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authorAl Viro <viro@zeniv.linux.org.uk>2017-05-14 21:38:26 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-05-21 13:14:59 -0400
commit76d9871e1122aabc086e7aade5251b1e5124cbb9 (patch)
treecd64ab676a9cd17ce88d3cbd82174a780f92f551 /kernel/exit.c
parentbb380ec33a7d8ee048e722889627869d21a5d527 (diff)
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wait_task_zombie: consolidate info logics
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c45
1 files changed, 16 insertions, 29 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index f01ebaab978a..97db9ee03f90 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1074,28 +1074,14 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
return 0;
if (unlikely(wo->wo_flags & WNOWAIT)) {
- int exit_code = p->exit_code;
-
+ status = p->exit_code;
get_task_struct(p);
read_unlock(&tasklist_lock);
sched_annotate_sleep();
if (wo->wo_rusage)
getrusage(p, RUSAGE_BOTH, wo->wo_rusage);
put_task_struct(p);
-
- infop = wo->wo_info;
- if (infop) {
- if ((exit_code & 0x7f) == 0) {
- infop->cause = CLD_EXITED;
- infop->status = exit_code >> 8;
- } else {
- infop->cause = (exit_code & 0x80) ? CLD_DUMPED : CLD_KILLED;
- infop->status = exit_code & 0x7f;
- }
- infop->pid = pid;
- infop->uid = uid;
- }
- return pid;
+ goto out_info;
}
/*
* Move the task's state to DEAD/TRACE, only one thread can do this.
@@ -1174,19 +1160,6 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
? p->signal->group_exit_code : p->exit_code;
wo->wo_stat = status;
- infop = wo->wo_info;
- if (infop) {
- if ((status & 0x7f) == 0) {
- infop->cause = CLD_EXITED;
- infop->status = status >> 8;
- } else {
- infop->cause = (status & 0x80) ? CLD_DUMPED : CLD_KILLED;
- infop->status = status & 0x7f;
- }
- infop->pid = pid;
- infop->uid = uid;
- }
-
if (state == EXIT_TRACE) {
write_lock_irq(&tasklist_lock);
/* We dropped tasklist, ptracer could die and untrace */
@@ -1202,6 +1175,20 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
if (state == EXIT_DEAD)
release_task(p);
+out_info:
+ infop = wo->wo_info;
+ if (infop) {
+ if ((status & 0x7f) == 0) {
+ infop->cause = CLD_EXITED;
+ infop->status = status >> 8;
+ } else {
+ infop->cause = (status & 0x80) ? CLD_DUMPED : CLD_KILLED;
+ infop->status = status & 0x7f;
+ }
+ infop->pid = pid;
+ infop->uid = uid;
+ }
+
return pid;
}