[PATCH] s390: cputime_t fixes

There are some more places where the use of cputime_t instead of an integer
type and the associated macros is necessary for the virtual cputime accounting
on s390.  Affected are the s390 specific appldata code and BSD process
accounting.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 7 deletions

diff --git a/kernel/acct.c b/kernel/acct.c
index 6312d6bd43e3..38d57fa6b78f 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -427,6 +427,7 @@ static void do_acct_process(long exitcode, struct file *file)
         u64 elapsed;
         u64 run_time;
         struct timespec uptime;
+        unsigned long jiffies;
 
         /*
          * First check to see if there is enough free_space to continue
@@ -467,12 +468,12 @@ static void do_acct_process(long exitcode, struct file *file)
 #endif
         do_div(elapsed, AHZ);
         ac.ac_btime = xtime.tv_sec - elapsed;
-        ac.ac_utime = encode_comp_t(jiffies_to_AHZ(
-                                            current->signal->utime +
-                                            current->group_leader->utime));
-        ac.ac_stime = encode_comp_t(jiffies_to_AHZ(
-                                            current->signal->stime +
-                                            current->group_leader->stime));
+        jiffies = cputime_to_jiffies(cputime_add(current->group_leader->utime,
+                                                 current->signal->utime));
+        ac.ac_utime = encode_comp_t(jiffies_to_AHZ(jiffies));
+        jiffies = cputime_to_jiffies(cputime_add(current->group_leader->stime,
+                                                 current->signal->stime));
+        ac.ac_stime = encode_comp_t(jiffies_to_AHZ(jiffies));
         /* we really need to bite the bullet and change layout */
         ac.ac_uid = current->uid;
         ac.ac_gid = current->gid;
@@ -580,7 +581,8 @@ void acct_process(long exitcode)
 void acct_update_integrals(struct task_struct *tsk)
 {
         if (likely(tsk->mm)) {
-                long delta = tsk->stime - tsk->acct_stimexpd;
+                long delta =
+                        cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd;
 
                 if (delta == 0)
                         return;