linux/arch/ppc
Heiko Carstens 608e261968 generic bug: use show_regs() instead of dump_stack()
The current generic bug implementation has a call to dump_stack() in case a
WARN_ON(whatever) gets hit.  Since report_bug(), which calls dump_stack(),
gets called from an exception handler we can do better: just pass the
pt_regs structure to report_bug() and pass it to show_regs() in case of a
warning.  This will give more debug informations like register contents,
etc...  In addition this avoids some pointless lines that dump_stack()
emits, since it includes a stack backtrace of the exception handler which
is of no interest in case of a warning.  E.g.  on s390 the following lines
are currently always present in a stack backtrace if dump_stack() gets
called from report_bug():

 [<000000000001517a>] show_trace+0x92/0xe8)
 [<0000000000015270>] show_stack+0xa0/0xd0
 [<00000000000152ce>] dump_stack+0x2e/0x3c
 [<0000000000195450>] report_bug+0x98/0xf8
 [<0000000000016cc8>] illegal_op+0x1fc/0x21c
 [<00000000000227d6>] sysc_return+0x0/0x10

Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:51 -07:00
..
4xx_io [POWERPC] Spelling fixes: arch/ppc/ 2007-05-12 11:32:49 +10:00
8xx_io [NET]: Kill eth_copy_and_sum(). 2007-07-10 22:08:12 -07:00
8260_io [NET]: Kill eth_copy_and_sum(). 2007-07-10 22:08:12 -07:00
amiga Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
boot [POWERPC] Spelling fixes: arch/ppc/ 2007-05-12 11:32:49 +10:00
configs [PPC] MPC8272 ADS compile fixed, defconfig refreshed. 2007-04-12 12:36:45 -05:00
kernel generic bug: use show_regs() instead of dump_stack() 2007-07-16 09:05:51 -07:00
lib [POWERPC] User rheap from arch/powerpc/lib 2007-05-09 23:28:17 -05:00
mm [PPC] Fix modpost warning 2007-05-23 07:59:06 -05:00
platforms [POWERPC] Spelling fixes: arch/ppc/ 2007-05-12 11:32:49 +10:00
syslib sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
xmon [POWERPC] PPC: Use ARRAY_SIZE macro when appropriate 2007-02-08 16:08:25 +11:00
.gitignore [POWERPC] Add files build to .gitignore 2006-12-04 20:41:29 +11:00
Kconfig PCI: Only build PCI syscalls on architectures that want them 2007-07-11 16:02:13 -07:00
Kconfig.debug ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc 2006-03-28 10:22:10 +11:00
Makefile Merge branch '85xx' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc 2006-03-28 17:03:19 +11:00