lttng-modules: Backport fixes for kernel instrumentation

This backport fixes from upcoming 2.9.4 release. Those are:

 - Fix: vmalloc wrapper on kernel < 2.6.38
 - Fix: vmalloc wrapper on kernel >= 4.12
 - Add kmalloc failover to vmalloc
 - Fix: mmap: caches aliased on virtual addresses
 - Fix: update ext4 instrumentation for kernel 4.13
 - Fix: Sleeping function called from invalid context
 - Fix: sched for v4.11.5-rt1
 - Fix: handle missing ftrace header on v4.12

This fix failures in some BSP layers which are using Linux 4.13
already.

(From OE-Core rev: 45ab93e74252f40dbe777000e1b33f4b3783536e)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/meta/recipes-kernel/lttng/lttng-modules/0008-Fix-vmalloc-wrapper-on-kernel-2.6.38.patch b/meta/recipes-kernel/lttng/lttng-modules/0008-Fix-vmalloc-wrapper-on-kernel-2.6.38.patch
new file mode 100644
index 0000000000..e7a79c67f1
--- /dev/null
+++ b/meta/recipes-kernel/lttng/lttng-modules/0008-Fix-vmalloc-wrapper-on-kernel-2.6.38.patch
@@ -0,0 +1,34 @@
+From a919317a3e3352038c8285a41055b370adc79478 Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Tue, 26 Sep 2017 14:16:47 -0400
+Subject: [PATCH 8/8] Fix: vmalloc wrapper on kernel < 2.6.38
+Organization: O.S. Systems Software LTDA.
+
+Ensure that all probes end up including the vmalloc wrapper through the
+lttng-tracer.h header so the trace_*() static inlines are generated
+through inclusion of include/trace/events/kmem.h before we define
+CREATE_TRACE_POINTS.
+
+Upstream-Status: Backport [2.9.4]
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lttng-tracer.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lttng-tracer.h b/lttng-tracer.h
+index 58a7a26..5da882b 100644
+--- a/lttng-tracer.h
++++ b/lttng-tracer.h
+@@ -36,6 +36,7 @@
+ 
+ #include <wrapper/trace-clock.h>
+ #include <wrapper/compiler.h>
++#include <wrapper/vmalloc.h>
+ #include <lttng-tracer-core.h>
+ #include <lttng-events.h>
+ 
+-- 
+2.14.1
+