void dump_trace(struct task_struct *task, struct pt_regs *regs, unsigned long *stack, unsigned long bp, const struct stacktrace_ops *ops, void *data) { int graph = 0; if (!task) task = current; if (!stack) { unsigned long dummy; stack = &dummy; if (task && task != current) stack = (unsigned long *)task->thread.sp; } #ifdef CONFIG_FRAME_POINTER if (!bp) { if (task == current) { /* Grab bp right from our regs */ get_bp(bp); } else { /* bp is the last reg pushed by switch_to */ bp = *(unsigned long *) task->thread.sp; } } #endif for (;;) { struct thread_info *context; context = (struct thread_info *) ((unsigned long)stack & (~(THREAD_SIZE - 1))); bp = print_context_stack(context, stack, bp, ops, data, NULL, &graph); stack = (unsigned long *)context->previous_esp; if (!stack) break; if (ops->stack(data, "IRQ") < 0) break; touch_nmi_watchdog(); } }
static unsigned long vtss_stack_walk( struct thread_info *tinfo, unsigned long *stack, unsigned long bp, const struct stacktrace_ops *ops, void *data, unsigned long *end, int *graph) { unsigned long* pbp = (unsigned long*)data; unsigned long kstart = (unsigned long)__START_KERNEL_map + ((CONFIG_PHYSICAL_START + (CONFIG_PHYSICAL_ALIGN - 1)) & ~(CONFIG_PHYSICAL_ALIGN - 1)); TRACE("bp=0x%p, stack=0x%p, end=0x%p", (void*)bp, stack, end); bp = print_context_stack(tinfo, stack, bp, ops, data, end, graph); if (pbp != NULL && bp < kstart) { TRACE("user bp=0x%p", (void*)bp); *pbp = bp; } return bp; }
void dump_trace(struct task_struct *task, struct pt_regs *regs, unsigned long *stack, unsigned long bp, const struct stacktrace_ops *ops, void *data) { const unsigned cpu = get_cpu(); unsigned long *irq_stack_end = (unsigned long *)per_cpu(irq_stack_ptr, cpu); unsigned used = 0; struct thread_info *tinfo; int graph = 0; if (!task) task = current; if (!stack) { unsigned long dummy; stack = &dummy; if (task && task != current) stack = (unsigned long *)task->thread.sp; } #ifdef CONFIG_FRAME_POINTER if (!bp) { if (task == current) { /* Grab bp right from our regs */ get_bp(bp); } else { /* bp is the last reg pushed by switch_to */ bp = *(unsigned long *) task->thread.sp; } } #endif /* * Print function call entries in all stacks, starting at the * current stack address. If the stacks consist of nested * exceptions */ tinfo = task_thread_info(task); for (;;) { char *id; unsigned long *estack_end; estack_end = in_exception_stack(cpu, (unsigned long)stack, &used, &id); if (estack_end) { if (ops->stack(data, id) < 0) break; bp = print_context_stack(tinfo, stack, bp, ops, data, estack_end, &graph); ops->stack(data, "<EOE>"); /* * We link to the next stack via the * second-to-last pointer (index -2 to end) in the * exception stack: */ stack = (unsigned long *) estack_end[-2]; continue; } if (irq_stack_end) { unsigned long *irq_stack; irq_stack = irq_stack_end - (IRQ_STACK_SIZE - 64) / sizeof(*irq_stack); if (stack >= irq_stack && stack < irq_stack_end) { if (ops->stack(data, "IRQ") < 0) break; bp = print_context_stack(tinfo, stack, bp, ops, data, irq_stack_end, &graph); /* * We link to the next stack (which would be * the process stack normally) the last * pointer (index -1 to end) in the IRQ stack: */ stack = (unsigned long *) (irq_stack_end[-1]); irq_stack_end = NULL; ops->stack(data, "EOI"); continue; } } break; } /* * This handles the process stack: */ bp = print_context_stack(tinfo, stack, bp, ops, data, NULL, &graph); put_cpu(); }