From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) (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 20A483D524D for ; Sat, 16 May 2026 11:06:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778929612; cv=none; b=TUUhQTxHJV2KYnyeZgRFN0fVVNNKSs6ex677/VcAtekBHtMezBsVpZ3NHIogstRVQ/2QEuyF9lm272wSPAcywsWaQhOIACK0qSkUjb1MNb4ZNJrzykgRvd58zNGEXiAng2otMuLlKliQRmbLy4jnEm4w8WH6ZWgwUuFTyma102k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778929612; c=relaxed/simple; bh=a9lG2nbpvJpNBTclhiNFI8DwaJzMN3KTgSfTJHOAb6U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=AVLtdf8ZnT2kyBaKrm4KgObAYgHgORXH3N7piUWRDzwKxZUWu47RHZf8GQuxxXfLqQA98t2QK8oM15f+ElP0xiNLlGXvHU81NeSF+TcLjGYIO+mB2Z+qdBTxyJU/Rnqwh7HXRI8sx1TLpjmf4Xsny8nrJdlzk3Q9juB+ETiqUU8= 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=IRzi+gYJ; arc=none smtp.client-ip=209.85.128.46 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="IRzi+gYJ" Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-48e8132c6d0so3681845e9.1 for ; Sat, 16 May 2026 04:06:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778929607; x=1779534407; 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=DZXH6WE6NwIFHcNfcXNqTsh8pXC1vp/igAOE1DEZDoU=; b=IRzi+gYJyMO5o2NZUM+RehkR/HJ08f344RqnHLVYG2/9Iz3cy5ibqu8aF5zN/wgWEP PF6zyLu/DZ+hy2uPZwNr+mhvQSCakvW3MeNnS1qcsC4Snxjnk4bB7O5E8qZrWpTXUQxF 8R7c26ac/Kt89KnKOcUMsxc6CBnw995C032mwIodYOB0v9/KNTnldRKdsuTTuBCwUcxD Poe6KvBK72ZF+9VdOsTTiookNK34fB6PTa7dWT1+gtGKhddXpavyA/OXY2NxWiG4Yo99 CzOrI5keDG7nP6tT+DMT0vNOuKAN9xwyTpvYrEgDJrUFlNxb3u1q9l7vNFcSSlxYZZyK Yk5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778929607; x=1779534407; 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=DZXH6WE6NwIFHcNfcXNqTsh8pXC1vp/igAOE1DEZDoU=; b=BMWvLiHrcUsYmgSumrcK0KMcvFBNNORolnr7MSvGcRPa/tZbuYaXxyxlW9S8jhamRn j/WQmxAns1kMgXhzs6YBhuLbrzJ7iDkESOXyNIwm5aOLtAr/9+dimhAT+vdbvNqUwaW4 P4pizAazKhZpGltnuUqgBCVWMZZ2+f1x4K4cKM6BKmxGzJ6knLa3YQNhT8XFb2XWTRx8 z9/frmto8Ct4FvV+ngPeoVzD+A4tvcEpMOBh+YhJnrugUfaMPaOPwqGCVFI/A4O3toQ6 HXiGkSd7KH+ZbGEAGAasGZHEF6FyTch+UYITNC9BaJcd4ITLVEaHd24TCFrS4wnchO3N NNng== X-Forwarded-Encrypted: i=1; AFNElJ/+gffJ3JzQnzZCy5YbHRY2xRKeNiudpcAc3Rvijr1oGSCzbwH7XTiiD0k1orlX1f9s1tW3cXSbgps=@vger.kernel.org X-Gm-Message-State: AOJu0Yygt52yHxCYllcME/EQOAzT/+nbeCgxmzBOiw7CUT9WBrhvqQ3q 8TS42KB5nYv4xGMjcLaP4ZWgwPdRHYR3DUBKZzRNS4ozz/oUjWFL25bQ X-Gm-Gg: Acq92OFYOriDKmqWOakxHefiAAuY5qDdilqO+xXnWus/ASFUBtMbMtjRJNl9LQfx4uo 8kcOjsJ6U10zhnIzw/b1JmQo+5gvT7hLOTWXhBfVXgOXu366j/T7oTXHDYc3WFdAhMAJGwMxt0q KRydn39SLtu1NVGdr9U6TP2AXAOh3kYJIxWVPmpywl9TCQyXH+xLWqxg7tA4/NbpCC7tvyflpPu QrsoTuq+5MHH6RjH5agDsoKMuMStp1aggb9Z2J2GsJXD4sMOJLI+RZR/2oBaxns/aZqXhlgFIHI aWNHFhy0O6SXGg6LuGa9gJ6QnYS/PxO10mH0I9R7ijSU88EY5P2s3FCzPYa88yHGdrYQyCinCXS nV7Qi+zHlN+KAv2DcYBF3VPVOdZCz5+5dTlp4d0pIBIdMOQie9kuCgfAOodz95qyGpHHveGdFvu a/flt4zwNg9/BzuunkrLuHJXKH61VcXoN9nLiJ13DL5uxIWEBEpt0H2ZJd0XiYlayU3MCuX4F3C xT0EkPfCXYzomj5tA== X-Received: by 2002:a05:600c:4692:b0:48f:d835:e104 with SMTP id 5b1f17b1804b1-48fe6325391mr108240075e9.16.1778929606890; Sat, 16 May 2026 04:06:46 -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 5b1f17b1804b1-48feb00e5easm36399545e9.13.2026.05.16.04.06.