예제 #1
0
static void aed_get_bt(struct task_struct *tsk, struct aee_process_bt *bt)
{
    struct stackframe frame;
    unsigned int stack_address;

    bt->nr_entries = 0;

    memset(&frame, 0, sizeof(struct stackframe));
    if (tsk != current) {
        frame.fp = thread_saved_fp(tsk);
        frame.sp = thread_saved_sp(tsk);
        frame.lr = thread_saved_pc(tsk);
        frame.pc = 0xffffffff;
    } else {
        register unsigned long current_sp asm("sp");

        frame.fp = (unsigned long)__builtin_frame_address(0);
        frame.sp = current_sp;
        frame.lr = (unsigned long)__builtin_return_address(0);
        frame.pc = (unsigned long)aed_get_bt;
    }
    stack_address = ALIGN(frame.sp, THREAD_SIZE);
    if ((stack_address >= (PAGE_OFFSET + THREAD_SIZE)) && virt_addr_valid(stack_address)) {
        aed_walk_stackframe(&frame, bt, stack_address);
    } else {
        LOGD("%s: Invalid sp value %lx\n", __func__, frame.sp);
    }
}
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.pc = thread_saved_pc(tsk);
	} else {
		register unsigned long current_sp asm("sp");
		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #3
0
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.pc = thread_saved_pc(tsk);
	} else {
		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_stack_pointer;
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
	frame.graph = tsk->curr_ret_stack;
#endif

	walk_stackframe(tsk, &frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #4
0
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {
#ifdef CONFIG_SMP

/* 20110630, [email protected], Merge Black DCM, Power Management. [UB_START] */
#if 1 
		/*
		 * What guarantees do we have here that 'tsk' is not
		 * running on another CPU?  For now, ignore it as we
		 * can't guarantee we won't explode.
		 */
		if (trace->nr_entries < trace->max_entries)
			trace->entries[trace->nr_entries++] = ULONG_MAX;
		return;
#else // old
/* 20110630, [email protected], Merge Black DCM, Power Management. [UB_END] */

		/*
		 * What guarantees do we have here that 'tsk' is not
		 * running on another CPU?  For now, ignore it as we
		 * can't guarantee we won't explode.
		 */
		BUG();

/* 20110630, [email protected], Merge Black DCM, Power Management. [UB_START] */
#endif
/* 20110630, [email protected], Merge Black DCM, Power Management. [UB_END] */

#else
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		/* recovered from the stack */
		frame.pc = thread_saved_pc(tsk);
#endif
	} else {
		register unsigned long current_sp asm ("sp");

		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #5
0
static struct pt_regs * unwind_get_regs(struct task_struct *tsk)
{
	struct stackframe frame;
	register unsigned long current_sp asm ("sp");
       int found = 0;
	//unsigned long  sc;
	
	if (!tsk)
		tsk = current;
		
       printk("tsk = %p,comm=%s,pid=%d,pgd=0x%p\n", tsk , tsk->comm , tsk->pid , tsk->mm->pgd );
	if (tsk == current) {
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)unwind_get_regs;
	} else {
		/* task blocked in __switch_to */
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		/*
		 * The function calling __switch_to cannot be a leaf function
		 * so LR is recovered from the stack.
		 */
		frame.lr = 0;
		frame.pc = thread_saved_pc(tsk);
	}

	while (1) {
		int urc;
		//unsigned long where = frame.pc;

		urc = unwind_frame(&frame);
		if (urc < 0)
			break;
		//dump_backtrace_entry(where, frame.pc, frame.sp - 4);
		if( frame.pc == (unsigned long)ret_fast_syscall ){
		        found = 1;
		        break;
		}
	}
	if( !found )
	        return NULL;
	#if 0
	//printk("FRAME:sp=0x%lx,pc=0x%lx,lr=0x%lx,fp=0x%lx\n" , frame.sp,frame.pc,frame.lr,frame.fp );
	//rk28_printk_mem((unsigned int*)(frame.sp-sizeof(struct pt_regs)),2*sizeof(struct pt_regs)/4+8, NULL );
	sc =*( (unsigned long*)(frame.sp-4));
	if( sc >= (unsigned long)&_text && sc < (unsigned long)&_end ){
	    print_symbol("sys call=%s\n",sc );
	}
	#endif
	return (struct pt_regs *)(frame.sp+8); // 8 for reg r4,r5 as fifth and sixth args.
}
예제 #6
0
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {

