t/io_uring: add switch -O for O_DIRECT vs buffered

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

diff --git a/t/io_uring.c b/t/io_uring.c
index aed6fdbd0627a2b69dc53238b40e301abd66466a..0acbf0b402b3602b63bf429de8c194093f0a0ea0 100644 (file)
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -554,9 +554,10 @@ static void usage(char *argv, int status)
                " -B <bool> : Fixed buffers, default %d\n"
                " -F <bool> : Register files, default %d\n"
                " -n <int>  : Number of threads, default %d\n"
+               " -O <bool> : Use O_DIRECT, default %d\n"
                " -N <bool> : Perform just no-op requests, default %d\n",
                argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled,
-               fixedbufs, register_files, nthreads, do_nop);
+               fixedbufs, register_files, nthreads, !buffered, do_nop);
        exit(status);
 }
 
@@ -572,7 +573,7 @@ int main(int argc, char *argv[])
        if (!do_nop && argc < 2)
                usage(argv[0], 1);
 
-       while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:h?")) != -1) {
+       while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:O:h?")) != -1) {
                switch (opt) {
                case 'd':
                        depth = atoi(optarg);
@@ -605,6 +606,9 @@ int main(int argc, char *argv[])
                case 'N':
                        do_nop = !!atoi(optarg);
                        break;
+               case 'O':
+                       buffered = !atoi(optarg);
+                       break;
                case 'h':
                case '?':
                default: