+++ /dev/null
-/* 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
-
-#include <linux/types.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 8
-#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 */
-
- /* Delay waiting for memory reclaim */
- __u64 freepages_count;
- __u64 freepages_delay_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_NULL, /* contains nothing */
- __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 */
git.samba.org / sfrench / cifs-2.6.git / blobdiff