X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=backend.c;h=fd8184917325af84ac74b50a8967c1ba507a026f;hp=bc2e3eb50e37a501ae89f89dcac767f1023fa616;hb=a0e3e5a676dcc0b0399bf272250046d570fffa82;hpb=5bb79f69c2d9dc8542c25af96f040d1884230688

diff --git a/backend.c b/backend.c
index bc2e3eb5..fd818491 100644
--- a/backend.c
+++ b/backend.c
@@ -54,9 +54,9 @@
 #include "lib/getrusage.h"
 #include "idletime.h"
 #include "err.h"
-#include "lib/tp.h"
 #include "workqueue.h"
 #include "lib/mountcheck.h"
+#include "rate-submit.h"
 
 static pthread_t helper_thread;
 static pthread_mutex_t helper_lock;
@@ -520,6 +520,14 @@ sync_done:
 			if (*ret < 0)
 				break;
 		}
+
+		/*
+		 * when doing I/O (not when verifying),
+		 * check for any errors that are to be ignored
+		 */
+		if (!from_verify)
+			break;
+
 		return 0;
 	case FIO_Q_QUEUED:
 		/*
@@ -808,12 +816,15 @@ static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
  *
  * Returns number of bytes written and trimmed.
  */
-static uint64_t do_io(struct thread_data *td)
+static void do_io(struct thread_data *td, uint64_t *bytes_done)
 {
 	unsigned int i;
 	int ret = 0;
 	uint64_t total_bytes, bytes_issued = 0;
 
+	for (i = 0; i < DDIR_RWDIR_CNT; i++)
+		bytes_done[i] = td->bytes_done[i];
+
 	if (in_ramp_time(td))
 		td_set_runstate(td, TD_RAMP);
 	else
@@ -934,13 +945,10 @@ static uint64_t do_io(struct thread_data *td)
 			if (td->error)
 				break;
 
-			ret = workqueue_enqueue(&td->io_wq, &io_u->work);
-			if (ret)
-				ret = FIO_Q_QUEUED;
-			else
-				ret = FIO_Q_BUSY;
+			workqueue_enqueue(&td->io_wq, &io_u->work);
+			ret = FIO_Q_QUEUED;
 
-			if (ret == FIO_Q_QUEUED && ddir_rw(ddir)) {
+			if (ddir_rw(ddir)) {
 				td->io_issues[ddir]++;
 				td->io_issue_bytes[ddir] += blen;
 				td->rate_io_issue_bytes[ddir] += blen;
@@ -977,7 +985,7 @@ reap:
 
 		if (!in_ramp_time(td) && should_check_rate(td)) {
 			if (check_min_rate(td, &comp_time)) {
-				if (exitall_on_terminate)
+				if (exitall_on_terminate || td->o.exitall_error)
 					fio_terminate_threads(td->groupid);
 				td_verror(td, EIO, "check_min_rate");
 				break;
@@ -1049,7 +1057,8 @@ reap:
 	if (!ddir_rw_sum(td->this_io_bytes))
 		td->done = 1;
 
-	return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
+	for (i = 0; i < DDIR_RWDIR_CNT; i++)
+		bytes_done[i] = td->bytes_done[i] - bytes_done[i];
 }
 
 static void cleanup_io_u(struct thread_data *td)
@@ -1292,7 +1301,7 @@ static bool keep_running(struct thread_data *td)
 		if (diff < td_max_bs(td))
 			return false;
 
-		if (fio_files_done(td))
+		if (fio_files_done(td) && !td->o.io_limit)
 			return false;
 
 		return true;
@@ -1361,73 +1370,9 @@ static uint64_t do_dry_run(struct thread_data *td)
 	return td->bytes_done[DDIR_WRITE] + td->bytes_done[DDIR_TRIM];
 }
 
