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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-21 00:12:50 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-21 00:12:50 -0400
commit69a7aebcf019ab3ff5764525ad6858fbe23bb86d (patch)
tree7211df5704b743a7667159748c670a9744164482 /Documentation/cgroups
parentd464c92b5234227c1698862a1906827e2e398ae0 (diff)
parentf1f996b66cc3908a8f5ffccc2ff41840e92f3b10 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree from Jiri Kosina: "It's indeed trivial -- mostly documentation updates and a bunch of typo fixes from Masanari. There are also several linux/version.h include removals from Jesper." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (101 commits) kcore: fix spelling in read_kcore() comment constify struct pci_dev * in obvious cases Revert "char: Fix typo in viotape.c" init: fix wording error in mm_init comment usb: gadget: Kconfig: fix typo for 'different' Revert "power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c" writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header writeback: fix typo in the writeback_control comment Documentation: Fix multiple typo in Documentation tpm_tis: fix tis_lock with respect to RCU Revert "media: Fix typo in mixer_drv.c and hdmi_drv.c" Doc: Update numastat.txt qla4xxx: Add missing spaces to error messages compiler.h: Fix typo security: struct security_operations kerneldoc fix Documentation: broken URL in libata.tmpl Documentation: broken URL in filesystems.tmpl mtd: simplify return logic in do_map_probe() mm: fix comment typo of truncate_inode_pages_range power: bq27x00: Fix typos in comment ...
Diffstat (limited to 'Documentation/cgroups')
-rw-r--r--Documentation/cgroups/blkio-controller.txt18
1 files changed, 9 insertions, 9 deletions
diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt
index 84f0a15fc210..b4b1fb3a83f0 100644
--- a/Documentation/cgroups/blkio-controller.txt
+++ b/Documentation/cgroups/blkio-controller.txt
@@ -94,11 +94,11 @@ Throttling/Upper Limit policy
94 94
95Hierarchical Cgroups 95Hierarchical Cgroups
96==================== 96====================
97- Currently none of the IO control policy supports hierarhical groups. But 97- Currently none of the IO control policy supports hierarchical groups. But
98 cgroup interface does allow creation of hierarhical cgroups and internally 98 cgroup interface does allow creation of hierarchical cgroups and internally
99 IO policies treat them as flat hierarchy. 99 IO policies treat them as flat hierarchy.
100 100
101 So this patch will allow creation of cgroup hierarhcy but at the backend 101 So this patch will allow creation of cgroup hierarchcy but at the backend
102 everything will be treated as flat. So if somebody created a hierarchy like 102 everything will be treated as flat. So if somebody created a hierarchy like
103 as follows. 103 as follows.
104 104
@@ -266,7 +266,7 @@ Proportional weight policy files
266- blkio.idle_time 266- blkio.idle_time
267 - Debugging aid only enabled if CONFIG_DEBUG_BLK_CGROUP=y. 267 - Debugging aid only enabled if CONFIG_DEBUG_BLK_CGROUP=y.
268 This is the amount of time spent by the IO scheduler idling for a 268 This is the amount of time spent by the IO scheduler idling for a
269 given cgroup in anticipation of a better request than the exising ones 269 given cgroup in anticipation of a better request than the existing ones
270 from other queues/cgroups. This is in nanoseconds. If this is read 270 from other queues/cgroups. This is in nanoseconds. If this is read
271 when the cgroup is in an idling state, the stat will only report the 271 when the cgroup is in an idling state, the stat will only report the
272 idle_time accumulated till the last idle period and will not include 272 idle_time accumulated till the last idle period and will not include
@@ -283,34 +283,34 @@ Throttling/Upper limit policy files
283----------------------------------- 283-----------------------------------
284- blkio.throttle.read_bps_device 284- blkio.throttle.read_bps_device
285 - Specifies upper limit on READ rate from the device. IO rate is 285 - Specifies upper limit on READ rate from the device. IO rate is
286 specified in bytes per second. Rules are per deivce. Following is 286 specified in bytes per second. Rules are per device. Following is
287 the format. 287 the format.
288 288
289 echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device 289 echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device
290 290
291- blkio.throttle.write_bps_device 291- blkio.throttle.write_bps_device
292 - Specifies upper limit on WRITE rate to the device. IO rate is 292 - Specifies upper limit on WRITE rate to the device. IO rate is
293 specified in bytes per second. Rules are per deivce. Following is 293 specified in bytes per second. Rules are per device. Following is
294 the format. 294 the format.
295 295
296 echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device 296 echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device
297 297
298- blkio.throttle.read_iops_device 298- blkio.throttle.read_iops_device
299 - Specifies upper limit on READ rate from the device. IO rate is 299 - Specifies upper limit on READ rate from the device. IO rate is
300 specified in IO per second. Rules are per deivce. Following is 300 specified in IO per second. Rules are per device. Following is
301 the format. 301 the format.
302 302
303 echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device 303 echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device
304 304
305- blkio.throttle.write_iops_device 305- blkio.throttle.write_iops_device
306 - Specifies upper limit on WRITE rate to the device. IO rate is 306 - Specifies upper limit on WRITE rate to the device. IO rate is
307 specified in io per second. Rules are per deivce. Following is 307 specified in io per second. Rules are per device. Following is
308 the format. 308 the format.
309 309
310 echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device 310 echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device
311 311
312Note: If both BW and IOPS rules are specified for a device, then IO is 312Note: If both BW and IOPS rules are specified for a device, then IO is
313 subjectd to both the constraints. 313 subjected to both the constraints.
314 314
315- blkio.throttle.io_serviced 315- blkio.throttle.io_serviced
316 - Number of IOs (bio) completed to/from the disk by the group (as 316 - Number of IOs (bio) completed to/from the disk by the group (as