ Description:
 
                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>,
@@ -374,7 +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>,
@@ -383,7 +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>,
@@ -392,7 +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>,
@@ -401,7 +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>,
@@ -415,7 +415,7 @@ Description:
 
                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>,
@@ -426,7 +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>,
@@ -442,7 +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>,
@@ -451,7 +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>,
@@ -461,7 +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>,
@@ -470,7 +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>,
@@ -479,7 +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>,
@@ -488,7 +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>,