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2026 04:06:46 -0700 (PDT) From: Julian Orth Date: Sat, 16 May 2026 13:06:05 +0200 Subject: [PATCH 02/12] drm/syncobj: add drm_syncobj_fence_lookup Precedence: bulk X-Mailing-List: linux-doc@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-v1-2-88ede9d98a81@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=3464; i=ju.orth@gmail.com; s=20251120; h=from:subject:message-id; bh=a9lG2nbpvJpNBTclhiNFI8DwaJzMN3KTgSfTJHOAb6U=; b=07+mwlPAmGj35N8dMENXh6PCoPSv2aMD6VxpSxRkS+KDubuwjlGqM09oILAMtWVMbSAEmf3Bp UZUi9wH3NLuA1L+LQNH3MdycdnESgn7NfT46epz4KcBbp+qwZvxkBy9 X-Developer-Key: i=ju.orth@gmail.com; a=ed25519; pk=uM2SS4lelkuIoYHc7v9N9bgBZ3hS632zJS2xjRJLPLI= This makes the logic from drm_syncobj_find_fence available to callers that have a drm_syncobj instead of a drm_file/handle pair. Signed-off-by: Julian Orth --- drivers/gpu/drm/drm_syncobj.c | 34 ++++++++++++++++++++++++++++------ include/drm/drm_syncobj.h | 2 ++ 2 files changed, 30 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index d992aa082ace..8df438fe0807 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -427,7 +427,7 @@ static int drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj) * @fence: out parameter for the fence * * This is just a convenience function that combines drm_syncobj_find() and - * drm_syncobj_fence_get(). + * drm_syncobj_fence_lookup(). * * Returns 0 on success or a negative error value on failure. On success @fence * contains a reference to the fence, which must be released by calling @@ -438,8 +438,6 @@ int drm_syncobj_find_fence(struct drm_file *file_private, struct dma_fence **fence) { struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle); - struct syncobj_wait_entry wait; - u64 timeout = nsecs_to_jiffies64(DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT); int ret; if (flags & ~DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) @@ -448,6 +446,32 @@ int drm_syncobj_find_fence(struct drm_file *file_private, if (!syncobj) return -ENOENT; + ret = drm_syncobj_fence_lookup(syncobj, point, flags, fence); + + drm_syncobj_put(syncobj); + + return ret; +} +EXPORT_SYMBOL(drm_syncobj_find_fence); + +/** + * drm_syncobj_fence_lookup - lookup and reference the fence in a sync object + * @syncobj: sync object to lookup. + * @point: timeline point + * @flags: DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT or not + * @fence: out parameter for the fence + * + * Returns 0 on success or a negative error value on failure. On success @fence + * contains a reference to the fence, which must be released by calling + * dma_fence_put(). + */ +int drm_syncobj_fence_lookup(struct drm_syncobj *syncobj, u64 point, + u64 flags, struct dma_fence **fence) +{ + struct syncobj_wait_entry wait; + u64 timeout = nsecs_to_jiffies64(DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT); + int ret; + /* Waiting for userspace with locks help is illegal cause that can * trivial deadlock with page faults for example. Make lockdep complain * about it early on. @@ -511,11 +535,9 @@ int drm_syncobj_find_fence(struct drm_file *file_private, drm_syncobj_remove_wait(syncobj, &wait); out: - drm_syncobj_put(syncobj); - return ret; } -EXPORT_SYMBOL(drm_syncobj_find_fence); +EXPORT_SYMBOL(drm_syncobj_fence_lookup); /** * drm_syncobj_free - free a sync object. diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index 5da9988834b5..580a967ae364 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -124,6 +124,8 @@ void drm_syncobj_add_point(struct drm_syncobj *syncobj, uint64_t point); void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, struct dma_fence *fence); +int drm_syncobj_fence_lookup(struct drm_syncobj *syncobj, u64 point, + u64 flags, struct dma_fence **fence); int drm_syncobj_find_fence(struct drm_file *file_private, u32 handle, u64 point, u64 flags, struct dma_fence **fence); -- 2.54.0