diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d0a16fe03fef..239dbb9627ca 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -597,7 +597,7 @@ extern int __trace_puts(unsigned long ip, const char *str, int size); __trace_puts(_THIS_IP_, str, strlen(str)); \ }) -extern void trace_dump_stack(void); +extern void trace_dump_stack(int skip); /* * The double __builtin_constant_p is because gcc will give us an error diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index c5b844621562..8aa53213201f 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1657,8 +1657,9 @@ void __trace_stack(struct trace_array *tr, unsigned long flags, int skip, /** * trace_dump_stack - record a stack back trace in the trace buffer + * @skip: Number of functions to skip (helper handlers) */ -void trace_dump_stack(void) +void trace_dump_stack(int skip) { unsigned long flags; @@ -1667,9 +1668,13 @@ void trace_dump_stack(void) local_save_flags(flags); - /* skipping 3 traces, seems to get us at the caller of this function */ - __ftrace_trace_stack(global_trace.trace_buffer.buffer, flags, 3, - preempt_count(), NULL); + /* + * Skip 3 more, seems to get us at the caller of + * this function. + */ + skip += 3; + __ftrace_trace_stack(global_trace.trace_buffer.buffer, + flags, skip, preempt_count(), NULL); } static DEFINE_PER_CPU(int, user_stack_count);