/* CORE-HC-ANR_Kernel_Stack-00*[ */
/*#ifdef CONFIG_SMP*/
#if defined(CONFIG_SMP) && !defined(CONFIG_FIH_DUMP_KERNEL_STACK)
		/*
		 * What guarantees do we have here that 'tsk' is not
		 * running on another CPU?  For now, ignore it as we
		 * can't guarantee we won't explode.
		 */
		if (trace->nr_entries < trace->max_entries)
			trace->entries[trace->nr_entries++] = ULONG_MAX;
		return;
#else
		
		pr_info("save_stack_trace_tsk: %s[%d] %s[%d]\r\n",
			current->comm, 
			smp_processor_id(), 
			tsk->comm, 
			task_thread_info(tsk)->cpu);
		
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		/* recovered from the stack */
		frame.pc = thread_saved_pc(tsk);
#endif
/* CORE-HC-ANR_Kernel_Stack-00*] */
	} else {
		register unsigned long current_sp asm ("sp");

		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
/* This must be noinline to so that our skip calculation works correctly */
static noinline void __save_stack_trace(struct task_struct *tsk,
	struct stack_trace *trace, unsigned int nosched)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;
	data.no_sched_functions = nosched;

	if (tsk != current) {
/* Bright Lee, 20130322, enable stack trace when android hang in debug stage { */
// #ifdef CONFIG_SMP
#if 0
/* } Bright Lee, 20130322 */
		/*
		 * What guarantees do we have here that 'tsk' is not
		 * running on another CPU?  For now, ignore it as we
		 * can't guarantee we won't explode.
		 */
		if (trace->nr_entries < trace->max_entries)
			trace->entries[trace->nr_entries++] = ULONG_MAX;
		return;
#else
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		/* recovered from the stack */
		frame.pc = thread_saved_pc(tsk);
#endif
	} else {
		register unsigned long current_sp asm ("sp");

		/* We don't want this function nor the caller */
		data.skip += 2;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)__save_stack_trace;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #8
0
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {
		/* enable call stack in smp arch */
#if defined(CONFIG_SMP) && !defined(CONFIG_HUAWEI_KERNEL)
		/*
		 * What guarantees do we have here that 'tsk' is not
		 * running on another CPU?  For now, ignore it as we
		 * can't guarantee we won't explode.
		 */
		if (trace->nr_entries < trace->max_entries)
			trace->entries[trace->nr_entries++] = ULONG_MAX;
		return;
#else
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		/* recovered from the stack */
		frame.pc = thread_saved_pc(tsk);
#endif
	} else {
		register unsigned long current_sp asm ("sp");

		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #9
0
void aee_dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
{
	struct stackframe frame;
	const register unsigned long current_sp asm("sp");

	pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);

	if (!tsk)
		tsk = current;

	if (regs) {
		frame.fp = regs->regs[29];
		frame.sp = regs->sp;
		frame.pc = regs->pc;
	} else if (tsk == current) {
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.pc = (unsigned long)aee_dump_backtrace;
	} else {
		/*
		 * task blocked in __switch_to
		 */
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.pc = thread_saved_pc(tsk);
	}

	aee_sram_fiq_log("Call trace:\n");
	while (1) {
		unsigned long where = frame.pc;
		int ret;

