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=-9.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 97A00C4741F for ; Wed, 4 Nov 2020 11:25:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A7F5221F8 for ; Wed, 4 Nov 2020 11:25:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="i4duuCrk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729213AbgKDLZD (ORCPT ); Wed, 4 Nov 2020 06:25:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728287AbgKDLXo (ORCPT ); Wed, 4 Nov 2020 06:23:44 -0500 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E97CC0613D3 for ; Wed, 4 Nov 2020 03:23:44 -0800 (PST) Received: by mail-pf1-x442.google.com with SMTP id z3so1612292pfb.10 for ; Wed, 04 Nov 2020 03:23:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=iqkBaJQMLLSn3M5HmvPZvenF0ZnDsvHIodeI0SDkoT8=; b=i4duuCrk/C/kCdN+uiu8Xnb+j6jKczFmUUIPRXjAfuVWaZB2Gml9H9Ha69fjVptjYw DMK9FNY7Bkrth+tuQRbQeLvalByoN6jGboe2A4zJ+q5veX3xpobZMbgXN47gapnbD16i lC44L8z9qMiRs+XpGwu3OTtItGJzwmRgzrXS+QuL3CXaEtUg9R5c3u1lmtPkYIESywlg HDTqbJD/ZBGIPRSxZtFrT+R6btkLgUF6eoSKlLSj61xDwy8VEfFCns6eHgxHm9h6A7Yz 96jZFy1JXOn/iF5NHyuadGS0TmBnMPgimmYFuLE9VF90z55yR2uGUzAkVfGNdBZ+Onpu 4YMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=iqkBaJQMLLSn3M5HmvPZvenF0ZnDsvHIodeI0SDkoT8=; b=gPK51S429cKmPQ1hTrCuIn4sRJSnwhxFYGM5QDwkw7jet45dWl6M25iLHkWIVxwINf cOO7thMQI+kUPjUaqRH0xjU0cdk3DvVbLD0Q6lIB2cEwlVzy3aos33CuU8+dEvS58G27 FYbhyivaewPsTMxQUdmyM35Vbqi7yacEQzkrsulFPSl9w5Keoqu6Dd8qiiIJuGLlKiEo mjuV7DwgbzzgwQ8yQODJ277RqnngtQ+luZxWeCuSZZKVcSUf90DzFdBO31Gs1Xtz0/bx 8dmUlL4l6YUk6oVONWXOFtj8tm73y0BMWbvmP0Q7odyKOWSmUTEW21Jcjb5xzCiiMm9z RFvg== X-Gm-Message-State: AOAM533tRSEGcgvoLf5vYJoMVKVdjHKJg4Z+IDd/UYHPD1Q6XyMYZrnj le6EI8fco+2UuQ0a59GFaGE= X-Google-Smtp-Source: ABdhPJyKmZjy9APbGyGtvptrvKgWNDj/kqACD/0WC+F/YjahNzBVhU+zKwToLUf548ioNlkmRcPEHw== X-Received: by 2002:a17:90a:8c89:: with SMTP id b9mr4097017pjo.34.1604489024128; Wed, 04 Nov 2020 03:23:44 -0800 (PST) Received: from localhost ([160.202.157.3]) by smtp.gmail.com with ESMTPSA id n64sm2182055pfn.134.2020.11.04.03.23.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 03:23:43 -0800 (PST) Date: Wed, 4 Nov 2020 16:53:38 +0530 From: Deepak R Varma To: David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: mh12gx2825@gmail.com Subject: [PATCH] drm/vgm: replace idr_init() by idr_init_base() Message-ID: <20201104112338.GA29271@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org idr_init() uses base 0 which is an invalid identifier. The new function idr_init_base allows IDR to set the ID lookup from base 1. This avoids all lookups that otherwise starts from 0 since 0 is always unused. References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient") Signed-off-by: Deepak R Varma --- drivers/gpu/drm/vgem/vgem_fence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c index 17f32f550dd9..2902dc6e64fa 100644 --- a/drivers/gpu/drm/vgem/vgem_fence.c +++ b/drivers/gpu/drm/vgem/vgem_fence.c @@ -233,7 +233,7 @@ int vgem_fence_signal_ioctl(struct drm_device *dev, int vgem_fence_open(struct vgem_file *vfile) { mutex_init(&vfile->fence_mutex); - idr_init(&vfile->fence_idr); + idr_init_base(&vfile->fence_idr, 1); return 0; } -- 2.25.1