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uml: dump core on panic

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Dump core after a panic.  This will provide better debugging information than
is currently available.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2007-05-06 14:51:39 -07:00 committed by Linus Torvalds
parent 990c55871b
commit 63843c265f
3 changed files with 8 additions and 1 deletions
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1
arch/um/include/os.h
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@ -279,6 +279,7 @@ extern int raw(int fd);
extern void setup_machinename(char *machine_out); extern void setup_machinename(char *machine_out);
extern void setup_hostinfo(char *buf, int len); extern void setup_hostinfo(char *buf, int len);
extern int setjmp_wrapper(void (*proc)(void *, void *), ...); extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
extern void os_dump_core(void);
/* time.c */ /* time.c */
#define BILLION (1000 * 1000 * 1000) #define BILLION (1000 * 1000 * 1000)

2
arch/um/kernel/um_arch.c
View file

@ -474,7 +474,7 @@ static int panic_exit(struct notifier_block *self, unsigned long unused1,
show_regs(&(current->thread.regs)); show_regs(&(current->thread.regs));
bust_spinlocks(0); bust_spinlocks(0);
uml_exitcode = 1; uml_exitcode = 1;
machine_halt(); os_dump_core();
return 0; return 0;
} }

6
arch/um/os-Linux/util.c
View file

@ -119,3 +119,9 @@ int setjmp_wrapper(void (*proc)(void *, void *), ...)
va_end(args); va_end(args);
return n; return n;
} }
void os_dump_core(void)
{
signal(SIGSEGV, SIG_DFL);
abort();
}