From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A067F266581 for ; Sat, 16 May 2026 11:06:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778929610; cv=none; b=aog3LclWRrtemGgB2QYXXfbhIGKNvlUPM2FDaVYL0DyfdiwTC3gHC35iexdZKOcz7+5HLgf069lgJq7xdDTtihNyO/nOz0Xnl/2MELAsHMMBkdNhDczfjJtdsDD1qrrCU+zomtGscjZ7A3CX0GJiiLaXzsvJwWvYxKcDcOmaq0w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778929610; c=relaxed/simple; bh=Xxs8inG7yNnVnqsTeDmsro1fFz3EEPayoUW9RCB58oE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=O8mz6zdwhmNVjCCE/ojs64Jmp3AHQPZwqTvYAlvD6LZuCezeyuFB8g+OJIm9mRmYDhXVeq5eqo6d8fnIDhS8JnKAIx6EDoXOp8Tj5Id/qs256cU8GuyrJEocMFttJXZsn44GrLS/WwfUbX7fs64OYdZy7dN6sZYzl8eGqPtbRZs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=jgodxZ/j; arc=none smtp.client-ip=209.85.128.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="jgodxZ/j" Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-488af9fdaa7so2709015e9.1 for ; Sat, 16 May 2026 04:06:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778929606; x=1779534406; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=lYlLPOH4yVQW/c+VIhwYHIXyYVIQiO3ciiQAaKF6Jpo=; b=jgodxZ/jxYCIXxZ0DWvuYV4eOdWbBJb/DIvMH4xAruNdnoRxmVwmJSLrEDx33sG10m 8EtR9V/DxPSuA09hOri+Q0z+0LZOV0xewWB8W4iiFd41RGWqQZUdKG0eroVi+Z2Fxnt5 KhK6r3BFhXEodPXtMeytke3mabM8zy1XjiK/Pil1aHgmT2JTL8tVEAeq+4Xxd8o6L40I 1apc1QPKFwvVgHI46ZtWK7sRT89JwiGzKlC0ALU4d4H6QDakr3QXeA6khYJ5HhlkKBsn AyGrBRhm78PmFwc1Vpi37/Jjjp44FiTuTQip3nMyRwLzFor4Vbl5vO66TEQE6rdwTs7D WlvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778929606; x=1779534406; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=lYlLPOH4yVQW/c+VIhwYHIXyYVIQiO3ciiQAaKF6Jpo=; b=UQSEuaIwa5gNus2+0ENfthhdGUuYkhvNq+7zmBX/sWoUg7IOP1RPig6m54YojElGcU cDCHyk/BbPB9J9arR/NkTSrY1+0tahtntVhHw77hsBHhw8YomLXkTV/Pbkoz8wCTywDf 6W0QEaD2TWmupil4Sn+/qlFyRXazRtEZU1JTvbXllscm3H+1pGR5+tZItG9QI7bFiTr0 m7FKWgqu0E73G1cQIlN15Z2c8c3P6K8i+wGHULNSbP661q1VijwFS5jU2kfOmrFdjtC0 ikHobyDeG+QJZfZAFipGOCuuny+Owos6BDw5eBpkFpUyL0xQiKN1FuA6xqoLfgtD8DCh 0t1w== X-Forwarded-Encrypted: i=1; AFNElJ9Lrxhqn0oIG6xjGVxmSXH7M8jTg39l5mmEod6tHbIGVG0bZTU+9aowINaA1hJdCBIFh02cUcIbElV2ow==@vger.kernel.org X-Gm-Message-State: AOJu0YzbAeXT1+PlX96huv5G7ESJt9tWmgetMXV1Nhm15NKTMkglFcJT 23iOpDtcaxnQMTDdVVucM2Kw1v1o8QJrNoge5xSb9N9OvZRapcIZSsrlTdt9hU+i X-Gm-Gg: Acq92OG2axt7CyMeDHHDePAcOpD637fvZ5AypJsfN0VEhQAC26pAXkg5XKiZgnF6Ctc 68JhiOh2lqZM2BhoZTi75gEGFjQipKQSDP/Vj3XlYas0JLGxi75XSUX0Nu6XOGl1jNr5UgoSkEZ YypZfP0trIoBDVhN92nTV0KXvPpI9sxglC8Uxb9D0ljHOVpqDSRc/nL7g6BgsTuP1z8ySLxQzml 4emtHzy9cTXsW1opwctNaVzTNyJvqo1dWY3fODvid1m5TMugQfWUeWCK7RI3axLTqcaeLDX6DKB HOh20MMxnTz8SZWLgYuoFLJE19H4RFxIHs0yr69hTzaDsKyKTkIk1nEL+7zK60wg0qXWLm+ScYE fkCgRZeC4EHZp2QAcXCWB3d8VPuw0j3B5ChJwqsozgs5ffFmccqLFZPX1sV9O+iSdH2QJPpZSXJ Jmme3flWAYXyEFM00vR7rFUTmsHh0MPl9wlW/jIJX/PyC3GeaRGKcTGUXWsQVy6u9O9pbO2UWH6 GijvRQ= X-Received: by 2002:a05:600c:4e43:b0:48f:e230:8cad with SMTP id 5b1f17b1804b1-48fe6632135mr98825375e9.33.1778929605528; Sat, 16 May 2026 04:06:45 -0700 (PDT) Received: from [10.13.0.20] (ip87-106-117-14.pbiaas.com. [87.106.117.14]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48feb00e5easm36399545e9.13.2026.05.16.04.06.