From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-kernel-owner@vger.kernel.org From: Gregory Haskins Subject: [RFC PATCH 0/3] Series short description Date: Tue, 11 Nov 2008 09:26:13 -0500 Message-ID: <20081111142323.28477.41235.stgit@dev.haskins.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org To: mingo@elte.hu, rostedt@goodmis.org, peterz@infradead.org Cc: linux-kernel@vger.kernel.org, =linux-rt-users@vger.kernel.org List-ID: Hi Ingo, Steven, Peter, This series applies roughly to mainline as an enhancement to the sched_rt logic. Peter and I were discussing some of the unecessary overhead in pull_rt_tasks() via IRC, and this is my RFC attempt to address the problem. I have built/booted this on a 4-way C2D Xeon box and it passes preempt-test. Comments, please. -Greg --- Gregory Haskins (3): sched: use highest_prio.next to optimize pull operations sched: use highest_prio.curr for pull threshold sched: track the next-highest priority on each runqueue kernel/sched.c | 8 ++- kernel/sched_rt.c | 158 +++++++++++++++++++++++++++++++---------------------- 2 files changed, 99 insertions(+), 67 deletions(-) -- Signature