Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

[pandora-kernel.git] / kernel / tsacct.c

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 4ab1b58..8ebcd85 100644 (file)
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -28,14 +28,14 @@
 void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
 {
        struct timespec uptime, ts;
-       s64 ac_etime;
+       u64 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, tsk->start_time);
-       /* rebase elapsed time to usec */
+       /* rebase elapsed time to usec (should never be negative) */
        ac_etime = timespec_to_ns(&ts);
        do_div(ac_etime, NSEC_PER_USEC);
        stats->ac_etime = ac_etime;
@@ -84,9 +84,9 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
 {
        struct mm_struct *mm;
 
-       /* 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;
+       /* convert pages-usec to Mbyte-usec */
+       stats->coremem = p->acct_rss_mem1 * PAGE_SIZE / MB;
+       stats->virtmem = p->acct_vm_mem1 * PAGE_SIZE / MB;
        mm = get_task_mm(p);
        if (mm) {
                /* adjust to KB unit */
@@ -94,10 +94,10 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
                stats->hiwater_vm    = mm->hiwater_vm * PAGE_SIZE / KB;
                mmput(mm);
        }
-       stats->read_char        = p->rchar;
-       stats->write_char       = p->wchar;
-       stats->read_syscalls    = p->syscr;
-       stats->write_syscalls   = p->syscw;
+       stats->read_char        = p->ioac.rchar;
+       stats->write_char       = p->ioac.wchar;
+       stats->read_syscalls    = p->ioac.syscr;
+       stats->write_syscalls   = p->ioac.syscw;
 #ifdef CONFIG_TASK_IO_ACCOUNTING
        stats->read_bytes       = p->ioac.read_bytes;
        stats->write_bytes      = p->ioac.write_bytes;
@@ -118,12 +118,19 @@ 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(
-                       cputime_sub(tsk->stime, tsk->acct_stimexpd));
+               cputime_t time, dtime;
+               struct timeval value;
+               u64 delta;
+
+               time = tsk->stime + tsk->utime;
+               dtime = cputime_sub(time, tsk->acct_timexpd);
+               jiffies_to_timeval(cputime_to_jiffies(dtime), &value);
+               delta = value.tv_sec;
+               delta = delta * USEC_PER_SEC + value.tv_usec;
 
                if (delta == 0)
                        return;
-               tsk->acct_stimexpd = tsk->stime;
+               tsk->acct_timexpd = time;
                tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
                tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
        }
@@ -135,7 +142,7 @@ void acct_update_integrals(struct task_struct *tsk)
  */
 void acct_clear_integrals(struct task_struct *tsk)
 {
-       tsk->acct_stimexpd = 0;
+       tsk->acct_timexpd = 0;
        tsk->acct_rss_mem1 = 0;
        tsk->acct_vm_mem1 = 0;
 }