		ret = unwind_frame(&frame);
		if (ret < 0)
			break;
		dump_backtrace_entry(where, frame.sp);
	}
}
예제 #10
0
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;

	if (tsk != current) {
#ifdef CONFIG_SMP
		/*
		 * What guarantees do we have here that 'tsk'
		 * is not running on another CPU?
		 */
		/* 20101006 [email protected] temporary block because of reset */
		/* BUG(); */
		return;
#else
		data.no_sched_functions = 1;
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		/* recovered from the stack */
		frame.pc = thread_saved_pc(tsk);
#endif
	} else {
		register unsigned long current_sp asm ("sp");

		data.no_sched_functions = 0;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)save_stack_trace_tsk;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
/* This must be noinline to so that our skip calculation works correctly */
static noinline void __save_stack_trace(struct task_struct *tsk,
	struct stack_trace *trace, unsigned int nosched)
{
	struct stack_trace_data data;
	struct stackframe frame;

	data.trace = trace;
	data.skip = trace->skip;
	data.no_sched_functions = nosched;

	if (tsk != current) {
#ifdef CONFIG_SMP
		if (trace->nr_entries < trace->max_entries)
			trace->entries[trace->nr_entries++] = ULONG_MAX;
		return;
#else
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.lr = 0;		
		frame.pc = thread_saved_pc(tsk);
#endif
	} else {
		register unsigned long current_sp asm ("sp");

		/* We don't want this function nor the caller */
		data.skip += 2;
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)__save_stack_trace;
	}

	walk_stackframe(&frame, save_trace, &data);
	if (trace->nr_entries < trace->max_entries)
		trace->entries[trace->nr_entries++] = ULONG_MAX;
}
예제 #12
0
void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
{
	struct stackframe frame;
	unsigned long irq_stack_ptr;
	int skip;

	pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);

	if (!tsk)
		tsk = current;

	if (!try_get_task_stack(tsk))
		return;

	/*
	 * Switching between stacks is valid when tracing current and in
	 * non-preemptible context.
	 */
	if (tsk == current && !preemptible())
		irq_stack_ptr = IRQ_STACK_PTR(smp_processor_id());
	else
		irq_stack_ptr = 0;

	if (tsk == current) {
		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_stack_pointer;
		frame.pc = (unsigned long)dump_backtrace;
	} else {
		/*
		 * task blocked in __switch_to
		 */
		frame.fp = thread_saved_fp(tsk);
		frame.sp = thread_saved_sp(tsk);
		frame.pc = thread_saved_pc(tsk);
	}
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
	frame.graph = tsk->curr_ret_stack;
#endif

	skip = !!regs;
	printk("Call trace:\n");
	while (1) {
		unsigned long where = frame.pc;
		unsigned long stack;
		int ret;

		/* skip until specified stack frame */
		if (!skip) {
			dump_backtrace_entry(where);
		} else if (frame.fp == regs->regs[29]) {
			skip = 0;
			/*
			 * Mostly, this is the case where this function is
			 * called in panic/abort. As exception handler's
			 * stack frame does not contain the corresponding pc
			 * at which an exception has taken place, use regs->pc
			 * instead.
			 */
			dump_backtrace_entry(regs->pc);
		}
		ret = unwind_frame(tsk, &frame);
		if (ret < 0)
			break;
		stack = frame.sp;
		if (in_exception_text(where)) {
			/*
			 * If we switched to the irq_stack before calling this
			 * exception handler, then the pt_regs will be on the
			 * task stack. The easiest way to tell is if the large
			 * pt_regs would overlap with the end of the irq_stack.
			 */
			if (stack < irq_stack_ptr &&
			    (stack + sizeof(struct pt_regs)) > irq_stack_ptr)
				stack = IRQ_STACK_TO_TASK_STACK(irq_stack_ptr);

			dump_mem("", "Exception stack", stack,
				 stack + sizeof(struct pt_regs));
		}
	}

	put_task_stack(tsk);
}