aboutsummaryrefslogtreecommitdiff
path: root/include/linux/blktrace_api.h
AgeCommit message (Collapse)AuthorFilesLines
2008-07-03Added in user-injected messages into blk tracesAlan D. Brunelle1-0/+1
This allows a user to annotate the blk trace stream: writing a suitable message to {/sys/kernel/debug}/block/<dsf>/msg will have it propagated into the trace stream. Signed-off-by: Alan D. Brunelle <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2008-05-28block: make blktrace use per-cpu buffers for message notesJens Axboe1-1/+2
Currently it uses a single static char array, but that risks being corrupted when multiple users issue message notes at the same time. Make the buffers dynamically allocated when the trace is setup and make them per-cpu instead. The default max message size of 1k is also very large, the interface is mainly for small text notes. So shrink it to 128 bytes. Signed-off-by: Jens Axboe <[email protected]>
2008-05-28Added in MESSAGE notes for blktracesAlan D. Brunelle1-0/+25
Allows messages to be inserted into blktrace streams. Signed-off-by: Alan D. Brunelle <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2008-01-29Fix blktrace compile warningMartin K. Petersen1-3/+3
request_queue_t is deprecated Signed-off-by: Martin K. Petersen <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2008-01-28blktrace: Add blktrace ioctls to SCSI generic devicesChristof Schmitt1-2/+10
Since the SCSI layer uses the request queues from the block layer, blktrace can also be used to trace the requests to all SCSI devices (like SCSI tape drives), not only disks. The only missing part is the ioctl interface to start and stop tracing. This patch adds the SETUP, START, STOP and TEARDOWN ioctls from blktrace to the sg device files. With this change, blktrace can be used for SCSI devices like for disks, e.g.: blktrace -d /dev/sg1 -o - | blkparse -i - Signed-off-by: Christof Schmitt <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2007-10-12[BLOCK] Better fix for do_blk_trace_setup() for !CONFIG_BLOCKJens Axboe1-6/+1
We don't have the request queue definition, so just make it a macro instead. Signed-off-by: Jens Axboe <[email protected]>
2007-10-11[BLOCK] Fix failing compile with BLK_DEV_IO_TRACE=nBoaz Harrosh1-1/+6
I get a compilation error in sglist-arch branch with BLK_DEV_IO_TRACE=n: CC block/compat_ioctl.o /usr0/export/dev/bharrosh/git/pub/linux-2.6-block/block/compat_ioctl.c: In function ?compat_blk_trace_setup?: /usr0/export/dev/bharrosh/git/pub/linux-2.6-block/block/compat_ioctl.c:568: error: expected expression before ?do? make[2]: *** [block/compat_ioctl.o] Error 1 Signed-off-by: Jens Axboe <[email protected]>
2007-10-10compat_ioctl: handle blk_trace ioctlsArnd Bergmann1-1/+6
blk_trace_setup is broken on x86_64 compat systems, this makes the code work correctly on all 64 bit architectures in compat mode. Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2007-08-11Fix remap handling by blktraceAlan D. Brunelle1-1/+2
This patch provides more information concerning REMAP operations on block IOs. The additional information provides clearer details at the user level, and supports post-processing analysis in btt. o Adds in partition remaps on the same device. o Fixed up the remap information in DM to be in the right order o Sent up mapped-from and mapped-to device information Signed-off-by: Alan D. Brunelle <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2007-07-24[BLOCK] Get rid of request_queue_t typedefJens Axboe1-1/+1
Some of the code has been gradually transitioned to using the proper struct request_queue, but there's lots left. So do a full sweet of the kernel and get rid of this typedef and replace its uses with the proper type. Signed-off-by: Jens Axboe <[email protected]>
2006-12-01[PATCH] blktrace: add timestamp messageOlaf Kirch1-0/+12
This adds a new timestamp message to blktrace, giving the timeofday when we starting tracing. This helps user space correlate block trace events with eg an application strace. This requires a (compatible) update to blkparse. The changed blkparse is still able to process traces generated by older kernels, and older versions of blkparse should silently ignore the new records (because they have a pid of 0). Signed-off-by: Olaf Kirch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2006-09-30[PATCH] blktrace: support for logging metadata readsJens Axboe1-0/+1
Signed-off-by: Jens Axboe <[email protected]>
2006-09-30[PATCH] Split struct request ->flags into two partsJens Axboe1-1/+1
Right now ->flags is a bit of a mess: some are request types, and others are just modifiers. Clean this up by splitting it into ->cmd_type and ->cmd_flags. This allows introduction of generic Linux block message types, useful for sending generic Linux commands to block devices. Signed-off-by: Jens Axboe <[email protected]>
2006-07-06[PATCH] Only the first two bits in bio->bi_rw and rq->flags matchJens Axboe1-1/+1
Not three, as assumed. This causes the barrier bit to be needlessly set for some IO. Signed-off-by: Jens Axboe <[email protected]>
2006-07-06[PATCH] blktrace: readahead supportNathan Scott1-0/+1
Provide the needed kernel support for distinguishing readahead from regular read requests when tracing block devices. Signed-off-by: Nathan Scott <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2006-07-06[PATCH] blktrace: fix barrier vs sync typoNathan Scott1-1/+1
Signed-off-by: Nathan Scott <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2006-06-23[PATCH] blktrace_api.h: endian annotationsAlexey Dobriyan1-3/+3
Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2006-04-26Don't include linux/config.h from anywhere else in include/David Woodhouse1-1/+0
Signed-off-by: David Woodhouse <[email protected]>
2006-03-23[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23Jens Axboe1-0/+277
Signed-off-by: Jens Axboe <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.