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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 77A3CC021BE for ; Thu, 27 Feb 2025 13:14:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 34FEB10E369; Thu, 27 Feb 2025 13:14:42 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="moHo2Wfk"; dkim-atps=neutral Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5EEFF10E369 for ; Thu, 27 Feb 2025 13:14:41 +0000 (UTC) Received: by mail.gandi.net (Postfix) with ESMTPSA id 7E7B1441D1; Thu, 27 Feb 2025 13:14:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1740662079; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=0ZQs/l4JYDSyEBVURZU1+fjtlbd9ICOAACkUqIKUjlw=; b=moHo2WfkCYRJzgS4XWujubINZa+ELyf9sCl0Bz6bWbHhtZ63UmFUmt3FFk8ndMcZbCXwN2 +tLsdv3a2NrS06Ub14/bRADKpt8cII9Y46eLThLcIEZ40PPPPo4Esm4Kacx2UuDj7qyvM6 /jqpoXAj9WwFoWBaIuYLUpIVjqkNQrIUfFgx8kGM244PIQIuejUTgZKPC2byoCvKsFKmON ega+TA7d50NCzIcKwZzw53/XnpJzYvja6aL3vwmO1wuLNmTRyUm9dd4GMMDGwGES7CwsvL bY8vgyqJ48rwrzlOOxgjAGyr+wTUAL7kLw/uDww47IPK6ljXc1VrEm0IyWfhMw== Message-ID: <7af4322f-9443-48d4-8106-e79dc89be9e0@bootlin.com> Date: Thu, 27 Feb 2025 14:14:39 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Louis Chauvet Subject: Re: [PATCH i-g-t 03/39] lib/igt_configfs: Add helper to mount configfs To: =?UTF-8?B?Sm9zw6kgRXhww7NzaXRv?= , igt-dev@lists.freedesktop.org Cc: Jim Shargo , Marius Vlad References: <20250218165011.9123-1-jose.exposito89@gmail.com> <20250218165011.9123-4-jose.exposito89@gmail.com> Content-Language: en-US Autocrypt: addr=louis.chauvet@bootlin.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdekjeehiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepkfffgggfhffuvfevfhgjtgfgsehtkeertddtvdejnecuhfhrohhmpefnohhuihhsucevhhgruhhvvghtuceolhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepteffhfdtiefgheffudeuvdekfefgvdduudfgffetteffvdetfffgjeevudfggfffnecuffhomhgrihhnpegsohhothhlihhnrdgtohhmnecukfhppeeltddrkeelrdduieefrdduvdejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledtrdekledrudeifedruddvjedphhgvlhhopegludelvddrudeikedrtddrvddtngdpmhgrihhlfhhrohhmpehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeegpdhrtghpthhtohepjhhoshgvrdgvgihpohhsihhtohekleesghhmrghilhdrtghomhdprhgtphhtthhopehighhtqdguvghvsehlihhsthhsrdhfrhgvvgguvghskhhtohhprdhorhhgpdhrtghpthhtohepjhhshhgrrhhgohestghhrhhomhhiuhhmrdhorhhgpdhrtghpthhtohepmhgrrhhiuhhsrdhvlhgrugestgholhhlrggsohhrr gdrtghomh X-GND-Sasl: louis.chauvet@bootlin.com X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Le 18/02/2025 à 17:49, José Expósito a écrit : > Add a new helper function to mount configfs. Required to test VKMS > configuration. > > Co-developed-by: Jim Shargo > Signed-off-by: Jim Shargo > Co-developed-by: Marius Vlad > Signed-off-by: Marius Vlad > Signed-off-by: José Expósito Reviewed-by: Louis Chauvet > --- > lib/igt.h | 1 + > lib/igt_configfs.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++ > lib/igt_configfs.h | 13 +++++++++++ > lib/meson.build | 1 + > 4 files changed, 72 insertions(+) > create mode 100644 lib/igt_configfs.c > create mode 100644 lib/igt_configfs.h > > diff --git a/lib/igt.h b/lib/igt.h > index 58c39e098..173ca70bf 100644 > --- a/lib/igt.h > +++ b/lib/igt.h > @@ -27,6 +27,7 @@ > #include "drmtest.h" > #include "i915_3d.h" > #include "igt_aux.h" > +#include "igt_configfs.h" > #include "igt_core.h" > #include "igt_debugfs.h" > #include "igt_draw.h" > diff --git a/lib/igt_configfs.c b/lib/igt_configfs.c > new file mode 100644 > index 000000000..cd8674cb5 > --- /dev/null > +++ b/lib/igt_configfs.c > @@ -0,0 +1,57 @@ > +// SPDX-License-Identifier: MIT > +/* > + * Copyright © 2023 Google LLC. > + * Copyright © 2023 Collabora, Ltd. > + * Copyright © 2024 Red Hat, Inc. > + */ > + > +#include > + > +#include "igt_aux.h" > +#include "igt_configfs.h" > + > +/** > + * SECTION:igt_configfs > + * @short_description: Support code for configfs features > + * @title: configfs > + * @include: igt_configfs.h > + * > + * This library provides helpers to access configfs features. > + */ > + > +/* > + * General configfs helpers > + */ > + > +static const char *__igt_configfs_mount(void) > +{ > + if (igt_is_mountpoint("/sys/kernel/config")) > + return "/sys/kernel/config"; > + > + if (igt_is_mountpoint("/config")) > + return "/config"; > + > + if (mount("config", "/sys/kernel/config", "configfs", 0, 0)) > + return NULL; > + > + return "/sys/kernel/config"; > +} > + > +/** > + * igt_configfs_mount: > + * > + * This attempts to locate where configfs is mounted on the filesystem, > + * and if not found, will then try to mount configfs at /sys/kernel/config. > + * > + * Returns: > + * The path to the configfs mount point (e.g. /sys/kernel/config) > + */ > +const char *igt_configfs_mount(void) > +{ > + static const char *path; > + > + if (!path) > + path = __igt_configfs_mount(); > + > + return path; > +} > diff --git a/lib/igt_configfs.h b/lib/igt_configfs.h > new file mode 100644 > index 000000000..4cbe9001e > --- /dev/null > +++ b/lib/igt_configfs.h > @@ -0,0 +1,13 @@ > +/* SPDX-License-Identifier: MIT */ > +/* > + * Copyright © 2023 Google LLC. > + * Copyright © 2023 Collabora, Ltd. > + * Copyright © 2024 Red Hat, Inc. > + */ > + > +#ifndef __IGT_CONFIGFS_H__ > +#define __IGT_CONFIGFS_H__ > + > +const char *igt_configfs_mount(void); > + > +#endif /* __IGT_CONFIGFS_H__ */ > diff --git a/lib/meson.build b/lib/meson.build > index 9fffdd3c6..201b1fbb4 100644 > --- a/lib/meson.build > +++ b/lib/meson.build > @@ -18,6 +18,7 @@ lib_sources = [ > 'i915/i915_crc.c', > 'igt_collection.c', > 'igt_color_encoding.c', > + 'igt_configfs.c', > 'igt_facts.c', > 'igt_crc.c', > 'igt_debugfs.c', -- Louis Chauvet, Bootlin Embedded Linux and Kernel engineering https://bootlin.com