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Fri, 06 Oct 2023 12:31:33 +0200 Message-ID: <867f5121d7d010cacf938c293f862b0cea560ec2.camel@gmx.de> Subject: Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct se From: Mike Galbraith To: Marek Szyprowski , Biju Das , Peter Zijlstra Cc: "bsegall@google.com" , "bristot@redhat.com" , "chris.hyser@oracle.com" , "corbet@lwn.net" , "dietmar.eggemann@arm.com" , "gregkh@linuxfoundation.org" , "joel@joelfernandes.org" , "joshdon@google.com" , "juri.lelli@redhat.com" , "kprateek.nayak@amd.com" , "linux-kernel@vger.kernel.org" , "mingo@kernel.org" , "patrick.bellasi@matbug.net" , Pavel Machek , "pjt@google.com" , "qperret@google.com" , "qyousef@layalina.io" , "rostedt@goodmis.org" , "tglx@linutronix.de" , "tim.c.chen@linux.intel.com" , "timj@gnu.org" , "vincent.guittot@linaro.org" , "youssefesmat@chromium.org" , "yu.c.chen@intel.com" , "mgorman@suse.de" , "linux-renesas-soc@vger.kernel.org" Date: Fri, 06 Oct 2023 12:31:28 +0200 In-Reply-To: <553e2ee4-ab3a-4635-a74f-0ba4cc03f3f9@samsung.com> References: <20231005150258.GA36277@noisy.programming.kicks-ass.net> <553e2ee4-ab3a-4635-a74f-0ba4cc03f3f9@samsung.com> Content-Type: text/plain; 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Fri, 06 Oct 2023 03:33:06 -0700 (PDT) X-Spam-Level: ** On Fri, 2023-10-06 at 10:35 +0200, Marek Szyprowski wrote: > > > Just to note, I've run into this issue on the QEmu's 'arm64/virt' > platform, not on the Samsung specific hardware.=C2=A0 It doesn't appear to be arch specific, all I have to do is enable autogroup, raspberry or x86_64 desktop box, the occasional failure tripping over task groups, leaving both best and best_left with identical but not what we're looking for ->min_deadline. -Mike