extern void __delayacct_blkio_start(void);
extern void __delayacct_blkio_end(void);
extern int __delayacct_add_tsk(struct taskstats *, struct task_struct *);
+extern __u64 __delayacct_blkio_ticks(struct task_struct *);
static inline void delayacct_set_flag(int flag)
{
{
/* reinitialize in case parent's non-null pointer was dup'ed*/
tsk->delays = NULL;
- if (unlikely(delayacct_on))
+ if (delayacct_on)
__delayacct_tsk_init(tsk);
}
-static inline void delayacct_tsk_exit(struct task_struct *tsk)
+/* Free tsk->delays. Called from bad fork and __put_task_struct
+ * where there's no risk of tsk->delays being accessed elsewhere
+ */
+static inline void delayacct_tsk_free(struct task_struct *tsk)
{
if (tsk->delays)
- __delayacct_tsk_exit(tsk);
+ kmem_cache_free(delayacct_cache, tsk->delays);
+ tsk->delays = NULL;
}
static inline void delayacct_blkio_start(void)
static inline int delayacct_add_tsk(struct taskstats *d,
struct task_struct *tsk)
{
- if (likely(!delayacct_on))
- return -EINVAL;
- if (!tsk->delays)
+ if (!delayacct_on || !tsk->delays)
return 0;
return __delayacct_add_tsk(d, tsk);
}
+static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
+{
+ if (tsk->delays)
+ return __delayacct_blkio_ticks(tsk);
+ return 0;
+}
+
#else
static inline void delayacct_set_flag(int flag)
{}
{}
static inline void delayacct_tsk_init(struct task_struct *tsk)
{}
-static inline void delayacct_tsk_exit(struct task_struct *tsk)
+static inline void delayacct_tsk_free(struct task_struct *tsk)
{}
static inline void delayacct_blkio_start(void)
{}
static inline int delayacct_add_tsk(struct taskstats *d,
struct task_struct *tsk)
{ return 0; }
+static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
+{ return 0; }
#endif /* CONFIG_TASK_DELAY_ACCT */
#endif