diff options
| author | Jay Lan <jlan@engr.sgi.com> | 2006-09-30 23:28:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 00:39:29 -0700 |
| commit | f3cef7a99469afc159fec3a61b42dc7ca5b6824f (patch) | |
| tree | b1805a0d0b4a273b8ce0a245c17570ff18abdc5b /kernel/tsacct.c | |
| parent | 7d1bdca9b06acb3df07329eaff72d5eaf1543287 (diff) | |
| download | lwn-f3cef7a99469afc159fec3a61b42dc7ca5b6824f.tar.gz lwn-f3cef7a99469afc159fec3a61b42dc7ca5b6824f.zip | |
[PATCH] csa: basic accounting over taskstats
Add some basic accounting fields to the taskstats struct, add a new
kernel/tsacct.c to handle basic accounting data handling upon exit. A handle
is added to taskstats.c to invoke the basic accounting data handling.
Signed-off-by: Jay Lan <jlan@sgi.com>
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>
Cc: "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/tsacct.c')
| -rw-r--r-- | kernel/tsacct.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/kernel/tsacct.c b/kernel/tsacct.c new file mode 100644 index 000000000000..899067950a88 --- /dev/null +++ b/kernel/tsacct.c @@ -0,0 +1,72 @@ +/* + * 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> + + +#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; + /* Each process gets a minimum of one usec cpu time */ + if ((stats->ac_utime == 0) && (stats->ac_stime == 0)) { + stats->ac_stime = 1; + } + + strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm)); +} + |