Commit 8b4b6707 authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial

* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
  fixed path to moved file in include/linux/device.h
  Fix spelling in E1000_DISABLE_PACKET_SPLIT Kconfig description
  Documentation/dvb/get_dvb_firmware: fix firmware URL
  Documentation: Update to BUG-HUNTING
  Remove superfluous NOTIFY_COOKIE_LEN define
  add "tags" to .gitignore
  Fix "frist", "fisrt", typos
  fix rwlock usage example
  It's UTF-8
parents d04ef3a7 116f232b
......@@ -16,6 +16,7 @@
#
# Top-level generic files
#
tags
vmlinux*
System.map
Module.symvers
......
Table of contents
=================
Last updated: 20 December 2005
Contents
========
- Introduction
- Devices not appearing
- Finding patch that caused a bug
-- Finding using git-bisect
-- Finding it the old way
- Fixing the bug
Introduction
============
Always try the latest kernel from kernel.org and build from source. If you are
not confident in doing that please report the bug to your distribution vendor
instead of to a kernel developer.
Finding bugs is not always easy. Have a go though. If you can't find it don't
give up. Report as much as you have found to the relevant maintainer. See
MAINTAINERS for who that is for the subsystem you have worked on.
Before you submit a bug report read REPORTING-BUGS.
Devices not appearing
=====================
Often this is caused by udev. Check that first before blaming it on the
kernel.
Finding patch that caused a bug
===============================
Finding using git-bisect
------------------------
Using the provided tools with git makes finding bugs easy provided the bug is
reproducible.
Steps to do it:
- start using git for the kernel source
- read the man page for git-bisect
- have fun
Finding it the old way
----------------------
[Sat Mar 2 10:32:33 PST 1996 KERNEL_BUG-HOWTO lm@sgi.com (Larry McVoy)]
This is how to track down a bug if you know nothing about kernel hacking.
......@@ -90,3 +143,63 @@ it does work and it lets non-hackers help fix bugs. And it is cool
because Linux snapshots will let you do this - something that you can't
do with vendor supplied releases.
Fixing the bug
==============
Nobody is going to tell you how to fix bugs. Seriously. You need to work it
out. But below are some hints on how to use the tools.
To debug a kernel, use objdump and look for the hex offset from the crash
output to find the valid line of code/assembler. Without debug symbols, you
will see the assembler code for the routine shown, but if your kernel has
debug symbols the C code will also be available. (Debug symbols can be enabled
in the kernel hacking menu of the menu configuration.) For example:
objdump -r -S -l --disassemble net/dccp/ipv4.o
NB.: you need to be at the top level of the kernel tree for this to pick up
your C files.
If you don't have access to the code you can also debug on some crash dumps
e.g. crash dump output as shown by Dave Miller.
> EIP is at ip_queue_xmit+0x14/0x4c0
> ...
> Code: 44 24 04 e8 6f 05 00 00 e9 e8 fe ff ff 8d 76 00 8d bc 27 00 00
> 00 00 55 57 56 53 81 ec bc 00 00 00 8b ac 24 d0 00 00 00 8b 5d 08
> <8b> 83 3c 01 00 00 89 44 24 14 8b 45 28 85 c0 89 44 24 18 0f 85
>
> Put the bytes into a "foo.s" file like this:
>
> .text
> .globl foo
> foo:
> .byte .... /* bytes from Code: part of OOPS dump */
>
> Compile it with "gcc -c -o foo.o foo.s" then look at the output of
> "objdump --disassemble foo.o".
>
> Output:
>
> ip_queue_xmit:
> push %ebp
> push %edi
> push %esi
> push %ebx
> sub $0xbc, %esp
> mov 0xd0(%esp), %ebp ! %ebp = arg0 (skb)
> mov 0x8(%ebp), %ebx ! %ebx = skb->sk
> mov 0x13c(%ebx), %eax ! %eax = inet_sk(sk)->opt
Another very useful option of the Kernel Hacking section in menuconfig is
Debug memory allocations. This will help you see whether data has been
initialised and not set before use etc. To see the values that get assigned
with this look at mm/slab.c and search for POISON_INUSE. When using this an
Oops will often show the poisoned data instead of zero which is the default.
