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_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 2C343C55179 for ; Wed, 28 Oct 2020 22:50:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9AAC620731 for ; Wed, 28 Oct 2020 22:50:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="DCCY2Jzq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389637AbgJ1Wu5 (ORCPT ); Wed, 28 Oct 2020 18:50:57 -0400 Received: from merlin.infradead.org ([205.233.59.134]:42694 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389543AbgJ1Wu4 (ORCPT ); Wed, 28 Oct 2020 18:50:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=DCCY2JzqrNAIofTLINRtIninIU a1rlBzms85wcDG6fpjkFODtWeJSnrEaf8/Ds/LP0Sy84xJMdvwhDwwpen+4bF1j9qsVdU8uvcQmvm E1ZSyNJoGYJuxT+lQ5cszzKAgoXuNzfJCwLmHbJxWT8o5BgsBX3adXDxq+zeknWpPsuprjcowYWdA jJviq7h4inNHF84G3URlltQwgjxkcC8ypRhvq6cJGvuplSJIZbZqzQmYuSKzYCAZug83bjyFcU+XJ 8JW4dzFsipINye1YWqN9YSjSlvvjyvYXsgqpQBKqVaU5w5MwHrOChxWkaXyJTfQ/xLxXy+dDOSIvN AKXj2hxQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kXjOP-0005LI-Fc; Wed, 28 Oct 2020 11:13:25 +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 A41C2307197; Wed, 28 Oct 2020 12:13:21 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id D4F1F20B285AB; Wed, 28 Oct 2020 12:13:21 +0100 (CET) Message-ID: <20201028111221.464733855@infradead.org> User-Agent: quilt/0.66 Date: Wed, 28 Oct 2020 12:07:11 +0100 From: Peter Zijlstra To: mingo@kernel.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, vincent.guittot@linaro.org, peterz@infradead.org Subject: [PATCH v3 4/6] irq_work: Unconditionally build on SMP References: <20201028110707.971887448@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 */