linux/arch/s390
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
..
appldata [S390] Fix yet another two section mismatches. 2007-06-19 13:10:19 +02:00
boot [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh 2005-06-23 09:45:07 -07:00
crypto [S390] Fixed comment typo. 2007-07-10 11:24:42 +02:00
hypfs [S390] Add exception handler for diagnose 224 2007-05-31 17:38:10 +02:00
kernel generic bug: use show_regs() instead of dump_stack() 2007-07-16 09:05:51 -07:00
lib [S390] Bogomips calculation for 64 bit. 2007-07-10 11:24:47 +02:00
math-emu [S390] Calibrate delay and bogomips. 2007-02-05 21:18:31 +01:00
mm [S390] More verbose show_mem() like other architectures. 2007-05-21 11:25:29 +02:00
oprofile [PATCH] s390: add oprofile callgraph support 2006-01-06 08:33:50 -08:00
Kconfig [S390] Kconfig: use common Kconfig files for s390. 2007-05-10 15:46:08 +02:00
Kconfig.debug [PATCH] lockdep: irqtrace subsystem, s390 support 2006-07-03 15:27:03 -07:00
Makefile pass -msize-long to sparse on s390 2007-07-15 16:40:52 -07:00
defconfig [S390] update default configuration. 2007-05-10 15:46:08 +02:00