From mboxrd@z Thu Jan 1 00:00:00 1970 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 28C0412CDAA; Fri, 17 May 2024 15:23:08 +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=1715959389; cv=none; b=DUGa+GwbIFn5nDa4jcwJbS4JYx5dnDkaSO8RRaQhUOLPskaiAN51EKnYEGFPWktDSqIPEOubDISXgGcAzOvZGqCpexMzqEfKReYNyl9vjlilFDUu2UPZ5h4iBkargegd1F1QRBzfLVETbv0+jkY2eU5Du4CYR9tAp8B6SQOrR/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715959389; c=relaxed/simple; bh=3LP65tfSXoMyUd/3LOucjGN0buuuw/MegJ3O2QRF7nc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qQwaf9/C7Gg0SRUSPhRLBO2m2Brd21nVP7lpaaevJn7C1gin1a+ZSg5uPo/tj125PNJXyhgzvHHM6393JYnGw8xnXC6UzKt6vjYO+2aYIlI0mIyy+KmUpxCLJjXzmESDiV2X/ka9dc3lww+SaTEYtIfW2UxoM7fgcQB2u/aNvWo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DlwH7tJm; 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="DlwH7tJm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 718B3C2BD10; Fri, 17 May 2024 15:23:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715959388; bh=3LP65tfSXoMyUd/3LOucjGN0buuuw/MegJ3O2QRF7nc=; h=From:To:Cc:Subject:Date:From; b=DlwH7tJmIMgbOdCT7J2XKc5EPn4qgk9AE/yLrO4HJ+PqM2n7IEt5zhRR5uiyE1FgZ X7FbVb9ZUq7TdePZlyVXFT7wA4lQEyILCAism81vaRsvAX09RoarvFqfRor93FUDLK dHz6SYMKpGt+J+fQ/0TDPim0FJzo1oSY4HyRyElJZA2w3Yvg9z61FVlsHCvtVt69zg ZQYMYhXDcSU+s9nFm7vwRiDHeFCeImNbZncuZZanZ6svBs+lKiwAnpKl8CT2I5+ukb VREu9qYerSxDcXTm136RXT6Gtxj+JtuAExQBBbjc/2SX4jFA+fEgROicfsJG9PGj2o Zeb/kMC8P6OKA== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Boqun Feng , Joel Fernandes , Neeraj Upadhyay , Uladzislau Rezki , Zqiang , rcu , "Paul E . McKenney" , Peter Zijlstra Subject: [PATCH 0/2] rcu/tasks: Fix stale task snapshot Date: Fri, 17 May 2024 17:23:01 +0200 Message-ID: <20240517152303.19689-1-frederic@kernel.org> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Fix an issue on RCU task trace pre-gp that might collect stale current tasks on online CPUs, missing the read side of latest context switching tasks. Frederic Weisbecker (2): rcu/tasks: Fix stale task snaphot from TASK-TRACE rcu/tasks: Further comment ordering around current task snapshot on TASK-TRACE kernel/rcu/tasks.h | 17 +++++++++++++++++ kernel/sched/core.c | 14 +++++++------- 2 files changed, 24 insertions(+), 7 deletions(-) -- 2.44.0