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time: Rename tsk->real_start_time to ->start_boottime

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Since it stores CLOCK_BOOTTIME, not, as the name suggests,
CLOCK_REALTIME, let's rename ->real_start_time to ->start_bootime.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2019-11-07 11:07:58 +01:00 committed by Ingo Molnar
parent 3bbc53f4ae
commit cf25e24db6
4 changed files with 4 additions and 4 deletions
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2
fs/exec.c
View file

@ -1132,7 +1132,7 @@ static int de_thread(struct task_struct *tsk)
* also take its birthdate (always earlier than our own).
*/
tsk->start_time = leader->start_time;
tsk->real_start_time = leader->real_start_time;
tsk->start_boottime = leader->start_boottime;
BUG_ON(!same_thread_group(leader, tsk));
BUG_ON(has_group_leader_pid(tsk));

2
fs/proc/array.c
View file

@ -533,7 +533,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
nice = task_nice(task);
/* convert nsec -> ticks */
start_time = nsec_to_clock_t(task->real_start_time);
start_time = nsec_to_clock_t(task->start_boottime);
seq_put_decimal_ull(m, "", pid_nr_ns(pid, ns));
seq_puts(m, " (");

2
include/linux/sched.h
View file

@ -857,7 +857,7 @@ struct task_struct {
u64 start_time;
/* Boot based time in nsecs: */
u64 real_start_time;
u64 start_boottime;
/* MM fault and swap info: this can arguably be seen as either mm-specific or thread-specific: */
unsigned long min_flt;

2
kernel/fork.c
View file

@ -2130,7 +2130,7 @@ static __latent_entropy struct task_struct *copy_process(
*/
p->start_time = ktime_get_ns();
p->real_start_time = ktime_get_boottime_ns();
p->start_boottime = ktime_get_boottime_ns();
/*
* Make it visible to the rest of the system, but dont wake it up yet.