Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752612Ab2FLRqQ (ORCPT ); Tue, 12 Jun 2012 13:46:16 -0400 Received: from merlin.infradead.org ([205.233.59.134]:54162 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751306Ab2FLRqP convert rfc822-to-8bit (ORCPT ); Tue, 12 Jun 2012 13:46:15 -0400 Message-ID: <1339523164.31548.103.camel@twins> Subject: Re: [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4) From: Peter Zijlstra To: Andrew Wagin Cc: Arun Sharma , Oleg Strikov , Steven Rostedt , Frederic Weisbecker , Ingo Molnar , linux-kernel@vger.kernel.org Date: Tue, 12 Jun 2012 19:46:04 +0200 In-Reply-To: References: <1338797382-287275-1-git-send-email-avagin@openvz.org> <1338813658.28282.43.camel@twins> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 988 Lines: 26 On Tue, 2012-06-12 at 17:15 +0400, Andrew Wagin wrote: > Yes, I like it. Are you going to commit this? No its unfinished and untested.. not even sure its seen a compiler. Also, in another email I wrote: > Also, you don't need the callchain on the wakeup side of things. You > only want the callchain of the sched_switch site. > > We could even dis-allow the callchain unwind when event->ctx->task && > event->ctx->task != current -- pretend the unwind failed by writing 0 > entries. > > That also avoids the 'difficultly' of exposing and trying to interpret > another task's callchain. That probably wants to be done as well. If you have the time, please look into this. Hoping of course Frederic and others don't object to this.. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/