Add locking around reads of td->io_blocks and io_byes.

This is present in add_bw/iops/lat_sample but absent from show_thread_status. Not certain if this is really necessary.

diff --git a/steadystate.c b/steadystate.c
index 1e7212f83ab5d40a0673b821dd04e2e423eba79f..e0dcc22e465c68f80bfeef71704415c0077cdfae 100644 (file)
--- a/steadystate.c
+++ b/steadystate.c
@@ -69,10 +69,12 @@ void steadystate_check()
                        if (utime_since(&td->epoch, &now) >= (ss->ramp_time + 1000000L))
                                ss->ramp_time_over = 1;
 
                        if (utime_since(&td->epoch, &now) >= (ss->ramp_time + 1000000L))
                                ss->ramp_time_over = 1;
 

+               td_io_u_lock(td);

                for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
                        td_iops += td->io_blocks[ddir];
                        td_bytes += td->io_bytes[ddir];
                }
                for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
                        td_iops += td->io_blocks[ddir];
                        td_bytes += td->io_bytes[ddir];
                }

+               td_io_u_unlock(td);

 
                rate_time = mtime_since(&ss->prev_time, &now);
                memcpy(&ss->prev_time, &now, sizeof(now));
 
                rate_time = mtime_since(&ss->prev_time, &now);
                memcpy(&ss->prev_time, &now, sizeof(now));