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block: test-iosched: expose sector_range variable to user

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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: Lee Susman <lsusman@codeaurora.org>
This commit is contained in:
Lee Susman 2014-09-22 17:48:44 +03:00 committed by Gilad Broner
parent 8aeb623c2d
commit c3e06a66f4
2 changed files with 14 additions and 0 deletions
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8
block/test-iosched.c
View File

@ -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:

6
include/linux/test-iosched.h
View File

@ -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;