current_stack_pointeur() is a single instruction function. it
It is not worth breaking the execution flow with a bl/blr for a
single instruction
Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
arch/powerpc/include/asm/reg.h | 7 ++++++-
arch/powerpc/kernel/misc.S | 4 ----
arch/powerpc/kernel/ppc_ksyms.c | 2 --
3 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index c1e82e9..7ce6777 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1301,7 +1301,12 @@ static inline unsigned long mfvtb (void)
#define proc_trap() asm volatile("trap")
-extern unsigned long current_stack_pointer(void);
+static inline unsigned long current_stack_pointer(void)
+{
+ register unsigned long *ptr asm("r1");
+
+ return *ptr;
+}
extern unsigned long scom970_read(unsigned int address);
extern void scom970_write(unsigned int address, unsigned long value);
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
index 0d43219..7ce26d4 100644
--- a/arch/powerpc/kernel/misc.S
+++ b/arch/powerpc/kernel/misc.S
@@ -114,7 +114,3 @@ _GLOBAL(longjmp)
mtlr r0
mr r3,r4
blr
-
-_GLOBAL(current_stack_pointer)
- PPC_LL r3,0(r1)
- blr
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 9f01e28..eb5c5dc 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -33,5 +33,3 @@ EXPORT_SYMBOL(store_vr_state);
#ifdef CONFIG_EPAPR_PARAVIRT
EXPORT_SYMBOL(epapr_hypercall_start);
#endif
-
-EXPORT_SYMBOL(current_stack_pointer);
--
2.1.0
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