linux.git/arch/x86/kernel/dumpstack_64.c, branch v2.6.28

sysfs: crash debugging

2008-10-16T16:24:41+00:00

Print the name of the last-accessed sysfs file when we oops, to help track
down oopses which occur in sysfs store/read handlers.  Because these oopses
tend to not leave any trace of the offending code in the stack traces.

Cc: Kay Sievers 
Cc: Mathieu Desnoyers 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

dumpstack: x86: various small unification steps, fix

2008-10-13T08:33:49+00:00

After "dumpstack: x86: various small unification steps", the
assembler gives the following compile error. The error is in
dumpstack_64.c.

{standard input}: Assembler messages:
{standard input}:720: Error: Incorrect register `%rbx' used with `l' suffix
{standard input}:1340: Error: Incorrect register `%r12' used with `l' suffix

Indeed the suffix in get_bp() was wrong.

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

dumpstack: x86: various small unification steps

2008-10-13T08:33:45+00:00

- define STACKSLOTS_PER_LINE and use it
 - define get_bp macro to hide the %%ebp/%%rbp difference
 - i386: check task==NULL in dump_trace, like x86_64
 - i386: show_trace(NULL, ...) uses current automatically
 - x86_64: use [#%d] for die_counter, like i386
 - whitespace and comments

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

dumpstack: x86: use log_lvl and unify trace formatting

2008-10-13T08:33:43+00:00

- x86: Write log_lvl strings if available
 - start raw stack dumps on new line
 - i386: Remove extra indentation for raw stack dumps

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

dumptrace: x86: consistently include loglevel, print stack switch

2008-10-13T08:33:42+00:00

- i386 and x86_64: always printk the 'data' parameter
 - i386: announce stack switch (irq -> normal)
 - i386: check if there is a stack switch before announcing it

There is a warning that 'context' might come out corrupt in early
boot. If this is true it should be fixed, not worked around.

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

dumpstack: x86: add "end" parameter to valid_stack_ptr and print_context_stack

2008-10-13T08:33:41+00:00

- Add "end" parameter to valid_stack_ptr and print_context_stack
 - use sizeof(long) as the size of a word on the stack

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

dumpstack: x86: make printk_address equal

2008-10-13T08:33:40+00:00

- x86_64: use %p to print an address
 - make i386-version the same as the above

The result should be the same on x86_64; on i386 the
output only changes if CONFIG_KALLSYMS is turned off,
in which case the address is printed twice.

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar

x86_64: split out dumpstack code from traps_64.c

2008-10-13T08:33:17+00:00

The dumpstack code is logically quite independent from the
hardware traps. Split it out into its own file.

Signed-off-by: Alexander van Heukelum 
Signed-off-by: Ingo Molnar