include/linux/delayacct.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* delayacct.h - per-task delay accounting
27 	 * XXX_count is incremented on every XXX operation, the delay
29 	 * XXX_delay contains the accumulated delay time in nanoseconds.
34 	u64 blkio_delay;	/* wait for sync block io completion */
38 	u64 swapin_delay;	/* wait for swapin */
46 	u64 freepages_delay;	/* wait for memory reclaim */
51 	u64 thrashing_delay;	/* wait for thrashing page */
56 	u64 compact_delay;	/* wait for memory compact */
61 	u64 wpcopy_delay;	/* wait for write-protect copy */
65 	u64 irq_delay;	/* wait for IRQ/SOFTIRQ */
70 	u32 wpcopy_count;	/* total count of write-protect copy */
81 extern int delayacct_on;	/* Delay accounting turned on/off */
105 	/* reinitialize in case parent's non-null pointer was dup'ed*/  in delayacct_tsk_init()
106 	tsk->delays = NULL;  in delayacct_tsk_init()
111 /* Free tsk->delays. Called from bad fork and __put_task_struct
112  * where there's no risk of tsk->delays being accessed elsewhere
116 	if (tsk->delays)  in delayacct_tsk_free()
117 		kmem_cache_free(delayacct_cache, tsk->delays);  in delayacct_tsk_free()
118 	tsk->delays = NULL;  in delayacct_tsk_free()
126 	if (current->delays)  in delayacct_blkio_start()
135 	if (p->delays)  in delayacct_blkio_end()
141 	if (tsk->delays)  in delayacct_blkio_ticks()
151 	if (current->delays)  in delayacct_freepages_start()
160 	if (current->delays)  in delayacct_freepages_end()
169 	if (current->delays)  in delayacct_thrashing_start()
178 	if (current->delays)  in delayacct_thrashing_end()
187 	if (current->delays)  in delayacct_swapin_start()
196 	if (current->delays)  in delayacct_swapin_end()
205 	if (current->delays)  in delayacct_compact_start()
214 	if (current->delays)  in delayacct_compact_end()
223 	if (current->delays)  in delayacct_wpcopy_start()
232 	if (current->delays)  in delayacct_wpcopy_end()
241 	if (task->delays)  in delayacct_irq()