Re: [S390] minor fault path optimization.

2007-03-19 Thread Andi Kleen
On Monday 19 March 2007 14:31, Christoph Hellwig wrote: > On Mon, Mar 19, 2007 at 02:02:06PM +0100, Martin Schwidefsky wrote: > > From: Martin Schwidefsky <[EMAIL PROTECTED]> > > > > [S390] minor fault path optimization. > > > > The minor fault path

Re: [S390] minor fault path optimization.

2007-03-19 Thread Christoph Hellwig
On Mon, Mar 19, 2007 at 02:02:06PM +0100, Martin Schwidefsky wrote: > From: Martin Schwidefsky <[EMAIL PROTECTED]> > > [S390] minor fault path optimization. > > The minor fault path has grown a lot in terms of cycles. In particular > the kprobes hook is very costly. Opt

[S390] minor fault path optimization.

2007-03-19 Thread Martin Schwidefsky
From: Martin Schwidefsky <[EMAIL PROTECTED]> [S390] minor fault path optimization. The minor fault path has grown a lot in terms of cycles. In particular the kprobes hook is very costly. Optimize the path to save a couple of cycles. If kprobes is enabled more than 300 cycles can be avoi