diff options
Diffstat (limited to 'kernel/posix-cpu-timers.c')
| -rw-r--r-- | kernel/posix-cpu-timers.c | 27 |
1 files changed, 3 insertions, 24 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 125cb67daa21..a278cad1d5d6 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -9,6 +9,7 @@ #include <asm/uaccess.h> #include <linux/kernel_stat.h> #include <trace/events/timer.h> +#include <linux/random.h> /* * Called after updating RLIMIT_CPU to run cpu timer and update @@ -217,30 +218,6 @@ static int cpu_clock_sample(const clockid_t which_clock, struct task_struct *p, return 0; } -void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times) -{ - struct signal_struct *sig = tsk->signal; - struct task_struct *t; - - times->utime = sig->utime; - times->stime = sig->stime; - times->sum_exec_runtime = sig->sum_sched_runtime; - - rcu_read_lock(); - /* make sure we can trust tsk->thread_group list */ - if (!likely(pid_alive(tsk))) - goto out; - - t = tsk; - do { - times->utime += t->utime; - times->stime += t->stime; - times->sum_exec_runtime += task_sched_runtime(t); - } while_each_thread(tsk, t); -out: - rcu_read_unlock(); -} - static void update_gt_cputime(struct task_cputime *a, struct task_cputime *b) { if (b->utime > a->utime) @@ -494,6 +471,8 @@ static void cleanup_timers(struct list_head *head, */ void posix_cpu_timers_exit(struct task_struct *tsk) { + add_device_randomness((const void*) &tsk->se.sum_exec_runtime, + sizeof(unsigned long long)); cleanup_timers(tsk->cpu_timers, tsk->utime, tsk->stime, tsk->se.sum_exec_runtime); |