diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2020-05-14 19:01:53 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-06-23 14:40:35 +0300 |
| commit | 62a4cd0130f3936e431d5c8495af07edc9e1363d (patch) | |
| tree | 1ed3a7d5b6ccbdfe6f97cc3cd23f649e40577ed4 /drivers/media/test-drivers/vivid/vivid-core.c | |
| parent | 2ff99ca4bc30895f7e061f1fc0e510f19bd032bb (diff) | |
| download | linux-62a4cd0130f3936e431d5c8495af07edc9e1363d.tar.xz | |
media: vivid: add cache_hints module param
Add a cache_hints module param to control per-queue user space cache
hints support.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/test-drivers/vivid/vivid-core.c')
| -rw-r--r-- | drivers/media/test-drivers/vivid/vivid-core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c index 6c740e3e6999..5c986df4a8d4 100644 --- a/drivers/media/test-drivers/vivid/vivid-core.c +++ b/drivers/media/test-drivers/vivid/vivid-core.c @@ -169,6 +169,14 @@ MODULE_PARM_DESC(allocators, " memory allocator selection, default is 0.\n" "\t\t 0 == vmalloc\n" "\t\t 1 == dma-contig"); +static unsigned int cache_hints[VIVID_MAX_DEVS] = { + [0 ... (VIVID_MAX_DEVS - 1)] = 0 +}; +module_param_array(cache_hints, uint, NULL, 0444); +MODULE_PARM_DESC(cache_hints, " user-space cache hints, default is 0.\n" + "\t\t 0 == forbid\n" + "\t\t 1 == allow"); + static struct vivid_dev *vivid_devs[VIVID_MAX_DEVS]; const struct v4l2_rect vivid_min_rect = { @@ -819,6 +827,7 @@ static int vivid_create_queue(struct vivid_dev *dev, q->lock = &dev->mutex; q->dev = dev->v4l2_dev.dev; q->supports_requests = true; + q->allow_cache_hints = (cache_hints[dev->inst] == 1); return vb2_queue_init(q); } |