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=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 4A4B9C2BCA1 for ; Fri, 7 Jun 2019 12:06:44 +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 8C6672089E for ; Fri, 7 Jun 2019 12:06:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="shBn+/bZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C6672089E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=canb.auug.org.au 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 45L1Ts1XnzzDqNB for ; Fri, 7 Jun 2019 22:06:41 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (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 45L1R60q4hzDqMW for ; Fri, 7 Jun 2019 22:04:18 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=canb.auug.org.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="shBn+/bZ"; dkim-atps=neutral Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 45L1Qt4FFfz9sNd; Fri, 7 Jun 2019 22:04:06 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1559909057; bh=SVse233ZP/gfWiwAkphdAiPtrWGA02EH5CK05uTxdco=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=shBn+/bZp4+i7ILKYT0rkicAc6qcmmQP1VlZ3saK03LKB9zc/NDFJ5cjhXqlEHyPz 2nllWsT+DJ6D5zDFTOmqEnjXbNpqikUY4YWSMMSeJwu5ucFQSEtL4eZUc6HVdKK4TE qeoWLj3UUE4M9QEUmDXWh2ARrdai0SPhHQww77UvDoWOKjYJt4Bb67lNhTHgNKLPBy 6p7Lz1Bv/DqsVATPnHpr/EbevipmxUHrPDNyWaHhD6m4citn/ZVKw/Yu0UerC8T4Bm d5uAfepi6bZG8PmazXKqBSrkpabcAFZqyXErnjGLWQxR8X21ypmE9ZV6+vmRkEQUdV qL0IogG/ZPB0Q== Date: Fri, 7 Jun 2019 22:03:26 +1000 From: Stephen Rothwell To: Anshuman Khandual Subject: Re: [RFC V3] mm: Generalize and rename notify_page_fault() as kprobe_page_fault() Message-ID: <20190607220326.1e21fc9c@canb.auug.org.au> In-Reply-To: <1559903655-5609-1-git-send-email-anshuman.khandual@arm.com> References: <1559903655-5609-1-git-send-email-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/f4dkIceQ5ZrfVlbLmfAkblH"; protocol="application/pgp-signature" 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: Mark Rutland , Michal Hocko , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , linux-mm@kvack.org, Paul Mackerras , sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, Yoshinori Sato , x86@kernel.org, Russell King , Matthew Wilcox , Ingo Molnar , Fenghua Yu , Andrey Konovalov , Andy Lutomirski , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Tony Luck , Heiko Carstens , linux-kernel@vger.kernel.org, Martin Schwidefsky , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --Sig_/f4dkIceQ5ZrfVlbLmfAkblH Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Anshuman, On Fri, 7 Jun 2019 16:04:15 +0530 Anshuman Khandual wrote: > > +static nokprobe_inline bool kprobe_page_fault(struct pt_regs *regs, > + unsigned int trap) > +{ > + int ret =3D 0; > + > + /* > + * To be potentially processing a kprobe fault and to be allowed > + * to call kprobe_running(), we have to be non-preemptible. > + */ > + if (kprobes_built_in() && !preemptible() && !user_mode(regs)) { > + if (kprobe_running() && kprobe_fault_handler(regs, trap)) > + ret =3D 1; > + } > + return ret; > +} Since this is now declared as "bool" (thanks for that), you should make "ret" be bool and use true and false; --=20 Cheers, Stephen Rothwell --Sig_/f4dkIceQ5ZrfVlbLmfAkblH Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAlz6Uo4ACgkQAVBC80lX 0GwAlwgAndGNjcRg/+OZtSy1kiUIeIc3sDi7Ok5AjcBz7eTGTC6rACK7/CqF74Ff Hw76yMUeoSjtJWLlhqmY0XI4ib30yQJSvSSWJyDvZpmgkDbNO69BK4rT4CO/d2YX sCodILuUU462hNmmfr9N6uWJGSeDWdEvbfitkR2PEzQAUSsQacEA8UB+bqf+zQ13 xwBTJEE0YFg5UCqOcsE3bSTh/e+p7djYHrQIiZX0ntJOra+nJZuz/GfJQUmx4WYn AHgcP+Marnv0/MW4JDWYDtetq+Fmr96wk01Ex4gMytm7TcpL0asnQ0IEVwljvVr/ HFKp+ZJLlwZP8lyt90zY76EEDgViPQ== =7Lk0 -----END PGP SIGNATURE----- --Sig_/f4dkIceQ5ZrfVlbLmfAkblH--