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-rw-r--r--fs/proc/array.c7
-rw-r--r--include/linux/sched.h2
-rw-r--r--kernel/fork.c3
3 files changed, 3 insertions, 9 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 64db2bceac59..d7f9199217bb 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -473,13 +473,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
priority = task_prio(task);
nice = task_nice(task);
- /* Temporary variable needed for gcc-2.96 */
- /* convert timespec -> nsec*/
- start_time =
- (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
- + task->real_start_time.tv_nsec;
/* convert nsec -> ticks */
- start_time = nsec_to_clock_t(start_time);
+ start_time = nsec_to_clock_t(task->real_start_time);
seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
seq_put_decimal_ll(m, ' ', ppid);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 306f4f0c987a..67678fa76f99 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1368,7 +1368,7 @@ struct task_struct {
#endif
unsigned long nvcsw, nivcsw; /* context switch counts */
struct timespec start_time; /* monotonic time */
- struct timespec real_start_time; /* boot based time */
+ u64 real_start_time; /* boot based time in nsec */
/* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
unsigned long min_flt, maj_flt;
diff --git a/kernel/fork.c b/kernel/fork.c
index 8f541930ce26..a7ab82db2f60 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1263,8 +1263,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
posix_cpu_timers_init(p);
ktime_get_ts(&p->start_time);
- p->real_start_time = p->start_time;
- monotonic_to_bootbased(&p->real_start_time);
+ p->real_start_time = ktime_get_boot_ns();
p->io_context = NULL;
p->audit_context = NULL;
if (clone_flags & CLONE_THREAD)
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