mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 21:26:39 +07:00
32ef5517c2
Introduce a trivial, mostly empty <linux/sched/cputime.h> header to prepare for the moving of cputime functionality out of sched.h. Update all code that relies on these facilities. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
186 lines
5.1 KiB
C
186 lines
5.1 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/signal.h>
|
|
#include <linux/sched/mm.h>
|
|
#include <linux/sched/cputime.h>
|
|
#include <linux/tsacct_kern.h>
|
|
#include <linux/acct.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/mm.h>
|
|
|
|
/*
|
|
* fill in basic accounting fields
|
|
*/
|
|
void bacct_add_tsk(struct user_namespace *user_ns,
|
|
struct pid_namespace *pid_ns,
|
|
struct taskstats *stats, struct task_struct *tsk)
|
|
{
|
|
const struct cred *tcred;
|
|
u64 utime, stime, utimescaled, stimescaled;
|
|
u64 delta;
|
|
|
|
BUILD_BUG_ON(TS_COMM_LEN < TASK_COMM_LEN);
|
|
|
|
/* calculate task elapsed time in nsec */
|
|
delta = ktime_get_ns() - tsk->start_time;
|
|
/* Convert to micro seconds */
|
|
do_div(delta, NSEC_PER_USEC);
|
|
stats->ac_etime = delta;
|
|
/* Convert to seconds for btime */
|
|
do_div(delta, USEC_PER_SEC);
|
|
stats->ac_btime = get_seconds() - delta;
|
|
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_pid = task_pid_nr_ns(tsk, pid_ns);
|
|
rcu_read_lock();
|
|
tcred = __task_cred(tsk);
|
|
stats->ac_uid = from_kuid_munged(user_ns, tcred->uid);
|
|
stats->ac_gid = from_kgid_munged(user_ns, tcred->gid);
|
|
stats->ac_ppid = pid_alive(tsk) ?
|
|
task_tgid_nr_ns(rcu_dereference(tsk->real_parent), pid_ns) : 0;
|
|
rcu_read_unlock();
|
|
|
|
task_cputime(tsk, &utime, &stime);
|
|
stats->ac_utime = div_u64(utime, NSEC_PER_USEC);
|
|
stats->ac_stime = div_u64(stime, NSEC_PER_USEC);
|
|
|
|
task_cputime_scaled(tsk, &utimescaled, &stimescaled);
|
|
stats->ac_utimescaled = div_u64(utimescaled, NSEC_PER_USEC);
|
|
stats->ac_stimescaled = div_u64(stimescaled, NSEC_PER_USEC);
|
|
|
|
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)
|
|
#define KB_MASK (~(KB-1))
|
|
/*
|
|
* fill in extended accounting fields
|
|
*/
|
|
void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
|
|
{
|
|
struct mm_struct *mm;
|
|
|
|
/* convert pages-nsec/1024 to Mbyte-usec, see __acct_update_integrals */
|
|
stats->coremem = p->acct_rss_mem1 * PAGE_SIZE;
|
|
do_div(stats->coremem, 1000 * KB);
|
|
stats->virtmem = p->acct_vm_mem1 * PAGE_SIZE;
|
|
do_div(stats->virtmem, 1000 * KB);
|
|
mm = get_task_mm(p);
|
|
if (mm) {
|
|
/* adjust to KB unit */
|
|
stats->hiwater_rss = get_mm_hiwater_rss(mm) * PAGE_SIZE / KB;
|
|
stats->hiwater_vm = get_mm_hiwater_vm(mm) * PAGE_SIZE / KB;
|
|
mmput(mm);
|
|
}
|
|
stats->read_char = p->ioac.rchar & KB_MASK;
|
|
stats->write_char = p->ioac.wchar & KB_MASK;
|
|
stats->read_syscalls = p->ioac.syscr & KB_MASK;
|
|
stats->write_syscalls = p->ioac.syscw & KB_MASK;
|
|
#ifdef CONFIG_TASK_IO_ACCOUNTING
|
|
stats->read_bytes = p->ioac.read_bytes & KB_MASK;
|
|
stats->write_bytes = p->ioac.write_bytes & KB_MASK;
|
|
stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes & KB_MASK;
|
|
#else
|
|
stats->read_bytes = 0;
|
|
stats->write_bytes = 0;
|
|
stats->cancelled_write_bytes = 0;
|
|
#endif
|
|
}
|
|
#undef KB
|
|
#undef MB
|
|
|
|
static void __acct_update_integrals(struct task_struct *tsk,
|
|
u64 utime, u64 stime)
|
|
{
|
|
u64 time, delta;
|
|
|
|
if (!likely(tsk->mm))
|
|
return;
|
|
|
|
time = stime + utime;
|
|
delta = time - tsk->acct_timexpd;
|
|
|
|
if (delta < TICK_NSEC)
|
|
return;
|
|
|
|
tsk->acct_timexpd = time;
|
|
/*
|
|
* Divide by 1024 to avoid overflow, and to avoid division.
|
|
* The final unit reported to userspace is Mbyte-usecs,
|
|
* the rest of the math is done in xacct_add_tsk.
|
|
*/
|
|
tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm) >> 10;
|
|
tsk->acct_vm_mem1 += delta * tsk->mm->total_vm >> 10;
|
|
}
|
|
|
|
/**
|
|
* acct_update_integrals - update mm integral fields in task_struct
|
|
* @tsk: task_struct for accounting
|
|
*/
|
|
void acct_update_integrals(struct task_struct *tsk)
|
|
{
|
|
u64 utime, stime;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
task_cputime(tsk, &utime, &stime);
|
|
__acct_update_integrals(tsk, utime, stime);
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/**
|
|
* acct_account_cputime - update mm integral after cputime update
|
|
* @tsk: task_struct for accounting
|
|
*/
|
|
void acct_account_cputime(struct task_struct *tsk)
|
|
{
|
|
__acct_update_integrals(tsk, tsk->utime, tsk->stime);
|
|
}
|
|
|
|
/**
|
|
* 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_timexpd = 0;
|
|
tsk->acct_rss_mem1 = 0;
|
|
tsk->acct_vm_mem1 = 0;
|
|
}
|
|
#endif
|