From: Anton Blanchard Date: Thu, 5 May 2005 23:15:11 +0000 (-0700) Subject: [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7d12e522ba13ce718b7ec32b75803dece8adb072;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index ce13ad689d19..3ad2c4af099c 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 diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig index ff04dcd30200..d0d94e56b90b 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" diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig index f5508abf1188..257ff66d83cf 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 diff --git a/kernel/Makefile b/kernel/Makefile index eb88b446c2cc..b01d26fe8db7 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 , 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