Re: [PATCH 5.15 000/245] 5.15.150-rc1 review

Guenter Roeck
2024-02-29T18:15:53Z

On 2/27/24 05:23, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.150 release.
> There are 245 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu, 29 Feb 2024 13:15:36 +0000.
> Anything received after that time might be too late.
>

$ git grep dma_fence_allocate_private_stub
drivers/dma-buf/dma-fence-unwrap.c: return dma_fence_allocate_private_stub(timestamp);
^^^^^^^^^
drivers/dma-buf/dma-fence-unwrap.c: tmp = dma_fence_allocate_private_stub(ktime_get());
^^^^^^^^^^^
drivers/dma-buf/dma-fence.c: * dma_fence_allocate_private_stub - return a private, signaled fence
drivers/dma-buf/dma-fence.c:struct dma_fence *dma_fence_allocate_private_stub(void)
^^^^
drivers/dma-buf/dma-fence.c:EXPORT_SYMBOL(dma_fence_allocate_private_stub);
drivers/gpu/drm/drm_syncobj.c: struct dma_fence *fence = dma_fence_allocate_private_stub();
include/linux/dma-fence.h:struct dma_fence *dma_fence_allocate_private_stub(void);
^^^^

This was introduced with commit 4e82b9c11d3cd ("dma-buf: add dma_fence_timestamp helper") in
v5.15.149. The additional parameter to dma_fence_allocate_private_stub() was introduced in the
upstream kernel with commit f781f661e8c99 ("dma-buf: keep the signaling time of merged fences
v3") which is missing in v5.15.y.

Guenter