From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 D77B32144AF for ; Wed, 26 Feb 2025 13:13:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740575638; cv=none; b=Dr9k+1G0SPdW8w3CR4WOR8hX9PXAtTt+EA9bCW7J9wbSUOuZ5u8DHj9hDs6U7l5Ijq8FBvSTR9TGDYWJebwALBDoGGgSShg/sOQTrUjsMS+UQmNmq0EQ2WNKIbOCrPeStW9Bk7hffpSd0vBc+tWox5lEEawncANTemVrYeHK1Kg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740575638; c=relaxed/simple; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=uKlNk3bWpqVNbvAtOS5xHLFHaK+8U9GhK4e9VMb4R1kA3z+obNCVnk93StiELB8tcga4QyokpzSYJmByDwHeHKTC2ui2stbnHbzRi8aNr/cKFlIUs3jGyx2g3hAnHA/rzQ+r6LW4tdFDZVGfEEqapOT2mgqD6MKgcbCy2pBjDOc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=MdS+9uDh; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="MdS+9uDh" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1740575635; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; b=MdS+9uDhsEOKM2cRg+l53I44kYrPc82ktalMl4mt8AKDu/QfDk/6N27IhVrjtk5gT0R5nM uq3F5QcXBuEbTXzbDX5LgPfEgnEE19Hg2oBrRT50hcU0CfuVLDKfPHdY633PLT9ttvbP2Z fQ18z4HZ1CrUGWkVCEm5i/2rTF+hI0s= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-573-sICbnFwmOTi-cyIzUKGz5g-1; Wed, 26 Feb 2025 08:13:52 -0500 X-MC-Unique: sICbnFwmOTi-cyIzUKGz5g-1 X-Mimecast-MFC-AGG-ID: sICbnFwmOTi-cyIzUKGz5g_1740575631 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B97E61800374; Wed, 26 Feb 2025 13:13:50 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.45.226.247]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 9123B1800357; Wed, 26 Feb 2025 13:13:47 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Wed, 26 Feb 2025 14:13:20 +0100 (CET) Date: Wed, 26 Feb 2025 14:13:16 +0100 From: Oleg Nesterov To: Frederic Weisbecker Cc: Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, Eric Dumazet , Peter Zijlstra , Waiman Long , Thomas Gleixner Subject: Re: [PATCH] task_work: Consume only item at a time while invoking the callbacks. Message-ID: <20250226131315.GD8995@redhat.com> References: <20250221170530.L3yMvO0i@linutronix.de> <20250223224014.GC23282@redhat.com> <20250225163549.GB29585@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93