From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kuoppala Subject: Re: [PATCH 2/2] drm/i915: Include the last semaphore sync point in the error-state Date: Thu, 29 Nov 2012 11:16:20 +0200 Message-ID: <877gp44vmj.fsf@gaia.fi.intel.com> References: <1354036014-10911-1-git-send-email-chris@chris-wilson.co.uk> <1354036014-10911-2-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id B1639E5F16 for ; Thu, 29 Nov 2012 01:16:37 -0800 (PST) In-Reply-To: <1354036014-10911-2-git-send-email-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Chris Wilson , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Tue, 27 Nov 2012 17:06:54 +0000, Chris Wilson wrote: > Should be useful to know what the driver thought the other ring's seqno > was when it last used a semaphore. > > Signed-off-by: Chris Wilson > --- > drivers/gpu/drm/i915/i915_debugfs.c | 10 ++++++---- > drivers/gpu/drm/i915/i915_drv.h | 1 + > drivers/gpu/drm/i915/i915_irq.c | 2 ++ > 3 files changed, 9 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c > index c52758c..5359f376 100644 > --- a/drivers/gpu/drm/i915/i915_debugfs.c > +++ b/drivers/gpu/drm/i915/i915_debugfs.c > @@ -657,10 +657,12 @@ static void i915_ring_error_state(struct seq_file *m, > if (INTEL_INFO(dev)->gen >= 6) { > seq_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]); > seq_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]); > - seq_printf(m, " SYNC_0: 0x%08x\n", > - error->semaphore_mboxes[ring][0]); > - seq_printf(m, " SYNC_1: 0x%08x\n", > - error->semaphore_mboxes[ring][1]); > + seq_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n", > + error->semaphore_mboxes[ring][0], > + error->semaphore_seqno[ring][0]); > + seq_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n", > + error->semaphore_mboxes[ring][1], > + error->semaphore_seqno[ring][1]); > } > seq_printf(m, " seqno: 0x%08x\n", error->seqno[ring]); > seq_printf(m, " waiting: %s\n", yesno(error->waiting[ring])); > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index 23afc21..476aa94 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -199,6 +199,7 @@ struct drm_i915_error_state { > u32 instdone[I915_NUM_RINGS]; > u32 acthd[I915_NUM_RINGS]; > u32 semaphore_mboxes[I915_NUM_RINGS][I915_NUM_RINGS - 1]; > + u32 semaphore_seqno[I915_NUM_RINGS][I915_NUM_RINGS - 1]; > u32 rc_psmi[I915_NUM_RINGS]; /* sleep state */ > /* our own tracking of ring head and tail */ > u32 cpu_ring_head[I915_NUM_RINGS]; > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c > index bfb6c51..1f40090 100644 > --- a/drivers/gpu/drm/i915/i915_irq.c > +++ b/drivers/gpu/drm/i915/i915_irq.c > @@ -1156,6 +1156,8 @@ static void i915_record_ring_state(struct drm_device *dev, > = I915_READ(RING_SYNC_0(ring->mmio_base)); > error->semaphore_mboxes[ring->id][1] > = I915_READ(RING_SYNC_1(ring->mmio_base)); > + error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0]; > + error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1]; > } > > if (INTEL_INFO(dev)->gen >= 4) { > -- > 1.7.10.4 This patch was important for catching a seqno wrap problem in i915_gem_object_sync(). Reviewed-by: Mika Kuoppala