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-rw-r--r--meta/recipes-kernel/lttng/lttng-modules/0001-Fix-handle-missing-ftrace-header-on-v4.12.patch96
1 files changed, 0 insertions, 96 deletions
diff --git a/meta/recipes-kernel/lttng/lttng-modules/0001-Fix-handle-missing-ftrace-header-on-v4.12.patch b/meta/recipes-kernel/lttng/lttng-modules/0001-Fix-handle-missing-ftrace-header-on-v4.12.patch
deleted file mode 100644
index 37c1f9af49..0000000000
--- a/meta/recipes-kernel/lttng/lttng-modules/0001-Fix-handle-missing-ftrace-header-on-v4.12.patch
+++ /dev/null
@@ -1,96 +0,0 @@
-From fea65d0c097a42cf163bf7035985a6da330b9a1f Mon Sep 17 00:00:00 2001
-From: Michael Jeanson <mjeanson@efficios.com>
-Date: Fri, 23 Jun 2017 14:29:42 -0400
-Subject: [PATCH 1/8] Fix: handle missing ftrace header on v4.12
-Organization: O.S. Systems Software LTDA.
-
-Properly handle the case where we build against the distro headers of a
-kernel >= 4.12 and ftrace is enabled but the private header is
-unavailable.
-
-Upstream-Status: Backport [2.9.4]
-
-Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
-Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
----
- Makefile.ABI.workarounds | 21 +++++++++++++++++++++
- lttng-events.h | 2 +-
- probes/Kbuild | 19 ++++---------------
- 3 files changed, 26 insertions(+), 16 deletions(-)
-
-diff --git a/Makefile.ABI.workarounds b/Makefile.ABI.workarounds
-index c3717f8..2e6c4aa 100644
---- a/Makefile.ABI.workarounds
-+++ b/Makefile.ABI.workarounds
-@@ -27,3 +27,24 @@ RT_PATCH_VERSION:=$(shell $(TOP_LTTNG_MODULES_DIR)/rt-patch-version.sh $(CURDIR)
- ifneq ($(RT_PATCH_VERSION), 0)
- ccflags-y += -DRT_PATCH_VERSION=$(RT_PATCH_VERSION)
- endif
-+
-+# Starting with kernel 4.12, the ftrace header was moved to private headers
-+# and as such is not available when building against distro headers instead
-+# of the full kernel sources. In the situation, define LTTNG_FTRACE_MISSING_HEADER
-+# so we can enable the compat code even if CONFIG_DYNAMIC_FTRACE is enabled.
-+ifneq ($(CONFIG_DYNAMIC_FTRACE),)
-+ ftrace_dep = $(srctree)/kernel/trace/trace.h
-+ ftrace_dep_check = $(wildcard $(ftrace_dep))
-+ have_ftrace_header = $(shell \
-+ if [ $(VERSION) -ge 5 -o \( $(VERSION) -eq 4 -a $(PATCHLEVEL) -ge 12 \) ] ; then \
-+ if [ -z "$(ftrace_dep_check)" ] ; then \
-+ echo "no" ; \
-+ exit ; \
-+ fi; \
-+ fi; \
-+ echo "yes" ; \
-+ )
-+ ifeq ($(have_ftrace_header), no)
-+ ccflags-y += -DLTTNG_FTRACE_MISSING_HEADER
-+ endif
-+endif
-diff --git a/lttng-events.h b/lttng-events.h
-index 173f369..5a96bf3 100644
---- a/lttng-events.h
-+++ b/lttng-events.h
-@@ -810,7 +810,7 @@ int lttng_kretprobes_event_enable_state(struct lttng_event *event,
- }
- #endif
-
--#ifdef CONFIG_DYNAMIC_FTRACE
-+#if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER)
- int lttng_ftrace_register(const char *name,
- const char *symbol_name,
- struct lttng_event *event);
-diff --git a/probes/Kbuild b/probes/Kbuild
-index 78bf3fb..cc1c065 100644
---- a/probes/Kbuild
-+++ b/probes/Kbuild
-@@ -259,22 +259,11 @@ ifneq ($(CONFIG_KRETPROBES),)
- endif # CONFIG_KRETPROBES
-
- ifneq ($(CONFIG_DYNAMIC_FTRACE),)
-- ftrace_dep = $(srctree)/kernel/trace/trace.h
-- ftrace_dep_check = $(wildcard $(ftrace_dep))
-- ftrace = $(shell \
-- if [ $(VERSION) -ge 5 -o \( $(VERSION) -eq 4 -a $(PATCHLEVEL) -ge 12 \) ] ; then \
-- if [ -z "$(ftrace_dep_check)" ] ; then \
-- echo "warn" ; \
-- exit ; \
-- fi; \
-- fi; \
-- echo "lttng-ftrace.o" ; \
-- )
-- ifeq ($(ftrace),warn)
-+ ifeq ($(have_ftrace_header),yes)
-+ obj-$(CONFIG_LTTNG) += lttng-ftrace.o
-+ else
- $(warning Files $(ftrace_dep) not found. Probe "ftrace" is disabled. Use full kernel source tree to enable it.)
-- ftrace =
-- endif # $(ftrace),warn
-- obj-$(CONFIG_LTTNG) += $(ftrace)
-+ endif
- endif # CONFIG_DYNAMIC_FTRACE
-
- # vim:syntax=make
---
-2.14.1
-