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Wed, 22 Jul 2026 02:36:12 -0700 (PDT) Received: from gmonaco-thinkpadt14gen3.rmtit.csb ([195.174.132.53]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47f85c67339sm4537989f8f.31.2026.07.22.02.36.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2026 02:36:12 -0700 (PDT) Message-ID: <1fe191ba66ae668b4635e2dd18b3e6c3b3c0090d.camel@redhat.com> Subject: Re: [PATCH v2 4/4] rv/rtapp: Add wakeup monitor From: Gabriele Monaco To: Nam Cao , Chao Liu Cc: Steven Rostedt , linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Date: Wed, 22 Jul 2026 11:36:10 +0200 In-Reply-To: <87y0f3wjuk.fsf@yellow.woof> References: <87y0f3wjuk.fsf@yellow.woof> 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 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2026-07-22 at 09:42 +0200, Nam Cao wrote: > Chao Liu writes: > > > +static void handle_sched_waking(void *data, struct task_struct *task= ) > > > +{ > > > + if (in_task()) { > > > + if (current->prio > task->prio) > > > + ltl_atom_pulse(task, LTL_WOKEN_BY_LOWER_PRIO, > > > true); > >=20 > > The implementation also reports wakeups from softirq context through > > WOKEN_BY_SOFTIRQ: > >=20 > > > + } else if (in_serving_softirq()) { > > > + ltl_atom_pulse(task, LTL_WOKEN_BY_SOFTIRQ, true); > > > + } > >=20 > > Should this description mention softirq wakeups as well? >=20 > Technically, on RT kernel, softirq is a SCHED_OTHER task. On !RT kernel, > softirq can also be executed as a SCHED_OTHER task, which is the cause > for concern. >=20 > But explicitly mentioning softirq does not hurt, I wouldn't oppose that. Sounds good to me. So as far as I understand, this change is going to go th= rough a separate patch right? I'm considering this series final. Thanks, Gabriele