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| author | Thierry Reding <treding@nvidia.com> | 2022-03-24 11:30:25 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2022-04-06 15:12:36 +0200 |
| commit | 3e9c4584336149146fe15cb5703fc10a2ca2d2a0 (patch) | |
| tree | ce6d362db2350799672bcb167c46d0105d7bade9 /drivers/gpu/host1x | |
| parent | gpu: host1x: Fix a kernel-doc warning (diff) | |
| download | linux-3e9c4584336149146fe15cb5703fc10a2ca2d2a0.tar.xz linux-3e9c4584336149146fe15cb5703fc10a2ca2d2a0.zip | |
gpu: host1x: Do not use mapping cache for job submissions
Buffer mappings used in job submissions are usually small and not
rapidly reused as opposed to framebuffers (which are usually large and
rapidly reused, for example when page-flipping between double-buffered
framebuffers). Avoid going through the mapping cache for these buffers
since the cache would also lead to leaks if nobody is ever releasing
the cache's last reference. For DRM/KMS these last references are
dropped when the framebuffers are removed and therefore no longer
needed.
While at it, also add a note about the need to explicitly remove the
final reference to the mapping in the cache.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x')
| -rw-r--r-- | drivers/gpu/host1x/job.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c index 5e8c183167b7..b2761aa03b95 100644 --- a/drivers/gpu/host1x/job.c +++ b/drivers/gpu/host1x/job.c @@ -175,7 +175,7 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job) goto unpin; } - map = host1x_bo_pin(dev, bo, direction, &client->cache); + map = host1x_bo_pin(dev, bo, direction, NULL); if (IS_ERR(map)) { err = PTR_ERR(map); goto unpin; @@ -222,7 +222,7 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job) goto unpin; } - map = host1x_bo_pin(host->dev, g->bo, DMA_TO_DEVICE, &host->cache); + map = host1x_bo_pin(host->dev, g->bo, DMA_TO_DEVICE, NULL); if (IS_ERR(map)) { err = PTR_ERR(map); goto unpin; |