From patchwork Thu Aug 20 09:22:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 265536 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=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 9C3DEC433DF for ; Thu, 20 Aug 2020 11:43:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62E492054F for ; Thu, 20 Aug 2020 11:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597923836; bh=UQ9bBscGua1StUs2Lns9LflTuLYe5Z2moAJYhe5l1Wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=V5Dd0WGYf6zmhktfYfoC1o68iHNWCikamL6YvgPSP+nJv/w1Wm2s/qzFI5RMNS6U1 BSH9n3ExAhSzwsCmmQJxc4l+/HE4lsOFDxfJoJ9UtesBNBZJjGin2E4OWN2zfPoH1z QLwD4FCS+u9CYw0jPMx3aHGgvOr48zVodJDY7Qyw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730355AbgHTLnG (ORCPT ); Thu, 20 Aug 2020 07:43:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:57202 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730612AbgHTKD6 (ORCPT ); Thu, 20 Aug 2020 06:03:58 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7C08720724; Thu, 20 Aug 2020 10:03:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597917836; bh=UQ9bBscGua1StUs2Lns9LflTuLYe5Z2moAJYhe5l1Wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Az9YCqWUmE5IKDHiY3AP6zTdHi6P4LlnmumKVcM0rDHtwsCfbpR55zrAhooZAq4/e /W4FS0YxdBQDdp+kXF9gnAQvKPtoJ86E95tLBOEb9YI9gkwmUOwgu7YhjGN9Yw9s0T PuxWfPfp1YUdUSpv/KpU+jDrcAlIMYI06LsdK4mo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stephen Rothwell , Michael Ellerman Subject: [PATCH 4.9 176/212] powerpc: Fix circular dependency between percpu.h and mmu.h Date: Thu, 20 Aug 2020 11:22:29 +0200 Message-Id: <20200820091611.280265772@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091602.251285210@linuxfoundation.org> References: <20200820091602.251285210@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Michael Ellerman commit 0c83b277ada72b585e6a3e52b067669df15bcedb upstream. Recently random.h started including percpu.h (see commit f227e3ec3b5c ("random32: update the net random state on interrupt and activity")), which broke corenet64_smp_defconfig: In file included from /linux/arch/powerpc/include/asm/paca.h:18, from /linux/arch/powerpc/include/asm/percpu.h:13, from /linux/include/linux/random.h:14, from /linux/lib/uuid.c:14: /linux/arch/powerpc/include/asm/mmu.h:139:22: error: unknown type name 'next_tlbcam_idx' 139 | DECLARE_PER_CPU(int, next_tlbcam_idx); This is due to a circular header dependency: asm/mmu.h includes asm/percpu.h, which includes asm/paca.h, which includes asm/mmu.h Which means DECLARE_PER_CPU() isn't defined when mmu.h needs it. We can fix it by moving the include of paca.h below the include of asm-generic/percpu.h. This moves the include of paca.h out of the #ifdef __powerpc64__, but that is OK because paca.h is almost entirely inside #ifdef CONFIG_PPC64 anyway. It also moves the include of paca.h out of the #ifdef CONFIG_SMP, which could possibly break something, but seems to have no ill effects. Fixes: f227e3ec3b5c ("random32: update the net random state on interrupt and activity") Cc: stable@vger.kernel.org # v5.8 Reported-by: Stephen Rothwell Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200804130558.292328-1-mpe@ellerman.id.au Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/include/asm/percpu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/powerpc/include/asm/percpu.h +++ b/arch/powerpc/include/asm/percpu.h @@ -9,8 +9,6 @@ #ifdef CONFIG_SMP -#include - #define __my_cpu_offset local_paca->data_offset #endif /* CONFIG_SMP */ @@ -18,4 +16,6 @@ #include +#include + #endif /* _ASM_POWERPC_PERCPU_H_ */