diff options
Diffstat (limited to 'Documentation/ABI')
-rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-slab | 109 |
1 files changed, 58 insertions, 51 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab index 6dcf75e594fb..8b093f8222d3 100644 --- a/Documentation/ABI/testing/sysfs-kernel-slab +++ b/Documentation/ABI/testing/sysfs-kernel-slab | |||
@@ -45,8 +45,9 @@ KernelVersion: 2.6.25 | |||
45 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 45 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
46 | Christoph Lameter <cl@linux-foundation.org> | 46 | Christoph Lameter <cl@linux-foundation.org> |
47 | Description: | 47 | Description: |
48 | The alloc_fastpath file is read-only and specifies how many | 48 | The alloc_fastpath file shows how many objects have been |
49 | objects have been allocated using the fast path. | 49 | allocated using the fast path. It can be written to clear the |
50 | current count. | ||
50 | Available when CONFIG_SLUB_STATS is enabled. | 51 | Available when CONFIG_SLUB_STATS is enabled. |
51 | 52 | ||
52 | What: /sys/kernel/slab/cache/alloc_from_partial | 53 | What: /sys/kernel/slab/cache/alloc_from_partial |
@@ -55,9 +56,10 @@ KernelVersion: 2.6.25 | |||
55 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 56 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
56 | Christoph Lameter <cl@linux-foundation.org> | 57 | Christoph Lameter <cl@linux-foundation.org> |
57 | Description: | 58 | Description: |
58 | The alloc_from_partial file is read-only and specifies how | 59 | The alloc_from_partial file shows how many times a cpu slab has |
59 | many times a cpu slab has been full and it has been refilled | 60 | been full and it has been refilled by using a slab from the list |
60 | by using a slab from the list of partially used slabs. | 61 | of partially used slabs. It can be written to clear the current |
62 | count. | ||
61 | Available when CONFIG_SLUB_STATS is enabled. | 63 | Available when CONFIG_SLUB_STATS is enabled. |
62 | 64 | ||
63 | What: /sys/kernel/slab/cache/alloc_refill | 65 | What: /sys/kernel/slab/cache/alloc_refill |
@@ -66,9 +68,9 @@ KernelVersion: 2.6.25 | |||
66 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 68 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
67 | Christoph Lameter <cl@linux-foundation.org> | 69 | Christoph Lameter <cl@linux-foundation.org> |
68 | Description: | 70 | Description: |
69 | The alloc_refill file is read-only and specifies how many | 71 | The alloc_refill file shows how many times the per-cpu freelist |
70 | times the per-cpu freelist was empty but there were objects | 72 | was empty but there were objects available as the result of |
71 | available as the result of remote cpu frees. | 73 | remote cpu frees. It can be written to clear the current count. |
72 | Available when CONFIG_SLUB_STATS is enabled. | 74 | Available when CONFIG_SLUB_STATS is enabled. |
73 | 75 | ||
74 | What: /sys/kernel/slab/cache/alloc_slab | 76 | What: /sys/kernel/slab/cache/alloc_slab |
@@ -77,8 +79,9 @@ KernelVersion: 2.6.25 | |||
77 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 79 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
78 | Christoph Lameter <cl@linux-foundation.org> | 80 | Christoph Lameter <cl@linux-foundation.org> |
79 | Description: | 81 | Description: |
80 | The alloc_slab file is read-only and specifies how many times | 82 | The alloc_slab file is shows how many times a new slab had to |
81 | a new slab had to be allocated from the page allocator. | 83 | be allocated from the page allocator. It can be written to |
84 | clear the current count. | ||
82 | Available when CONFIG_SLUB_STATS is enabled. | 85 | Available when CONFIG_SLUB_STATS is enabled. |
83 | 86 | ||
84 | What: /sys/kernel/slab/cache/alloc_slowpath | 87 | What: /sys/kernel/slab/cache/alloc_slowpath |
@@ -87,9 +90,10 @@ KernelVersion: 2.6.25 | |||
87 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 90 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
88 | Christoph Lameter <cl@linux-foundation.org> | 91 | Christoph Lameter <cl@linux-foundation.org> |
89 | Description: | 92 | Description: |
