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From: Erico Nunes <nunes.erico@gmail.com>
To: Qiang Yu <yuq825@gmail.com>,
	anarsoul@gmail.com, dri-devel@lists.freedesktop.org,
	lima@lists.freedesktop.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
	christian.koenig@amd.com, megi@xff.cz,
	linux-kernel@vger.kernel.org, Erico Nunes <nunes.erico@gmail.com>
Subject: [PATCH v2 2/3] drm/lima: include pp bcast irq in timeout handler check
Date: Fri,  5 Apr 2024 17:29:50 +0200	[thread overview]
Message-ID: <20240405152951.1531555-3-nunes.erico@gmail.com> (raw)
In-Reply-To: <20240405152951.1531555-1-nunes.erico@gmail.com>

In commit 53cb55b20208 ("drm/lima: handle spurious timeouts due to high
irq latency") a check was added to detect an unexpectedly high interrupt
latency timeout.
With further investigation it was noted that on Mali-450 the pp bcast
irq may also be a trigger of race conditions against the timeout
handler, so add it to this check too.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
---
 drivers/gpu/drm/lima/lima_sched.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/lima/lima_sched.c b/drivers/gpu/drm/lima/lima_sched.c
index 00b19adfc888..66841503a618 100644
--- a/drivers/gpu/drm/lima/lima_sched.c
+++ b/drivers/gpu/drm/lima/lima_sched.c
@@ -422,6 +422,8 @@ static enum drm_gpu_sched_stat lima_sched_timedout_job(struct drm_sched_job *job
 	 */
 	for (i = 0; i < pipe->num_processor; i++)
 		synchronize_irq(pipe->processor[i]->irq);
+	if (pipe->bcast_processor)
+		synchronize_irq(pipe->bcast_processor->irq);
 
 	if (dma_fence_is_signaled(task->fence)) {
 		DRM_WARN("%s unexpectedly high interrupt latency\n", lima_ip_name(ip));
-- 
2.44.0


  parent reply	other threads:[~2024-04-05 15:31 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-05 15:29 [PATCH v2 0/3] drm/lima: fix devfreq refcount imbalance for job timeouts Erico Nunes
2024-04-05 15:29 ` [PATCH v2 1/3] drm/lima: add mask irq callback to gp and pp Erico Nunes
2024-04-05 15:29 ` Erico Nunes [this message]
2024-04-05 15:29 ` [PATCH v2 3/3] drm/lima: mask irqs in timeout path before hard reset Erico Nunes
2024-04-06  7:32 ` [PATCH v2 0/3] drm/lima: fix devfreq refcount imbalance for job timeouts Qiang Yu
2024-04-15  1:18   ` Qiang Yu

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