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video: driver: track dma buffer leak

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Track dmabuf refcount during dma_buf_get() and dma_buf_put().
So if any dmabuf present with non-zero refcount during close,
then i.e a dmabuf leak. So during session close print error
and call dma_buf_put_refcount_completely() api to recursively
reduce the count to zero and will call dma_buf_put() to avoid
dmabuf leak from video driver side.

Change-Id: I2028c18ca067977eac3cdf0ce7d6cc4200739408
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>
This commit is contained in:
Govindaraj Rajagopal
2021-06-18 22:15:42 +05:30
parent 3730e55b29
commit 7f0c2442c5
5 changed files with 126 additions and 17 deletions
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15
driver/vidc/inc/msm_vidc_memory.h
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@@ -11,11 +11,18 @@
struct msm_vidc_core;
struct msm_vidc_inst;
struct msm_memory_dmabuf {
struct list_head list;
struct dma_buf *dmabuf;
u32 refcount;
};
enum msm_memory_pool_type {
MSM_MEM_POOL_BUFFER = 0,
MSM_MEM_POOL_MAP,
MSM_MEM_POOL_ALLOC,
MSM_MEM_POOL_TIMESTAMP,
MSM_MEM_POOL_DMABUF,
MSM_MEM_POOL_MAX,
};
@@ -40,8 +47,12 @@ int msm_vidc_memory_map(struct msm_vidc_core *core,
struct msm_vidc_map *map);
int msm_vidc_memory_unmap(struct msm_vidc_core *core,
struct msm_vidc_map *map);
struct dma_buf *msm_vidc_memory_get_dmabuf(int fd);
void msm_vidc_memory_put_dmabuf(void *dmabuf);
struct dma_buf *msm_vidc_memory_get_dmabuf(struct msm_vidc_inst *inst,
int fd);
void msm_vidc_memory_put_dmabuf(struct msm_vidc_inst *inst,
struct dma_buf *dmabuf);
void msm_vidc_memory_put_dmabuf_completely(struct msm_vidc_inst *inst,
struct msm_memory_dmabuf *buf);
int msm_memory_pools_init(struct msm_vidc_inst *inst);
void msm_memory_pools_deinit(struct msm_vidc_inst *inst);
void *msm_memory_alloc(struct msm_vidc_inst *inst,