Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754092AbbDTSet (ORCPT ); Mon, 20 Apr 2015 14:34:49 -0400 Received: from smtprelay0168.hostedemail.com ([216.40.44.168]:46507 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751295AbbDTSeo (ORCPT ); Mon, 20 Apr 2015 14:34:44 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1540:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3351:3622:3865:3870:3871:3874:4605:5007:6120:6261:7875:7901:9121:10004:10400:10848:10967:11026:11232:11658:11914:12438:12517:12519:12679:12740:13069:13311:13357:14096:14097:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: rat54_803bdce78a856 X-Filterd-Recvd-Size: 2284 Date: Mon, 20 Apr 2015 14:34:40 -0400 From: Steven Rostedt To: Ingo Molnar Cc: "Paul E. McKenney" , Clark Williams , linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, a.p.zijlstra@chello.nl, akpm@linux-foundation.org, linux-rt-users@vger.kernel.org Subject: Re: [GIT RFC PULL rcu/urgent] Prevent Kconfig from asking pointless questions Message-ID: <20150420143440.49e1e537@gandalf.local.home> In-Reply-To: <20150420182831.GA19510@gmail.com> References: <20150416183812.GA5571@linux.vnet.ibm.com> <20150418130340.GA26931@gmail.com> <20150418133444.GD23685@linux.vnet.ibm.com> <20150418143238.GA2337@gmail.com> <20150419020541.GA5561@linux.vnet.ibm.com> <20150420113554.598e503f@sluggy> <20150420170902.GU5561@linux.vnet.ibm.com> <20150420180107.GE24936@home.goodmis.org> <20150420180904.GA19229@gmail.com> <20150420142149.3ac58a2c@gandalf.local.home> <20150420182831.GA19510@gmail.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1096 Lines: 30 On Mon, 20 Apr 2015 20:28:32 +0200 Ingo Molnar wrote: > Instrumentation - especially instrumentation that should have been > implemented mostly in user-space, like ftrace ;-) - is another special > case that should stay as flexible as possible via sysctls, obviously. I know I used ftrace as an example, but a more appropriate example would be the sched knobs, as this is more about rcu scheduling than anything else. See: sched_autogroup_enabled sched_rr_timeslice_ms sched_child_runs_first sched_rt_period_us sched_domain/ sched_rt_runtime_us sched_latency_ns sched_shares_window_ns sched_migration_cost_ns sched_time_avg_ms sched_min_granularity_ns sched_tunable_scaling sched_nr_migrate sched_wakeup_granularity_ns In particular, the sched_rt_* ones. -- Steve -- 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/