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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>
24
25
26
27
28void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
29{
30 const struct cred *tcred;
31 struct timespec uptime, ts;
32 u64 ac_etime;
33
34 BUILD_BUG_ON(TS_COMM_LEN < TASK_COMM_LEN);
35
36
37 do_posix_clock_monotonic_gettime(&uptime);
38 ts = timespec_sub(uptime, tsk->start_time);
39
40 ac_etime = timespec_to_ns(&ts);
41 do_div(ac_etime, NSEC_PER_USEC);
42 stats->ac_etime = ac_etime;
43 stats->ac_btime = get_seconds() - ts.tv_sec;
44 if (thread_group_leader(tsk)) {
45 stats->ac_exitcode = tsk->exit_code;
46 if (tsk->flags & PF_FORKNOEXEC)
47 stats->ac_flag |= AFORK;
48 }
49 if (tsk->flags & PF_SUPERPRIV)
50 stats->ac_flag |= ASU;
51 if (tsk->flags & PF_DUMPCORE)
52 stats->ac_flag |= ACORE;
53 if (tsk->flags & PF_SIGNALED)
54 stats->ac_flag |= AXSIG;
55 stats->ac_nice = task_nice(tsk);
56 stats->ac_sched = tsk->policy;
57 stats->ac_pid = tsk->pid;
58 rcu_read_lock();
59 tcred = __task_cred(tsk);
60 stats->ac_uid = tcred->uid;
61 stats->ac_gid = tcred->gid;
62 stats->ac_ppid = pid_alive(tsk) ?
63 rcu_dereference(tsk->real_parent)->tgid : 0;
64 rcu_read_unlock();
65 stats->ac_utime = cputime_to_msecs(tsk->utime) * USEC_PER_MSEC;
66 stats->ac_stime = cputime_to_msecs(tsk->stime) * USEC_PER_MSEC;
67 stats->ac_utimescaled =
68 cputime_to_msecs(tsk->utimescaled) * USEC_PER_MSEC;
69 stats->ac_stimescaled =
70 cputime_to_msecs(tsk->stimescaled) * USEC_PER_MSEC;
71 stats->ac_minflt = tsk->min_flt;
72 stats->ac_majflt = tsk->maj_flt;
73
74 strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
75}
76
77
78#ifdef CONFIG_TASK_XACCT
79
80#define KB 1024
81#define MB (1024*KB)
82
83
84
85void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
86{
87 struct mm_struct *mm;
88
89
90 stats->coremem = p->acct_rss_mem1 * PAGE_SIZE / MB;
91 stats->virtmem = p->acct_vm_mem1 * PAGE_SIZE / MB;
92 mm = get_task_mm(p);
93 if (mm) {
94
95 stats->hiwater_rss = get_mm_hiwater_rss(mm) * PAGE_SIZE / KB;
96 stats->hiwater_vm = get_mm_hiwater_vm(mm) * PAGE_SIZE / KB;
97 mmput(mm);
98 }
99 stats->read_char = p->ioac.rchar;
100 stats->write_char = p->ioac.wchar;
101 stats->read_syscalls = p->ioac.syscr;
102 stats->write_syscalls = p->ioac.syscw;
103#ifdef CONFIG_TASK_IO_ACCOUNTING
104 stats->read_bytes = p->ioac.read_bytes;
105 stats->write_bytes = p->ioac.write_bytes;
106 stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes;
107#else
108 stats->read_bytes = 0;
109 stats->write_bytes = 0;
110 stats->cancelled_write_bytes = 0;
111#endif
112}
113#undef KB
114#undef MB
115
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118
119
120void acct_update_integrals(struct task_struct *tsk)
121{
122 if (likely(tsk->mm)) {
123 cputime_t time, dtime;
124 struct timeval value;
125 unsigned long flags;
126 u64 delta;
127
128 local_irq_save(flags);
129 time = tsk->stime + tsk->utime;
130 dtime = cputime_sub(time, tsk->acct_timexpd);
131 jiffies_to_timeval(cputime_to_jiffies(dtime), &value);
132 delta = value.tv_sec;
133 delta = delta * USEC_PER_SEC + value.tv_usec;
134
135 if (delta == 0)
136 goto out;
137 tsk->acct_timexpd = time;
138 tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
139 tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
140 out:
141 local_irq_restore(flags);
142 }
143}
144
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147
148
149void acct_clear_integrals(struct task_struct *tsk)
150{
151 tsk->acct_timexpd = 0;
152 tsk->acct_rss_mem1 = 0;
153 tsk->acct_vm_mem1 = 0;
154}
155#endif
156