mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-15 13:22:55 +00:00
db5fed26b2
ChangeLog:
Feedbacks from Andrew Morton:
- define TS_COMM_LEN to 32
- change acct_stimexpd field of task_struct to be of
cputime_t, which is to be used to save the tsk->stime
of last timer interrupt update.
- a new Documentation/accounting/taskstats-struct.txt
to describe fields of taskstats struct.
Feedback from Balbir Singh:
- keep the stime of a task to be zero when both stime
and utime are zero as recoreded in task_struct.
Misc:
- convert accumulated RSS/VM from platform dependent
pages-ticks to MBytes-usecs in the kernel
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Chris Sturtivant <csturtiv@sgi.com>
Cc: Tony Ernst <tee@sgi.com>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
|
|
* 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>
|
|
#include <linux/jiffies.h>
|
|
|
|
|
|
#define USEC_PER_TICK (USEC_PER_SEC/HZ)
|
|
/*
|
|
* 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);
|
|
ts = timespec_sub(uptime, current->group_leader->start_time);
|
|
/* rebase elapsed time to usec */
|
|
ac_etime = timespec_to_ns(&ts);
|
|
do_div(ac_etime, NSEC_PER_USEC);
|
|
stats->ac_etime = ac_etime;
|
|
stats->ac_btime = xtime.tv_sec - ts.tv_sec;
|
|
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;
|
|
stats->ac_ppid = (tsk->parent) ? tsk->parent->pid : 0;
|
|
stats->ac_utime = cputime_to_msecs(tsk->utime) * USEC_PER_MSEC;
|
|
stats->ac_stime = cputime_to_msecs(tsk->stime) * USEC_PER_MSEC;
|
|
stats->ac_minflt = tsk->min_flt;
|
|
stats->ac_majflt = tsk->maj_flt;
|
|
|
|
strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_TASK_XACCT
|
|
|
|
#define KB 1024
|
|
#define MB (1024*KB)
|
|
/*
|
|
* fill in extended accounting fields
|
|
*/
|
|
void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
|
|
{
|
|
/* 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;
|
|
if (p->mm) {
|
|
/* adjust to KB unit */
|
|
stats->hiwater_rss = p->mm->hiwater_rss * PAGE_SIZE / KB;
|
|
stats->hiwater_vm = p->mm->hiwater_vm * PAGE_SIZE / KB;
|
|
}
|
|
stats->read_char = p->rchar;
|
|
stats->write_char = p->wchar;
|
|
stats->read_syscalls = p->syscr;
|
|
stats->write_syscalls = p->syscw;
|
|
}
|
|
#undef KB
|
|
#undef MB
|
|
|
|
/**
|
|
* 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)) {
|
|
long delta = cputime_to_jiffies(
|
|
cputime_sub(tsk->stime, tsk->acct_stimexpd));
|
|
|
|
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;
|
|
}
|
|
#endif
|