[S390] cputime: add sparse checking and cleanup

Make cputime_t and cputime64_t nocast to enable sparse checking to
detect incorrect use of cputime. Drop the cputime macros for simple
scalar operations. The conversion macros are still needed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index b3f78d09a105..739ef2bf105c 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1629,10 +1629,8 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
         info.si_uid = __task_cred(tsk)->uid;
         rcu_read_unlock();
 
-        info.si_utime = cputime_to_clock_t(cputime_add(tsk->utime,
-                                tsk->signal->utime));
-        info.si_stime = cputime_to_clock_t(cputime_add(tsk->stime,
-                                tsk->signal->stime));
+        info.si_utime = cputime_to_clock_t(tsk->utime + tsk->signal->utime);
+        info.si_stime = cputime_to_clock_t(tsk->stime + tsk->signal->stime);
 
         info.si_status = tsk->exit_code & 0x7f;
         if (tsk->exit_code & 0x80)