[PATCH] csa accounting taskstats update

[linux-2.6-omap-h63xx.git] / kernel / tsacct.c

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 47c71daa416f80fd3dea1a1408e6ca60f1fce2fc..db443221ba5ba0038ee3bd40270f6b5a2a8922b7 100644 (file)
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -20,6 +20,7 @@
 #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)
@@ -62,33 +63,35 @@ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
        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));
 }
 
 
 #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)
 {
-       stats->acct_rss_mem1 = p->acct_rss_mem1;
-       stats->acct_vm_mem1  = p->acct_vm_mem1;
+       /* 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) {
-               stats->hiwater_rss   = p->mm->hiwater_rss;
-               stats->hiwater_vm    = p->mm->hiwater_vm;
+               /* 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
@@ -97,8 +100,8 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
 void acct_update_integrals(struct task_struct *tsk)
 {
        if (likely(tsk->mm)) {
-               long delta =
-                       cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd;
+               long delta = cputime_to_jiffies(
+                       cputime_sub(tsk->stime, tsk->acct_stimexpd));
 
                if (delta == 0)
                        return;