From a23ba43573a24c351640bc19c06c701798fe6e25 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 28 Nov 2007 20:19:38 +0900 Subject: sh: comment tidying for sh64->sh migration. Signed-off-by: Paul Mundt --- arch/sh/boards/cayman/led.c | 2 +- arch/sh/boot/compressed/Makefile_64 | 10 +++++----- arch/sh/boot/compressed/misc_64.c | 2 +- arch/sh/kernel/cpu/irq/intc-sh5.c | 10 +++++----- arch/sh/kernel/cpu/sh5/entry.S | 13 ++++++------- arch/sh/kernel/cpu/sh5/fpu.c | 10 ++++------ arch/sh/kernel/cpu/sh5/switchto.S | 2 +- arch/sh/kernel/cpu/sh5/unwind.c | 2 +- arch/sh/kernel/head_64.S | 19 ++++--------------- arch/sh/kernel/process_64.c | 29 ++++++++++++++++------------- arch/sh/kernel/sh_ksyms_64.c | 9 ++++----- arch/sh/kernel/signal_64.c | 11 ++++------- arch/sh/kernel/syscalls_64.S | 2 +- arch/sh/kernel/time_64.c | 10 +++++----- arch/sh/kernel/traps_64.c | 14 ++++---------- arch/sh/lib64/c-checksum.c | 5 +---- arch/sh/lib64/dbg.c | 2 +- arch/sh/lib64/udelay.c | 2 +- arch/sh/mm/cache-sh5.c | 15 ++++++--------- arch/sh/mm/extable_64.c | 28 +++++++++++++++------------- arch/sh/mm/tlb-sh5.c | 4 +--- 21 files changed, 87 insertions(+), 114 deletions(-) (limited to 'arch') diff --git a/arch/sh/boards/cayman/led.c b/arch/sh/boards/cayman/led.c index b4e122f..a808eac 100644 --- a/arch/sh/boards/cayman/led.c +++ b/arch/sh/boards/cayman/led.c @@ -1,5 +1,5 @@ /* - * arch/sh64/mach-cayman/led.c + * arch/sh/boards/cayman/led.c * * Copyright (C) 2002 Stuart Menefy * diff --git a/arch/sh/boot/compressed/Makefile_64 b/arch/sh/boot/compressed/Makefile_64 index 0b48ae9..4334f2b 100644 --- a/arch/sh/boot/compressed/Makefile_64 +++ b/arch/sh/boot/compressed/Makefile_64 @@ -1,14 +1,14 @@ # -# linux/arch/sh64/boot/compressed/Makefile +# arch/sh/boot/compressed/Makefile_64 # -# 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. +# create a compressed vmlinux image from the original vmlinux # # Copyright (C) 2002 Stuart Menefy # Copyright (C) 2004 Paul Mundt # -# create a compressed vmlinux image from the original vmlinux +# 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. # targets := vmlinux vmlinux.bin vmlinux.bin.gz \ diff --git a/arch/sh/boot/compressed/misc_64.c b/arch/sh/boot/compressed/misc_64.c index aea00c5..a006ef8 100644 --- a/arch/sh/boot/compressed/misc_64.c +++ b/arch/sh/boot/compressed/misc_64.c @@ -1,5 +1,5 @@ /* - * arch/sh64/boot/compressed/misc.c + * arch/sh/boot/compressed/misc_64.c * * This is a collection of several routines from gzip-1.0.3 * adapted for Linux. diff --git a/arch/sh/kernel/cpu/irq/intc-sh5.c b/arch/sh/kernel/cpu/irq/intc-sh5.c index 49b845a..43ee7a9 100644 --- a/arch/sh/kernel/cpu/irq/intc-sh5.c +++ b/arch/sh/kernel/cpu/irq/intc-sh5.c @@ -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 #include diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S index dbf2d76..ba87501 100644 --- a/arch/sh/kernel/cpu/sh5/entry.S +++ b/arch/sh/kernel/cpu/sh5/entry.S @@ -1,14 +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/entry.S + * arch/sh/kernel/cpu/sh5/entry.S * * Copyright (C) 2000, 2001 Paolo Alberelli - * Copyright (C) 2004, 2005 Paul Mundt - * Copyright (C) 2003, 2004 Richard Curnow + * 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. */ #include #include diff --git a/arch/sh/kernel/cpu/sh5/fpu.c b/arch/sh/kernel/cpu/sh5/fpu.c index 5a391b1..30b76a9 100644 --- a/arch/sh/kernel/cpu/sh5/fpu.c +++ b/arch/sh/kernel/cpu/sh5/fpu.c @@ -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 #include #include diff --git a/arch/sh/kernel/cpu/sh5/switchto.S b/arch/sh/kernel/cpu/sh5/switchto.S index 45b2d90..45c351b0 100644 --- a/arch/sh/kernel/cpu/sh5/switchto.S +++ b/arch/sh/kernel/cpu/sh5/switchto.S @@ -1,5 +1,5 @@ /* - * arch/sh64/kernel/switchto.S + * arch/sh/kernel/cpu/sh5/switchto.S * * sh64 context switch * diff --git a/arch/sh/kernel/cpu/sh5/unwind.c b/arch/sh/kernel/cpu/sh5/unwind.c index 1214c78..119c20a 100644 --- a/arch/sh/kernel/cpu/sh5/unwind.c +++ b/arch/sh/kernel/cpu/sh5/unwind.c @@ -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 diff --git a/arch/sh/kernel/head_64.S b/arch/sh/kernel/head_64.S index d347928..f42d4c0 100644 --- a/arch/sh/kernel/head_64.S +++ b/arch/sh/kernel/head_64.S @@ -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 #include diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c index 973dd1a..cff3b7d 100644 --- a/arch/sh/kernel/process_64.c +++ b/arch/sh/kernel/process_64.c @@ -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; diff --git a/arch/sh/kernel/sh_ksyms_64.c b/arch/sh/kernel/sh_ksyms_64.c index fbc991c..8004c38 100644 --- a/arch/sh/kernel/sh_ksyms_64.c +++ b/arch/sh/kernel/sh_ksyms_64.c @@ -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 #include diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 9228919..80bde19 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -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 #include diff --git a/arch/sh/kernel/syscalls_64.S b/arch/sh/kernel/syscalls_64.S index abb94c0..98a93ef 100644 --- a/arch/sh/kernel/syscalls_64.S +++ b/arch/sh/kernel/syscalls_64.S @@ -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 diff --git a/arch/sh/kernel/time_64.c b/arch/sh/kernel/time_64.c index 81003af..f819ba3 100644 --- a/arch/sh/kernel/time_64.c +++ b/arch/sh/kernel/time_64.c @@ -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 #include diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c index b8020f2..c0b3c6f 100644 --- a/arch/sh/kernel/traps_64.c +++ b/arch/sh/kernel/traps_64.c @@ -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 #include diff --git a/arch/sh/lib64/c-checksum.c b/arch/sh/lib64/c-checksum.c index 053137a..5dfbd8b 100644 --- a/arch/sh/lib64/c-checksum.c +++ b/arch/sh/lib64/c-checksum.c @@ -1,12 +1,9 @@ /* - * arch/sh64/lib/c-checksum.c + * arch/sh/lib64/c-checksum.c * * This file contains network checksum routines that are better done * in an architecture-specific manner due to speed.. */ - -#undef DEBUG - #include #include #include diff --git a/arch/sh/lib64/dbg.c b/arch/sh/lib64/dbg.c index 97816e0..75825ef 100644 --- a/arch/sh/lib64/dbg.c +++ b/arch/sh/lib64/dbg.c @@ -2,7 +2,7 @@ -- -- Identity : Linux50 Debug Funcions -- --- File : arch/sh64/lib/dbg.C +-- File : arch/sh/lib64/dbg.c -- -- Copyright 2000, 2001 STMicroelectronics Limited. -- Copyright 2004 Richard Curnow (evt_debug etc) diff --git a/arch/sh/lib64/udelay.c b/arch/sh/lib64/udelay.c index 4c71a74..23c7d17 100644 --- a/arch/sh/lib64/udelay.c +++ b/arch/sh/lib64/udelay.c @@ -1,5 +1,5 @@ /* - * arch/sh64/lib/udelay.c + * arch/sh/lib64/udelay.c * * Delay routines, using a pre-computed "loops_per_jiffy" value. * diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c