Adding debian version 5.10.209-2.debian/5.10.209-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/debian/patches-rt/0306-drm-i915-gt-Queue-and-wait-for-the-irq_work-item.patch b/debian/patches-rt/0306-drm-i915-gt-Queue-and-wait-for-the-irq_work-item.patch
new file mode 100644
index 000000000..c7e1e5838
--- /dev/null
+++ b/debian/patches-rt/0306-drm-i915-gt-Queue-and-wait-for-the-irq_work-item.patch
@@ -0,0 +1,49 @@
+From 45cb435eff7cd17311c87552c32c3a202b09bf51 Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Tue, 26 Oct 2021 13:40:53 +0200
+Subject: [PATCH 306/323] drm/i915/gt: Queue and wait for the irq_work item.
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+Disabling interrupts and invoking the irq_work function directly breaks
+on PREEMPT_RT.
+PREEMPT_RT does not invoke all irq_work from hardirq context because
+some of the user have spinlock_t locking in the callback function.
+These locks are then turned into a sleeping locks which can not be
+acquired with disabled interrupts.
+
+Using irq_work_queue() has the benefit that the irqwork will be invoked
+in the regular context. In general there is "no" delay between enqueuing
+the callback and its invocation because the interrupt is raised right
+away on architectures which support it (which includes x86).
+
+Use irq_work_queue() + irq_work_sync() instead invoking the callback
+directly.
+
+Reported-by: Clark Williams <williams@redhat.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
+Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+---
+ drivers/gpu/drm/i915/gt/intel_breadcrumbs.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
+index 0040b4765a54..3f4f854786f2 100644
+--- a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
++++ b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
+@@ -342,10 +342,9 @@ void intel_breadcrumbs_park(struct intel_breadcrumbs *b)
+ 	/* Kick the work once more to drain the signalers */
+ 	irq_work_sync(&b->irq_work);
+ 	while (unlikely(READ_ONCE(b->irq_armed))) {
+-		local_irq_disable();
+-		signal_irq_work(&b->irq_work);
+-		local_irq_enable();
++		irq_work_queue(&b->irq_work);
+ 		cond_resched();
++		irq_work_sync(&b->irq_work);
+ 	}
+ 	GEM_BUG_ON(!list_empty(&b->signalers));
+ }
+-- 
+2.43.0
+