Adding debian version 6.6.15-2.debian/6.6.15-2

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

1 files changed, 45 insertions, 0 deletions

diff --git a/debian/patches-rt/0006-drm-i915-Disable-tracing-points-on-PREEMPT_RT.patch b/debian/patches-rt/0006-drm-i915-Disable-tracing-points-on-PREEMPT_RT.patch
new file mode 100644
index 0000000000..f29f29bdfe
--- /dev/null
+++ b/debian/patches-rt/0006-drm-i915-Disable-tracing-points-on-PREEMPT_RT.patch
@@ -0,0 +1,45 @@
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Thu, 6 Dec 2018 09:52:20 +0100
+Subject: [PATCH 06/10] drm/i915: Disable tracing points on PREEMPT_RT
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
+
+Luca Abeni reported this:
+| BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003
+| CPU: 1 PID: 15203 Comm: kworker/u8:2 Not tainted 4.19.1-rt3 #10
+| Call Trace:
+|  rt_spin_lock+0x3f/0x50
+|  gen6_read32+0x45/0x1d0 [i915]
+|  g4x_get_vblank_counter+0x36/0x40 [i915]
+|  trace_event_raw_event_i915_pipe_update_start+0x7d/0xf0 [i915]
+
+The tracing events use trace_i915_pipe_update_start() among other events
+use functions acquire spinlock_t locks which are transformed into
+sleeping locks on PREEMPT_RT. A few trace points use
+intel_get_crtc_scanline(), others use ->get_vblank_counter() wich also
+might acquire a sleeping locks on PREEMPT_RT.
+At the time the arguments are evaluated within trace point, preemption
+is disabled and so the locks must not be acquired on PREEMPT_RT.
+
+Based on this I don't see any other way than disable trace points on
+PREMPT_RT.
+
+Reported-by: Luca Abeni <lucabe72@gmail.com>
+Cc: Steven Rostedt <rostedt@goodmis.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/gpu/drm/i915/i915_trace.h |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/gpu/drm/i915/i915_trace.h
++++ b/drivers/gpu/drm/i915/i915_trace.h
+@@ -6,6 +6,10 @@
+ #if !defined(_I915_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+ #define _I915_TRACE_H_
+ 
++#ifdef CONFIG_PREEMPT_RT
++#define NOTRACE
++#endif
++
+ #include <linux/stringify.h>
+ #include <linux/types.h>
+ #include <linux/tracepoint.h>