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2026 04:06:45 -0700 (PDT) From: Julian Orth Date: Sat, 16 May 2026 13:06:04 +0200 Subject: [PATCH 01/12] drm/syncobj: add drm_syncobj_from_fd Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260516-jorth-syncobj-v1-1-88ede9d98a81@gmail.com> References: <20260516-jorth-syncobj-v1-0-88ede9d98a81@gmail.com> In-Reply-To: <20260516-jorth-syncobj-v1-0-88ede9d98a81@gmail.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Jonathan Corbet , Shuah Khan , Arnd Bergmann , Greg Kroah-Hartman Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-doc@vger.kernel.org, wayland-devel@lists.freedesktop.org, ju.orth@gmail.com X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778929602; l=2530; i=ju.orth@gmail.com; s=20251120; h=from:subject:message-id; bh=Xxs8inG7yNnVnqsTeDmsro1fFz3EEPayoUW9RCB58oE=; b=+8Ntp4CeTenAuSVPrMlJyQQ3aZauaK6+QLTjIL8uRDHdQOin3LlpX/RlNsbP4/cmzUNFxQZTX jdMvakZq1vTDS+YTjld0PyK5yiRyPU+nmJ9Cooj8Tm+KOPLpLdSvCEH X-Developer-Key: i=ju.orth@gmail.com; a=ed25519; pk=uM2SS4lelkuIoYHc7v9N9bgBZ3hS632zJS2xjRJLPLI= Given a syncobj FD, returns the underlying drm_syncobj. Signed-off-by: Julian Orth --- drivers/gpu/drm/drm_syncobj.c | 37 +++++++++++++++++++++++++++---------- include/drm/drm_syncobj.h | 1 + 2 files changed, 28 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index 8d9fd1917c6e..d992aa082ace 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -684,6 +684,31 @@ int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd) } EXPORT_SYMBOL(drm_syncobj_get_fd); +/** + * drm_syncobj_from_fd - lookup and reference a syncobj. + * @fd: syncobj file descriptor + * + * Returns a reference to the syncobj pointed to by @fd or NULL. The + * reference must be released by calling drm_syncobj_put(). + */ +struct drm_syncobj *drm_syncobj_from_fd(int fd) +{ + struct drm_syncobj *syncobj; + + CLASS(fd, f)(fd); + + if (fd_empty(f)) + return NULL; + + if (fd_file(f)->f_op != &drm_syncobj_file_fops) + return NULL; + + syncobj = fd_file(f)->private_data; + drm_syncobj_get(syncobj); + return syncobj; +} +EXPORT_SYMBOL(drm_syncobj_from_fd); + static int drm_syncobj_handle_to_fd(struct drm_file *file_private, u32 handle, int *p_fd) { @@ -701,20 +726,12 @@ static int drm_syncobj_handle_to_fd(struct drm_file *file_private, static int drm_syncobj_fd_to_handle(struct drm_file *file_private, int fd, u32 *handle) { - struct drm_syncobj *syncobj; - CLASS(fd, f)(fd); + struct drm_syncobj *syncobj = drm_syncobj_from_fd(fd); int ret; - if (fd_empty(f)) - return -EINVAL; - - if (fd_file(f)->f_op != &drm_syncobj_file_fops) + if (!syncobj) return -EINVAL; - /* take a reference to put in the xarray */ - syncobj = fd_file(f)->private_data; - drm_syncobj_get(syncobj); - ret = xa_alloc(&file_private->syncobj_xa, handle, syncobj, xa_limit_32b, GFP_KERNEL); if (ret) diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index b40052132e52..5da9988834b5 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -117,6 +117,7 @@ drm_syncobj_fence_get(struct drm_syncobj *syncobj) struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private, u32 handle); +struct drm_syncobj *drm_syncobj_from_fd(int fd); void drm_syncobj_add_point(struct drm_syncobj *syncobj, struct dma_fence_chain *chain, struct dma_fence *fence, -- 2.54.0