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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 CD9CFC433E1 for ; Mon, 20 Jul 2020 14:04:43 +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 7A02022C9C for ; Mon, 20 Jul 2020 14:04:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="CkKu6TCy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7A02022C9C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4B9NlF19wjzDqjN for ; Tue, 21 Jul 2020 00:04:41 +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)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4B9NbT1p0gzDqYp for ; Mon, 20 Jul 2020 23:57:57 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=CkKu6TCy; 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 4B9NbT07rdz9sSJ; Mon, 20 Jul 2020 23:57:56 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ellerman.id.au; s=201909; t=1595253477; bh=oqAcDA3jBvAIOS1+7TV8kow+DYiX75ywt7lOIfOM/sw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=CkKu6TCyjNcJ5db017VcBe/4CD2hT5ZEhLX0YcvZNIy2Scej9W4SRQpvyKRm4JHnr NOCPO419nK8cxNnPaJlYsRRXigQl8GBTbXZtt0GGTXPhh9ujU2UjD7XMQ3X0o0Vdhp Vz8xmnsn61xRiU1UG7LcHVl4gaMfICuFrjlUSyBJTs8o212754FSdJBh4ieXS/U3mF SmZjZMARfXPKBnTnrsOOUGvSa+A2ghY/otIN5wlVi8kg+mBz6q0aApFQJJfm67gxxi Nye5y0JlnnnidpsIGNrhpO+y/+3BPDa5HNMWlBbXqj3NExiwQaySr0SThKDpnE86ZR 7+qdLfEINFuqg== From: Michael Ellerman To: Srikar Dronamraju Subject: Re: [PATCH 11/11] powerpc/smp: Provide an ability to disable coregroup In-Reply-To: <20200714043624.5648-12-srikar@linux.vnet.ibm.com> References: <20200714043624.5648-1-srikar@linux.vnet.ibm.com> <20200714043624.5648-12-srikar@linux.vnet.ibm.com> Date: Mon, 20 Jul 2020 23:57:56 +1000 Message-ID: <87365mthjv.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain 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: Nathan Lynch , Gautham R Shenoy , Oliver OHalloran , Michael Neuling , Srikar Dronamraju , Anton Blanchard , linuxppc-dev , Nick Piggin Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Srikar Dronamraju writes: > If user wants to enable coregroup sched_domain then they can boot with > kernel parameter "coregroup_support=on" Why would they want to do that? Adding options like this increases our test matrix by 2x (though in reality the non-default case will never be tested). cheers