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| author | Vivek Goyal <vgoyal@redhat.com> | 2010-04-26 19:27:56 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-04-26 19:27:56 +0200 |
| commit | afc24d49c1e5dbeef745c1c1246f5ae6ebd97c71 (patch) | |
| tree | c936676ed21d032bf1d27f9ff1451f6242c8b3b6 /block/Kconfig | |
| parent | blkio: Fix another BUG_ON() crash due to cfqq movement across groups (diff) | |
| download | linux-afc24d49c1e5dbeef745c1c1246f5ae6ebd97c71.tar.xz linux-afc24d49c1e5dbeef745c1c1246f5ae6ebd97c71.zip | |
blk-cgroup: config options re-arrangement
This patch fixes few usability and configurability issues.
o All the cgroup based controller options are configurable from
"Genral Setup/Control Group Support/" menu. blkio is the only exception.
Hence make this option visible in above menu and make it configurable from
there to bring it inline with rest of the cgroup based controllers.
o Get rid of CONFIG_DEBUG_CFQ_IOSCHED.
This option currently does two things.
- Enable printing of cgroup paths in blktrace
- Enables CONFIG_DEBUG_BLK_CGROUP, which in turn displays additional stat
files in cgroup.
If we are using group scheduling, blktrace data is of not really much use
if cgroup information is not present. To get this data, currently one has to
also enable CONFIG_DEBUG_CFQ_IOSCHED, which in turn brings the overhead of
all the additional debug stat files which is not desired.
Hence, this patch moves printing of cgroup paths under
CONFIG_CFQ_GROUP_IOSCHED.
This allows us to get rid of CONFIG_DEBUG_CFQ_IOSCHED completely. Now all
the debug stat files are controlled only by CONFIG_DEBUG_BLK_CGROUP which
can be enabled through config menu.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Divyesh Shah <dpshah@google.com>
Reviewed-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/Kconfig')
| -rw-r--r-- | block/Kconfig | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/block/Kconfig b/block/Kconfig index f9e89f4d94bb..9be0b56eaee1 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -77,29 +77,6 @@ config BLK_DEV_INTEGRITY T10/SCSI Data Integrity Field or the T13/ATA External Path Protection. If in doubt, say N. -config BLK_CGROUP - tristate "Block cgroup support" - depends on CGROUPS - depends on CFQ_GROUP_IOSCHED - default n - ---help--- - Generic block IO controller cgroup interface. This is the common - cgroup interface which should be used by various IO controlling - policies. - - Currently, CFQ IO scheduler uses it to recognize task groups and - control disk bandwidth allocation (proportional time slice allocation) - to such task groups. - -config DEBUG_BLK_CGROUP - bool - depends on BLK_CGROUP - default n - ---help--- - Enable some debugging help. Currently it stores the cgroup path - in the blk group which can be used by cfq for tracing various - group related activity. - endif # BLOCK config BLOCK_COMPAT |