X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=ioengines.c;h=b89a121b4526706cff19017b80ad2328a8687581;hp=e8ed871d2d96d641014cbd79e7e4df27c6b472a3;hb=23a8e176c3725f3640eaaf31a0a4c7497366c40f;hpb=de890a1e48d40238dac69f302708dde8719de240

diff --git a/ioengines.c b/ioengines.c
index e8ed871d..b89a121b 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -49,10 +49,6 @@ static int check_engine_ops(struct ioengine_ops *ops)
 		log_err("%s: no getevents handler\n", ops->name);
 		return 1;
 	}
-	if (!ops->queue) {
-		log_err("%s: no queue handler\n", ops->name);
-		return 1;
-	}
 
 	return 0;
 }
@@ -104,7 +100,23 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
 	 * Unlike the included modules, external engines should have a
 	 * non-static ioengine structure that we can reference.
 	 */
-	ops = dlsym(dlhandle, "ioengine");
+	ops = dlsym(dlhandle, engine_lib);
+	if (!ops)
+		ops = dlsym(dlhandle, "ioengine");
+
+	/*
+	 * For some external engines (like C++ ones) it is not that trivial
+	 * to provide a non-static ionengine structure that we can reference.
+	 * Instead we call a method which allocates the required ioengine
+	 * structure.
+	 */
+	if (!ops) {
+		get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine");
+
+		if (get_ioengine)
+			get_ioengine(&ops);
+	}
+
 	if (!ops) {
 		td_vmsg(td, -1, dlerror(), "dlsym");
 		dlclose(dlhandle);
@@ -204,10 +216,20 @@ int td_io_prep(struct thread_data *td, struct io_u *io_u)
 }
 
 int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
-		    struct timespec *t)
+		    const struct timespec *t)
 {
 	int r = 0;
 
+	/*
+	 * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ,
+	 * server side gets a message from the client
+	 * side that the task is finished, and
+	 * td->done is set to 1 after td_io_commit(). In this case,
+	 * there is no need to reap complete event in server side.
+	 */
+	if (td->done)
+		return 0;
+
 	if (min > 0 && td->io_ops->commit) {
 		r = td->io_ops->commit(td);
 		if (r < 0)
@@ -222,9 +244,14 @@ int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
 	if (max && td->io_ops->getevents)
 		r = td->io_ops->getevents(td, min, max, t);
 out:
-	if (r >= 0)
+	if (r >= 0) {
+		/*
+		 * Reflect that our submitted requests were retrieved with
+		 * whatever OS async calls are in the underlying engine.
+		 */
+		td->io_u_in_flight -= r;
 		io_u_mark_complete(td, r);
-	else
+	} else
 		td_verror(td, r, "get_events");
 
 	dprint(FD_IO, "getevents: %d\n", r);
@@ -233,16 +260,23 @@ out:
 
 int td_io_queue(struct thread_data *td, struct io_u *io_u)
 {
+	const enum fio_ddir ddir = acct_ddir(io_u);
+	unsigned long buflen = io_u->xfer_buflen;
 	int ret;
 
 	dprint_io_u(io_u, "queue");
 	fio_ro_check(td, io_u);
 
 	assert((io_u->flags & IO_U_F_FLIGHT) == 0);
-	io_u->flags |= IO_U_F_FLIGHT;
+	io_u_set(io_u, IO_U_F_FLIGHT);
 
 	assert(fio_file_open(io_u->file));
 
+	/*
+	 * If using a write iolog, store this entry.
+	 */
+	log_io_u(td, io_u);
+
 	io_u->error = 0;
 	io_u->resid = 0;
 
@@ -258,13 +292,29 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 					sizeof(struct timeval));
 	}
 
-	if (ddir_rw(io_u->ddir))
-		td->io_issues[io_u->ddir]++;
+	if (ddir_rw(ddir)) {
+		td->io_issues[ddir]++;
+		td->io_issue_bytes[ddir] += buflen;
+		td->rate_io_issue_bytes[ddir] += buflen;
+	}
 
 	ret = td->io_ops->queue(td, io_u);
 
 	unlock_file(td, io_u->file);
 
+	if (ret == FIO_Q_BUSY && ddir_rw(ddir)) {
+		td->io_issues[ddir]--;
+		td->io_issue_bytes[ddir] -= buflen;
+		td->rate_io_issue_bytes[ddir] -= buflen;
+	}
+
+	/*
+	 * If an error was seen and the io engine didn't propagate it
+	 * back to 'td', do so.
+	 */
+	if (io_u->error && !td->error)
+		td_verror(td, io_u->error, "td_io_queue");
+
 	/*
 	 * Add warning for O_DIRECT so that users have an easier time
 	 * spotting potentially bad alignment. If this triggers for the first
@@ -273,11 +323,13 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 	 */
 	if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 &&
 	    td->o.odirect) {
+
 		log_info("fio: first direct IO errored. File system may not "
-			 "support direct IO, or iomem_align= is bad.\n");
+			 "support direct IO, or iomem_align= is bad. Try "
+			 "setting direct=0.\n");
 	}
 
