| /* taskstats.h - exporting per-task statistics | |
| * | |
| * Copyright (C) Shailabh Nagar, IBM Corp. 2006 | |
| * (C) Balbir Singh, IBM Corp. 2006 | |
| * (C) Jay Lan, SGI, 2006 | |
| * | |
| * This program is free software; you can redistribute it and/or modify it | |
| * under the terms of version 2.1 of the GNU Lesser General Public License | |
| * as published by the Free Software Foundation. | |
| * | |
| * This program is distributed in the hope that it would be useful, but | |
| * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| */ | |
| #ifndef _LINUX_TASKSTATS_H | |
| #define _LINUX_TASKSTATS_H | |
| /* Format for per-task data returned to userland when | |
| * - a task exits | |
| * - listener requests stats for a task | |
| * | |
| * The struct is versioned. Newer versions should only add fields to | |
| * the bottom of the struct to maintain backward compatibility. | |
| * | |
| * | |
| * To add new fields | |
| * a) bump up TASKSTATS_VERSION | |
| * b) add comment indicating new version number at end of struct | |
| * c) add new fields after version comment; maintain 64-bit alignment | |
| */ | |
| #define TASKSTATS_VERSION 6 | |
| #define TS_COMM_LEN 32 /* should be >= TASK_COMM_LEN | |
| * in linux/sched.h */ | |
| struct taskstats { | |
| /* The version number of this struct. This field is always set to | |
| * TAKSTATS_VERSION, which is defined in <linux/taskstats.h>. | |
| * Each time the struct is changed, the value should be incremented. | |
| */ | |
| __u16 version; | |
| __u32 ac_exitcode; /* Exit status */ | |
| /* The accounting flags of a task as defined in <linux/acct.h> | |
| * Defined values are AFORK, ASU, ACOMPAT, ACORE, and AXSIG. | |
| */ | |
| __u8 ac_flag; /* Record flags */ | |
| __u8 ac_nice; /* task_nice */ | |
| /* Delay accounting fields start | |
| * | |
| * All values, until comment "Delay accounting fields end" are | |
| * available only if delay accounting is enabled, even though the last | |
| * few fields are not delays | |
| * | |
| * xxx_count is the number of delay values recorded | |
| * xxx_delay_total is the corresponding cumulative delay in nanoseconds | |
| * | |
| * xxx_delay_total wraps around to zero on overflow | |
| * xxx_count incremented regardless of overflow | |
| */ | |
| /* Delay waiting for cpu, while runnable | |
| * count, delay_total NOT updated atomically | |
| */ | |
| __u64 cpu_count __attribute__((aligned(8))); | |
| __u64 cpu_delay_total; | |
| /* Following four fields atomically updated using task->delays->lock */ | |
| /* Delay waiting for synchronous block I/O to complete | |
| * does not account for delays in I/O submission | |
| */ | |
| __u64 blkio_count; | |
| __u64 blkio_delay_total; | |
| /* Delay waiting for page fault I/O (swap in only) */ | |
| __u64 swapin_count; | |
| __u64 swapin_delay_total; | |
| /* cpu "wall-clock" running time | |
| * On some architectures, value will adjust for cpu time stolen | |
| * from the kernel in involuntary waits due to virtualization. | |
| * Value is cumulative, in nanoseconds, without a corresponding count | |
| * and wraps around to zero silently on overflow | |
| */ | |
| __u64 cpu_run_real_total; | |
| /* cpu "virtual" running time | |
| * Uses time intervals seen by the kernel i.e. no adjustment | |
| * for kernel's involuntary waits due to virtualization. | |
| * Value is cumulative, in nanoseconds, without a corresponding count | |
| * and wraps around to zero silently on overflow | |
| */ | |
| __u64 cpu_run_virtual_total; | |
| /* Delay accounting fields end */ | |
| /* version 1 ends here */ | |
| /* Basic Accounting Fields start */ | |
| char ac_comm[TS_COMM_LEN]; /* Command name */ | |
| __u8 ac_sched __attribute__((aligned(8))); | |
| /* Scheduling discipline */ | |
