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sh: comment tidying for sh64->sh migration.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2007-11-28 20:19:38 +09:00
parent 4b27c47cf8
commit a23ba43573
30 changed files with 150 additions and 190 deletions
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10
arch/sh/kernel/cpu/irq/intc-sh5.c
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@@ -1,18 +1,18 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
* arch/sh/kernel/cpu/irq/intc-sh5.c
*
* arch/sh64/kernel/irq_intc.c
* Interrupt Controller support for SH5 INTC.
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 Paul Mundt
*
* Interrupt Controller support for SH5 INTC.
* Per-interrupt selective. IRLM=0 (Fixed priority) is not
* supported being useless without a cascaded interrupt
* controller.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/interrupt.h>

13
arch/sh/kernel/cpu/sh5/entry.S
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@@ -1,14 +1,13 @@
/*
* arch/sh/kernel/cpu/sh5/entry.S
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2004 - 2007 Paul Mundt
* Copyright (C) 2003, 2004 Richard Curnow
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/entry.S
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2004, 2005 Paul Mundt
* Copyright (C) 2003, 2004 Richard Curnow
*
*/
#include <linux/errno.h>
#include <linux/sys.h>

10
arch/sh/kernel/cpu/sh5/fpu.c
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@@ -1,9 +1,5 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/fpu.c
* arch/sh/kernel/cpu/sh5/fpu.c
*
* Copyright (C) 2001 Manuela Cirronis, Paolo Alberelli
* Copyright (C) 2002 STMicroelectronics Limited
@@ -12,8 +8,10 @@
* Started from SH4 version:
* Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/sched.h>
#include <linux/signal.h>
#include <asm/processor.h>

2
arch/sh/kernel/cpu/sh5/switchto.S
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@@ -1,5 +1,5 @@
/*
* arch/sh64/kernel/switchto.S
* arch/sh/kernel/cpu/sh5/switchto.S
*
* sh64 context switch
*

2
arch/sh/kernel/cpu/sh5/unwind.c
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@@ -1,5 +1,5 @@
/*
* arch/sh64/kernel/unwind.c
* arch/sh/kernel/cpu/sh5/unwind.c
*
* Copyright (C) 2004 Paul Mundt
* Copyright (C) 2004 Richard Curnow

19
arch/sh/kernel/head_64.S
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@@ -1,23 +1,12 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/head.S
* arch/sh/kernel/head_64.S
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003, 2004 Paul Mundt
*
*
* benedict.gaster@superh.com: 2nd May 2002
* Moved definition of empty_zero_page to its own section allowing
* it to be placed at an absolute address known at load time.
*
* lethal@linux-sh.org: 9th May 2003
* Kill off GLOBAL_NAME() usage.
*
* lethal@linux-sh.org: 8th May 2004
* Add early SCIF console DTLB mapping.
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <asm/page.h>
#include <asm/cache.h>

29
arch/sh/kernel/process_64.c
View File

@@ -421,19 +421,22 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
*/
void exit_thread(void)
{
/* See arch/sparc/kernel/process.c for the precedent for doing this -- RPC.
The SH-5 FPU save/restore approach relies on last_task_used_math
pointing to a live task_struct. When another task tries to use the
FPU for the 1st time, the FPUDIS trap handling (see
arch/sh64/kernel/fpu.c) will save the existing FPU state to the
FP regs field within last_task_used_math before re-loading the new
task's FPU state (or initialising it if the FPU has been used
before). So if last_task_used_math is stale, and its page has already been
re-allocated for another use, the consequences are rather grim. Unless we
null it here, there is no other path through which it would get safely
nulled. */
/*
* See arch/sparc/kernel/process.c for the precedent for doing
* this -- RPC.
*
* The SH-5 FPU save/restore approach relies on
* last_task_used_math pointing to a live task_struct. When
* another task tries to use the FPU for the 1st time, the FPUDIS
* trap handling (see arch/sh/kernel/cpu/sh5/fpu.c) will save the
* existing FPU state to the FP regs field within
* last_task_used_math before re-loading the new task's FPU state
* (or initialising it if the FPU has been used before). So if
* last_task_used_math is stale, and its page has already been
* re-allocated for another use, the consequences are rather
* grim. Unless we null it here, there is no other path through
* which it would get safely nulled.
*/
#ifdef CONFIG_SH_FPU
if (last_task_used_math == current) {
last_task_used_math = NULL;

9
arch/sh/kernel/sh_ksyms_64.c
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@@ -1,12 +1,11 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/sh_ksyms.c
* arch/sh/kernel/sh_ksyms_64.c
*
* Copyright (C) 2000, 2001 Paolo Alberelli
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/rwsem.h>
#include <linux/module.h>

11
arch/sh/kernel/signal_64.c
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@@ -1,16 +1,13 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/signal.c
* arch/sh/kernel/signal_64.c
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 Paul Mundt
* Copyright (C) 2004 Richard Curnow
*
* Started from sh version.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/rwsem.h>
#include <linux/sched.h>

2
arch/sh/kernel/syscalls_64.S
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@@ -1,5 +1,5 @@
/*
* arch/sh64/kernel/syscalls.S
* arch/sh/kernel/syscalls_64.S
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2004 - 2007 Paul Mundt

10
arch/sh/kernel/time_64.c
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@@ -1,9 +1,5 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/time.c
* arch/sh/kernel/time_64.c
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 - 2007 Paul Mundt
@@ -13,6 +9,10 @@
* Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka
* Some code taken from i386 version.
* Copyright (C) 1991, 1992, 1995 Linus Torvalds
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/errno.h>
#include <linux/rwsem.h>

14
arch/sh/kernel/traps_64.c
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@@ -1,19 +1,13 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/kernel/traps.c
* arch/sh/kernel/traps_64.c
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003, 2004 Paul Mundt
* Copyright (C) 2003, 2004 Richard Curnow
*
*/
/*
* 'Traps.c' handles hardware traps and faults after we have saved some
* state in 'entry.S'.
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/sched.h>
#include <linux/kernel.h>