fork: Use ktime_get_ts()

do_posix_clock_monotonic_gettime() is a leftover from the initial
posix timer implementation which maps to ktime_get_ts().

Signed-off-by: Thomas Gleixner <[e-mail]>
Cc: John Stultz <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Oleg Nesterov <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Thomas Gleixner <[e-mail]>
Cc: Oleg Nesterov <[e-mail]>

kernel/fork.c

···
 
 	posix_cpu_timers_init(p);
 
-	do_posix_clock_monotonic_gettime(&p->start_time);
+	ktime_get_ts(&p->start_time);
 	p->real_start_time = p->start_time;
 	monotonic_to_bootbased(&p->real_start_time);
 	p->io_context = NULL;