-static void io_workqueue_fn(struct thread_data *td, struct workqueue_work *work)
-{
-	struct io_u *io_u = container_of(work, struct io_u, work);
-	const enum fio_ddir ddir = io_u->ddir;
-	int ret;
-
-	dprint(FD_RATE, "io_u %p queued by %u\n", io_u, gettid());
-
-	io_u_set(io_u, IO_U_F_NO_FILE_PUT);
-
-	td->cur_depth++;
-
-	do {
-		ret = td_io_queue(td, io_u);
-		if (ret != FIO_Q_BUSY)
-			break;
-		ret = io_u_queued_complete(td, 1);
-		if (ret > 0)
-			td->cur_depth -= ret;
-		io_u_clear(io_u, IO_U_F_FLIGHT);
-	} while (1);
-
-	dprint(FD_RATE, "io_u %p ret %d by %u\n", io_u, ret, gettid());
-
-	io_queue_event(td, io_u, &ret, ddir, NULL, 0, NULL);
-
-	if (ret == FIO_Q_COMPLETED)
-		td->cur_depth--;
-	else if (ret == FIO_Q_QUEUED) {
-		unsigned int min_evts;
-
-		if (td->o.iodepth == 1)
-			min_evts = 1;
-		else
-			min_evts = 0;
-
-		ret = io_u_queued_complete(td, min_evts);
-		if (ret > 0)
-			td->cur_depth -= ret;
-	} else if (ret == FIO_Q_BUSY) {
-		ret = io_u_queued_complete(td, td->cur_depth);
-		if (ret > 0)
-			td->cur_depth -= ret;
-	}
-}
-
-static bool io_workqueue_pre_sleep_flush_fn(struct thread_data *td)
-{
-	if (td->io_u_queued || td->cur_depth || td->io_u_in_flight)
-		return true;
-
-	return false;
-}
-
-static void io_workqueue_pre_sleep_fn(struct thread_data *td)
-{
-	int ret;
-
-	ret = io_u_quiesce(td);
-	if (ret > 0)
-		td->cur_depth -= ret;
-}
-
-struct workqueue_ops rated_wq_ops = {
-	.fn			= io_workqueue_fn,
-	.pre_sleep_flush_fn	= io_workqueue_pre_sleep_flush_fn,
-	.pre_sleep_fn		= io_workqueue_pre_sleep_fn,
+struct fork_data {
+	struct thread_data *td;
+	struct sk_out *sk_out;
 };
 
 /*
@@ -1436,13 +1381,18 @@ struct workqueue_ops rated_wq_ops = {
  */
 static void *thread_main(void *data)
 {
+	struct fork_data *fd = data;
 	unsigned long long elapsed_us[DDIR_RWDIR_CNT] = { 0, };
-	struct thread_data *td = data;
+	struct thread_data *td = fd->td;
 	struct thread_options *o = &td->o;
+	struct sk_out *sk_out = fd->sk_out;
 	pthread_condattr_t attr;
 	int clear_state;
 	int ret;
 
+	sk_out_assign(sk_out);
+	free(fd);
+
 	if (!o->use_thread) {
 		setsid();
 		td->pid = getpid();
@@ -1622,13 +1572,12 @@ static void *thread_main(void *data)
 			goto err;
 	}
 
-	if (td->flags & TD_F_COMPRESS_LOG)
-		tp_init(&td->tp_data);
+	if (iolog_compress_init(td, sk_out))
+		goto err;
 
 	fio_verify_init(td);
 
-	if ((o->io_submit_mode == IO_MODE_OFFLOAD) &&
-	    workqueue_init(td, &td->io_wq, &rated_wq_ops, td->o.iodepth))
+	if (rate_submit_init(td, sk_out))
 		goto err;
 
 	fio_gettime(&td->epoch, NULL);
@@ -1660,8 +1609,19 @@ static void *thread_main(void *data)
 
 		if (td->o.verify_only && (td_write(td) || td_rw(td)))
 			verify_bytes = do_dry_run(td);
-		else
-			verify_bytes = do_io(td);
+		else {
+			uint64_t bytes_done[DDIR_RWDIR_CNT];
+
+			do_io(td, bytes_done);
+
+			if (!ddir_rw_sum(bytes_done)) {
+				fio_mark_td_terminate(td);
+				verify_bytes = 0;
+			} else {
+				verify_bytes = bytes_done[DDIR_WRITE] +
+						bytes_done[DDIR_TRIM];
+			}
+		}
 
 		clear_state = 1;
 
@@ -1726,16 +1686,13 @@ static void *thread_main(void *data)
 
 	fio_writeout_logs(td);
 
-	if (o->io_submit_mode == IO_MODE_OFFLOAD)
-		workqueue_exit(&td->io_wq);
-
-	if (td->flags & TD_F_COMPRESS_LOG)
-		tp_exit(&td->tp_data);
+	iolog_compress_exit(td);
+	rate_submit_exit(td);
 
 	if (o->exec_postrun)
 		exec_string(o, o->exec_postrun, (const char *)"postrun");
 
-	if (exitall_on_terminate)
+	if (exitall_on_terminate || (o->exitall_error && td->error))
 		fio_terminate_threads(td->groupid);
 
 err:
@@ -1775,6 +1732,7 @@ err:
 	 */
 	check_update_rusage(td);
 
+	sk_out_drop();
 	return (void *) (uintptr_t) td->error;
 }
 
@@ -1783,9 +1741,9 @@ err:
  * We cannot pass the td data into a forked process, so attach the td and
  * pass it to the thread worker.
  */
-static int fork_main(int shmid, int offset)
+static int fork_main(struct sk_out *sk_out, int shmid, int offset)
 {
-	struct thread_data *td;
+	struct fork_data *fd;
 	void *data, *ret;
 