90 | The alloc_slowpath file is read-only and specifies how many | 93 | The alloc_slowpath file shows how many objects have been |
91 | objects have been allocated using the slow path because of a | 94 | allocated using the slow path because of a refill or |
92 | refill or allocation from a partial or new slab. | 95 | allocation from a partial or new slab. It can be written to |
96 | clear the current count. | ||
93 | Available when CONFIG_SLUB_STATS is enabled. | 97 | Available when CONFIG_SLUB_STATS is enabled. |
94 | 98 | ||
95 | What: /sys/kernel/slab/cache/cache_dma | 99 | What: /sys/kernel/slab/cache/cache_dma |
@@ -117,10 +121,11 @@ KernelVersion: 2.6.31 | |||
117 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 121 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
118 | Christoph Lameter <cl@linux-foundation.org> | 122 | Christoph Lameter <cl@linux-foundation.org> |
119 | Description: | 123 | Description: |
120 | The file cpuslab_flush is read-only and specifies how many | 124 | The file cpuslab_flush shows how many times a cache's cpu slabs |
121 | times a cache's cpu slabs have been flushed as the result of | 125 | have been flushed as the result of destroying or shrinking a |
122 | destroying or shrinking a cache, a cpu going offline, or as | 126 | cache, a cpu going offline, or as the result of forcing an |
123 | the result of forcing an allocation from a certain node. | 127 | allocation from a certain node. It can be written to clear the |
128 | current count. | ||
124 | Available when CONFIG_SLUB_STATS is enabled. | 129 | Available when CONFIG_SLUB_STATS is enabled. |
125 | 130 | ||
126 | What: /sys/kernel/slab/cache/ctor | 131 | What: /sys/kernel/slab/cache/ctor |
@@ -139,8 +144,8 @@ KernelVersion: 2.6.25 | |||
139 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 144 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
140 | Christoph Lameter <cl@linux-foundation.org> | 145 | Christoph Lameter <cl@linux-foundation.org> |
141 | Description: | 146 | Description: |
142 | The file deactivate_empty is read-only and specifies how many | 147 | The deactivate_empty file shows how many times an empty cpu slab |
143 | times an empty cpu slab was deactivated. | 148 | was deactivated. It can be written to clear the current count. |
144 | Available when CONFIG_SLUB_STATS is enabled. | 149 | Available when CONFIG_SLUB_STATS is enabled. |
145 | 150 | ||
146 | What: /sys/kernel/slab/cache/deactivate_full | 151 | What: /sys/kernel/slab/cache/deactivate_full |
@@ -149,8 +154,8 @@ KernelVersion: 2.6.25 | |||
149 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 154 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
150 | Christoph Lameter <cl@linux-foundation.org> | 155 | Christoph Lameter <cl@linux-foundation.org> |
151 | Description: | 156 | Description: |
152 | The file deactivate_full is read-only and specifies how many | 157 | The deactivate_full file shows how many times a full cpu slab |
153 | times a full cpu slab was deactivated. | 158 | was deactivated. It can be written to clear the current count. |
154 | Available when CONFIG_SLUB_STATS is enabled. | 159 | Available when CONFIG_SLUB_STATS is enabled. |
155 | 160 | ||
156 | What: /sys/kernel/slab/cache/deactivate_remote_frees | 161 | What: /sys/kernel/slab/cache/deactivate_remote_frees |
@@ -159,9 +164,9 @@ KernelVersion: 2.6.25 | |||
159 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 164 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
160 | Christoph Lameter <cl@linux-foundation.org> | 165 | Christoph Lameter <cl@linux-foundation.org> |
161 | Description: | 166 | Description: |
162 | The file deactivate_remote_frees is read-only and specifies how | 167 | The deactivate_remote_frees file shows how many times a cpu slab |
163 | many times a cpu slab has been deactivated and contained free | 168 | has been deactivated and contained free objects that were freed |
164 | objects that were freed remotely. | 169 | remotely. It can be written to clear the current count. |
165 | Available when CONFIG_SLUB_STATS is enabled. | 170 | Available when CONFIG_SLUB_STATS is enabled. |
166 | 171 | ||