Once you have worked out a fix please submit it upstream. After all open
source is about sharing what you do and don't you want to be recognised for
your genius?
Please do read Documentation/SubmittingPatches though to help your code get
accepted.
......@@ -246,7 +246,7 @@ sub vp7041 {
}
sub dibusb {
my $url = "http://www.linuxtv.org/downloads/firmware/dvb-dibusb-5.0.0.11.fw";
my $url = "http://www.linuxtv.org/downloads/firmware/dvb-usb-dibusb-5.0.0.11.fw";
my $outfile = "dvb-dibusb-5.0.0.11.fw";
my $hash = "fa490295a527360ca16dcdf3224ca243";
......
......@@ -9,9 +9,9 @@ when using discs encoded using Microsoft's Joliet extensions.
iocharset=name Character set to use for converting from Unicode to
ASCII. Joliet filenames are stored in Unicode format, but
Unix for the most part doesn't know how to deal with Unicode.
There is also an option of doing UTF8 translations with the
There is also an option of doing UTF-8 translations with the
utf8 option.
utf8 Encode Unicode names in UTF8 format. Default is no.
utf8 Encode Unicode names in UTF-8 format. Default is no.
Mount options unique to the isofs filesystem.
block=512 Set the block size for the disk to 512 bytes
......
......@@ -6,7 +6,7 @@ The following mount options are supported:
iocharset=name Character set to use for converting from Unicode to
ASCII. The default is to do no conversion. Use
iocharset=utf8 for UTF8 translations. This requires
iocharset=utf8 for UTF-8 translations. This requires
CONFIG_NLS_UTF8 to be set in the kernel .config file.
iocharset=none specifies the default behavior explicitly.
......
......@@ -28,16 +28,16 @@ iocharset=name -- Character set to use for converting between the
know how to deal with Unicode.
By default, FAT_DEFAULT_IOCHARSET setting is used.
There is also an option of doing UTF8 translations
There is also an option of doing UTF-8 translations
with the utf8 option.
NOTE: "iocharset=utf8" is not recommended. If unsure,
you should consider the following option instead.
utf8=<bool> -- UTF8 is the filesystem safe version of Unicode that
utf8=<bool> -- UTF-8 is the filesystem safe version of Unicode that
is used by the console. It can be be enabled for the
filesystem with this option. If 'uni_xlate' gets set,
UTF8 gets disabled.
UTF-8 gets disabled.
uni_xlate=<bool> -- Translate unhandled Unicode characters to special
escaped sequences. This would let you backup and
......
......@@ -9,7 +9,7 @@ removed soon. So for any new code dynamic initialization should be used:
static int __init xxx_init(void)
{
spin_lock_init(&xxx_lock);
rw_lock_init(&xxx_rw_lock);
rwlock_init(&xxx_rw_lock);
...
}
......
......@@ -326,7 +326,7 @@ EXPORT_SYMBOL_GPL(platform_device_register);
* platform_device_unregister - unregister a platform-level device
* @pdev: platform device we're unregistering
*
* Unregistration is done in 2 steps. Fisrt we release all resources
* Unregistration is done in 2 steps. First we release all resources
* and remove it from the subsystem, then we drop reference count by
* calling platform_device_put().
*/
......
......@@ -2137,7 +2137,7 @@ static void start_io( ctlr_info_t *h)
break;
}
/* Get the frist entry from the Request Q */
/* Get the first entry from the Request Q */
removeQ(&(h->reqQ), c);
h->Qdepth--;
......
......@@ -1914,7 +1914,7 @@ config E1000_DISABLE_PACKET_SPLIT
depends on E1000
help
Say Y here if you want to use the legacy receive path for PCI express
hadware.
hardware.
If in doubt, say N.
......
......@@ -1404,7 +1404,7 @@ add_claw_reads(struct net_device *dev, struct ccwbk* p_first,
if ( privptr-> p_read_active_first ==NULL ) {
#ifdef DEBUGMSG
printk(KERN_INFO "%s:%s p_read_active_frist == NULL \n",
printk(KERN_INFO "%s:%s p_read_active_first == NULL \n",
dev->name,__FUNCTION__);
printk(KERN_INFO "%s:%s Read active first/last changed \n",
dev->name,__FUNCTION__);
......
