#include "../optgroup.h"
#include "../lib/memalign.h"
#include "../lib/fls.h"
+#include "../lib/roundup.h"
#ifdef ARCH_HAVE_IOURING
unsigned iodepth;
bool ioprio_class_set;
bool ioprio_set;
+ int prepped;
struct ioring_mmap mmap[3];
};
unsigned int nonvectored;
unsigned int uncached;
unsigned int nowait;
+ unsigned int force_async;
};
static const int ddir_to_op[2][2] = {
.lname = "Non-vectored",
.type = FIO_OPT_INT,
.off1 = offsetof(struct ioring_options, nonvectored),
+ .def = "-1",
.help = "Use non-vectored read/write commands",
.category = FIO_OPT_C_ENGINE,
.group = FIO_OPT_G_IOURING,
.category = FIO_OPT_C_ENGINE,
.group = FIO_OPT_G_IOURING,
},
+ {
+ .name = "force_async",
+ .lname = "Force async",
+ .type = FIO_OPT_INT,
+ .off1 = offsetof(struct ioring_options, force_async),
+ .help = "Set IOSQE_ASYNC every N requests",
+ .category = FIO_OPT_C_ENGINE,
+ .group = FIO_OPT_G_IOURING,
+ },
{
.name = NULL,
},
sqe = &ld->sqes[io_u->index];
- /* zero out fields not used in this submission */
- memset(sqe, 0, sizeof(*sqe));
-
if (o->registerfiles) {
sqe->fd = f->engine_pos;
sqe->flags = IOSQE_FIXED_FILE;
sqe->len = io_u->xfer_buflen;
sqe->buf_index = io_u->index;
} else {
+ struct iovec *iov = &ld->iovecs[io_u->index];
+
+ /*
+ * Update based on actual io_u, requeue could have
+ * adjusted these
+ */
+ iov->iov_base = io_u->xfer_buf;
+ iov->iov_len = io_u->xfer_buflen;
+
sqe->opcode = ddir_to_op[io_u->ddir][!!o->nonvectored];
if (o->nonvectored) {
- sqe->addr = (unsigned long)
- ld->iovecs[io_u->index].iov_base;
- sqe->len = ld->iovecs[io_u->index].iov_len;
+ sqe->addr = (unsigned long) iov->iov_base;
+ sqe->len = iov->iov_len;
} else {
- sqe->addr = (unsigned long) &ld->iovecs[io_u->index];
+ sqe->addr = (unsigned long) iov;
sqe->len = 1;
}
}
if (ld->ioprio_set)
sqe->ioprio |= td->o.ioprio;
sqe->off = io_u->offset;
+ sqe->rw_flags = 0;
} else if (ddir_sync(io_u->ddir)) {
+ sqe->ioprio = 0;
if (io_u->ddir == DDIR_SYNC_FILE_RANGE) {
sqe->off = f->first_write;
sqe->len = f->last_write - f->first_write;
sqe->sync_range_flags = td->o.sync_file_range;
sqe->opcode = IORING_OP_SYNC_FILE_RANGE;
} else {
+ sqe->off = 0;
+ sqe->addr = 0;
+ sqe->len = 0;
if (io_u->ddir == DDIR_DATASYNC)
sqe->fsync_flags |= IORING_FSYNC_DATASYNC;
sqe->opcode = IORING_OP_FSYNC;
}
}
+ if (o->force_async && ++ld->prepped == o->force_async) {
+ ld->prepped = 0;
+ sqe->flags |= IOSQE_ASYNC;
+ }
+
sqe->user_data = (unsigned long) io_u;
return 0;
}
head++;
} while (reaped + events < max);
- atomic_store_release(ring->head, head);
+ if (reaped)
+ atomic_store_release(ring->head, head);
+
return reaped;
}
*/
if (o->sqpoll_thread) {
struct io_sq_ring *ring = &ld->sq_ring;
+ unsigned flags;
- read_barrier();
- if (*ring->flags & IORING_SQ_NEED_WAKEUP)
+ flags = atomic_load_acquire(ring->flags);
