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af5040da01
linux/block
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Roman Pen af5040da01 blktrace: fix accounting of partially completed requests 
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
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
2014-03-05 16:11:21 -07:00
..
partitions block: Use macros from compiler.h instead of __attribute__((...)) 2014-02-18 12:20:01 -08:00
blk-cgroup.c block: Substitute rcu_access_pointer() for rcu_dereference_raw() 2014-02-18 12:21:26 -08:00
blk-cgroup.h Update of blkg_stat and blkg_rwstat may happen in bh context. 2013-11-20 15:33:04 -07:00
blk-core.c blktrace: fix accounting of partially completed requests 2014-03-05 16:11:21 -07:00
blk-exec.c blk-mq: support at_head inserations for blk_execute_rq 2014-02-07 11:58:54 -07:00
blk-flush.c blk-mq: rework flush sequencing logic 2014-02-10 09:29:00 -07:00
blk-integrity.c bio-integrity: Convert to bvec_iter 2013-11-23 22:33:50 -08:00
blk-ioc.c block: Substitute rcu_access_pointer() for rcu_dereference_raw() 2014-02-18 12:21:26 -08:00
blk-iopoll.c block: Replace __get_cpu_var uses 2013-11-08 08:59:58 -07:00
blk-lib.c block: add cond_resched() to potentially long running ioctl discard loop 2014-02-12 09:36:37 -07:00
blk-map.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
blk-merge.c block: Explicitly handle discard/write same segments 2014-02-07 13:54:08 -07:00
blk-mq-cpu.c block/blk-mq-cpu.c: use hotcpu_notifier() 2014-01-28 09:52:01 -07:00
blk-mq-cpumap.c blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-mq-sysfs.c block: fix memory leaks on unplugging block device 2013-12-06 09:18:02 -07:00
blk-mq-tag.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2014-02-14 10:45:18 -08:00
blk-mq-tag.h blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-mq.c blktrace: fix accounting of partially completed requests 2014-03-05 16:11:21 -07:00
blk-mq.h blk-mq: rework flush sequencing logic 2014-02-10 09:29:00 -07:00
blk-settings.c bcache/md: Use raid stripe size 2014-01-08 13:05:09 -08:00
blk-softirq.c smp: Rename __smp_call_function_single() to smp_call_function_single_async() 2014-02-24 14:47:15 -08:00
blk-sysfs.c blk-mq: rework flush sequencing logic 2014-02-10 09:29:00 -07:00
blk-tag.c block: Reserve only one queue tag for sync IO if only 3 tags are available 2013-06-28 21:32:27 +02:00
blk-throttle.c Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block 2014-01-30 11:19:05 -08:00
blk-timeout.c blk-mq: rework I/O completions 2014-02-10 09:27:31 -07:00
blk.h block: __elv_next_request() shouldn't call into the elevator if bypassing 2014-01-30 12:57:25 -07:00
bsg-lib.c bsg: Remove unused function bsg_goose_queue() 2012-12-06 14:33:02 +01:00
bsg.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
cfq-iosched.c block: Stop abusing csd.list for fifo_time 2014-02-24 14:46:32 -08:00
cmdline-parser.c block: remove unrelated header files and export symbol 2014-01-21 20:18:26 -08:00
compat_ioctl.c kernel-wide: fix missing validations on __get/__put/__copy_to/__copy_from_user() 2013-09-11 15:58:18 -07:00
deadline-iosched.c block: Stop abusing csd.list for fifo_time 2014-02-24 14:46:32 -08:00
elevator.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
genhd.c block: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...) 2013-09-11 13:22:03 -06:00
ioctl.c block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO 2013-11-08 09:05:31 -07:00
Kconfig block: change config option name for cmdline partition parsing 2013-09-30 14:31:02 -07:00
Kconfig.iosched blkcg: make CONFIG_BLK_CGROUP bool 2012-03-06 21:27:21 +01:00
Makefile blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
noop-iosched.c elevator: Fix a race in elevator switching 2013-07-03 13:25:24 +02:00
partition-generic.c Revert "loop: cleanup partitions when detaching loop device" 2013-04-08 10:12:11 +02:00
scsi_ioctl.c block: Fix memory leak in rw_copy_check_uvector() handling 2014-01-21 20:36:17 -08:00