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Commit 3d71d76a authored by Lee Susman's avatar Lee Susman Committed by Matt Wagantall
Browse files

block: test-iosched: expose sector_range variable to user 



Expose "sector_range", which will indicate to the low-level driver
unit-tests the size (in sectors, starting from "start_sector") of the
address space in which they can perform I/O operations. This user-defined
variable can be used to change the address space size from the default
512MiB.

Change-Id: I515a6849eb39b78e653f4018993a2c8e64e2a77f
Signed-off-by: default avatarLee Susman <lsusman@codeaurora.org>
parent 9915df6b

block/test-iosched.c

+8 −0
Original line number Diff line number Diff line
@@ -911,6 +911,14 @@ static int test_debugfs_init(struct test_iosched *tios) 
	if (!tios->debug.start_sector)

		goto err;



	tios->debug.sector_range = debugfs_create_u32(

						"sector_range",

						S_IRUGO | S_IWUGO,

						tios->debug.debug_utils_root,

						&tios->sector_range);

	if (!tios->debug.sector_range)

		goto err;



	return 0;



err:

include/linux/test-iosched.h

+6 −0
Original line number Diff line number Diff line
@@ -80,6 +80,8 @@ enum req_unique_type { 
 * @debug_test_result:	Exposes the test result to the user

 *			space

 * @start_sector:	The start sector for read/write requests

 * @sector_range:	Range of the test, starting from start_sector

 *			(in sectors)

 */

struct test_debug {

	struct dentry *debug_root;
@@ -87,6 +89,7 @@ struct test_debug { 
	struct dentry *debug_tests_root;

	struct dentry *debug_test_result;

	struct dentry *start_sector;

	struct dentry *sector_range;

};



/**
@@ -193,6 +196,8 @@ struct blk_dev_test_type { 
 *			new BIOs.

 * @start_sector:	The address of the first sector that can

 *			be accessed by the test

 * @sector_range:	Range of the test, starting from start_sector

 *			(in sectors)

 * @wr_rd_next_req_id:	A unique ID to identify WRITE/READ

 *			request to ease the debugging of the

 *			test cases
@@ -226,6 +231,7 @@ struct test_iosched { 
	struct request_queue *req_q;

	int num_of_write_bios;

	u32 start_sector;

	u32 sector_range;

	int wr_rd_next_req_id;

	int unique_next_req_id;

	spinlock_t lock;