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Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support
- From: Frederic Weisbecker <fweisbec at gmail dot com>
- To: Masami Hiramatsu <mhiramat at redhat dot com>, Ingo Molnar <mingo at elte dot hu>
- Cc: Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, lkml <linux-kernel at vger dot kernel dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>, Christoph Hellwig <hch at infradead dot org>, Steven Rostedt <rostedt at goodmis dot org>, "H. Peter Anvin" <hpa at zytor dot com>, Anders Kaseorg <andersk at ksplice dot com>, Tim Abbott <tabbott at ksplice dot com>, Andi Kleen <andi at firstfloor dot org>, Jason Baron <jbaron at redhat dot com>, Mathieu Desnoyers <compudj at krystal dot dyndns dot org>, systemtap <systemtap at sources dot redhat dot com>, DLE <dle-develop at lists dot sourceforge dot net>
- Date: Tue, 23 Feb 2010 18:05:20 +0100
- Subject: Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support
- References: <20100218221247.19637.80088.stgit@dhcp-100-2-132.bos.redhat.com> <4B830FDB.7010202@redhat.com>
On Mon, Feb 22, 2010 at 06:14:35PM -0500, Masami Hiramatsu wrote:
> Masami Hiramatsu wrote:
> > Hi Ingo,
> >
> > Here are the patchset of the kprobes jump optimization v10
> > (a.k.a. Djprobe). This version just updated a document,
> > and applicable for 2.6.33-rc8-tip.
>
> BTW, this optimization is automatically done in kprobes.
> (no other tools/changes are required for it)
> This means all users including perf-probe have a benefit
> from this feature just by configuring CONFIG_OPTPROBES=y :)
> So it's a part of perf-probe/kprobe-tracer enhancement, IMHO.
>
> Thank you,
Yep. I guess we can give it a try for 2.6.34.
Ingo?