From patchwork Fri Aug 16 06:10:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neeraj Upadhyay X-Patchwork-Id: 13765472 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9F81A83A07; Fri, 16 Aug 2024 06:11:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723788660; cv=none; b=h59Nm2ryWSjrhTKdJkHQjONRE3bFwIoC61Hx/xMuum8PF+JXTr7qlebq8Z8OQIuFOVOcBr9QXThhyTtPmLmtwkibDdJZjmXyjahojRjTeLhFD+vt0YTNwkV8NSLi0Aak8SwhUtU4RwXgxCyLm8dLwtchNbR+cfg1fJq8/OoIrAU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723788660; c=relaxed/simple; bh=VhIuPn5J4RX2MPcrM7kGhhNAtmnlyh7bh6LqlilWRRE=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=now43UKy3Pif1QPM7Rb0lvMFpycpQ8Gn6LgPE9mYP9+tMDtAxrYbxdcSYj6ckVab8Utty1ye6Bx4x5QPABKTyRB5LIS2dbovTgBXQuFDSYyv5LaT0GSqd5P78Gs9day6ewhhhwTNEPEGalOpeGL/UGM2rVLFbUHhxRuIuSYBCrA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mFhG8ldh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mFhG8ldh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2249CC32782; Fri, 16 Aug 2024 06:10:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723788660; bh=VhIuPn5J4RX2MPcrM7kGhhNAtmnlyh7bh6LqlilWRRE=; h=Date:From:To:Cc:Subject:From; b=mFhG8ldhAg77yTOx5axycm8U9RgekECXifUq//zFhWE2rpo5+sAYd+ydMq6Zkmq7W GOQrcy12qF65gzstOsikHtoUepmRpjHlXRnV96PSJTrST/rx9ZYarO2enX0Vw9qdZ+ UE8lhHo+iI8+btewNqbl3YRfHffqK30YcorLWSgP4NRNOhvVYIdvRJkoEuh4uyPLKM v0uDVuTzruaFew1vTlThFelMcZ1cpcUui64MyUOWeC746olV8vFvxeX5ydPMKDyeqA 9hxTl4sLVCJp3rdMWSNz0JVmKLuc9/3IxTFsuy6CdL8vfs7aU1nwUZpGC7nUCFqYLE 1KWdV7n2WSHIw== Date: Fri, 16 Aug 2024 11:40:50 +0530 From: Neeraj Upadhyay To: rcu@vger.kernel.org Cc: paulmck@kernel.org, joel@joelfernandes.org, frederic@kernel.org, boqun.feng@gmail.com, urezki@gmail.com, linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org, takakura@valinux.co.jp Subject: [PATCH rcu 0/4] RCU stall updates for v6.12 Message-ID: <20240816061050.GA46994@neeraj.linux> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Hello, This series contains following RCU stall updates for v6.12: 1. Abbreviate RCU CPU stall warnings during CSD-lock stalls, courtesy of Paul E. McKenney. 2. Allow dump_cpu_task() to be called without disabling preemption, courtesy of Ryo Takakura. Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/neeraj.upadhyay/linux-rcu.git/log/?h=rcustall.15.08.24a (rebased on top of csd.lock.15.08.24a because of commit dependency on commit ac9d45544cd5 "locking/csd_lock: Provide an indication of ongoing CSD-lock stall") - Neeraj Paul E. McKenney (3): rcu: Summarize RCU CPU stall warnings during CSD-lock stalls rcu: Extract synchronize_rcu_expedited_stall() from synchronize_rcu_expedited_wait() rcu: Summarize expedited RCU CPU stall warnings during CSD-lock stalls Ryo Takakura (1): rcu: Let dump_cpu_task() be used without preemption disabled .../admin-guide/kernel-parameters.txt | 4 + kernel/rcu/tree_exp.h | 113 ++++++++++-------- kernel/rcu/tree_stall.h | 8 +- kernel/sched/core.c | 2 +- 4 files changed, 74 insertions(+), 53 deletions(-)