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Fri, 19 Apr 2024 04:56:20 -0700 (PDT) Received: from archie.me ([103.124.138.155]) by smtp.gmail.com with ESMTPSA id b24-20020a17090aa59800b002a67b6f4417sm4702327pjq.24.2024.04.19.04.56.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 04:56:19 -0700 (PDT) Received: by archie.me (Postfix, from userid 1000) id ECB521847977D; Fri, 19 Apr 2024 18:56:15 +0700 (WIB) Date: Fri, 19 Apr 2024 18:56:15 +0700 From: Bagas Sanjaya To: Zhang Qiao , mingo@kernel.org, chrubis@suse.cz, rostedt@goodmis.org, corbet@lwn.net Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] sched/Documentation: Add RT_RUNTIME_SHARE documentation Message-ID: References: <20240419090432.1935211-1-zhangqiao22@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="BW2pnCmDs4P4T8CF" Content-Disposition: inline In-Reply-To: <20240419090432.1935211-1-zhangqiao22@huawei.com> --BW2pnCmDs4P4T8CF Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 19, 2024 at 05:04:32PM +0800, Zhang Qiao wrote: > +2.4 RT_RUNTIME_SHARE sched feature > +---------------------------------- > + > +RT_RUNTIME_SHARE allows a cpu to borrow rt-runtime from other cpus if it= runs > +out of its own rt-runtime. > + > +With this feature enabled, a rt-task may hit 100% cpu usage and can stal= l other > +per-cpu tasks like kworkers, as a result, which leads into system hang. > + > +Thus, it is advised to disable this feature by default to avoid aforemen= tioned > +issue unless you know what you're doing. > =20 > 3. Future plans > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D LGTM, thanks! Reviewed-by: Bagas Sanjaya --=20 An old man doll... just what I always wanted! - Clara --BW2pnCmDs4P4T8CF Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZiJb2AAKCRD2uYlJVVFO o4yLAQDX4mb0vApP9yRDdV5vfR2KjncNUqiUWwak8AaeDTGbpgEArzT60QuANCRI 12Q0HoV1wjmQT/Rzu+B4wqeDsvV+GAI= =vRFp -----END PGP SIGNATURE----- --BW2pnCmDs4P4T8CF--