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Fri, 30 Jan 2026 07:52:41 -0800 (PST) Received: from jlelli-thinkpadt14gen4.remote.csb ([151.29.129.40]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e10e483asm22089774f8f.3.2026.01.30.07.52.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jan 2026 07:52:41 -0800 (PST) Date: Fri, 30 Jan 2026 16:52:38 +0100 From: Juri Lelli To: Peter Zijlstra Cc: Andrea Righi , Gabriele Monaco , Ingo Molnar , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Tejun Heo , Joel Fernandes , David Vernet , Changwoo Min , Daniel Hodges , sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] sched/deadline: Reset dl_server execution state on stop Message-ID: References: <9b8c90b1-9247-4159-9bf6-72bd71bb74a2@redhat.com> <45e4dc7a-f261-46ec-8973-0fb8d1f7b0b9@redhat.com> <20260130122413.GA3306656@noisy.programming.kicks-ass.net> <20260130122620.GB1079264@noisy.programming.kicks-ass.net> <20260130124100.GC1079264@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260130124100.GC1079264@noisy.programming.kicks-ass.net> On 30/01/26 13:41, Peter Zijlstra wrote: > On Fri, Jan 30, 2026 at 01:26:20PM +0100, Peter Zijlstra wrote: > > On Fri, Jan 30, 2026 at 01:24:13PM +0100, Peter Zijlstra wrote: > > > On Wed, Jan 28, 2026 at 02:41:40PM +0100, Andrea Righi wrote: > > > > > > > Just to make sure we're testing the same thing, I'm currently using > > > > https://git.kernel.org/pub/scm/linux/kernel/git/arighi/linux.git, branch > > > > scx-dl-server. > > > > > > > > I'm running this test inside virtme-ng: > > > > $ vng -vb --config tools/testing/selftests/sched_ext/config > > > > $ vng -v -- tools/testing/selftests/sched_ext/runner -t rt_stall > > > > > > Apparently you also have to actually have that runner thing built from > > > that tree. > > > > > > Anyway, all I seem to be able to get (on x86) is PASS: 1 :/ > > > > Argh, that tree has the dodgy 'fix' in. Let me go revert that. > > This seems to work? Makes sense to me. Also handles nicely the CBS wakeup rule. Thanks, Juri