From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA028C433E3 for ; Wed, 22 Jul 2020 15:33:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EF342068F for ; Wed, 22 Jul 2020 15:33:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="rZLTDdFf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732929AbgGVPdV (ORCPT ); Wed, 22 Jul 2020 11:33:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726717AbgGVPdT (ORCPT ); Wed, 22 Jul 2020 11:33:19 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02E59C0619DC for ; Wed, 22 Jul 2020 08:33:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=Thn9yqgRHu/PXpLQKdHMdfKNVEezxunukJ744Cn+7Tk=; b=rZLTDdFfj7xkYzIiRgPTUasveK fWRMFGuIlvvEWwWEls4L76jddih2vhw2xmjvhAFhEVzFsEi2jGAb/vLC2uYOYsgLZRrzHXFy0BEni 14XlhVniv7enLGJQeG9wd9TKqGX34amaheKGZvYmeaqHkhHEONaEeh7g6mkD9Su5T7H/AFGOTG37M c0LAMEfrmA4i39HLMH3NuLlxnAIWNPGt/m+z9Ifr/BHfGef4wRqnF45vQAViCbmWksaBGdLnEc1oR liw3VWaPyNt7Ux5oLfKcp3j5u+sCBYMDD2ieviyhm6PobF4ToiYh+cL3/GjppaaAWmjEV15+9iBl0 WIS6Xh8A==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyGjv-000111-0l; Wed, 22 Jul 2020 15:33:03 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 9121630753E; Wed, 22 Jul 2020 17:33:01 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 4672A200D4171; Wed, 22 Jul 2020 17:33:01 +0200 (CEST) Message-ID: <20200722153017.243366177@infradead.org> User-Agent: quilt/0.66 Date: Wed, 22 Jul 2020 17:01:53 +0200 From: Peter Zijlstra To: mingo@kernel.org, torvalds@linux-foundation.org Cc: linux-kernel@vger.kernel.org, will@kernel.org, paulmck@kernel.org, hch@lst.de, axboe@kernel.dk, chris@chris-wilson.co.uk, davem@davemloft.net, kuba@kernel.org, fweisbec@gmail.com, oleg@redhat.com, peterz@infradead.org Subject: [RFC][PATCH 4/9] irq_work: Unconditionally build on SMP References: <20200722150149.525408253@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Peter Zijlstra (Intel) --- kernel/Makefile | 1 + kernel/irq_work.c | 3 +++ 2 files changed, 4 insertions(+) --- a/kernel/Makefile +++ b/kernel/Makefile @@ -105,6 +105,7 @@ obj-$(CONFIG_TRACE_CLOCK) += trace/ obj-$(CONFIG_RING_BUFFER) += trace/ obj-$(CONFIG_TRACEPOINTS) += trace/ obj-$(CONFIG_IRQ_WORK) += irq_work.o +obj-$(CONFIG_SMP) += irq_work.o obj-$(CONFIG_CPU_PM) += cpu_pm.o obj-$(CONFIG_BPF) += bpf/ obj-$(CONFIG_KCSAN) += kcsan/ --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -20,6 +20,7 @@ #include #include +#ifdef CONFIG_IRQ_WORK static DEFINE_PER_CPU(struct llist_head, raised_list); static DEFINE_PER_CPU(struct llist_head, lazy_list); @@ -212,3 +213,5 @@ void irq_work_sync(struct irq_work *work cpu_relax(); } EXPORT_SYMBOL_GPL(irq_work_sync); + +#endif /* CONFIG_IRQ_WORK */