At present i915 does not fetch busyness information from GuC, resulting in incorrect busyness values in fdinfo. Because engine information is coupled with busyness in fdinfo, skip showing client engine information in fdinfo with GuC submission till fetching busyness is supported in the i915 GuC submission backend.
v2 (Daniele): Make commit title and description more precise Add FIXME with brief description at code change s/intel_guc_submission_is_used/intel_uc_uses_guc_submission/ Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/5564 Fixes: 055634e4b62f ("drm/i915: Expose client engine utilisation via fdinfo") Cc: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com Cc: Umesh Nerlige Ramappa <umesh.nerlige.rama...@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.di...@intel.com> --- drivers/gpu/drm/i915/i915_drm_client.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drm_client.c b/drivers/gpu/drm/i915/i915_drm_client.c index e539f6b23060..6d34065e845f 100644 --- a/drivers/gpu/drm/i915/i915_drm_client.c +++ b/drivers/gpu/drm/i915/i915_drm_client.c @@ -145,7 +145,11 @@ void i915_drm_client_fdinfo(struct seq_file *m, struct file *f) PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); seq_printf(m, "drm-client-id:\t%u\n", client->id); - if (GRAPHICS_VER(i915) < 8) + /* + * FIXME: temporarily skip showing client engine information with GuC submission + * till fetching engine busyness is implemented in the GuC submission backend + */ + if (GRAPHICS_VER(i915) < 8 || intel_uc_uses_guc_submission(&i915->gt0.uc)) return; for (i = 0; i < ARRAY_SIZE(uabi_class_names); i++) -- 2.34.1