-	if (!td->io_ops->commit) {
+	if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) {
 		io_u_mark_submit(td, 1);
 		io_u_mark_complete(td, 1);
 	}
@@ -286,15 +338,14 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 		if (ddir_rw(io_u->ddir)) {
 			io_u_mark_depth(td, 1);
 			td->ts.total_io_u[io_u->ddir]++;
-		} else if (io_u->ddir == DDIR_TRIM)
-			td->ts.total_io_u[2]++;
+		}
 	} else if (ret == FIO_Q_QUEUED) {
 		int r;
 
-		if (ddir_rw(io_u->ddir)) {
-			td->io_u_queued++;
+		td->io_u_queued++;
+
+		if (ddir_rw(io_u->ddir))
 			td->ts.total_io_u[io_u->ddir]++;
-		}
 
 		if (td->io_u_queued >= td->o.iodepth_batch) {
 			r = td_io_commit(td);
@@ -332,6 +383,9 @@ int td_io_init(struct thread_data *td)
 			td->error = ret;
 	}
 
+	if (!ret && (td->io_ops->flags & FIO_NOIO))
+		td->flags |= TD_F_NOIO;
+
 	return ret;
 }
 
@@ -345,7 +399,6 @@ int td_io_commit(struct thread_data *td)
 		return 0;
 
 	io_u_mark_depth(td, td->io_u_queued);
-	td->io_u_queued = 0;
 
 	if (td->io_ops->commit) {
 		ret = td->io_ops->commit(td);
@@ -353,6 +406,12 @@ int td_io_commit(struct thread_data *td)
 			td_verror(td, -ret, "io commit");
 	}
 
+	/*
+	 * Reflect that events were submitted as async IO requests.
+	 */
+	td->io_u_in_flight += td->io_u_queued;
+	td->io_u_queued = 0;
+
 	return 0;
 }
 
@@ -375,7 +434,7 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 		return 1;
 	}
 
-	fio_file_reset(f);
+	fio_file_reset(td, f);
 	fio_file_set_open(f);
 	fio_file_clear_closing(f);
 	disk_util_inc(f->du);
@@ -410,6 +469,17 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 			goto err;
 		}
 	}
+#ifdef FIO_HAVE_STREAMID
+	if (td->o.fadvise_stream &&
+	    (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) {
+		off_t stream = td->o.fadvise_stream;
+
+		if (posix_fadvise(f->fd, stream, f->io_size, POSIX_FADV_STREAMID) < 0) {
+			td_verror(td, errno, "fadvise streamid");
+			goto err;
+		}
+	}
+#endif
 
 #ifdef FIO_OS_DIRECTIO
 	/*
@@ -448,11 +518,21 @@ int td_io_close_file(struct thread_data *td, struct fio_file *f)
 	fio_file_set_closing(f);
 
 	disk_util_dec(f->du);
-	unlock_file_all(td, f);
+
+	if (td->o.file_lock_mode != FILE_LOCK_NONE)
+		unlock_file_all(td, f);
 
 	return put_file(td, f);
 }
 
+int td_io_unlink_file(struct thread_data *td, struct fio_file *f)
+{
+	if (td->io_ops->unlink_file)
+		return td->io_ops->unlink_file(td, f);
+	else
+		return unlink(f->file_name);
+}
+
 int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
 {
 	if (!td->io_ops->get_file_size)
@@ -461,7 +541,8 @@ int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
 	return td->io_ops->get_file_size(td, f);
 }
 
-static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
+static int do_sync_file_range(const struct thread_data *td,
+			      struct fio_file *f)
 {
 	off64_t offset, nbytes;
 
@@ -474,14 +555,14 @@ static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
 	return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range);
 }
 
-int do_io_u_sync(struct thread_data *td, struct io_u *io_u)
+int do_io_u_sync(const struct thread_data *td, struct io_u *io_u)
 {
 	int ret;
 
 	if (io_u->ddir == DDIR_SYNC) {
 		ret = fsync(io_u->file->fd);
 	} else if (io_u->ddir == DDIR_DATASYNC) {
-#ifdef FIO_HAVE_FDATASYNC
+#ifdef CONFIG_FDATASYNC
 		ret = fdatasync(io_u->file->fd);
 #else
 		ret = io_u->xfer_buflen;
@@ -500,7 +581,7 @@ int do_io_u_sync(struct thread_data *td, struct io_u *io_u)
 	return ret;
 }
 
-int do_io_u_trim(struct thread_data *td, struct io_u *io_u)
+int do_io_u_trim(const struct thread_data *td, struct io_u *io_u)
 {
 #ifndef FIO_HAVE_TRIM
 	io_u->error = EINVAL;
@@ -511,7 +592,7 @@ int do_io_u_trim(struct thread_data *td, struct io_u *io_u)
 
 	ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen);
 	if (!ret)
-		return io_u->xfer_buflen;;
+		return io_u->xfer_buflen;
 
 	io_u->error = ret;
 	return 0;