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[87.106.117.14]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48feb00e5easm36399545e9.13.2026.05.16.04.06.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2026 04:06:51 -0700 (PDT) From: Julian Orth Date: Sat, 16 May 2026 13:06:09 +0200 Subject: [PATCH 06/12] drm/syncobj: add drm_syncobj_transfer 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-v1-6-88ede9d98a81@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=2747; i=ju.orth@gmail.com; s=20251120; h=from:subject:message-id; bh=crfpaYowwqJxJnvwODKb3NMb9L0ciSXP5LaWzS0yZzY=; b=4LnJkSRcgHTRmc5hqP/RVVAq8z7NN5hqbrYXKUhKI6Ju4If09ezCwoSL5J4pmggyrT/r6k6gL MSWHYqto26NBUeuZWgCz0Yq5OF0t6VAVcTQcC9DTxb9GREciFiuCzd0 X-Developer-Key: i=ju.orth@gmail.com; a=ed25519; pk=uM2SS4lelkuIoYHc7v9N9bgBZ3hS632zJS2xjRJLPLI= This makes the logic from drm_syncobj_transfer_ioctl available to callers that already have two drm_syncobj. Signed-off-by: Julian Orth --- drivers/gpu/drm/drm_syncobj.c | 36 +++++++++++++++++++++++++++++------- include/drm/drm_syncobj.h | 3 +++ 2 files changed, 32 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index a746e787882d..8ccfbd972191 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -1031,13 +1031,9 @@ drm_syncobj_transfer_ioctl(struct drm_device *dev, void *data, goto err_dst; } - if (args->dst_point) - ret = drm_syncobj_transfer_to_timeline(src, args->src_point, - dst, args->dst_point, - args->flags); - else - ret = drm_syncobj_transfer_to_binary(src, args->src_point, - dst, args->flags); + ret = drm_syncobj_transfer(src, args->src_point, + dst, args->dst_point, + args->flags); drm_syncobj_put(dst); err_dst: @@ -1046,6 +1042,32 @@ drm_syncobj_transfer_ioctl(struct drm_device *dev, void *data, return ret; } +/** + * drm_syncobj_transfer - transfer a fence between syncobjs + * @src: source syncobj + * @src_point: source point + * @dst: destination syncobj + * @dst_point: destination point + * @flags: DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT or 0 + * + * Copies the fence at @src_point in @src to @dst_point in @dst. + * + * Returns 0 on success or a negative error value on failure. + */ +int drm_syncobj_transfer(struct drm_syncobj *src, u64 src_point, + struct drm_syncobj *dst, u64 dst_point, + u32 flags) +{ + if (dst_point) + return drm_syncobj_transfer_to_timeline(src, src_point, + dst, dst_point, + flags); + else + return drm_syncobj_transfer_to_binary(src, src_point, + dst, flags); +} +EXPORT_SYMBOL(drm_syncobj_transfer); + static void syncobj_wait_fence_func(struct dma_fence *fence, struct dma_fence_cb *cb) { diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index 85e7ca7f7896..ec8042d61466 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -136,6 +136,9 @@ signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, ktime_t *deadline); int drm_syncobj_register_eventfd(struct drm_syncobj *syncobj, int ev_fd, u64 point, u32 flags); +int drm_syncobj_transfer(struct drm_syncobj *src, u64 src_point, + struct drm_syncobj *dst, u64 dst_point, + u32 flags); void drm_syncobj_free(struct kref *kref); int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags, struct dma_fence *fence); -- 2.54.0