From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 1/2] powerpc: Remove empty giveup_altivec function on book3e CPUs
Date: Mon, 16 Apr 2012 16:54:59 +1000 [thread overview]
Message-ID: <20120416165459.6da18f9c@kryten> (raw)
Use an empty inline instead of an empty function to implement
giveup_altivec on book3e CPUs, similar to flush_altivec_to_thread.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
Index: linux-build/arch/powerpc/include/asm/switch_to.h
===================================================================
--- linux-build.orig/arch/powerpc/include/asm/switch_to.h 2012-04-16 12:56:11.000000000 +1000
+++ linux-build/arch/powerpc/include/asm/switch_to.h 2012-04-16 12:56:45.149313158 +1000
@@ -21,7 +21,6 @@ extern void disable_kernel_fp(void);
extern void enable_kernel_fp(void);
extern void flush_fp_to_thread(struct task_struct *);
extern void enable_kernel_altivec(void);
-extern void giveup_altivec(struct task_struct *);
extern void load_up_altivec(struct task_struct *);
extern int emulate_altivec(struct pt_regs *);
extern void __giveup_vsx(struct task_struct *);
@@ -40,10 +39,14 @@ static inline void discard_lazy_cpu_stat
#ifdef CONFIG_ALTIVEC
extern void flush_altivec_to_thread(struct task_struct *);
+extern void giveup_altivec(struct task_struct *);
#else
static inline void flush_altivec_to_thread(struct task_struct *t)
{
}
+static inline void giveup_altivec(struct task_struct *t)
+{
+}
#endif
#ifdef CONFIG_VSX
Index: linux-build/arch/powerpc/kernel/head_44x.S
===================================================================
--- linux-build.orig/arch/powerpc/kernel/head_44x.S 2012-04-16 12:56:11.976708702 +1000
+++ linux-build/arch/powerpc/kernel/head_44x.S 2012-04-16 12:56:45.153313231 +1000
@@ -778,14 +778,6 @@ _GLOBAL(__fixup_440A_mcheck)
blr
/*
- * extern void giveup_altivec(struct task_struct *prev)
- *
- * The 44x core does not have an AltiVec unit.
- */
-_GLOBAL(giveup_altivec)
- blr
-
-/*
* extern void giveup_fpu(struct task_struct *prev)
*
* The 44x core does not have an FPU.
Index: linux-build/arch/powerpc/kernel/head_fsl_booke.S
===================================================================
--- linux-build.orig/arch/powerpc/kernel/head_fsl_booke.S 2012-04-16 12:56:11.940708046 +1000
+++ linux-build/arch/powerpc/kernel/head_fsl_booke.S 2012-04-16 12:56:45.153313231 +1000
@@ -874,14 +874,6 @@ _GLOBAL(__setup_e500mc_ivors)
sync
blr
-/*
- * extern void giveup_altivec(struct task_struct *prev)
- *
- * The e500 core does not have an AltiVec unit.
- */
-_GLOBAL(giveup_altivec)
- blr
-
#ifdef CONFIG_SPE
/*
* extern void giveup_spe(struct task_struct *prev)
next reply other threads:[~2012-04-16 6:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-16 6:54 Anton Blanchard [this message]
2012-04-16 6:56 ` [PATCH 2/2] powerpc: Optimise enable_kernel_altivec Anton Blanchard
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