kernel.git/drivers/mmc/card, branch linux-3.1.y

block: separate priority boosting from REQ_META

2011-08-23T12:50:29Z

Add a new REQ_PRIO to let requests preempt others in the cfq I/O schedule, and lave REQ_META purely for marking requests as metadata in blktrace. All existing callers of REQ_META except for XFS are updated to also set REQ_PRIO for now. Signed-off-by: Christoph Hellwig Reviewed-by: Namhyung Kim Signed-off-by: Jens Axboe

mmc: core: use defined R1_STATE_PRG macro for card status

2011-08-13T18:50:31Z

Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Signed-off-by: Chris Ball

mmc: mmc_test: avoid stalled file in debugfs

2011-08-13T18:50:22Z

During card removal and inserting cycle the test file in the debugfs could be stalled until the host driver removes it. Let's keep the file in the linked list and destroy it when card is removed. Signed-off-by: Andy Shevchenko Acked-by: Per Forlin Signed-off-by: Chris Ball

mmc: block: fixed NULL pointer dereference

2011-07-21T14:35:00Z

We already check for ongoing async transfers when handling discard requests, but not in mmc_blk_issue_flush(). This patch fixes that omission. Tested with an SDHCI controller and eMMC4.41. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Acked-by: Per Forlin Cc: Signed-off-by: Chris Ball

mmc: block: add handling for two parallel block requests in issue_rw_rq

2011-07-20T21:21:15Z

Change mmc_blk_issue_rw_rq() to become asynchronous. The execution flow looks like this: * The mmc-queue calls issue_rw_rq(), which sends the request to the host and returns back to the mmc-queue. * The mmc-queue calls issue_rw_rq() again with a new request. * This new request is prepared in issue_rw_rq(), then it waits for the active request to complete before pushing it to the host. * When the mmc-queue is empty it will call issue_rw_rq() with a NULL req to finish off the active request without starting a new request. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball

mmc: queue: add a second mmc queue request member

2011-07-20T21:21:15Z

Add an additional mmc queue request instance to make way for two active block requests. One request may be active while the other request is being prepared. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball

mmc: block: move error path in issue_rw_rq to a separate function.

2011-07-20T21:21:14Z

Break out code without functional changes. This simplifies the code and makes way for handling two parallel requests. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball

mmc: block: add a block request prepare function

2011-07-20T21:21:13Z

Break out code from mmc_blk_issue_rw_rq to create a block request prepare function. This doesn't change any functionallity. This helps when handling more than one active block request. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball

mmc: block: add member in mmc queue struct to hold request data

2011-07-20T21:21:13Z

The way the request data is organized in the mmc queue struct, it only allows processing of one request at a time. This patch adds a new struct to hold mmc queue request data such as sg list, request, blk request and bounce buffers, and updates any functions depending on the mmc queue struct. This prepares for using multiple active requests in one mmc queue. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball

mmc: mmc_test: test to measure how sg_len affect performance

2011-07-20T21:21:12Z

Add a test that measures how the mmc bandwidth depends on the numbers of sg elements in the sg list. The transfer size if fixed and sg length goes from a few up to 512. The purpose is to measure overhead caused by multiple sg elements. Signed-off-by: Per Forlin Acked-by: Kyungmin Park Acked-by: Arnd Bergmann Reviewed-by: Venkatraman S Tested-by: Sourav Poddar Tested-by: Linus Walleij Signed-off-by: Chris Ball