From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org,
linux-rt-users <linux-rt-users@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Carsten Emde <C.Emde@osadl.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
John Kacur <jkacur@redhat.com>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
Mike Galbraith <umgwanakikbuti@gmail.com>
Subject: [PATCH RT 12/17] drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
Date: Wed, 02 Mar 2016 10:44:45 -0500 [thread overview]
Message-ID: <20160302154501.720677791@goodmis.org> (raw)
In-Reply-To: 20160302154433.638594715@goodmis.org
[-- Attachment #1: 0012-drm-radeon-i915-Use-preempt_disable-enable_rt-where-.patch --]
[-- Type: text/plain, Size: 2266 bytes --]
3.14.61-rt64-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Mike Galbraith <umgwanakikbuti@gmail.com>
DRM folks identified the spots, so use them.
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-rt-users <linux-rt-users@vger.kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
drivers/gpu/drm/i915/i915_irq.c | 2 ++
drivers/gpu/drm/radeon/radeon_display.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 40504504c9e2..a7368ce0e912 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -680,6 +680,7 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
+ preempt_disable_rt();
/* Get optional system timestamp before query. */
if (stime)
@@ -769,6 +770,7 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
*etime = ktime_get();
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
+ preempt_enable_rt();
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 1af604a4512a..444bc26e0dd1 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1644,6 +1644,7 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
struct radeon_device *rdev = dev->dev_private;
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
+ preempt_disable_rt();
/* Get optional system timestamp before query. */
if (stime)
@@ -1736,6 +1737,7 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
*etime = ktime_get();
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
+ preempt_enable_rt();
/* Decode into vertical and horizontal scanout position. */
*vpos = position & 0x1fff;
--
2.7.0
next prev parent reply other threads:[~2016-03-02 15:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-02 15:44 [PATCH RT 00/17] Linux 3.14.61-rt64-rc1 Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 01/17] ptrace: dont open IRQs in ptrace_freeze_traced() too early Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 02/17] net: move xmit_recursion to per-task variable on -RT Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 03/17] preempt-lazy: Add the lazy-preemption check to preempt_schedule() Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 04/17] softirq: split timer softirqs out of ksoftirqd Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 05/17] net: provide a way to delegate processing a softirq to ksoftirqd Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 06/17] latencyhist: disable jump-labels Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 07/17] arm64: replace read_lock to rcu lock in call_step_hook Steven Rostedt
2016-03-03 4:23 ` Pratyush Anand
2016-03-03 14:12 ` Steven Rostedt
2016-03-03 14:21 ` Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 08/17] kernel: migrate_disable() do fastpath in atomic & irqs-off Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 09/17] kernel: softirq: unlock with irqs on Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 10/17] kernel/stop_machine: partly revert "stop_machine: Use raw spinlocks" Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 11/17] sched,rt: __always_inline preemptible_lazy() Steven Rostedt
2016-03-02 15:44 ` Steven Rostedt [this message]
2016-03-02 15:44 ` [PATCH RT 13/17] trace: Use rcuidle version for preemptoff_hist trace point Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 14/17] f2fs: Mutex cant be used by down_write_nest_lock() Steven Rostedt
2016-03-02 15:44 ` Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 15/17] rcu/torture: Comment out rcu_bh ops on PREEMPT_RT_FULL Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 16/17] kernel: sched: Fix preempt_disable_ip recodring for preempt_disable() Steven Rostedt
2016-03-02 15:44 ` [PATCH RT 17/17] Linux 3.14.61-rt64-rc1 Steven Rostedt
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