The new option is CONFIG_CC_DISABLE_AUTO_INLINE and it's
located at:
* Kernel hacking
* Disable gcc automatic inlining
This option appends this options CFLAGS:
-fno-default-inline
-fno-inline
-fno-inline-small-functions
-fno-indirect-inlining
-fno-inline-functions-called-once
It's still not clear which of these really work and which doesn't.
Just in case, just disable all of them.
Signed-off-by: Ezequiel Garcia <elezegar...@gmail.com>
---
Changes from v1:
* Change define name to CONFIG_CC_XXX
* Disable all options that refer to inlining
This work is part of CELF Workgroup Project:
"Kernel_dynamic_memory_allocation_tracking_and_reduction":
http://elinux.org/Kernel_dynamic_memory_allocation_tracking_and_reduction
Makefile | 8 ++++++++
kernel/trace/Kconfig | 4 ++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
index ddf5be9..3169603 100644
--- a/Makefile
+++ b/Makefile
@@ -561,6 +561,14 @@ else
KBUILD_CFLAGS += -O2
endif
+ifdef CONFIG_CC_DISABLE_AUTO_INLINE
+KBUILD_CFLAGS += -fno-default-inline \
+ -fno-inline \
+ -fno-inline-small-functions \
+ -fno-indirect-inlining \
+ -fno-inline-functions-called-once
+endif
+
include $(srctree)/arch/$(SRCARCH)/Makefile
ifdef CONFIG_READABLE_ASM
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 8c4c070..144da36 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -128,6 +128,10 @@ config TRACING_SUPPORT
depends on STACKTRACE_SUPPORT
default y
+config CC_DISABLE_AUTO_INLINE
+ bool "Disable gcc automatic inlining"
+ default n
+
if TRACING_SUPPORT
menuconfig FTRACE
--
1.7.8.6
--
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