We plan to expand upon the number of available statuses for when we
pretty-print the requests along the timelines, and so need a new set of
flags. We have settled upon:
Unready [U]
- initial status after being submitted, the request is not
ready for execution as it is waiting for external fences
Ready [R]
- all fences the request was waiting on have been signaled,
and the request is now ready for execution and will be
in a backend queue
- a ready request may still need to wait on semaphores
[internal fences]
Ready/virtual [V]
- same as ready, but queued over multiple backends
Executing [E]
- the request has been transferred from the backend queue and
submitted for execution on HW
- a completed request may still be regarded as executing, its
status may not be updated until it is retired and removed
from the lists
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 4 ++--
drivers/gpu/drm/i915/i915_request.c | 30 +++++++++++++++++++++++++++++
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c
b/drivers/gpu/drm/i915/gt/intel_lrc.c
index b6ab1161942a..3a1b25c0e43e 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -6025,7 +6025,7 @@ void intel_execlists_show_requests(struct intel_engine_cs
*engine,
priolist_for_each_request(rq, p, i) {
if (count++ < max - 1)
- show_request(m, rq, "\t\tQ ");
+ show_request(m, rq, "\t\tR ");
else
last = rq;
}
@@ -6036,7 +6036,7 @@ void intel_execlists_show_requests(struct intel_engine_cs
*engine,
"\t\t...skipping %d queued requests...\n",
count - max);
}
- show_request(m, last, "\t\tQ ");
+ show_request(m, last, "\t\tR ");
}
last = NULL;
diff --git a/drivers/gpu/drm/i915/i915_request.c
b/drivers/gpu/drm/i915/i915_request.c
index 673991718ae6..d3610418e9ae 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -1875,6 +1875,36 @@ void i915_request_show(struct drm_printer *m,
char buf[80] = "";
int x = 0;
+ /*
+ * Often the prefix is used to show the queue status,
+ * in which case we use the following flags:
+ *
+ * Unready [U]
+ * - initial status upon being submitted by the user
+ *
+ * - the request is not ready for execution as it is waiting
+ * for external fences
+ *
+ * Ready [R]
+ * - all fences the request was waiting on have been signaled,
+ * and the request is now ready for execution and will be
+ * in a backend queue
+ *
+ * - a ready request may still need to wait on semaphores
+ * [internal fences]
+ *
+ * Ready/virtual [V]
+ * - same as ready, but queued over multiple backends
+ *
+ * Executing [E]
+ * - the request has been transferred from the backend queue and
+ * submitted for execution on HW
+ *
+ * - a completed request may still be regarded as executing, its
+ * status may not be updated until it is retired and removed
+ * from the lists
+ */
+
x = print_sched_attr(&rq->sched.attr, buf, x, sizeof(buf));
drm_printf(m, "%s %llx:%lld%s%s %s @ %dms: %s\n",
--
2.20.1
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