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[212.8.243.115]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c25127b66e5sm711301566b.45.2026.08.27.01.22.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2026 01:22:44 -0700 (PDT) Message-ID: Subject: Re: [RFC 1/3] rv: add per-edge dwell-time statistics primitive From: Gabriele Monaco To: Tobias Schaffner , Steven Rostedt Cc: Jonathan Corbet , Shuah Khan , Masami Hiramatsu , Mathieu Desnoyers , Jan Kiszka , Philippe Gerum , linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Date: Thu, 27 Aug 2026 10:22:42 +0200 In-Reply-To: <20260827072400.45734-2-tobias.schaffner@siemens.com> References: <20260827072400.45734-1-tobias.schaffner@siemens.com> <20260827072400.45734-2-tobias.schaffner@siemens.com> Autocrypt: addr=gmonaco@redhat.com; prefer-encrypt=mutual; keydata=mDMEZuK5YxYJKwYBBAHaRw8BAQdAmJ3dM9Sz6/Hodu33Qrf8QH2bNeNbOikqYtxWFLVm0 1a0JEdhYnJpZWxlIE1vbmFjbyA8Z21vbmFjb0BrZXJuZWwub3JnPoiZBBMWCgBBFiEEysoR+AuB3R Zwp6j270psSVh4TfIFAmjKX2MCGwMFCQWjmoAFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AACgk Q70psSVh4TfIQuAD+JulczTN6l7oJjyroySU55Fbjdvo52xiYYlMjPG7dCTsBAMFI7dSL5zg98I+8 cXY1J7kyNsY6/dcipqBM4RMaxXsOtCRHYWJyaWVsZSBNb25hY28gPGdtb25hY29AcmVkaGF0LmNvb T6InAQTFgoARAIbAwUJBaOagAULCQgHAgIiAgYVCgkICwIEFgIDAQIeBwIXgBYhBMrKEfgLgd0WcK eo9u9KbElYeE3yBQJoymCyAhkBAAoJEO9KbElYeE3yjX4BAJ/ETNnlHn8OjZPT77xGmal9kbT1bC1 7DfrYVISWV2Y1AP9HdAMhWNAvtCtN2S1beYjNybuK6IzWYcFfeOV+OBWRDQ== User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 8UbDQXUkEyHjssy0TsA4vsay9FZptAmO1CtocXSaeVw_1787818965 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2026-08-27 at 09:23 +0200, Tobias Schaffner wrote: > Add a small primitive that records, per automaton edge, how long the > monitor dwelled before taking it with a count, a sum and a maximum. >=20 > The counters are per-CPU and lock-free, so a monitor's hot path can updat= e > them without disabling interrupts and without perturbing the very latency > being measured. >=20 > Signed-off-by: Tobias Schaffner > --- > =C2=A0MAINTAINERS=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 1 + > =C2=A0include/linux/rv_edge_stat.h | 45 +++++++++++++++++++++++++++++++++= +++ > =C2=A02 files changed, 46 insertions(+) > =C2=A0create mode 100644 include/linux/rv_edge_stat.h >=20 > diff --git a/MAINTAINERS b/MAINTAINERS > index 8014b9f8253e..04589dda0873 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -23654,6 +23654,7 @@ L:=09linux-trace-kernel@vger.kernel.org > =C2=A0S:=09Maintained > =C2=A0F:=09Documentation/trace/rv/ > =C2=A0F:=09include/linux/rv.h > +F:=09include/linux/rv_edge_stat.h > =C2=A0F:=09include/rv/ Any reason why you don't use include/rv/edge_stat.h ? You wouldn't need to touch the maintainers file and could just #include Thanks, Gabriele