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-rw-r--r--kernel/Makefile2
-rw-r--r--kernel/taskstats.c4
-rw-r--r--kernel/tsacct.c72
3 files changed, 77 insertions, 1 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index e210e8cf7237..aacaafb28b9d 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -49,7 +49,7 @@ obj-$(CONFIG_SECCOMP) += seccomp.o
obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
obj-$(CONFIG_RELAY) += relay.o
obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
-obj-$(CONFIG_TASKSTATS) += taskstats.o
+obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y)
# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index c451af2ddb50..6c38dce88e8c 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -18,6 +18,7 @@
#include <linux/kernel.h>
#include <linux/taskstats_kern.h>
+#include <linux/tsacct_kern.h>
#include <linux/delayacct.h>
#include <linux/cpumask.h>
#include <linux/percpu.h>
@@ -198,7 +199,10 @@ static int fill_pid(pid_t pid, struct task_struct *pidtsk,
*/
delayacct_add_tsk(stats, tsk);
+
+ /* fill in basic acct fields */
stats->version = TASKSTATS_VERSION;
+ bacct_add_tsk(stats, tsk);
/* Define err: label here if needed */
put_task_struct(tsk);
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));
+}
+