Blame view
kernel/tsacct.c
3.91 KB
f3cef7a99
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |
/* * tsacct.c - System accounting over taskstats interface * * Copyright (C) Jay Lan, <jlan@sgi.com> * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/tsacct_kern.h> #include <linux/acct.h> |
db5fed26b
|
23 |
#include <linux/jiffies.h> |
f3cef7a99
|
24 |
|
f3cef7a99
|
25 26 27 28 29 30 31 32 33 34 35 36 |
/* * fill in basic accounting fields */ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk) { struct timespec uptime, ts; s64 ac_etime; BUILD_BUG_ON(TS_COMM_LEN < TASK_COMM_LEN); /* calculate task elapsed time in timespec */ do_posix_clock_monotonic_gettime(&uptime); |
05d5bcd60
|
37 |
ts = timespec_sub(uptime, tsk->start_time); |
f3cef7a99
|
38 39 40 41 |
/* rebase elapsed time to usec */ ac_etime = timespec_to_ns(&ts); do_div(ac_etime, NSEC_PER_USEC); stats->ac_etime = ac_etime; |
2c6b47de1
|
42 |
stats->ac_btime = get_seconds() - ts.tv_sec; |
f3cef7a99
|
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 |
if (thread_group_leader(tsk)) { stats->ac_exitcode = tsk->exit_code; if (tsk->flags & PF_FORKNOEXEC) stats->ac_flag |= AFORK; } if (tsk->flags & PF_SUPERPRIV) stats->ac_flag |= ASU; if (tsk->flags & PF_DUMPCORE) stats->ac_flag |= ACORE; if (tsk->flags & PF_SIGNALED) stats->ac_flag |= AXSIG; stats->ac_nice = task_nice(tsk); stats->ac_sched = tsk->policy; stats->ac_uid = tsk->uid; stats->ac_gid = tsk->gid; stats->ac_pid = tsk->pid; |
05d5bcd60
|
59 60 61 62 |
rcu_read_lock(); stats->ac_ppid = pid_alive(tsk) ? rcu_dereference(tsk->real_parent)->tgid : 0; rcu_read_unlock(); |
f3cef7a99
|
63 64 |
stats->ac_utime = cputime_to_msecs(tsk->utime) * USEC_PER_MSEC; stats->ac_stime = cputime_to_msecs(tsk->stime) * USEC_PER_MSEC; |
c66f08be7
|
65 66 67 68 |
stats->ac_utimescaled = cputime_to_msecs(tsk->utimescaled) * USEC_PER_MSEC; stats->ac_stimescaled = cputime_to_msecs(tsk->stimescaled) * USEC_PER_MSEC; |
f3cef7a99
|
69 70 |
stats->ac_minflt = tsk->min_flt; stats->ac_majflt = tsk->maj_flt; |
f3cef7a99
|
71 72 73 |
strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm)); } |
9acc18535
|
74 75 |
#ifdef CONFIG_TASK_XACCT |
db5fed26b
|
76 77 78 |
#define KB 1024 #define MB (1024*KB) |
9acc18535
|
79 80 81 82 83 |
/* * fill in extended accounting fields */ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p) { |
f0ec1aaf5
|
84 |
struct mm_struct *mm; |
db5fed26b
|
85 86 87 |
/* convert pages-jiffies to Mbyte-usec */ stats->coremem = jiffies_to_usecs(p->acct_rss_mem1) * PAGE_SIZE / MB; stats->virtmem = jiffies_to_usecs(p->acct_vm_mem1) * PAGE_SIZE / MB; |
f0ec1aaf5
|
88 89 |
mm = get_task_mm(p); if (mm) { |
db5fed26b
|
90 |
/* adjust to KB unit */ |
f0ec1aaf5
|
91 92 93 |
stats->hiwater_rss = mm->hiwater_rss * PAGE_SIZE / KB; stats->hiwater_vm = mm->hiwater_vm * PAGE_SIZE / KB; mmput(mm); |
9acc18535
|
94 95 96 97 98 |
} stats->read_char = p->rchar; stats->write_char = p->wchar; stats->read_syscalls = p->syscr; stats->write_syscalls = p->syscw; |
4a7864ca6
|
99 100 101 102 103 104 105 106 107 |
#ifdef CONFIG_TASK_IO_ACCOUNTING stats->read_bytes = p->ioac.read_bytes; stats->write_bytes = p->ioac.write_bytes; stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes; #else stats->read_bytes = 0; stats->write_bytes = 0; stats->cancelled_write_bytes = 0; #endif |
9acc18535
|
108 |
} |
db5fed26b
|
109 110 |
#undef KB #undef MB |
8f0ab5147
|
111 112 113 114 115 116 117 118 |
/** * acct_update_integrals - update mm integral fields in task_struct * @tsk: task_struct for accounting */ void acct_update_integrals(struct task_struct *tsk) { if (likely(tsk->mm)) { |
db5fed26b
|
119 120 |
long delta = cputime_to_jiffies( cputime_sub(tsk->stime, tsk->acct_stimexpd)); |
8f0ab5147
|
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 |
if (delta == 0) return; tsk->acct_stimexpd = tsk->stime; tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm); tsk->acct_vm_mem1 += delta * tsk->mm->total_vm; } } /** * acct_clear_integrals - clear the mm integral fields in task_struct * @tsk: task_struct whose accounting fields are cleared */ void acct_clear_integrals(struct task_struct *tsk) { tsk->acct_stimexpd = 0; tsk->acct_rss_mem1 = 0; tsk->acct_vm_mem1 = 0; } |
9acc18535
|
140 |
#endif |