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…tats' into for-linus
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Pekka Enberg committed Dec 12, 2009
5 parents 053fe57 + 8e15b79 + ddbf2e8 + 74e2134 + 78eb00c commit 355d79c
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109 changes: 58 additions & 51 deletions Documentation/ABI/testing/sysfs-kernel-slab
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Original file line number Diff line number Diff line change
Expand Up @@ -45,8 +45,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The alloc_fastpath file is read-only and specifies how many
objects have been allocated using the fast path.
The alloc_fastpath file shows how many objects have been
allocated using the fast path. It can be written to clear the
current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/alloc_from_partial
Expand All @@ -55,9 +56,10 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The alloc_from_partial file is read-only and specifies how
many times a cpu slab has been full and it has been refilled
by using a slab from the list of partially used slabs.
The alloc_from_partial file shows how many times a cpu slab has
been full and it has been refilled by using a slab from the list
of partially used slabs. It can be written to clear the current
count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/alloc_refill
Expand All @@ -66,9 +68,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The alloc_refill file is read-only and specifies how many
times the per-cpu freelist was empty but there were objects
available as the result of remote cpu frees.
The alloc_refill file shows how many times the per-cpu freelist
was empty but there were objects available as the result of
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
Expand All @@ -77,8 +79,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The alloc_slab file is read-only and specifies how many times
a new slab had to be allocated from the page allocator.
The alloc_slab file is shows how many times a new slab had to
be allocated from the page allocator. It can be written to
clear the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/alloc_slowpath
Expand All @@ -87,9 +90,10 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The alloc_slowpath file is read-only and specifies how many
objects have been allocated using the slow path because of a
refill or allocation from a partial or new slab.
The alloc_slowpath file shows how many objects have been
allocated using the slow path because of a refill or
allocation from a partial or new slab. It can be written to
clear the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/cache_dma
Expand Down Expand Up @@ -117,10 +121,11 @@ KernelVersion: 2.6.31
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file cpuslab_flush is read-only and specifies how many
times a cache's cpu slabs have been flushed as the result of
destroying or shrinking a cache, a cpu going offline, or as
the result of forcing an allocation from a certain node.
The file cpuslab_flush shows how many times a cache's cpu slabs
have been flushed as the result of destroying or shrinking a
cache, a cpu going offline, or as the result of forcing an
allocation from a certain node. It can be written to clear the
current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/ctor
Expand All @@ -139,8 +144,8 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file deactivate_empty is read-only and specifies how many
times an empty cpu slab was deactivated.
The deactivate_empty file shows how many times an empty cpu slab
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
Expand All @@ -149,8 +154,8 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file deactivate_full is read-only and specifies how many
times a full cpu slab was deactivated.
The deactivate_full file shows how many times a full cpu slab
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
Expand All @@ -159,9 +164,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file deactivate_remote_frees is read-only and specifies how
many times a cpu slab has been deactivated and contained free
objects that were freed remotely.
The deactivate_remote_frees file shows how many times a cpu slab
has been deactivated and contained free objects that were freed
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
Expand All @@ -170,9 +175,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file deactivate_to_head is read-only and specifies how
many times a partial cpu slab was deactivated and added to the
head of its node's partial list.
The deactivate_to_head file shows how many times a partial cpu
slab was deactivated and added to the head of its node's partial
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
Expand All @@ -181,9 +186,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file deactivate_to_tail is read-only and specifies how
many times a partial cpu slab was deactivated and added to the
tail of its node's partial list.
The deactivate_to_tail file shows how many times a partial cpu
slab was deactivated and added to the tail of its node's partial
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
Expand All @@ -201,9 +206,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file free_add_partial is read-only and specifies how many
times an object has been freed in a full slab so that it had to
added to its node's partial list.
The free_add_partial file shows how many times an object has
been freed in a full slab so that it had to added to its node's
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
Expand All @@ -222,9 +227,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The free_fastpath file is read-only and specifies how many
objects have been freed using the fast path because it was an
object from the cpu slab.
The free_fastpath file shows how many objects have been freed
using the fast path because it was an object from the cpu slab.
It can be written to clear the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/free_frozen
Expand All @@ -233,9 +238,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The free_frozen file is read-only and specifies how many
objects have been freed to a frozen slab (i.e. a remote cpu
slab).
The free_frozen file shows how many objects have been freed to
a frozen slab (i.e. a remote cpu slab). It can be written to
clear the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/free_remove_partial
Expand All @@ -244,9 +249,10 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file free_remove_partial is read-only and specifies how
many times an object has been freed to a now-empty slab so
that it had to be removed from its node's partial list.
The free_remove_partial file shows how many times an object has
been freed to a now-empty slab so that it had to be removed from
its node's partial list. It can be written to clear the current
count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/free_slab
Expand All @@ -255,8 +261,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The free_slab file is read-only and specifies how many times an
empty slab has been freed back to the page allocator.
The free_slab file shows how many times an empty slab has been
freed back to the page allocator. It can be written to clear
the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/free_slowpath
Expand All @@ -265,9 +272,9 @@ KernelVersion: 2.6.25
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The free_slowpath file is read-only and specifies how many
objects have been freed using the slow path (i.e. to a full or
partial slab).
The free_slowpath file shows how many objects have been freed
using the slow path (i.e. to a full or partial slab). It can
be written to clear the current count.
Available when CONFIG_SLUB_STATS is enabled.

What: /sys/kernel/slab/cache/hwcache_align
Expand Down Expand Up @@ -346,10 +353,10 @@ KernelVersion: 2.6.26
Contact: Pekka Enberg <[email protected]>,
Christoph Lameter <[email protected]>
Description:
The file order_fallback is read-only and specifies how many
times an allocation of a new slab has not been possible at the
cache's order and instead fallen back to its minimum possible
order.
The order_fallback file shows how many times an allocation of a
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
Expand Down
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