From 695eaa3b60a0a9a2baf41241e60b589efb6479ee Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 23 Apr 2017 18:06:19 +0100 Subject: [PATCH] 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: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/20170423170619.7156-4-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala --- drivers/gpu/drm/i915/intel_breadcrumbs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index 9ccbf26124c6..35da5928bd8a 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -64,10 +64,12 @@ static unsigned long wait_timeout(void) 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), 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); } -- GitLab