[PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c

7d12e522 · Anton Blanchard <[email protected]> · 2005-05-05 16:15:11 -07:00

While looking at code generated by gcc4.0 I noticed some functions still
had frame pointers, even after we stopped ppc64 from defining
CONFIG_FRAME_POINTER.  It turns out kernel/Makefile hardwires
-fno-omit-frame-pointer on when compiling schedule.c.

Create CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER and define it on architectures
that dont require frame pointers in sched.c code.

(akpm: blame me for the name)

Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 7d12e522ba13ce718b7ec32b75803dece8adb072
Parents: 696c2b9f

Changes

4 files changed · +13 −1

File	Status	Add	Del	Content
arch/ia64/Kconfig	modified	+4	−0	View file
arch/ppc/Kconfig	modified	+4	−0	View file
arch/ppc64/Kconfig	modified	+4	−0	View file
kernel/Makefile	modified	+1	−1	View file

arch/ia64/Kconfig

View file

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index ce13ad6..3ad2c4a 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -46,6 +46,10 @@ config GENERIC_IOMAP
 	bool
 	default y
 
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+	bool
+	default y
+
 choice
 	prompt "System type"
 	default IA64_GENERIC

arch/ppc/Kconfig

View file

diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index ff04dcd..d0d94e5 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -43,6 +43,10 @@ config GENERIC_NVRAM
 	bool
 	default y
 
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+	bool
+	default y
+
 source "init/Kconfig"
 
 menu "Processor"

arch/ppc64/Kconfig

View file

diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index f5508ab..257ff66 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -40,6 +40,10 @@ config COMPAT
 	bool
 	default y
 
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+	bool
+	default y
+
 # We optimistically allocate largepages from the VM, so make the limit
 # large enough (16MB). This badly named config option is actually
 # max order + 1

kernel/Makefile

View file

diff --git a/kernel/Makefile b/kernel/Makefile
index eb88b44..b01d26f 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -29,7 +29,7 @@ obj-$(CONFIG_SYSFS) += ksysfs.o
 obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
 obj-$(CONFIG_SECCOMP) += seccomp.o
 
-ifneq ($(CONFIG_IA64),y)
+ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y)
 # According to Alan Modra <[email protected]>, the -fno-omit-frame-pointer is
 # needed for x86 only.  Why this used to be enabled for all architectures is beyond
 # me.  I suspect most platforms don't need this, but until we know that for sure