+ if (flags & IORING_SQ_NEED_WAKEUP)
io_uring_enter(ld, ld->queued, 0,
IORING_ENTER_SQ_WAKEUP);
ld->queued = 0;
{
int i;
- for (i = 0; i < ARRAY_SIZE(ld->mmap); i++)
+ for (i = 0; i < FIO_ARRAY_SIZE(ld->mmap); i++)
munmap(ld->mmap[i].ptr, ld->mmap[i].len);
close(ld->ring_fd);
}
return 0;
}
+static void fio_ioring_probe(struct thread_data *td)
+{
+ struct ioring_data *ld = td->io_ops_data;
+ struct ioring_options *o = td->eo;
+ struct io_uring_probe *p;
+ int ret;
+
+ /* already set by user, don't touch */
+ if (o->nonvectored != -1)
+ return;
+
+ /* default to off, as that's always safe */
+ o->nonvectored = 0;
+
+ p = malloc(sizeof(*p) + 256 * sizeof(struct io_uring_probe_op));
+ if (!p)
+ return;
+
+ memset(p, 0, sizeof(*p) + 256 * sizeof(struct io_uring_probe_op));
+ ret = syscall(__NR_io_uring_register, ld->ring_fd,
+ IORING_REGISTER_PROBE, p, 256);
+ if (ret < 0)
+ goto out;
+
+ if (IORING_OP_WRITE > p->ops_len)
+ goto out;
+
+ if ((p->ops[IORING_OP_READ].flags & IO_URING_OP_SUPPORTED) &&
+ (p->ops[IORING_OP_WRITE].flags & IO_URING_OP_SUPPORTED))
+ o->nonvectored = 1;
+out:
+ free(p);
+}
+
static int fio_ioring_queue_init(struct thread_data *td)
{
struct ioring_data *ld = td->io_ops_data;
ld->ring_fd = ret;
- if (o->fixedbufs) {
- struct rlimit rlim = {
- .rlim_cur = RLIM_INFINITY,
- .rlim_max = RLIM_INFINITY,
- };
-
- if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0)
- return -1;
+ fio_ioring_probe(td);
+ if (o->fixedbufs) {
ret = syscall(__NR_io_uring_register, ld->ring_fd,
IORING_REGISTER_BUFFERS, ld->iovecs, depth);
if (ret < 0)
err = fio_ioring_queue_init(td);
if (err) {
- td_verror(td, errno, "io_queue_init");
+ int init_err = errno;
+
+ if (init_err == ENOSYS)
+ log_err("fio: your kernel doesn't support io_uring\n");
+ td_verror(td, init_err, "io_queue_init");
return 1;
}
+ for (i = 0; i < td->o.iodepth; i++) {
+ struct io_uring_sqe *sqe;
+
+ sqe = &ld->sqes[i];
+ memset(sqe, 0, sizeof(*sqe));
+ }
+
if (o->registerfiles) {
err = fio_ioring_register_files(td);
if (err) {
return 0;
}
-static unsigned roundup_pow2(unsigned depth)
-{
- return 1UL << __fls(depth - 1);
-}
-
static int fio_ioring_init(struct thread_data *td)
{
struct ioring_options *o = td->eo;
struct ioring_data *ld;
struct thread_options *to = &td->o;
+ if (to->io_submit_mode == IO_MODE_OFFLOAD) {
+ log_err("fio: io_submit_mode=offload is not compatible (or "
+ "useful) with io_uring\n");
+ return 1;
+ }
+
/* sqthread submission requires registered files */
if (o->sqpoll_thread)
o->registerfiles = 1;
static struct ioengine_ops ioengine = {
.name = "io_uring",
.version = FIO_IOOPS_VERSION,
- .flags = FIO_ASYNCIO_SYNC_TRIM,
+ .flags = FIO_ASYNCIO_SYNC_TRIM | FIO_NO_OFFLOAD,
.init = fio_ioring_init,
.post_init = fio_ioring_post_init,
.io_u_init = fio_ioring_io_u_init,
projects / fio.git / blobdiff