backend: fix comparison of 'ret' pointer

[fio.git] / backend.c

diff --git a/backend.c b/backend.c
index 698940791201dadf9b021145eca60dee5d04494c..dec0d55b0dbf3382cad2bfdfcfad9d4683d912a9 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -179,7 +179,7 @@ static int __check_min_rate(struct thread_data *td, struct timeval *now,
                if (spent < td->o.ratecycle)
                        return 0;
 
-               if (td->o.rate[ddir]) {
+               if (td->o.rate[ddir] || td->o.ratemin[ddir]) {
                        /*
                         * check bandwidth specified rate
                         */
@@ -220,6 +220,7 @@ static int __check_min_rate(struct thread_data *td, struct timeval *now,
                                        log_err("%s: min iops rate %u not met,"
                                                " got %lu\n", td->o.name,
                                                        rate_iops_min, rate);
+                                       return 1;
                                }
                        }
                }
@@ -539,7 +540,7 @@ sync_done:
                        *ret = ret2;
                break;
        default:
-               assert(ret < 0);
+               assert(*ret < 0);
                td_verror(td, -(*ret), "td_io_queue");
                break;
        }
@@ -762,6 +763,25 @@ static int io_complete_bytes_exceeded(struct thread_data *td)
        return bytes >= limit || exceeds_number_ios(td);
 }
 
+/*
+ * used to calculate the next io time for rate control
+ *
+ */
+static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
+{
+       uint64_t secs, remainder, bps, bytes;
+
+       assert(!(td->flags & TD_F_CHILD));
+       bytes = td->rate_io_issue_bytes[ddir];
+       bps = td->rate_bps[ddir];
+       if (bps) {
+               secs = bytes / bps;
+               remainder = bytes % bps;
+               return remainder * 1000000 / bps + secs * 1000000;
+       } else
+               return 0;
+}
+
 /*
  * Main IO worker function. It retrieves io_u's to process and queues
  * and reaps them, checking for rate and errors along the way.
@@ -891,10 +911,17 @@ static uint64_t do_io(struct thread_data *td)
                        if (td->error)
                                break;
                        ret = workqueue_enqueue(&td->io_wq, io_u);
+
+                       if (should_check_rate(td))
+                               td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
+
                } else {
                        ret = td_io_queue(td, io_u);
 
-                       if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 1, &comp_time))
+                       if (should_check_rate(td))
+                               td->rate_next_io_time[ddir] = usec_for_io(td, ddir);
+
+                       if (io_queue_event(td, io_u, &ret, ddir, &bytes_issued, 0, &comp_time))
                                break;
 
                        /*
@@ -1611,16 +1638,8 @@ static void *thread_main(void *data)
        td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
 
        if (td->o.verify_state_save && !(td->flags & TD_F_VSTATE_SAVED) &&
-           (td->o.verify != VERIFY_NONE && td_write(td))) {
-               struct all_io_list *state;
-               size_t sz;
-
-               state = get_all_io_list(td->thread_number, &sz);
-               if (state) {
-                       __verify_save_state(state, "local");
-                       free(state);
-               }
-       }
+           (td->o.verify != VERIFY_NONE && td_write(td)))
+               verify_save_state(td->thread_number);
 
        fio_unpin_memory(td);
 
@@ -1870,7 +1889,7 @@ void check_trigger_file(void)
                if (nr_clients)
                        fio_clients_send_trigger(trigger_remote_cmd);
                else {
-                       verify_save_state();
+                       verify_save_state(IO_LIST_ALL);
                        fio_terminate_threads(TERMINATE_ALL);
                        exec_trigger(trigger_cmd);
                }