Re: [Qemu-devel] [RFC PATCH 4/6] ftrace: Allow stealing pages from pipe buffer

2012-07-30 Thread Steven Rostedt
On Tue, 2012-07-24 at 11:37 +0900, Yoshihiro YUNOMAE wrote: From: Masami Hiramatsu masami.hiramatsu...@hitachi.com Use generic steal operation on pipe buffer to allow stealing ring buffer's read page from pipe buffer. Note that this could reduce the performance of splice on the

[Qemu-devel] [RFC PATCH 4/6] ftrace: Allow stealing pages from pipe buffer

2012-07-23 Thread Yoshihiro YUNOMAE
From: Masami Hiramatsu masami.hiramatsu...@hitachi.com Use generic steal operation on pipe buffer to allow stealing ring buffer's read page from pipe buffer. Note that this could reduce the performance of splice on the splice_write side operation without affinity setting. Since the ring buffer's