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Date: Mon, 30 Apr 2012 23:04:39 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Sam Ravnborg <sam@...nborg.org>
cc: LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>
Subject: Re: [patch 23/29] sparc: Use generic init_task
On Mon, 30 Apr 2012, Thomas Gleixner wrote:
> On Mon, 30 Apr 2012, Sam Ravnborg wrote:
> > This breaks sparc build as it has the following in arch/sparc/Makefile:
> >
> > head-y += arch/sparc/kernel/init_task.o
>
> Hrmm, I thought I had catched all of this nonsense.
Updated version below.
Thanks,
tglx
-------------------->
Subject: sparc: Use generic init_task
From: Thomas Gleixner <tglx@...utronix.de>
Date: Mon, 30 Apr 2012 16:48:55 +0200
Same code. Use the generic version. The special Makefile treatment is
pointless anyway as init_task.o contains only data which is handled by
the linker script. So no point on being treated like head text.
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: "David S. Miller" <davem@...emloft.net>
---
arch/sparc/Kconfig | 1 +
arch/sparc/Makefile | 1 -
arch/sparc/kernel/Makefile | 1 -
arch/sparc/kernel/init_task.c | 22 ----------------------
4 files changed, 1 insertion(+), 24 deletions(-)
Index: tip/arch/sparc/Kconfig
===================================================================
--- tip.orig/arch/sparc/Kconfig
+++ tip/arch/sparc/Kconfig
@@ -31,6 +31,7 @@ config SPARC
select GENERIC_PCI_IOMAP
select HAVE_NMI_WATCHDOG if SPARC64
select GENERIC_SMP_IDLE_THREAD
+ select HAVE_GENERIC_INIT_TASK
config SPARC32
def_bool !64BIT
Index: tip/arch/sparc/Makefile
===================================================================
--- tip.orig/arch/sparc/Makefile
+++ tip/arch/sparc/Makefile
@@ -62,7 +62,6 @@ endif
endif
head-y := arch/sparc/kernel/head_$(BITS).o
-head-y += arch/sparc/kernel/init_task.o
core-y += arch/sparc/kernel/
core-y += arch/sparc/mm/ arch/sparc/math-emu/
Index: tip/arch/sparc/kernel/Makefile
===================================================================
--- tip.orig/arch/sparc/kernel/Makefile
+++ tip/arch/sparc/kernel/Makefile
@@ -6,7 +6,6 @@ asflags-y := -ansi
ccflags-y := -Werror
extra-y := head_$(BITS).o
-extra-y += init_task.o
# Undefine sparc when processing vmlinux.lds - it is used
# And teach CPP we are doing $(BITS) builds (for this case)
Index: tip/arch/sparc/kernel/init_task.c
===================================================================
--- tip.orig/arch/sparc/kernel/init_task.c
+++ /dev/null
@@ -1,22 +0,0 @@
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
-/* .text section in head.S is aligned at 8k boundary and this gets linked
- * right after that so that the init_thread_union is aligned properly as well.
- * If this is not aligned on a 8k boundary, then you should change code
- * in etrap.S which assumes it.
- */
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
--
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