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drm/i915/execlists: Move the GEM_BUG_ON context matches CSB later 

Print out the current request/context before doing the GEM_BUG_ON, so
that we can inspect the values in the ftrace.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180221152301.9178-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-02-21 15:23:01 +00:00
parent 65cb8c0f04
commit e084039b58
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/i915/intel_lrc.c
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@ -863,14 +863,15 @@ static void execlists_submission_tasklet(unsigned long data)
GEM_BUG_ON(!execlists_is_active(execlists,
EXECLISTS_ACTIVE_USER));
/* Check the context/desc id for this event matches */
GEM_DEBUG_BUG_ON(buf[2 * head + 1] != port->context_id);
rq = port_unpack(port, &count);
GEM_TRACE("%s out[0]: ctx=%d.%d, seqno=%x\n",
engine->name,
port->context_id, count,
rq ? rq->global_seqno : 0);
/* Check the context/desc id for this event matches */
GEM_DEBUG_BUG_ON(buf[2 * head + 1] != port->context_id);
GEM_BUG_ON(count == 0);
if (--count == 0) {
GEM_BUG_ON(status & GEN8_CTX_STATUS_PREEMPTED);