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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E685BC4743D for ; Fri, 4 Jun 2021 22:27:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCB066140B for ; Fri, 4 Jun 2021 22:27:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229930AbhFDW3B (ORCPT ); Fri, 4 Jun 2021 18:29:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:37408 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229774AbhFDW3B (ORCPT ); Fri, 4 Jun 2021 18:29:01 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0BD16610E7; Fri, 4 Jun 2021 22:27:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622845634; bh=tUbf9MQN8g59+W4Z+HHhyKliaam7TcTVD+M9OX7jZrQ=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=Qu2Rly5Fi4alkiiwMxGprVxPhWQLMP7W74fZ9g1qsFKwgywT//Zguoj7zoW5pIDTi oPhh5IzJWbOlEq0k1ivfbKyvEuHlbnmCXkG2OTQgk+3Yu2hnT+1p3n+xGfn0jP9euZ f3TRmzipNnRSp8r/gPDX08SqfpzTxzT3k+Sn0XigQD4HdsNzAjy1IaBkKv1qwVEAXN N8fJDr9RXyzpxP4xEMR6JJaZ9EGJV/btd68Ja94+JPqNFJW+d4Y83FwzpxJSKpHXSw gsj4tiHBBFdgkjSuMY4r4Gr4dbn6HUIqZC37faoVhCjU2k12vNrVZ3BSs41r7u0IbU 0DrGn0dJpsb/Q== Date: Fri, 4 Jun 2021 17:27:12 -0500 From: Bjorn Helgaas To: Vinicius Costa Gomes Cc: intel-wired-lan@lists.osuosl.org, sasha.neftin@intel.com, anthony.l.nguyen@intel.com, linux-pci@vger.kernel.org, bhelgaas@google.com, netdev@vger.kernel.org, mlichvar@redhat.com, richardcochran@gmail.com, hch@infradead.org Subject: Re: [PATCH next-queue v4 2/4] PCI: Add pcie_ptm_enabled() Message-ID: <20210604222712.GA2246328@bjorn-Precision-5520> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210604220933.3974558-3-vinicius.gomes@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Fri, Jun 04, 2021 at 03:09:31PM -0700, Vinicius Costa Gomes wrote: > Adds a predicate that returns if PCIe PTM (Precision Time Measurement) > is enabled. Ideally, "Add a predicate ..." > It will only return true if it's enabled in all the ports in the path > from the device to the root. > > Signed-off-by: Vinicius Costa Gomes But either way, Acked-by: Bjorn Helgaas > --- > drivers/pci/pcie/ptm.c | 9 +++++++++ > include/linux/pci.h | 3 +++ > 2 files changed, 12 insertions(+) > > diff --git a/drivers/pci/pcie/ptm.c b/drivers/pci/pcie/ptm.c > index 95d4eef2c9e8..8a4ad974c5ac 100644 > --- a/drivers/pci/pcie/ptm.c > +++ b/drivers/pci/pcie/ptm.c > @@ -204,3 +204,12 @@ int pci_enable_ptm(struct pci_dev *dev, u8 *granularity) > return 0; > } > EXPORT_SYMBOL(pci_enable_ptm); > + > +bool pcie_ptm_enabled(struct pci_dev *dev) > +{ > + if (!dev) > + return false; > + > + return dev->ptm_enabled; > +} > +EXPORT_SYMBOL(pcie_ptm_enabled); > diff --git a/include/linux/pci.h b/include/linux/pci.h > index a687dda262dd..fe7f264b2b15 100644 > --- a/include/linux/pci.h > +++ b/include/linux/pci.h > @@ -1619,9 +1619,12 @@ bool pci_ats_disabled(void); > > #ifdef CONFIG_PCIE_PTM > int pci_enable_ptm(struct pci_dev *dev, u8 *granularity); > +bool pcie_ptm_enabled(struct pci_dev *dev); > #else > static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity) > { return -EINVAL; } > +static inline bool pcie_ptm_enabled(struct pci_dev *dev) > +{ return false; } > #endif > > void pci_cfg_access_lock(struct pci_dev *dev); > -- > 2.31.1 >