From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24529 invoked by alias); 17 Nov 2006 15:05:05 -0000 Received: (qmail 24519 invoked by uid 22791); 17 Nov 2006 15:05:03 -0000 X-Spam-Status: No, hits=-2.5 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,TW_DJ X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 17 Nov 2006 15:04:54 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id kAHF4qgD023977; Fri, 17 Nov 2006 10:04:52 -0500 Received: from pobox.devel.redhat.com (pobox.devel.redhat.com [10.11.255.8]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id kAHF4pVq013674; Fri, 17 Nov 2006 10:04:51 -0500 Received: from [10.11.14.220] (vpn-14-220.rdu.redhat.com [10.11.14.220]) by pobox.devel.redhat.com (8.13.1/8.13.1) with ESMTP id kAHF4mgh009390; Fri, 17 Nov 2006 10:04:49 -0500 Subject: Re: [PATCH][kprobe] enabling booster on the preemptible kernel From: Ingo Molnar To: Masami Hiramatsu Cc: "Keshavamurthy, Anil S" , Ananth N Mavinakayanahalli , "bibo,mao" , Prasanna S Panchamukhi , Andrew Morton , linux-kernel , SystemTAP , Yumiko Sugita , Satoshi Oshima , Hideo Aoki In-Reply-To: <455DAC83.3030505@hitachi.com> References: <455DAC83.3030505@hitachi.com> Content-Type: text/plain Date: Fri, 17 Nov 2006 15:40:00 -0000 Message-Id: <1163775843.8789.55.camel@earth> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1.1 (2.8.1.1-3.fc6) Content-Transfer-Encoding: 7bit Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q4/txt/msg00458.txt.bz2 On Fri, 2006-11-17 at 21:35 +0900, Masami Hiramatsu wrote: > From: Masami Hiramatsu > > This patch enables the kprobe-booster on the preemptible kernel. > For this purpose, I introduced a kind of garbage collector of > the instruction slots. This garbage collector checks safety before > releasing the garbage slots. > > Signed-off-by: Masami Hiramatsu nice work - looks really sensible! This opens the door to djprobes (or rather, to the transparent kprobes speedup that used to be a separate interface), right? Acked-by: Ingo Molnar Ingo