 #if !defined(__hpux) && !defined(CONFIG_NO_SHM)
@@ -1803,8 +1761,10 @@ static int fork_main(int shmid, int offset)
 	data = threads;
 #endif
 
-	td = data + offset * sizeof(struct thread_data);
-	ret = thread_main(td);
+	fd = calloc(1, sizeof(*fd));
+	fd->td = data + offset * sizeof(struct thread_data);
+	fd->sk_out = sk_out;
+	ret = thread_main(fd);
 	shmdt(data);
 	return (int) (uintptr_t) ret;
 }
@@ -2026,10 +1986,36 @@ mounted:
 	return true;
 }
 
+static bool waitee_running(struct thread_data *me)
+{
+	const char *waitee = me->o.wait_for;
+	const char *self = me->o.name;
+	struct thread_data *td;
+	int i;
+
+	if (!waitee)
+		return false;
+
+	for_each_td(td, i) {
+		if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
+			continue;
+
+		if (td->runstate < TD_EXITED) {
+			dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
+					self, td->o.name,
+					runstate_to_name(td->runstate));
+			return true;
+		}
+	}
+
+	dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
+	return false;
+}
+
 /*
  * Main function for kicking off and reaping jobs, as needed.
  */
-static void run_threads(void)
+static void run_threads(struct sk_out *sk_out)
 {
 	struct thread_data *td;
 	unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
@@ -2149,6 +2135,12 @@ reap:
 				break;
 			}
 
+			if (waitee_running(td)) {
+				dprint(FD_PROCESS, "%s: waiting for %s\n",
+						td->o.name, td->o.wait_for);
+				continue;
+			}
+
 			init_disk_util(td);
 
 			td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
@@ -2163,14 +2155,20 @@ reap:
 			nr_started++;
 
 			if (td->o.use_thread) {
+				struct fork_data *fd;
 				int ret;
 
+				fd = calloc(1, sizeof(*fd));
+				fd->td = td;
+				fd->sk_out = sk_out;
+
 				dprint(FD_PROCESS, "will pthread_create\n");
 				ret = pthread_create(&td->thread, NULL,
-							thread_main, td);
+							thread_main, fd);
 				if (ret) {
 					log_err("pthread_create: %s\n",
 							strerror(ret));
+					free(fd);
 					nr_started--;
 					break;
 				}
@@ -2183,14 +2181,14 @@ reap:
 				dprint(FD_PROCESS, "will fork\n");
 				pid = fork();
 				if (!pid) {
-					int ret = fork_main(shm_id, i);
+					int ret = fork_main(sk_out, shm_id, i);
 
 					_exit(ret);
 				} else if (i == fio_debug_jobno)
 					*fio_debug_jobp = pid;
 			}
 			dprint(FD_MUTEX, "wait on startup_mutex\n");
-			if (fio_mutex_down_timeout(startup_mutex, 10)) {
+			if (fio_mutex_down_timeout(startup_mutex, 10000)) {
 				log_err("fio: job startup hung? exiting.\n");
 				fio_terminate_threads(TERMINATE_ALL);
 				fio_abort = 1;
@@ -2293,8 +2291,11 @@ static void free_disk_util(void)
 
 static void *helper_thread_main(void *data)
 {
+	struct sk_out *sk_out = data;
 	int ret = 0;
 
+	sk_out_assign(sk_out);
+
 	fio_mutex_up(startup_mutex);
 
 	while (!ret) {
@@ -2325,10 +2326,11 @@ static void *helper_thread_main(void *data)
 			print_thread_status();
 	}
 
+	sk_out_drop();
 	return NULL;
 }
 
-static int create_helper_thread(void)
+static int create_helper_thread(struct sk_out *sk_out)
 {
 	int ret;
 
@@ -2337,7 +2339,7 @@ static int create_helper_thread(void)
 	pthread_cond_init(&helper_cond, NULL);
 	pthread_mutex_init(&helper_lock, NULL);
 
-	ret = pthread_create(&helper_thread, NULL, helper_thread_main, NULL);
+	ret = pthread_create(&helper_thread, NULL, helper_thread_main, sk_out);
 	if (ret) {
 		log_err("Can't create helper thread: %s\n", strerror(ret));
 		return 1;
@@ -2349,7 +2351,7 @@ static int create_helper_thread(void)
 	return 0;
 }
 
-int fio_backend(void)
+int fio_backend(struct sk_out *sk_out)
 {
 	struct thread_data *td;
 	int i;
@@ -2379,12 +2381,12 @@ int fio_backend(void)
 
 	set_genesis_time();
 	stat_init();
-	create_helper_thread();
+	create_helper_thread(sk_out);
 
 	cgroup_list = smalloc(sizeof(*cgroup_list));
 	INIT_FLIST_HEAD(cgroup_list);
 
-	run_threads();
+	run_threads(sk_out);
 
 	wait_for_helper_thread_exit();