hi: 2011/1/3 loody <miloody@xxxxxxxxx>: > hi all: > > 2011/1/3 Sowmya Sridharan <sowmya.sridharan@xxxxxxx>: >> >> Hi, >> >> I was able to check it in 2.6.36 version of kernel, and it is defined in >> traps.c. >> http://lxr.linux.no/linux+v2.6.36/arch/mips/kernel/traps.c#L205 >> >> dump_stack() calls show_backtrace function which had been show_trace in the >> earlier kernel versions. >> I compared between 2.6.14 and the latest version, and here are the >> differences: >> ------------------------------------------------------------------------------- >> http://lxr.linux.no/linux+v2.6.14/arch/mips/kernel/traps.c#L110 >> function: show_trace >> while (!kstack_end(stack)) { >> addr = *stack++; >> if (__kernel_text_address(addr)) { >> printk(" [<%0*lx>] ", field, addr); >> print_symbol("%s\n", addr); >> } >> } >> --------------------------------------------------------------------------------- >> In the latest kernel, show_backtrace function is used, which does the same >> thing, but through different functions >> http://lxr.linux.no/linux+v2.6.36/arch/mips/kernel/traps.c#L126 >> function: show_backtrace >> printk("Call Trace:\n"); >> do { >> print_ip_sym(pc); >> pc = unwind_stack(task, &sp, pc, &ra); >> } while (pc); >> >> >> Regards, >> Sowmya > thanks for your kind help, that is what I want. > previously, I only see the address instead of function name, but after > I select CONFIG_KALLSYMS as Y, I can see the function names also. > BTW, what is the mechanism that kernel take to find out the function name? from log such as: <80128580>] do_softirq+0x48/0x68 i know 0x48 is the offset of do_softirq, but how can I locate precise what the offset 0x48 of do_softirq is? "objdump -s"? Regards, miloody _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
