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[192.26.29.3]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490bc3c183asm491606205e9.6.2026.06.09.07.42.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2026 07:42:20 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 09 Jun 2026 16:42:20 +0200 Message-Id: Cc: "Peter Zijlstra" , "Ingo Molnar" , "Will Deacon" , "Boqun Feng" , "Waiman Long" Subject: Re: [PATCH] rqspinlock: Fix order in raw_res_spin_(un)lock_irq to allow schedule From: "Kumar Kartikeya Dwivedi" To: "Gabriele Monaco" , "Arnd Bergmann" , "Alexei Starovoitov" , "Daniel Borkmann" , "Andrii Nakryiko" , "Eduard Zingerman" , "Kumar Kartikeya Dwivedi" , , "Linux-Arch" , X-Mailer: aerc 0.21.0 References: <20260609094941.56122-1-gmonaco@redhat.com> In-Reply-To: On Tue Jun 9, 2026 at 3:04 PM CEST, Gabriele Monaco wrote: > On Tue, 2026-06-09 at 13:22 +0200, Arnd Bergmann wrote: >> Should this be Cc:stable@vger.kernel.org=C2=A0to get backported? > > Not sure if the Fixes: is enough to trigger the automation, I rarely > remember to Cc:stable@vger.kernel.org and they're usually picked. > > In case I guess I'd need to re-submit the patch right? > >> Did you see this cause measurable performance problems, >> or did you find it through inspection? > > I noticed it while debugging an ENOMEM issue in the test_maps BPF > selftest on PREEMPT_RT and this was an obvious cuplrit (irq_work not > scheduled during a stress run). Turns out the problem is still there > after this fix though. I would imagine this to be the least of your problems, I think there's a bu= nch of blockers for complete selftests passing with PREEMPT_RT support in BPF. > >> >> > Signed-off-by: Gabriele Monaco >> >> Acked-by: Arnd Bergmann # asm-generic The patch makes sense to me as well. Acked-by: Kumar Kartikeya Dwivedi