......@@ -902,7 +902,7 @@ static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
int ret;
/*
* Frist wait for all commands to complete
* First wait for all commands to complete
*/
ret = megasas_generic_reset(scmd);
......
......@@ -561,7 +561,7 @@ befs_utf2nls(struct super_block *sb, const char *in,
* @sb: Superblock
* @src: Input string buffer in NLS format
* @srclen: Length of input string in bytes
* @dest: The output string in UTF8 format
* @dest: The output string in UTF-8 format
* @destlen: Length of the output buffer
*
* Converts input string @src, which is in the format of the loaded NLS map,
......
......@@ -160,7 +160,7 @@ improperly zeroed buffer in CIFS Unix extensions set times call.
Version 1.25
------------
Fix internationalization problem in cifs readdir with filenames that map to
longer UTF8 strings than the string on the wire was in Unicode. Add workaround
longer UTF-8 strings than the string on the wire was in Unicode. Add workaround
for readdir to netapp servers. Fix search rewind (seek into readdir to return
non-consecutive entries). Do not do readdir when server negotiates
buffer size to small to fit filename. Add support for reading POSIX ACLs from
......
......@@ -114,7 +114,7 @@ static inline int fat_get_entry(struct inode *dir, loff_t *pos,
}
/*
* Convert Unicode 16 to UTF8, translated Unicode, or ASCII.
* Convert Unicode 16 to UTF-8, translated Unicode, or ASCII.
* If uni_xlate is enabled and we can't get a 1:1 conversion, use a
* colon as an escape character since it is normally invalid on the vfat
* filesystem. The following four characters are the hexadecimal digits
......
......@@ -1101,7 +1101,7 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
return -EINVAL;
}
}
/* UTF8 doesn't provide FAT semantics */
/* UTF-8 doesn't provide FAT semantics */
if (!strcmp(opts->iocharset, "utf8")) {
printk(KERN_ERR "FAT: utf8 is not a recommended IO charset"
" for FAT filesystems, filesystem will be case sensitive!\n");
......
......@@ -11,7 +11,7 @@
#include "isofs.h"
/*
* Convert Unicode 16 to UTF8 or ASCII.
* Convert Unicode 16 to UTF-8 or ASCII.
*/
static int
uni16_to_x8(unsigned char *ascii, u16 *uni, int len, struct nls_table *nls)
......
......@@ -491,7 +491,7 @@ config NLS_KOI8_U
(koi8-u) and Belarusian (koi8-ru) character sets.
config NLS_UTF8
tristate "NLS UTF8"
tristate "NLS UTF-8"
depends on NLS
help
If you want to display filenames with native language characters
......
......@@ -77,7 +77,7 @@ struct termios {
#define IXANY 0004000 /* Any character will restart after stop. */
#define IXOFF 0010000 /* Enable start/stop input control. */
#define IMAXBEL 0020000 /* Ring bell when input queue is full. */
#define IUTF8 0040000 /* Input is UTF8 */
#define IUTF8 0040000 /* Input is UTF-8 */
/* c_oflag bits */
#define OPOST 0000001 /* Perform output processing. */
......
......@@ -400,7 +400,7 @@ extern struct device * get_device(struct device * dev);
extern void put_device(struct device * dev);
/* drivers/base/power.c */
/* drivers/base/power/shutdown.c */
extern void device_shutdown(void);
......
......@@ -199,7 +199,7 @@ struct fat_mount_options {
sys_immutable:1, /* set = system files are immutable */
dotsOK:1, /* set = hidden and system files are named '.filename' */
isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
utf8:1, /* Use of UTF8 character set (Default) */
utf8:1, /* Use of UTF-8 character set (Default) */
unicode_xlate:1, /* create escape sequences for unhandled Unicode */
numtail:1, /* Does first alias have a numeric '~1' type tail? */
atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */
......
......@@ -51,7 +51,6 @@
#define HARD_MSGMAX (131072/sizeof(void*))
#define DFLT_MSGSIZEMAX 8192 /* max message size */
#define NOTIFY_COOKIE_LEN 32
struct ext_wait_queue { /* queue of sleeping tasks */
struct task_struct *task;
......
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