cputime: Use accessors to read task cputime stats

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / posix-cpu-timers.c

diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index a278cad1d5d6225a52e6bf00b2fd90f98bbe916e..165d476984771efb75dd334df1c65f695cc921c7 100644 (file)
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -155,11 +155,19 @@ static void bump_cpu_timer(struct k_itimer *timer,
 
 static inline cputime_t prof_ticks(struct task_struct *p)
 {
-       return p->utime + p->stime;
+       cputime_t utime, stime;
+
+       task_cputime(p, &utime, &stime);
+
+       return utime + stime;
 }
 static inline cputime_t virt_ticks(struct task_struct *p)
 {
-       return p->utime;
+       cputime_t utime;
+
+       task_cputime(p, &utime, NULL);
+
+       return utime;
 }
 
 static int
@@ -471,18 +479,23 @@ static void cleanup_timers(struct list_head *head,
  */
 void posix_cpu_timers_exit(struct task_struct *tsk)
 {
+       cputime_t utime, stime;
+
        add_device_randomness((const void*) &tsk->se.sum_exec_runtime,
                                                sizeof(unsigned long long));
+       task_cputime(tsk, &utime, &stime);
        cleanup_timers(tsk->cpu_timers,
-                      tsk->utime, tsk->stime, tsk->se.sum_exec_runtime);
+                      utime, stime, tsk->se.sum_exec_runtime);
 
 }
 void posix_cpu_timers_exit_group(struct task_struct *tsk)
 {
        struct signal_struct *const sig = tsk->signal;
+       cputime_t utime, stime;
 
+       task_cputime(tsk, &utime, &stime);
        cleanup_timers(tsk->signal->cpu_timers,
-                      tsk->utime + sig->utime, tsk->stime + sig->stime,
+                      utime + sig->utime, stime + sig->stime,
                       tsk->se.sum_exec_runtime + sig->sum_sched_runtime);
 }
 
@@ -1226,11 +1239,14 @@ static inline int task_cputime_expired(const struct task_cputime *sample,
 static inline int fastpath_timer_check(struct task_struct *tsk)
 {
        struct signal_struct *sig;
+       cputime_t utime, stime;
+
+       task_cputime(tsk, &utime, &stime);
 
        if (!task_cputime_zero(&tsk->cputime_expires)) {
                struct task_cputime task_sample = {
-                       .utime = tsk->utime,
-                       .stime = tsk->stime,
+                       .utime = utime,
+                       .stime = stime,
                        .sum_exec_runtime = tsk->se.sum_exec_runtime
                };