| __u8 ac_pad[3]; | |
| __u32 ac_uid __attribute__((aligned(8))); | |
| /* User ID */ | |
| __u32 ac_gid; /* Group ID */ | |
| __u32 ac_pid; /* Process ID */ | |
| __u32 ac_ppid; /* Parent process ID */ | |
| __u32 ac_btime; /* Begin time [sec since 1970] */ | |
| __u64 ac_etime __attribute__((aligned(8))); | |
| /* Elapsed time [usec] */ | |
| __u64 ac_utime; /* User CPU time [usec] */ | |
| __u64 ac_stime; /* SYstem CPU time [usec] */ | |
| __u64 ac_minflt; /* Minor Page Fault Count */ | |
| __u64 ac_majflt; /* Major Page Fault Count */ | |
| /* Basic Accounting Fields end */ | |
| /* Extended accounting fields start */ | |
| /* Accumulated RSS usage in duration of a task, in MBytes-usecs. | |
| * The current rss usage is added to this counter every time | |
| * a tick is charged to a task's system time. So, at the end we | |
| * will have memory usage multiplied by system time. Thus an | |
| * average usage per system time unit can be calculated. | |
| */ | |
| __u64 coremem; /* accumulated RSS usage in MB-usec */ | |
| /* Accumulated virtual memory usage in duration of a task. | |
| * Same as acct_rss_mem1 above except that we keep track of VM usage. | |
| */ | |
| __u64 virtmem; /* accumulated VM usage in MB-usec */ | |
| /* High watermark of RSS and virtual memory usage in duration of | |
| * a task, in KBytes. | |
| */ | |
| __u64 hiwater_rss; /* High-watermark of RSS usage, in KB */ | |
| __u64 hiwater_vm; /* High-water VM usage, in KB */ | |
| /* The following four fields are I/O statistics of a task. */ | |
| __u64 read_char; /* bytes read */ | |
| __u64 write_char; /* bytes written */ | |
| __u64 read_syscalls; /* read syscalls */ | |
| __u64 write_syscalls; /* write syscalls */ | |
| /* Extended accounting fields end */ | |
| #define TASKSTATS_HAS_IO_ACCOUNTING | |
| /* Per-task storage I/O accounting starts */ | |
| __u64 read_bytes; /* bytes of read I/O */ | |
| __u64 write_bytes; /* bytes of write I/O */ | |
| __u64 cancelled_write_bytes; /* bytes of cancelled write I/O */ | |
| __u64 nvcsw; /* voluntary_ctxt_switches */ | |
| __u64 nivcsw; /* nonvoluntary_ctxt_switches */ | |
| /* time accounting for SMT machines */ | |
| __u64 ac_utimescaled; /* utime scaled on frequency etc */ | |
| __u64 ac_stimescaled; /* stime scaled on frequency etc */ | |
| __u64 cpu_scaled_run_real_total; /* scaled cpu_run_real_total */ | |
| }; | |
| /* | |
| * Commands sent from userspace | |
| * Not versioned. New commands should only be inserted at the enum's end | |
| * prior to __TASKSTATS_CMD_MAX | |
| */ | |
| enum { | |
| TASKSTATS_CMD_UNSPEC = 0, /* Reserved */ | |
| TASKSTATS_CMD_GET, /* user->kernel request/get-response */ | |
| TASKSTATS_CMD_NEW, /* kernel->user event */ | |
| __TASKSTATS_CMD_MAX, | |
| }; | |
| #define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1) | |
| enum { | |
| TASKSTATS_TYPE_UNSPEC = 0, /* Reserved */ | |
| TASKSTATS_TYPE_PID, /* Process id */ | |
| TASKSTATS_TYPE_TGID, /* Thread group id */ | |
| TASKSTATS_TYPE_STATS, /* taskstats structure */ | |
| TASKSTATS_TYPE_AGGR_PID, /* contains pid + stats */ | |
| TASKSTATS_TYPE_AGGR_TGID, /* contains tgid + stats */ | |
| __TASKSTATS_TYPE_MAX, | |
| }; | |
| #define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1) | |
| enum { | |
| TASKSTATS_CMD_ATTR_UNSPEC = 0, | |
| TASKSTATS_CMD_ATTR_PID, | |
| TASKSTATS_CMD_ATTR_TGID, | |
| TASKSTATS_CMD_ATTR_REGISTER_CPUMASK, | |
| TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK, | |
| __TASKSTATS_CMD_ATTR_MAX, | |
| }; | |
| #define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1) | |
| /* NETLINK_GENERIC related info */ | |
| #define TASKSTATS_GENL_NAME "TASKSTATS" | |
| #define TASKSTATS_GENL_VERSION 0x1 | |
| #endif /* _LINUX_TASKSTATS_H */ |