talos-obmc-linux/kernel/trace/blktrace.c, branch dev-4.13-fsi

block: switch bios to blk_status_t

2017-06-09T15:27:32+00:00

Replace bi_error with a new bi_status to allow for a clear conversion. Note that device mapper overloaded bi_error with a private value, which we'll have to keep arround at least for now and thus propagate to a proper blk_status_t value. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

blktrace: fix integer parse

2017-05-19T15:21:15+00:00

sscanf is a very poor way to parse integer. For example, I input "discard" for act_mask, it gets 0xd and completely messes up. Using correct API to do integer parse. This patch also makes attributes accept any base of integer. Signed-off-by: Shaohua Li Signed-off-by: Jens Axboe

block: remove the errors field from struct request

2017-04-20T18:16:10+00:00

Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Acked-by: Roger Pau Monné Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: Jens Axboe

blktrace: remove the unused block_rq_abort tracepoint

2017-04-20T18:16:10+00:00

Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe

blktrace: use existing disk debugfs directory

2017-02-02T17:20:16+00:00

We may already have a directory to put the blktrace stuff in if 1. The disk uses blk-mq 2. CONFIG_BLK_DEBUG_FS is enabled 3. We are tracing the whole disk and not a partition Instead of hardcoding this very specific case, let's use the new debugfs_lookup(). If the directory exists, we use it, otherwise we create one and clean it up later. Fixes: 07e4fead45e6 ("blk-mq: create debugfs directory tree") Signed-off-by: Omar Sandoval Signed-off-by: Jens Axboe

block: use same block debugfs directory for blk-mq and blktrace

2017-02-02T17:20:16+00:00

When I added the blk-mq debugging information to debugfs, I didn't notice that blktrace also creates a "block" directory in debugfs. Make them use the same dentry, now created in the core block code. Based on a patch from Jens. Signed-off-by: Omar Sandoval Signed-off-by: Jens Axboe

blktrace: make do_blk_trace_setup() static

2017-02-02T17:20:16+00:00

This isn't used outside of blktrace.c anymore. Fixes: 62c2a7d969f3 ("block: push BKL into blktrace ioctls") Signed-off-by: Omar Sandoval Signed-off-by: Jens Axboe

block: introduce blk_rq_is_passthrough

2017-01-31T21:00:34+00:00

This can be used to check for fs vs non-fs requests and basically removes all knowledge of BLOCK_PC specific from the block layer, as well as preparing for removing the cmd_type field in struct request. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: cleanup tracing

2017-01-27T22:08:35+00:00

A couple tweaks to the tracing code: - trace the request size for all requests - trace request sector and nr_sectors only for fs requests, enforced by helpers - drop SCSI CDB tracing - we have SCSI tracing for this and are going to me the CDB out of the generic struct request soon. With this the tracing code stops to know about BLOCK_PC requests entirely, it's just FS vs passthrough requests now, where the latter includes any driver-private requests. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: better op and flags encoding

2016-10-28T14:48:16+00:00

Now that we don't need the common flags to overflow outside the range of a 32-bit type we can encode them the same way for both the bio and request fields. This in addition allows us to place the operation first (and make some room for more ops while we're at it) and to stop having to shift around the operation values. In addition this allows passing around only one value in the block layer instead of two (and eventuall also in the file systems, but we can do that later) and thus clean up a lot of code. Last but not least this allows decreasing the size of the cmd_flags field in struct request to 32-bits. Various functions passing this value could also be updated, but I'd like to avoid the churn for now. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe