X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.c;h=8c059df627294f3607e2e1bae00a6f2c571451fb;hp=5673d9ef690cc8e8c6d6bbe31dccc5fb3cc937ba;hb=3c9b60c1fb144950ca51220ffa18f485672c3ba6;hpb=56f9498d8588d42df2a41a7eb7ebcffef013a339

diff --git a/fio.c b/fio.c
index 5673d9ef..8c059df6 100644
--- a/fio.c
+++ b/fio.c
@@ -4,10 +4,12 @@
  * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
  * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
  *
+ * The license below covers all files distributed with fio unless otherwise
+ * noted in the file itself.
+ *
  *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -43,9 +45,7 @@ int groupid = 0;
 int thread_number = 0;
 int shm_id = 0;
 int temp_stall_ts;
-char *fio_inst_prefix = _INST_PREFIX;
-
-#define should_fsync(td)	((td_write(td) || td_rw(td)) && (!(td)->odirect || (td)->override_sync))
+const char *fio_inst_prefix = _INST_PREFIX;
 
 static volatile int startup_sem;
 
@@ -195,6 +195,50 @@ static void cleanup_pending_aio(struct thread_data *td)
 	}
 }
 
+/*
+ * Helper to handle the final sync of a file. Works just like the normal
+ * io path, just does everything sync.
+ */
+static int fio_io_sync(struct thread_data *td, struct fio_file *f)
+{
+	struct io_u *io_u = __get_io_u(td);
+	struct io_completion_data icd;
+	int ret;
+
+	if (!io_u)
+		return 1;
+
+	io_u->ddir = DDIR_SYNC;
+	io_u->file = f;
+
+	if (td_io_prep(td, io_u)) {
+		put_io_u(td, io_u);
+		return 1;
+	}
+
+	ret = td_io_queue(td, io_u);
+	if (ret) {
+		td_verror(td, io_u->error);
+		put_io_u(td, io_u);
+		return 1;
+	}
+
+	ret = td_io_getevents(td, 1, td->cur_depth, NULL);
+	if (ret < 0) {
+		td_verror(td, ret);
+		return 1;
+	}
+
+	icd.nr = ret;
+	ios_completed(td, &icd);
+	if (icd.error) {
+		td_verror(td, icd.error);
+		return 1;
+	}
+
+	return 0;
+}
+
 /*
  * The main verify engine. Runs over the writes we previusly submitted,
  * reads the blocks back in, and checks the crc/md5 of the data.
@@ -212,7 +256,7 @@ void do_verify(struct thread_data *td)
 	 * read from disk.
 	 */
 	for_each_file(td, f, i) {
-		td_io_sync(td, f);
+		fio_io_sync(td, f);
 		file_invalidate_cache(td, f);
 	}
 
@@ -248,8 +292,8 @@ void do_verify(struct thread_data *td)
 
 		ret = td_io_queue(td, io_u);
 		if (ret) {
+			td_verror(td, io_u->error);
 			put_io_u(td, io_u);
-			td_verror(td, ret);
 			break;
 		}
 
@@ -355,8 +399,8 @@ static void do_io(struct thread_data *td)
 
 		ret = td_io_queue(td, io_u);
 		if (ret) {
+			td_verror(td, io_u->error);
 			put_io_u(td, io_u);
-			td_verror(td, ret);
 			break;
 		}
 
@@ -372,7 +416,7 @@ static void do_io(struct thread_data *td)
 
 		ret = td_io_getevents(td, min_evts, td->cur_depth, timeout);
 		if (ret < 0) {
-			td_verror(td, -ret);
+			td_verror(td, ret);
 			break;
 		} else if (!ret)
 			continue;
@@ -392,7 +436,7 @@ static void do_io(struct thread_data *td)
 		gettimeofday(&e, NULL);
 		usec = utime_since(&s, &e);
 
-		rate_throttle(td, usec, icd.bytes_done[td->ddir]);
+		rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir);
 
 		if (check_min_rate(td, &e)) {
 			if (rate_quit)
@@ -406,10 +450,6 @@ static void do_io(struct thread_data *td)
 
 		if (td->thinktime)
 			usec_sleep(td, td->thinktime);
-
-		if (should_fsync(td) && td->fsync_blocks &&
-		    (td->io_blocks[DDIR_WRITE] % td->fsync_blocks) == 0)
-			td_io_sync(td, f);
 	}
 
 	if (!ret) {
@@ -419,7 +459,7 @@ static void do_io(struct thread_data *td)
 		if (should_fsync(td) && td->end_fsync) {
 			td_set_runstate(td, TD_FSYNCING);
 			for_each_file(td, f, i)
-				td_io_sync(td, f);
+				fio_io_sync(td, f);
 		}
 	}
 }
@@ -439,9 +479,23 @@ static void cleanup_io_u(struct thread_data *td)
 	free_io_mem(td);
 }
 
+/*
+ * "randomly" fill the buffer contents
+ */
+static void fill_rand_buf(struct io_u *io_u, int max_bs)
+{
+	int *ptr = io_u->buf;
+
+	while ((void *) ptr - io_u->buf < max_bs) {
+		*ptr = rand() * 0x9e370001;
+		ptr++;
+	}
+}
+
 static int init_io_u(struct thread_data *td)
 {
 	struct io_u *io_u;
+	unsigned int max_bs;
 	int i, max_units;
 	char *p;
 
@@ -453,7 +507,8 @@ static int init_io_u(struct thread_data *td)
 	else
 		max_units = td->iodepth;
 
-	td->orig_buffer_size = td->max_bs * max_units + MASK;
+	max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]);
+	td->orig_buffer_size = max_bs * max_units + MASK;
 
 	if (allocate_io_mem(td))
 		return 1;
@@ -464,7 +519,10 @@ static int init_io_u(struct thread_data *td)
 		memset(io_u, 0, sizeof(*io_u));
 		INIT_LIST_HEAD(&io_u->list);
 
-		io_u->buf = p + td->max_bs * i;
+		io_u->buf = p + max_bs * i;
+		if (td_write(td) || td_rw(td))
+			fill_rand_buf(io_u, max_bs);
+
 		io_u->index = i;
 		list_add(&io_u->list, &td->io_u_freelist);
 	}
@@ -478,6 +536,9 @@ static int switch_ioscheduler(struct thread_data *td)
 	FILE *f;
 	int ret;
 
+	if (td->io_ops->flags & FIO_CPUIO)
+		return 0;
+
 	sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
 
 	f = fopen(tmp, "r+");
@@ -646,7 +707,7 @@ static void *thread_main(void *data)
 		finish_log(td, td->slat_log, "slat");
 	if (td->clat_log)
 		finish_log(td, td->clat_log, "clat");
-	if (td->write_iolog)
+	if (td->write_iolog_file)
 		write_iolog_close(td);
 	if (td->exec_postrun)
 		system(td->exec_postrun);