From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>

Stop displaying engine classes with no engines - it is not a huge problem
if they are shown, since the values will correctly be all zeroes, but it
does count as misleading.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Fixes: 055634e4b62f ("drm/i915: Expose client engine utilisation via fdinfo")
Cc: Umesh Nerlige Ramappa <umesh.nerlige.rama...@intel.com>
---
 drivers/gpu/drm/i915/i915_drm_client.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drm_client.c 
b/drivers/gpu/drm/i915/i915_drm_client.c
index 18d38cb59923..b09d1d386574 100644
--- a/drivers/gpu/drm/i915/i915_drm_client.c
+++ b/drivers/gpu/drm/i915/i915_drm_client.c
@@ -116,8 +116,9 @@ show_client_class(struct seq_file *m,
                total += busy_add(ctx, class);
        rcu_read_unlock();
 
-       seq_printf(m, "drm-engine-%s:\t%llu ns\n",
-                  uabi_class_names[class], total);
+       if (capacity)
+               seq_printf(m, "drm-engine-%s:\t%llu ns\n",
+                          uabi_class_names[class], total);
 
        if (capacity > 1)
                seq_printf(m, "drm-engine-capacity-%s:\t%u\n",
-- 
2.34.1

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