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Commit 695eaa3b authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Include interesting seqno in the missed breadcrumb debug 



Knowing the neighbouring seqno (current on hw, last submitted to hw)
provide some useful breadcrumbs to the debug log.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170423170619.7156-4-chris@chris-wilson.co.uk


Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
parent ade0b0c9

drivers/gpu/drm/i915/intel_breadcrumbs.c

+4 −2
Original line number Original line Diff line number Diff line
@@ -64,10 +64,12 @@ static unsigned long wait_timeout(void) 




static noinline void missed_breadcrumb(struct intel_engine_cs *engine)

static noinline void missed_breadcrumb(struct intel_engine_cs *engine)

{

{

	DRM_DEBUG_DRIVER("%s missed breadcrumb at %pF, irq posted? %s\n",

	DRM_DEBUG_DRIVER("%s missed breadcrumb at %pF, irq posted? %s, current seqno=%x, last=%x\n",

			 engine->name, __builtin_return_address(0),

			 engine->name, __builtin_return_address(0),

			 yesno(test_bit(ENGINE_IRQ_BREADCRUMB,

			 yesno(test_bit(ENGINE_IRQ_BREADCRUMB,

					&engine->irq_posted)));

					&engine->irq_posted)),

			 intel_engine_get_seqno(engine),

			 intel_engine_last_submit(engine));





	set_bit(engine->id, &engine->i915->gpu_error.missed_irq_rings);

	set_bit(engine->id, &engine->i915->gpu_error.missed_irq_rings);

}

}