From nobody Mon Apr 27 04:37:12 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14EBBC433EF for ; Fri, 17 Jun 2022 08:57:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381422AbiFQI5Z (ORCPT ); Fri, 17 Jun 2022 04:57:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381418AbiFQI5X (ORCPT ); Fri, 17 Jun 2022 04:57:23 -0400 Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADE3C4991B; Fri, 17 Jun 2022 01:57:20 -0700 (PDT) Received: by mail-ed1-x529.google.com with SMTP id b8so5282636edj.11; Fri, 17 Jun 2022 01:57:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=9FbtKPklDAzYqBxI9midbYskvWSeku8VgHM4QUv4J+g=; b=RIKHRpM0wUlv8lDPilrhaOhSpY747adTj7jmL+FXxXSdcmIjxhX0Lkw1pm+H4jCe6Y ml/nDp0R8WSzIO6Y4+TMTO5T+EgaW0Fv65fbBlvLBQg7AKwVHrPEL5DnYmCVnK1Gz6CE ahp0XJk1jYPqPxK/YnubRBwE3gDKZOrd9NCQjYVA17cJqqI2isHsGzRSlO1OKg9m3EF7 O9vntabP/uW+nTYRnpc4lSoNe2QEGelbtCCRpXBOeQqC5xRl195yUEgU4gVtA5roGtjC nlOXbhZgLE4nRdhbQgP0LfrWe+MSYg+hvmj5oZg7JYMMtRzpjHmzqAscNrQ/uewV496K GvRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=9FbtKPklDAzYqBxI9midbYskvWSeku8VgHM4QUv4J+g=; b=omg4xlDJHqNwgVkpAiHStXVvj8WpjWwlh1YnmpWUhKkTKy1becC6Zs0MPOx4dpK6Vt Ot/jpM9tvCZ03KKNZrnWfH1bT4XMzg4Vw/MA5unDIeGWdo1qeWJPYd67o1RCmyY7mjl4 YtpmJz6SnnOUXzpZ4q+41xj1PRXEoQQ18vQjS/v5Ffu7Cx6IUZJV3zurzQLL/0ZYA3Cs yBYTEE1GqzYDvUSKnDnTY4t3vPeRTMVbkdvnfrOQLuvlIiMcUGyr/34KlePCbAhD+A+5 eJiT35QoYNXTAB8tnQ0x7xGfWzmdWITgyYqo21vXa5P325ewT0YtG1AXr37FuSpcdDF6 hNug== X-Gm-Message-State: AJIora/9MMHOxeqcNWh4Wypgmf8CVGnQiSib2fDojG9l2i0waUfLeYu4 A6gaVC3i6z1EbNXNwmhZTvnx/LzVPh0= X-Google-Smtp-Source: AGRyM1uLOxptLIvHstxzriWtY/q4UBxlt3fidCgVPZqCtQXF7jzPX8mLudscCl/W3SvwTk6vu2FBBQ== X-Received: by 2002:a50:d097:0:b0:42d:d158:4e61 with SMTP id v23-20020a50d097000000b0042dd1584e61mr11144467edd.42.1655456239177; Fri, 17 Jun 2022 01:57:19 -0700 (PDT) Received: from able.fritz.box (p57b0bd9f.dip0.t-ipconnect.de. [87.176.189.159]) by smtp.gmail.com with ESMTPSA id r13-20020a05640251cd00b0042ab4e20543sm3388788edd.48.2022.06.17.01.57.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jun 2022 01:57:08 -0700 (PDT) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=C3=B6nig?= To: linux-kernel@vger.kernel.org, linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, kernel-team@android.com Cc: tjmercier@google.com, daniel.vetter@ffwll.ch, gregkh@google.com, sumit.semwal@linaro.org, =?UTF-8?q?Christian=20K=C3=B6nig?= Subject: [PATCH] dma-buf: deprecate DMABUF_SYSFS_STATS Date: Fri, 17 Jun 2022 10:57:02 +0200 Message-Id: <20220617085702.4298-1-christian.koenig@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a warning that this UAPI wasn't such a good idea and shouldn't be used by anybody. That should give us a better chance to remove it at some point and prevents others from running into the same issues. Signed-off-by: Christian K=C3=B6nig Reviewed-by: T.J. Mercier --- drivers/dma-buf/Kconfig | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index 541efe01abc7..e4dc53a36428 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -75,7 +75,7 @@ menuconfig DMABUF_HEAPS between drivers. =20 menuconfig DMABUF_SYSFS_STATS - bool "DMA-BUF sysfs statistics" + bool "DMA-BUF sysfs statistics (DEPRECATED)" depends on DMA_SHARED_BUFFER help Choose this option to enable DMA-BUF sysfs statistics @@ -85,6 +85,10 @@ menuconfig DMABUF_SYSFS_STATS statistics for the DMA-BUF with the unique inode number . =20 + This option is deprecated and should sooner or later be removed. + Android is the only user of this and it turned out that this resulted + in quite some performance problems. + source "drivers/dma-buf/heaps/Kconfig" =20 endmenu --=20 2.25.1