]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - kernel/tsacct.c
2 * tsacct.c - System accounting over taskstats interface
4 * Copyright (C) Jay Lan, <jlan@sgi.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 #include <linux/kernel.h>
20 #include <linux/sched.h>
21 #include <linux/tsacct_kern.h>
22 #include <linux/acct.h>
23 #include <linux/jiffies.h>
26 * fill in basic accounting fields
28 void bacct_add_tsk(struct taskstats
*stats
, struct task_struct
*tsk
)
30 struct timespec uptime
, ts
;
33 BUILD_BUG_ON(TS_COMM_LEN
< TASK_COMM_LEN
);
35 /* calculate task elapsed time in timespec */
36 do_posix_clock_monotonic_gettime(&uptime
);
37 ts
= timespec_sub(uptime
, tsk
->start_time
);
38 /* rebase elapsed time to usec (should never be negative) */
39 ac_etime
= timespec_to_ns(&ts
);
40 do_div(ac_etime
, NSEC_PER_USEC
);
41 stats
->ac_etime
= ac_etime
;
42 stats
->ac_btime
= get_seconds() - ts
.tv_sec
;
43 if (thread_group_leader(tsk
)) {
44 stats
->ac_exitcode
= tsk
->exit_code
;
45 if (tsk
->flags
& PF_FORKNOEXEC
)
46 stats
->ac_flag
|= AFORK
;
48 if (tsk
->flags
& PF_SUPERPRIV
)
49 stats
->ac_flag
|= ASU
;
50 if (tsk
->flags
& PF_DUMPCORE
)
51 stats
->ac_flag
|= ACORE
;
52 if (tsk
->flags
& PF_SIGNALED
)
53 stats
->ac_flag
|= AXSIG
;
54 stats
->ac_nice
= task_nice(tsk
);
55 stats
->ac_sched
= tsk
->policy
;
56 stats
->ac_uid
= tsk
->uid
;
57 stats
->ac_gid
= tsk
->gid
;
58 stats
->ac_pid
= tsk
->pid
;
60 stats
->ac_ppid
= pid_alive(tsk
) ?
61 rcu_dereference(tsk
->real_parent
)->tgid
: 0;
63 stats
->ac_utime
= cputime_to_msecs(tsk
->utime
) * USEC_PER_MSEC
;
64 stats
->ac_stime
= cputime_to_msecs(tsk
->stime
) * USEC_PER_MSEC
;
65 stats
->ac_utimescaled
=
66 cputime_to_msecs(tsk
->utimescaled
) * USEC_PER_MSEC
;
67 stats
->ac_stimescaled
=
68 cputime_to_msecs(tsk
->stimescaled
) * USEC_PER_MSEC
;
69 stats
->ac_minflt
= tsk
->min_flt
;
70 stats
->ac_majflt
= tsk
->maj_flt
;
72 strncpy(stats
->ac_comm
, tsk
->comm
, sizeof(stats
->ac_comm
));
76 #ifdef CONFIG_TASK_XACCT
81 * fill in extended accounting fields
83 void xacct_add_tsk(struct taskstats
*stats
, struct task_struct
*p
)
87 /* convert pages-usec to Mbyte-usec */
88 stats
->coremem
= p
->acct_rss_mem1
* PAGE_SIZE
/ MB
;
89 stats
->virtmem
= p
->acct_vm_mem1
* PAGE_SIZE
/ MB
;
92 /* adjust to KB unit */
93 stats
->hiwater_rss
= mm
->hiwater_rss
* PAGE_SIZE
/ KB
;
94 stats
->hiwater_vm
= mm
->hiwater_vm
* PAGE_SIZE
/ KB
;
97 stats
->read_char
= p
->rchar
;
98 stats
->write_char
= p
->wchar
;
99 stats
->read_syscalls
= p
->syscr
;
100 stats
->write_syscalls
= p
->syscw
;
101 #ifdef CONFIG_TASK_IO_ACCOUNTING
102 stats
->read_bytes
= p
->ioac
.read_bytes
;
103 stats
->write_bytes
= p
->ioac
.write_bytes
;
104 stats
->cancelled_write_bytes
= p
->ioac
.cancelled_write_bytes
;
106 stats
->read_bytes
= 0;
107 stats
->write_bytes
= 0;
108 stats
->cancelled_write_bytes
= 0;
115 * acct_update_integrals - update mm integral fields in task_struct
116 * @tsk: task_struct for accounting
118 void acct_update_integrals(struct task_struct
*tsk
)
120 if (likely(tsk
->mm
)) {
121 cputime_t time
, dtime
;
122 struct timeval value
;
125 time
= tsk
->stime
+ tsk
->utime
;
126 dtime
= cputime_sub(time
, tsk
->acct_timexpd
);
127 jiffies_to_timeval(cputime_to_jiffies(dtime
), &value
);
128 delta
= value
.tv_sec
;
129 delta
= delta
* USEC_PER_SEC
+ value
.tv_usec
;
133 tsk
->acct_timexpd
= time
;
134 tsk
->acct_rss_mem1
+= delta
* get_mm_rss(tsk
->mm
);
135 tsk
->acct_vm_mem1
+= delta
* tsk
->mm
->total_vm
;
140 * acct_clear_integrals - clear the mm integral fields in task_struct
141 * @tsk: task_struct whose accounting fields are cleared
143 void acct_clear_integrals(struct task_struct
*tsk
)
145 tsk
->acct_timexpd
= 0;
146 tsk
->acct_rss_mem1
= 0;
147 tsk
->acct_vm_mem1
= 0;