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[185.132.178.103]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-432bd0daa78sm43907156f8f.6.2026.01.13.01.42.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jan 2026 01:42:04 -0800 (PST) Message-ID: <9366bb54fa7529e79608b56a394d375789d28aa5.camel@redhat.com> Subject: Re: [PATCH] sched/deadline: Fix server stopping with runnable tasks From: Gabriele Monaco To: Peter Zijlstra Cc: juri.lelli@redhat.com, Ingo Molnar , linux-kernel@vger.kernel.org, williams@redhat.com Date: Tue, 13 Jan 2026 10:42:02 +0100 In-Reply-To: <20260113093706.GT830755@noisy.programming.kicks-ass.net> References: <20260113085159.114226-3-gmonaco@redhat.com> <20260113093706.GT830755@noisy.programming.kicks-ass.net> Autocrypt: addr=gmonaco@redhat.com; prefer-encrypt=mutual; keydata=mDMEZuK5YxYJKwYBBAHaRw8BAQdAmJ3dM9Sz6/Hodu33Qrf8QH2bNeNbOikqYtxWFLVm0 1a0JEdhYnJpZWxlIE1vbmFjbyA8Z21vbmFjb0BrZXJuZWwub3JnPoiZBBMWCgBBFiEEysoR+AuB3R Zwp6j270psSVh4TfIFAmjKX2MCGwMFCQWjmoAFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AACgk Q70psSVh4TfIQuAD+JulczTN6l7oJjyroySU55Fbjdvo52xiYYlMjPG7dCTsBAMFI7dSL5zg98I+8 cXY1J7kyNsY6/dcipqBM4RMaxXsOtCRHYWJyaWVsZSBNb25hY28gPGdtb25hY29AcmVkaGF0LmNvb T6InAQTFgoARAIbAwUJBaOagAULCQgHAgIiAgYVCgkICwIEFgIDAQIeBwIXgBYhBMrKEfgLgd0WcK eo9u9KbElYeE3yBQJoymCyAhkBAAoJEO9KbElYeE3yjX4BAJ/ETNnlHn8OjZPT77xGmal9kbT1bC1 7DfrYVISWV2Y1AP9HdAMhWNAvtCtN2S1beYjNybuK6IzWYcFfeOV+OBWRDQ== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.2 (3.58.2-1.fc43) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Tue, 2026-01-13 at 10:37 +0100, Peter Zijlstra wrote: > > =C2=A0static void update_curr_dl_se(struct rq *rq, struct sched_dl_enti= ty *dl_se, > > s64 delta_exec) > > =C2=A0{ > > - bool idle =3D rq->curr =3D=3D rq->idle; > > + bool idle =3D rq->curr =3D=3D rq->idle && !rq->nr_running && !rq- > > >ttwu_pending; >=20 > This is idle_cpu(), perhaps we can lift that thing into sched.h or so. >=20 Yeah, that's what I meant by quick and dirty.. I have idle_cpu() on the mod= el side (and have them matching simplifies a lot of things). I just wasn't sure if we wanted a function call in there. But we can probab= ly do something nicer without it too. Thanks, Gabriele