167 | What: /sys/kernel/slab/cache/deactivate_to_head | 172 | What: /sys/kernel/slab/cache/deactivate_to_head |
@@ -170,9 +175,9 @@ KernelVersion: 2.6.25 | |||
170 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 175 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
171 | Christoph Lameter <cl@linux-foundation.org> | 176 | Christoph Lameter <cl@linux-foundation.org> |
172 | Description: | 177 | Description: |
173 | The file deactivate_to_head is read-only and specifies how | 178 | The deactivate_to_head file shows how many times a partial cpu |
174 | many times a partial cpu slab was deactivated and added to the | 179 | slab was deactivated and added to the head of its node's partial |
175 | head of its node's partial list. | 180 | list. It can be written to clear the current count. |
176 | Available when CONFIG_SLUB_STATS is enabled. | 181 | Available when CONFIG_SLUB_STATS is enabled. |
177 | 182 | ||
178 | What: /sys/kernel/slab/cache/deactivate_to_tail | 183 | What: /sys/kernel/slab/cache/deactivate_to_tail |
@@ -181,9 +186,9 @@ KernelVersion: 2.6.25 | |||
181 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 186 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
182 | Christoph Lameter <cl@linux-foundation.org> | 187 | Christoph Lameter <cl@linux-foundation.org> |
183 | Description: | 188 | Description: |
184 | The file deactivate_to_tail is read-only and specifies how | 189 | The deactivate_to_tail file shows how many times a partial cpu |
185 | many times a partial cpu slab was deactivated and added to the | 190 | slab was deactivated and added to the tail of its node's partial |
186 | tail of its node's partial list. | 191 | list. It can be written to clear the current count. |
187 | Available when CONFIG_SLUB_STATS is enabled. | 192 | Available when CONFIG_SLUB_STATS is enabled. |
188 | 193 | ||
189 | What: /sys/kernel/slab/cache/destroy_by_rcu | 194 | What: /sys/kernel/slab/cache/destroy_by_rcu |
@@ -201,9 +206,9 @@ KernelVersion: 2.6.25 | |||
201 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 206 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
202 | Christoph Lameter <cl@linux-foundation.org> | 207 | Christoph Lameter <cl@linux-foundation.org> |
203 | Description: | 208 | Description: |
204 | The file free_add_partial is read-only and specifies how many | 209 | The free_add_partial file shows how many times an object has |
205 | times an object has been freed in a full slab so that it had to | 210 | been freed in a full slab so that it had to added to its node's |
206 | added to its node's partial list. | 211 | partial list. It can be written to clear the current count. |
207 | Available when CONFIG_SLUB_STATS is enabled. | 212 | Available when CONFIG_SLUB_STATS is enabled. |
208 | 213 | ||
209 | What: /sys/kernel/slab/cache/free_calls | 214 | What: /sys/kernel/slab/cache/free_calls |
@@ -222,9 +227,9 @@ KernelVersion: 2.6.25 | |||
222 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 227 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
223 | Christoph Lameter <cl@linux-foundation.org> | 228 | Christoph Lameter <cl@linux-foundation.org> |
224 | Description: | 229 | Description: |
225 | The free_fastpath file is read-only and specifies how many | 230 | The free_fastpath file shows how many objects have been freed |
226 | objects have been freed using the fast path because it was an | 231 | using the fast path because it was an object from the cpu slab. |
227 | object from the cpu slab. | 232 | It can be written to clear the current count. |
228 | Available when CONFIG_SLUB_STATS is enabled. | 233 | Available when CONFIG_SLUB_STATS is enabled. |
229 | 234 | ||
230 | What: /sys/kernel/slab/cache/free_frozen | 235 | What: /sys/kernel/slab/cache/free_frozen |
@@ -233,9 +238,9 @@ KernelVersion: 2.6.25 | |||
233 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 238 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
234 | Christoph Lameter <cl@linux-foundation.org> | 239 | Christoph Lameter <cl@linux-foundation.org> |
235 | Description: | 240 | Description: |
236 | The free_frozen file is read-only and specifies how many | 241 | The free_frozen file shows how many objects have been freed to |
