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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120416165459.6da18f9c@kryten \
--to=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.