android_kernel_google_msm/block
Roman Pen 14eee5bd06 blktrace: fix accounting of partially completed requests
commit af5040da01 upstream.

trace_block_rq_complete does not take into account that request can
be partially completed, so we can get the following incorrect output
of blkparser:

  C   R 232 + 240 [0]
  C   R 240 + 232 [0]
  C   R 248 + 224 [0]
  C   R 256 + 216 [0]

but should be:

  C   R 232 + 8 [0]
  C   R 240 + 8 [0]
  C   R 248 + 8 [0]
  C   R 256 + 8 [0]

Also, the whole output summary statistics of completed requests and
final throughput will be incorrect.

This patch takes into account real completion size of the request and
fixes wrong completion accounting.

Signed-off-by: Roman Pen <r.peniaev@gmail.com>
CC: Steven Rostedt <rostedt@goodmis.org>
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Ingo Molnar <mingo@redhat.com>
CC: linux-kernel@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-18 05:25:55 -07:00
..
partitions LDM: Fix reassembly of extended VBLKs. 2012-02-24 09:37:42 +00:00
blk-cgroup.c Merge branch 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2012-03-20 18:11:21 -07:00
blk-cgroup.h block: fix a typo in the blk-cgroup.h file 2011-10-24 16:08:38 +02:00
blk-core.c blktrace: fix accounting of partially completed requests 2014-05-18 05:25:55 -07:00
blk-exec.c block: Don't access request after it might be freed 2014-03-11 16:10:06 -07:00
blk-flush.c blk-flush: move the queue kick into 2011-10-24 16:24:31 +02:00
blk-integrity.c block: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros 2011-10-31 19:31:12 -04:00
blk-ioc.c block: fix ioc leak in put_io_context 2012-03-14 15:34:48 +01:00
blk-iopoll.c
blk-lib.c block: add cond_resched() to potentially long running ioctl discard loop 2014-02-22 10:32:46 -08:00
blk-map.c block: re-use existing 'reading' variable instead of checking direction again 2011-12-21 15:27:24 +01:00
blk-merge.c block: separate out blk_rq_merge_ok() and blk_try_merge() from elevator functions 2012-02-08 09:19:38 +01:00
blk-settings.c block: properly stack underlying max_segment_size to DM device 2013-11-29 10:50:36 -08:00
blk-softirq.c sched, block: Unify cache detection 2012-01-27 13:28:48 +01:00
blk-sysfs.c block: avoid using uninitialized value in from queue_var_store 2013-04-12 09:38:46 -07:00
blk-tag.c block: fix blk_queue_end_tag() 2011-12-29 09:16:28 +01:00
blk-throttle.c block: use lockdep_assert_held for queue locking 2012-03-30 12:33:28 +02:00
blk-timeout.c block: fix race between request completion and timeout handling 2013-11-29 10:50:35 -08:00
blk.h Merge branch 'linus' into sched/core 2012-03-01 10:26:43 +01:00
bsg-lib.c block: Change module.h -> export.h in bsg-lib.c 2011-10-31 19:31:13 -04:00
bsg.c bsg: fix sysfs link remove warning 2012-02-08 20:02:03 +01:00
cfq-iosched.c block: Make cfq_target_latency tunable through sysfs. 2012-04-01 14:33:39 -07:00
cfq.h
compat_ioctl.c block: Add BLKROTATIONAL ioctl 2012-01-11 16:29:31 +01:00
deadline-iosched.c block, cfq: move icq cache management to block core 2011-12-14 00:33:42 +01:00
elevator.c elevator: acquire q->sysfs_lock in elevator_change() 2013-12-08 07:29:43 -08:00
genhd.c block: do not pass disk names as format strings 2013-07-13 11:03:41 -07:00
ioctl.c Merge branch 'for-3.3/core' of git://git.kernel.dk/linux-block 2012-01-15 12:24:45 -08:00
Kconfig move fs/partitions to block/ 2012-01-03 22:54:06 -05:00
Kconfig.iosched
Makefile separate partition format handling from generic code 2012-01-03 22:54:06 -05:00
noop-iosched.c block, cfq: move icq cache management to block core 2011-12-14 00:33:42 +01:00
partition-generic.c block: fix ext_devt_idr handling 2013-03-04 06:06:40 +08:00
scsi_ioctl.c scsi: Silence unnecessary warnings about ioctl to partition 2012-12-03 11:47:11 -08:00