65 lines
2.6 KiB
Diff
65 lines
2.6 KiB
Diff
From 3750a91a15e9fbc64e8001433b0da93ad7dbd097 Mon Sep 17 00:00:00 2001
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Message-Id: <3750a91a15e9fbc64e8001433b0da93ad7dbd097.1601675152.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Mike Galbraith <umgwanakikbuti@gmail.com>
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Date: Sat, 27 Feb 2016 08:09:11 +0100
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Subject: [PATCH 251/333] drm,radeon,i915: Use preempt_disable/enable_rt()
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where recommended
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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DRM folks identified the spots, so use them.
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Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
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Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Cc: linux-rt-users <linux-rt-users@vger.kernel.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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drivers/gpu/drm/i915/i915_irq.c | 2 ++
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drivers/gpu/drm/radeon/radeon_display.c | 2 ++
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2 files changed, 4 insertions(+)
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diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
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index b7c398232136..eed1ba3009c6 100644
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--- a/drivers/gpu/drm/i915/i915_irq.c
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+++ b/drivers/gpu/drm/i915/i915_irq.c
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@@ -1025,6 +1025,7 @@ static bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
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spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
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/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
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+ preempt_disable_rt();
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/* Get optional system timestamp before query. */
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if (stime)
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@@ -1076,6 +1077,7 @@ static bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
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*etime = ktime_get();
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/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
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+ preempt_enable_rt();
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spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
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diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
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index 3f0f3a578ddf..7aab36714b28 100644
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--- a/drivers/gpu/drm/radeon/radeon_display.c
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+++ b/drivers/gpu/drm/radeon/radeon_display.c
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@@ -1817,6 +1817,7 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
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struct radeon_device *rdev = dev->dev_private;
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/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
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+ preempt_disable_rt();
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/* Get optional system timestamp before query. */
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if (stime)
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@@ -1909,6 +1910,7 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
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*etime = ktime_get();
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/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
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+ preempt_enable_rt();
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/* Decode into vertical and horizontal scanout position. */
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*vpos = position & 0x1fff;
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--
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2.17.1
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