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[103.168.172.201]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-47378088079sm5095001cf.80.2025.02.24.19.55.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2025 19:55:20 -0800 (PST) Received: from phl-compute-06.internal (phl-compute-06.phl.internal [10.202.2.46]) by mailfauth.phl.internal (Postfix) with ESMTP id F28BA1200043; Mon, 24 Feb 2025 22:55:19 -0500 (EST) Received: from phl-mailfrontend-02 ([10.202.2.163]) by phl-compute-06.internal (MEProxy); Mon, 24 Feb 2025 22:55:20 -0500 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdektdeihecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpggftfghnshhusghstghrihgsvgdp uffrtefokffrpgfnqfghnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivg hnthhsucdlqddutddtmdenucfjughrpefhvfevufffkffoggfgsedtkeertdertddtnecu hfhrohhmpeeuohhquhhnucfhvghnghcuoegsohhquhhnrdhfvghnghesghhmrghilhdrtg homheqnecuggftrfgrthhtvghrnhepgeegueekgefhvedukedtveejhefhkeffveeufedu iedvleetledtkeehjefgieevnecuffhomhgrihhnpehkvghrnhgvlhdrohhrghenucevlh hushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpegsohhquhhnodhm vghsmhhtphgruhhthhhpvghrshhonhgrlhhithihqdeiledvgeehtdeigedqudejjeekhe ehhedvqdgsohhquhhnrdhfvghngheppehgmhgrihhlrdgtohhmsehfihigmhgvrdhnrghm vgdpnhgspghrtghpthhtohepfedtpdhmohguvgepshhmthhpohhuthdprhgtphhtthhope hrtghusehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohepphgruhhlmhgtkhes khgvrhhnvghlrdhorhhgpdhrtghpthhtohepfhhrvgguvghrihgtsehkvghrnhgvlhdroh hrghdprhgtphhtthhopehnvggvrhgrjhdruhhprgguhhihrgihsehkvghrnhgvlhdrohhr ghdprhgtphhtthhopehjohgvlhesjhhovghlfhgvrhhnrghnuggvshdrohhrghdprhgtph htthhopehjohhshhesjhhoshhhthhrihhplhgvthhtrdhorhhgpdhrtghpthhtohepsgho qhhunhdrfhgvnhhgsehgmhgrihhlrdgtohhmpdhrtghpthhtohepuhhrvgiikhhisehgmh grihhlrdgtohhmpdhrtghpthhtoheprhhoshhtvgguthesghhoohgumhhishdrohhrgh X-ME-Proxy: Feedback-ID: iad51458e:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 24 Feb 2025 22:55:19 -0500 (EST) From: Boqun Feng To: rcu@vger.kernel.org Cc: "Paul E. McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Davidlohr Bueso , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Valentin Schneider , Masami Hiramatsu , Shuah Khan , Sebastian Andrzej Siewior , Clark Williams , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-rt-devel@lists.linux.dev, Ankur Arora Subject: [PATCH rcu 00/11] Lazy Preempt changes for v6.15 Date: Mon, 24 Feb 2025 19:55:05 -0800 Message-Id: <20250225035516.26443-1-boqun.feng@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi, Please find the upcoming changes for CONFIG_PREEMPT_LAZY in RCU. The changes can also be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux.git lazypreempt.2025.02.24a Paul & Ankur, I put patch #7 and #8 (bug fixes in rcutorture) before patch #9 (which is the one that enables non-preemptible RCU in preemptible kernel), because I want to avoid introduce a bug in-between a series, appreciate it if you can double check on this. Thanks! Regards, Boqun Ankur Arora (7): rcu: fix header guard for rcu_all_qs() rcu: rename PREEMPT_AUTO to PREEMPT_LAZY sched: update __cond_resched comment about RCU quiescent states rcu: handle unstable rdp in rcu_read_unlock_strict() rcu: handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y osnoise: provide quiescent states rcu: limit PREEMPT_RCU configurations Boqun Feng (1): rcutorture: Update ->extendables check for lazy preemption Paul E. McKenney (3): rcutorture: Update rcutorture_one_extend_check() for lazy preemption rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y include/linux/rcupdate.h | 2 +- include/linux/rcutree.h | 2 +- include/linux/srcutiny.h | 2 +- kernel/rcu/Kconfig | 4 +-- kernel/rcu/rcutorture.c | 26 ++++++++++++--- kernel/rcu/srcutiny.c | 14 ++++---- kernel/rcu/tree_plugin.h | 22 ++++++++++--- kernel/sched/core.c | 4 ++- kernel/trace/trace_osnoise.c | 32 +++++++++---------- .../selftests/rcutorture/configs/rcu/TREE07 | 3 +- .../selftests/rcutorture/configs/rcu/TREE10 | 3 +- 11 files changed, 73 insertions(+), 41 deletions(-)