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This test adds the ability to test the UFS task management feature
in the driver. It loads the queue with requests in order to allow
the task management to operate in full capacity.

Modify test-iosched infrastructure to support the new tests:
- expose  check_test_completion()

Note: we submit 16-bio requests since the current HW is very slow
and we don't want to exceed the timeout duration.

Change-Id: I8ee752cba3c6838d8edc05747fa0288c4b347ef6
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

Change time measurements in long_sequential_test from jiffies to ktime,
and make the relevant change in test-iosched infrastructure.

In long_sequential_test we measure throughput, and the jiffies resolution
is not sensitive enough for this calculation.

Change-Id: If7c9a03c687f61996609c014e056bcd7132b9012
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

An urgent request is marked by the scheduler in rq->cmd_flags with the
REQ_URGENT flag. There is no need to add an additional marking by
the block layer.

Change-Id: I05d5e9539d2f6c1bfa80240b0671db197a5d3b3f
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>

In order to be sure that the packing statistics collected after the test
reflect *only* requests issued by the test (and not real request from
FS) - sleep before each test in order to give an already dispatched
requests time to complete.

Change-Id: If2f40efad1d79084a8ea85afe93cce58e49ff698
CRs-Fixed: 453712
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>

The __blk_run_queue function is called from several contexts. The fix is
replacing it with blk_run_queue function, this function is guarded with
a lock, thus making it thread safe and prevents the crashing.

Change-Id: I3e12fa9c8b9e161375fffa3570abfa46b223a60b
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>

Change-Id: I9d411a9c00b37d0907066dbfa6db3a78c108646f
Signed-off-by: Duy Truong <dtruong@codeaurora.org>

Change the test design so that requests are dynamically created
and freed. This enables running tests with more than 128 requests,
therefore more than 50MiB can be written/read and makes it possible
to measure driver write/read throughput more accurately.

Change-Id: I56c9d6c1afba5c91a0621a16d97feafd4689521d
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

Some block devices requires the rq_disk field to be assigned.
This patch exposes a new API to the block device test utility for
getting the rq_disk assigned, in the created request.

Change-Id: I61dc4dad50eb7600728156a6cd08bb1ee134df0d
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>

Add functionality to test-iosched so that it could simulate the
ROW scheduler behaviour. The main additions are:
- 3 distinct requests queue with counters
- support for urgent request pending
- reinsert request implementation (callback + dispatch behavior)

Change-Id: I83b5d9e3d2b8cd9a2353afa6a3e6a4cbc83b0cd4
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

Change the printout format to be more readable.
Specifically, add quotes around the test case name
strings.

Change-Id: I51b0c1b94389e4b51af84c5e993207b18efc2226
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

Long sequential read test measures read throughput
at the driver level by reading large requests sequentially.

Change-Id: I3b6d685930e1d0faceabbc7d20489111734cc9d4
Signed-off-by: Lee Susman <lsusman@codeaurora.org>

This test write data to the card, then send DISCARD on random
addresses on the card, send SANITIZE to the card to erase all
the unmapped areas.

Change-Id: I2904023ccd258e64b99b004bacfbe576b0ead59a
Signed-off-by: Maya Erez <merez@codeaurora.org>

- Fix test-iosched crash when running multiple tests
- Free the BIOs memory when a request is not completed

Change-Id: I1baa916c04ae73c809dee7e67ec63f4546dc71aa
Signed-off-by: Maya Erez <merez@codeaurora.org>

The test scheduler allows testing a block device by dispatching
specific requests according to the test case and declare PASS/FAIL
according to the requests completion error code

Change-Id: Ief91f9fed6e3c3c75627d27264d5252ea14f10ad
Signed-off-by: Maya Erez <merez@codeaurora.org>