diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-03-02 05:12:08 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-21 13:25:15 -0300 |
| commit | ffdc78efe1a8a013036aa7a63402f2708ed4f483 (patch) | |
| tree | 98e3749f7906b381e808454a14d50e1b89644111 /drivers/media/v4l2-core | |
| parent | b6ba2057f7823352bbc44ee846faa03b36e8b6ac (diff) | |
[media] vb2-dma-sg: add debug module option
This prevents the kernel log from being spammed with these messages.
By turning on the debug option you will see them again.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-sg.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c index 952776fafe2c..59522b2ebae1 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c @@ -21,6 +21,15 @@ #include <media/videobuf2-memops.h> #include <media/videobuf2-dma-sg.h> +static int debug; +module_param(debug, int, 0644); + +#define dprintk(level, fmt, arg...) \ + do { \ + if (debug >= level) \ + printk(KERN_DEBUG "vb2-dma-sg: " fmt, ## arg); \ + } while (0) + struct vb2_dma_sg_buf { void *vaddr; struct page **pages; @@ -74,7 +83,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_fla atomic_inc(&buf->refcount); - printk(KERN_DEBUG "%s: Allocated buffer of %d pages\n", + dprintk(1, "%s: Allocated buffer of %d pages\n", __func__, buf->sg_desc.num_pages); return buf; @@ -97,7 +106,7 @@ static void vb2_dma_sg_put(void *buf_priv) int i = buf->sg_desc.num_pages; if (atomic_dec_and_test(&buf->refcount)) { - printk(KERN_DEBUG "%s: Freeing buffer of %d pages\n", __func__, + dprintk(1, "%s: Freeing buffer of %d pages\n", __func__, buf->sg_desc.num_pages); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages); @@ -163,7 +172,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, return buf; userptr_fail_get_user_pages: - printk(KERN_DEBUG "get_user_pages requested/got: %d/%d]\n", + dprintk(1, "get_user_pages requested/got: %d/%d]\n", num_pages_from_user, buf->sg_desc.num_pages); while (--num_pages_from_user >= 0) put_page(buf->pages[num_pages_from_user]); @@ -186,7 +195,7 @@ static void vb2_dma_sg_put_userptr(void *buf_priv) struct vb2_dma_sg_buf *buf = buf_priv; int i = buf->sg_desc.num_pages; - printk(KERN_DEBUG "%s: Releasing userspace buffer of %d pages\n", + dprintk(1, "%s: Releasing userspace buffer of %d pages\n", __func__, buf->sg_desc.num_pages); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages); |