237 | objects have been freed to a frozen slab (i.e. a remote cpu | 242 | a frozen slab (i.e. a remote cpu slab). It can be written to |
238 | slab). | 243 | clear the current count. |
239 | Available when CONFIG_SLUB_STATS is enabled. | 244 | Available when CONFIG_SLUB_STATS is enabled. |
240 | 245 | ||
241 | What: /sys/kernel/slab/cache/free_remove_partial | 246 | What: /sys/kernel/slab/cache/free_remove_partial |
@@ -244,9 +249,10 @@ KernelVersion: 2.6.25 | |||
244 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 249 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
245 | Christoph Lameter <cl@linux-foundation.org> | 250 | Christoph Lameter <cl@linux-foundation.org> |
246 | Description: | 251 | Description: |
247 | The file free_remove_partial is read-only and specifies how | 252 | The free_remove_partial file shows how many times an object has |
248 | many times an object has been freed to a now-empty slab so | 253 | been freed to a now-empty slab so that it had to be removed from |
249 | that it had to be removed from its node's partial list. | 254 | its node's partial list. It can be written to clear the current |
255 | count. | ||
250 | Available when CONFIG_SLUB_STATS is enabled. | 256 | Available when CONFIG_SLUB_STATS is enabled. |
251 | 257 | ||
252 | What: /sys/kernel/slab/cache/free_slab | 258 | What: /sys/kernel/slab/cache/free_slab |
@@ -255,8 +261,9 @@ KernelVersion: 2.6.25 | |||
255 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 261 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
256 | Christoph Lameter <cl@linux-foundation.org> | 262 | Christoph Lameter <cl@linux-foundation.org> |
257 | Description: | 263 | Description: |
258 | The free_slab file is read-only and specifies how many times an | 264 | The free_slab file shows how many times an empty slab has been |
259 | empty slab has been freed back to the page allocator. | 265 | freed back to the page allocator. It can be written to clear |
266 | the current count. | ||
260 | Available when CONFIG_SLUB_STATS is enabled. | 267 | Available when CONFIG_SLUB_STATS is enabled. |
261 | 268 | ||
262 | What: /sys/kernel/slab/cache/free_slowpath | 269 | What: /sys/kernel/slab/cache/free_slowpath |
@@ -265,9 +272,9 @@ KernelVersion: 2.6.25 | |||
265 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 272 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
266 | Christoph Lameter <cl@linux-foundation.org> | 273 | Christoph Lameter <cl@linux-foundation.org> |
267 | Description: | 274 | Description: |
268 | The free_slowpath file is read-only and specifies how many | 275 | The free_slowpath file shows how many objects have been freed |
269 | objects have been freed using the slow path (i.e. to a full or | 276 | using the slow path (i.e. to a full or partial slab). It can |
270 | partial slab). | 277 | be written to clear the current count. |
271 | Available when CONFIG_SLUB_STATS is enabled. | 278 | Available when CONFIG_SLUB_STATS is enabled. |
272 | 279 | ||
273 | What: /sys/kernel/slab/cache/hwcache_align | 280 | What: /sys/kernel/slab/cache/hwcache_align |
@@ -346,10 +353,10 @@ KernelVersion: 2.6.26 | |||
346 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, | 353 | Contact: Pekka Enberg <penberg@cs.helsinki.fi>, |
347 | Christoph Lameter <cl@linux-foundation.org> | 354 | Christoph Lameter <cl@linux-foundation.org> |
348 | Description: | 355 | Description: |
349 | The file order_fallback is read-only and specifies how many | 356 | The order_fallback file shows how many times an allocation of a |
350 | times an allocation of a new slab has not been possible at the | 357 | new slab has not been possible at the cache's order and instead |
351 | cache's order and instead fallen back to its minimum possible | 358 | fallen back to its minimum possible order. It can be written to |
352 | order. | 359 | clear the current count. |
353 | Available when CONFIG_SLUB_STATS is enabled. | 360 | Available when CONFIG_SLUB_STATS is enabled. |
354 | 361 | ||
355 | What: /sys/kernel/slab/cache/partial | 362 | What: /sys/kernel/slab/cache/partial |