drivers/dma-buf/dma-buf-sysfs-stats.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * DMA-BUF sysfs statistics.
   4  *
   5  * Copyright (C) 2021 Google LLC.
   6  */
   7
   8 #ifndef _DMA_BUF_SYSFS_STATS_H
   9 #define _DMA_BUF_SYSFS_STATS_H
  10
  11 #ifdef CONFIG_DMABUF_SYSFS_STATS
  12
  13 int dma_buf_init_sysfs_statistics(void);
  14 void dma_buf_uninit_sysfs_statistics(void);
  15
  16 int dma_buf_stats_setup(struct dma_buf *dmabuf, struct file *file);
  17
  18 void dma_buf_stats_teardown(struct dma_buf *dmabuf);
  19 #else
  20
  21 static inline int dma_buf_init_sysfs_statistics(void)
  22 {
  23         return 0;
  24 }
  25
  26 static inline void dma_buf_uninit_sysfs_statistics(void) {}
  27
  28 static inline int dma_buf_stats_setup(struct dma_buf *dmabuf, struct file *file)
  29 {
  30         return 0;
  31 }
  32
  33 static inline void dma_buf_stats_teardown(struct dma_buf *dmabuf) {}
  34 #endif
  35 #endif // _DMA_BUF_SYSFS_STATS_H