Messages in this thread Patch in this message | | | Subject | [patch 12/20] uml:use kallsyms when dumping stack | From | blaisorblade_spam@yahoo ... | Date | Thu, 04 Nov 2004 00:17:42 +0100 |
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This patch makes UML use print_symbol() when dumping the stack. It is not yet complete (the i386 version uses the frame pointers to walk the stack, for instance), but should be at least enough.
Also, it uses bust_spinlock() when dumping errors to help them reach the console. This appears not to be enough - however I analyzed the UML console code, and it seems that UML console don't get flushed *at all* when exiting.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it> ---
vanilla-linux-2.6.9-paolo/arch/um/kernel/sysrq.c | 13 ++++++------- vanilla-linux-2.6.9-paolo/arch/um/kernel/um_arch.c | 6 +++--- 2 files changed, 9 insertions(+), 10 deletions(-)
diff -puN arch/um/kernel/sysrq.c~uml-use-kallsyms arch/um/kernel/sysrq.c --- vanilla-linux-2.6.9/arch/um/kernel/sysrq.c~uml-use-kallsyms 2004-11-03 23:45:00.242401880 +0100 +++ vanilla-linux-2.6.9-paolo/arch/um/kernel/sysrq.c 2004-11-03 23:45:00.246401272 +0100 @@ -14,23 +14,23 @@ void show_trace(unsigned long * stack) { - int i; + /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from + * arch/i386/kernel/traps.c. */ unsigned long addr; if (!stack) stack = (unsigned long*) &stack; - printk("Call Trace:\n"); - i = 1; + printk("Call Trace: \n"); while (((long) stack & (THREAD_SIZE-1)) != 0) { addr = *stack++; if (__kernel_text_address(addr)) { - printk("[<%08lx>] ", addr); - print_symbol("%s", addr); + printk(" [<%08lx>]", addr); + print_symbol(" %s", addr); printk("\n"); - i++; } } + printk("\n"); } /* @@ -48,4 +48,3 @@ void show_stack(struct task_struct *task { show_trace(sp); } - diff -puN arch/um/kernel/um_arch.c~uml-use-kallsyms arch/um/kernel/um_arch.c --- vanilla-linux-2.6.9/arch/um/kernel/um_arch.c~uml-use-kallsyms 2004-11-03 23:45:00.243401728 +0100 +++ vanilla-linux-2.6.9-paolo/arch/um/kernel/um_arch.c 2004-11-03 23:45:00.246401272 +0100 @@ -405,9 +405,9 @@ extern int uml_exitcode; static int panic_exit(struct notifier_block *self, unsigned long unused1, void *unused2) { -#ifdef CONFIG_MAGIC_SYSRQ - handle_sysrq('p', ¤t->thread.regs, NULL); -#endif + bust_spinlocks(1); + show_regs(&(current->thread.regs)); + bust_spinlocks(0); uml_exitcode = 1; machine_halt(); return(0); _ - 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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