tree b28047205b75d7e06ecf3eb0aca08c056ed4f51c
parent d1e7e02f30be672c6f6ee40908be83877a0d49d1
author Lai Jiangshan <laijs@cn.fujitsu.com> 1238656619 +0800
committer Ingo Molnar <mingo@elte.hu> 1239360283 +0200

tracing: allocate page when needed

Impact: Cleanup

Sometimes, we open trace_pipe_raw, but we don't read(2) it,
we just splice(2) it, thus, the page is not used.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
LKML-Reference: <49D4666B.4010608@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>