Commit d931369b authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt
Browse files

tracing: Add stack dump to trace_printk if stacktrace option is set 



If the ftrace stacktrace option is set, then add the stack dumps to
trace_printk.

Requested-by: default avatarPeter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent dfaa9e2c

kernel/trace/trace.c

+6 −2
Original line number Diff line number Diff line
@@ -1392,8 +1392,10 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args) 
	entry->fmt			= fmt;



	memcpy(entry->buf, trace_buf, sizeof(u32) * len);

	if (!filter_check_discard(call, entry, buffer, event))

	if (!filter_check_discard(call, entry, buffer, event)) {

		ring_buffer_unlock_commit(buffer, event);

		ftrace_trace_stack(buffer, flags, 6, pc);

	}



out_unlock:

	arch_spin_unlock(&trace_buf_lock);
@@ -1466,8 +1468,10 @@ int trace_array_vprintk(struct trace_array *tr, 


	memcpy(&entry->buf, trace_buf, len);

	entry->buf[len] = '\0';

	if (!filter_check_discard(call, entry, buffer, event))

	if (!filter_check_discard(call, entry, buffer, event)) {

		ring_buffer_unlock_commit(buffer, event);

		ftrace_trace_stack(buffer, irq_flags, 6, pc);

	}



 out_unlock:

	arch_spin_unlock(&trace_buf_lock);