Messages in this thread Patch in this message | | | Subject | [patch 09/11] uml: add stack content to dumps | From | blaisorblade_spam@yahoo ... | Date | Thu, 13 Jan 2005 22:01:08 +0100 |
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Copy some code from i386 to print the stack content. Rough form yet, should work although.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it> ---
linux-2.6.10-rc-paolo/arch/um/kernel/sysrq.c | 40 +++++++++++++++++++++++---- 1 files changed, 35 insertions(+), 5 deletions(-)
diff -puN arch/um/kernel/sysrq.c~uml-add-stack-content-to-dumps arch/um/kernel/sysrq.c --- linux-2.6.10-rc/arch/um/kernel/sysrq.c~uml-add-stack-content-to-dumps 2004-11-30 18:32:12.000000000 +0100 +++ linux-2.6.10-rc-paolo/arch/um/kernel/sysrq.c 2004-11-30 20:27:06.540447816 +0100 @@ -15,11 +15,13 @@ void show_trace(unsigned long * stack) { /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from - * arch/i386/kernel/traps.c. */ + * arch/i386/kernel/traps.c, and then move this to sys-i386/sysrq.c.*/ unsigned long addr; - if (!stack) + if (!stack) { stack = (unsigned long*) &stack; + WARN_ON(1); + } printk("Call Trace: \n"); while (((long) stack & (THREAD_SIZE-1)) != 0) { @@ -34,7 +36,8 @@ void show_trace(unsigned long * stack) } /* - * The architecture-independent dump_stack generator + * stack dumps generator - this is used by arch-independent code. + * And this is identical to i386 currently. */ void dump_stack(void) { @@ -44,7 +47,34 @@ void dump_stack(void) } EXPORT_SYMBOL(dump_stack); -void show_stack(struct task_struct *task, unsigned long *sp) +/*Stolen from arch/i386/kernel/traps.c */ +static int kstack_depth_to_print = 24; + +/* This recently started being used in arch-independent code too, as in + * kernel/sched.c.*/ +void show_stack(struct task_struct *task, unsigned long *esp) { - show_trace(sp); + unsigned long *stack; + int i; + + if (esp == NULL) { + if (task != current) { + esp = (unsigned long *) KSTK_ESP(task); + /* Which one? No actual difference - just coding style.*/ + //esp = (unsigned long *) PT_REGS_IP(&task->thread.regs); + } else { + esp = (unsigned long *) &esp; + } + } + + stack = esp; + for(i = 0; i < kstack_depth_to_print; i++) { + if (kstack_end(stack)) + break; + if (i && ((i % 8) == 0)) + printk("\n "); + printk("%08lx ", *stack++); + } + + show_trace(esp); } _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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