From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: Re: [GIT RFC PULL rcu/urgent] Prevent Kconfig from asking pointless questions Date: Mon, 20 Apr 2015 14:34:40 -0400 Message-ID: <20150420143440.49e1e537@gandalf.local.home> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 To: Ingo Molnar Return-path: In-Reply-To: <20150420182831.GA19510@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org 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