Add support for randomness of any IO direction

sequential_random used to be applied to all of the IO
directions, with no possibility of having different settings
for reads, writes, and trims. Now it supports setting each of
them individually.

By default, if you do:

sequential_random=50

it will still apply to all three. If you do:

sequential_random=10,90,80

you would get reads 10% random, writes 90% random, and trims
80% random.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 5 insertions, 3 deletions

diff --git a/fio.h b/fio.h
index 8c67fccb..e7d5c27c 100644
--- a/fio.h
+++ b/fio.h
@@ -82,7 +82,9 @@ enum {
 	FIO_RAND_FILE_SIZE_OFF,
 	FIO_RAND_TRIM_OFF,
 	FIO_RAND_BUF_OFF,
-	FIO_RAND_SEQ_RAND_OFF,
+	FIO_RAND_SEQ_RAND_READ_OFF,
+	FIO_RAND_SEQ_RAND_WRITE_OFF,
+	FIO_RAND_SEQ_RAND_TRIM_OFF,
 	FIO_RAND_NR_OFFS,
 };
 
@@ -261,8 +263,8 @@ struct thread_data {
 	 * rand/seq mixed workload state
 	 */
 	union {
-		os_random_state_t seq_rand_state;
-		struct frand_state __seq_rand_state;
+		os_random_state_t seq_rand_state[DDIR_RWDIR_CNT];
+		struct frand_state __seq_rand_state[DDIR_RWDIR_CNT];
 	};
 
 	/*