include/linux/task_io_accounting_ops.h

   1 /*
   2  * Task I/O accounting operations
   3  */
   4 #ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED
   5 #define __TASK_IO_ACCOUNTING_OPS_INCLUDED
   6
   7 #ifdef CONFIG_TASK_IO_ACCOUNTING
   8 static inline void task_io_account_read(size_t bytes)
   9 {
  10         current->ioac.read_bytes += bytes;
  11 }
  12
  13 static inline void task_io_account_write(size_t bytes)
  14 {
  15         current->ioac.write_bytes += bytes;
  16 }
  17
  18 static inline void task_io_account_cancelled_write(size_t bytes)
  19 {
  20         current->ioac.cancelled_write_bytes += bytes;
  21 }
  22
  23 static inline void task_io_accounting_init(struct task_struct *tsk)
  24 {
  25         memset(&tsk->ioac, 0, sizeof(tsk->ioac));
  26 }
  27
  28 #else
  29
  30 static inline void task_io_account_read(size_t bytes)
  31 {
  32 }
  33
  34 static inline void task_io_account_write(size_t bytes)
  35 {
  36 }
  37
  38 static inline void task_io_account_cancelled_write(size_t bytes)
  39 {
  40 }
  41
  42 static inline void task_io_accounting_init(struct task_struct *tsk)
  43 {
  44 }
  45
  46 #endif          /* CONFIG_TASK_IO_ACCOUNTING */
  47 #endif          /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */