tracing: fix seq read from trace files



The buffer used by trace_seq was updated incorrectly. Instead
of consuming what was actually read, it consumed the rest of the
buffer on reads.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

parent 2dc5d12b

kernel/trace/trace.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -361,7 +361,7 @@ ssize_t trace_seq_to_user(struct trace_seq s, char __user ubuf, size_t cnt)

		cnt -= ret;

		s->readpos += len;
		s->readpos += cnt;
		return cnt;
		}

		@@ -380,7 +380,7 @@ ssize_t trace_seq_to_buffer(struct trace_seq s, void buf, size_t cnt)
		if (!ret)
		return -EFAULT;

		s->readpos += len;
		s->readpos += cnt;
		return cnt;
		}