uapi/linux/taskstats.h

1 /* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */
2 /* taskstats.h - exporting per-task statistics
22 /* Format for per-task data returned to userland when
23  *	- a task exits
24  *	- listener requests stats for a task
33  *	c) add new fields after version comment; maintain 64-bit alignment
57 	/* Delay accounting fields start
59 	 * All values, until comment "Delay accounting fields end" are
60 	 * available only if delay accounting is enabled, even though the last
63 	 * xxx_count is the number of delay values recorded
64 	 * xxx_delay_total is the corresponding cumulative delay in nanoseconds
70 	/* Delay waiting for cpu, while runnable
76 	/* Following four fields atomically updated using task->delays->lock */
78 	/* Delay waiting for synchronous block I/O to complete
84 	/* Delay waiting for page fault I/O (swap in only) */
88 	/* cpu "wall-clock" running time
103 	/* Delay accounting fields end */
127 	/* Accumulated RSS usage in duration of a task, in MBytes-usecs.
133 	__u64	coremem;		/* accumulated RSS usage in MB-usec */
137 	__u64	virtmem;		/* accumulated VM  usage in MB-usec */
142 	__u64	hiwater_rss;		/* High-watermark of RSS usage, in KB */
143 	__u64	hiwater_vm;		/* High-water VM usage, in KB */
146 	__u64	read_char;		/* bytes read */
148 	__u64	read_syscalls;		/* read syscalls */
153 	/* Per-task storage I/O accounting starts */
154 	__u64	read_bytes;		/* bytes of read I/O */
166 	/* Delay waiting for memory reclaim */
171 	/* Delay waiting for thrashing page */
175 	/* v10: 64-bit btime to avoid overflow */
176 	__u64	ac_btime64;		/* 64-bit begin time */
178 	/* v11: Delay waiting for memory compact */
199 	/* v13: Delay waiting for write-protect copy */
203 	/* v14: Delay waiting for IRQ/SOFTIRQ */
207 	/* v15: add Delay max and Delay min */
209 	/* v16: move Delay max and Delay min to the end of taskstat */
244 	TASKSTATS_CMD_GET,		/* user->kernel request/get-response */
245 	TASKSTATS_CMD_NEW,		/* kernel->user event */
249 #define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1)
262 #define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1)
273 #define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1)