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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 357DEC04AB4 for ; Tue, 14 May 2019 12:51:41 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ADFD220881 for ; Tue, 14 May 2019 12:51:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ADFD220881 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=git.icu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 453Hcp0xClzDqLP for ; Tue, 14 May 2019 22:51:38 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=git.icu (client-ip=163.172.180.134; helo=git.icu; envelope-from=shawn@git.icu; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=git.icu Received: from git.icu (git.icu [163.172.180.134]) (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 lists.ozlabs.org (Postfix) with ESMTPS id 453HZP6GlyzDqD5 for ; Tue, 14 May 2019 22:49:33 +1000 (AEST) Received: from localhost.localdomain (minicloud.parqtec.unicamp.br [143.106.167.126]) by git.icu (Postfix) with ESMTPSA id 3BA01220515; Tue, 14 May 2019 12:49:25 +0000 (UTC) From: Shawn Landden To: Subject: [PATCH] powerpc: Allow may_use_simd() to function as feature detection Date: Tue, 14 May 2019 09:49:18 -0300 Message-Id: <20190514124918.22590-1-shawn@git.icu> X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a In-Reply-To: <20190513005104.20140-1-shawn@git.icu> References: <20190513005104.20140-1-shawn@git.icu> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Shawn Landden , Paul Mackerras , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" ARM does this, so we might as well too. I am a bit confused however as CONFIG_ALTIVEC does not select CONFIG_PPC_FPU. Would you ever have altivec without a fpu? Signed-off-by: Shawn Landden --- arch/powerpc/include/asm/simd.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/powerpc/include/asm/simd.h b/arch/powerpc/include/asm/simd.h index 9b066d633..2fe26f258 100644 --- a/arch/powerpc/include/asm/simd.h +++ b/arch/powerpc/include/asm/simd.h @@ -7,4 +7,11 @@ * It's always ok in process context (ie "not interrupt") * but it is sometimes ok even from an irq. */ +#ifdef CONFIG_PPC_FPU extern bool may_use_simd(void); +#else +static inline bool may_use_simd(void) +{ + return false; +} +#endif -- 2.21.0.1020.gf2820cf01a