tracing: Have trace buffer point back to trace_array

The trace buffer has a descriptor pointer that goes back to the trace array. But it was never assigned. Luckily, nothing uses it (yet), but it will in the future. Although nothing currently uses this, if any of the new features get backported to older kernels, and because this is such a simple change, I'm marking it for stable too.

Steven Rostedt (Red Hat) committed 12 years ago

Commit dced3411 parent a4c35ed1 file · +2 −0Browse files

Unified · Split

kernel/trace/trace.c+2−0

@@ -5914,6 +5914,8 @@ allocate_trace_buffer(struct trace_array tr, struct trace_buffer buf, int size · 5913 unmodified lines
5914		5914
5915	rb_flags = trace_flags & TRACE_ITER_OVERWRITE ? RB_FL_OVERWRITE : 0;	5915	rb_flags = trace_flags & TRACE_ITER_OVERWRITE ? RB_FL_OVERWRITE : 0;
5916		5916
		5917	buf->tr = tr;
		5918
5917	buf->buffer = ring_buffer_alloc(size, rb_flags);	5919	buf->buffer = ring_buffer_alloc(size, rb_flags);
5918	if (!buf->buffer)	5920	if (!buf->buffer)
5919	return -ENOMEM;	5921	return -ENOMEM;