index 421487c..4617e3a 100644 --- a/arch/sh/mm/cache-sh5.c +++ b/arch/sh/mm/cache-sh5.c @@ -1,18 +1,15 @@ /* - * 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/mm/cache.c + * arch/sh/mm/cache-sh5.c * * Original version Copyright (C) 2000, 2001 Paolo Alberelli * Second version Copyright (C) benedict.gaster@superh.com 2002 * Third version Copyright Richard.Curnow@superh.com 2003 * Hacks to third version Copyright (C) 2003 Paul Mundt + * + * 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 #include #include @@ -146,7 +143,7 @@ int __init sh64_cache_init(void) /* The following group of functions deal with mapping and unmapping a temporary page into the DTLB slot that have been set aside for our exclusive use. */ /* In order to accomplish this, we use the generic interface for adding and - removing a wired slot entry as defined in arch/sh64/mm/tlb.c */ + removing a wired slot entry as defined in arch/sh/mm/tlb-sh5.c */ /****************************************************************************/ static unsigned long slot_own_flags; diff --git a/arch/sh/mm/extable_64.c b/arch/sh/mm/extable_64.c index a2e6e05..f054996 100644 --- a/arch/sh/mm/extable_64.c +++ b/arch/sh/mm/extable_64.c @@ -1,14 +1,14 @@ /* - * 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/mm/extable.c + * arch/sh/mm/extable_64.c * * Copyright (C) 2003 Richard Curnow * Copyright (C) 2003, 2004 Paul Mundt * * Cloned from the 2.5 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 #include @@ -21,13 +21,16 @@ static const struct exception_table_entry __copy_user_fixup_ex = { .fixup = (unsigned long)&__copy_user_fixup, }; -/* Some functions that may trap due to a bad user-mode address have too many loads - and stores in them to make it at all practical to label each one and put them all in - the main exception table. - - In particular, the fast memcpy routine is like this. It's fix-up is just to fall back - to a slow byte-at-a-time copy, which is handled the conventional way. So it's functionally - OK to just handle any trap occurring in the fast memcpy with that fixup. */ +/* + * Some functions that may trap due to a bad user-mode address have too + * many loads and stores in them to make it at all practical to label + * each one and put them all in the main exception table. + * + * In particular, the fast memcpy routine is like this. It's fix-up is + * just to fall back to a slow byte-at-a-time copy, which is handled the + * conventional way. So it's functionally OK to just handle any trap + * occurring in the fast memcpy with that fixup. + */ static const struct exception_table_entry *check_exception_ranges(unsigned long addr) { if ((addr >= (unsigned long)©_user_memcpy) && @@ -77,4 +80,3 @@ int fixup_exception(struct pt_regs *regs) return 0; } - diff --git a/arch/sh/mm/tlb-sh5.c b/arch/sh/mm/tlb-sh5.c index d517e7d..f34274a 100644 --- a/arch/sh/mm/tlb-sh5.c +++ b/arch/sh/mm/tlb-sh5.c @@ -1,5 +1,5 @@ /* - * arch/sh64/mm/tlb.c + * arch/sh/mm/tlb-sh5.c * * Copyright (C) 2003 Paul Mundt * Copyright (C) 2003 Richard Curnow @@ -7,7 +7,6 @@ * 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 #include @@ -163,4 +162,3 @@ inline void sh64_setup_tlb_slot(unsigned long long config_addr, */ inline void sh64_teardown_tlb_slot(unsigned long long config_addr) __attribute__ ((alias("__flush_tlb_slot"))); - -- cgit v1.1