diff options
Diffstat (limited to 'drivers/gpu/drm/v3d/v3d_drv.c')
| -rw-r--r-- | drivers/gpu/drm/v3d/v3d_drv.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index 2ec359ed2def..28b7ddce7747 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -121,6 +121,7 @@ v3d_open(struct drm_device *dev, struct drm_file *file) 1, NULL); memset(&v3d_priv->stats[i], 0, sizeof(v3d_priv->stats[i])); + seqcount_init(&v3d_priv->stats[i].lock); } v3d_perfmon_open_file(v3d_priv); @@ -145,10 +146,15 @@ v3d_postclose(struct drm_device *dev, struct drm_file *file) void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp, u64 *active_runtime, u64 *jobs_completed) { - *active_runtime = stats->enabled_ns; - if (stats->start_ns) - *active_runtime += timestamp - stats->start_ns; - *jobs_completed = stats->jobs_completed; + unsigned int seq; + + do { + seq = read_seqcount_begin(&stats->lock); + *active_runtime = stats->enabled_ns; + if (stats->start_ns) + *active_runtime += timestamp - stats->start_ns; + *jobs_completed = stats->jobs_completed; + } while (read_seqcount_retry(&stats->lock, seq)); } static void v3d_show_fdinfo(struct drm_printer *p, struct drm_file *file) |