lkml.org 
[lkml]   [2020]   [Apr]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] kthread: set kthread state to TASK_IDLE.
Date
From: liyueyi <liyueyi@xiaomi.com>

Currently kthread() sleeps in TASK_UNINTERRUPTIBLE state waiting
for the first wakeup, it may be detected by DETECT_HUNG_TASK if
the first wakeup is coming later. Since kernel has introduced
TASK_IDLE, change kthread state to TASK_IDLE.

Signed-off-by: liyueyi <liyueyi@xiaomi.com>
---
kernel/kthread.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/kthread.c b/kernel/kthread.c
index b262f470..f841419 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -243,7 +243,7 @@ static int kthread(void *_create)
current->vfork_done = &self->exited;

/* OK, tell user we're spawned, wait for stop or wakeup */
- __set_current_state(TASK_UNINTERRUPTIBLE);
+ __set_current_state(TASK_IDLE);
create->result = current;
complete(done);
schedule();
@@ -415,7 +415,7 @@ static void __kthread_bind(struct task_struct *p, unsigned int cpu, long state)

void kthread_bind_mask(struct task_struct *p, const struct cpumask *mask)
{
- __kthread_bind_mask(p, mask, TASK_UNINTERRUPTIBLE);
+ __kthread_bind_mask(p, mask, TASK_IDLE);
}

/**
@@ -429,7 +429,7 @@ void kthread_bind_mask(struct task_struct *p, const struct cpumask *mask)
*/
void kthread_bind(struct task_struct *p, unsigned int cpu)
{
- __kthread_bind(p, cpu, TASK_UNINTERRUPTIBLE);
+ __kthread_bind(p, cpu, TASK_IDLE);
}
EXPORT_SYMBOL(kthread_bind);

--
2.7.4
\
 
 \ /
  Last update: 2020-04-01 08:53    [W:0.046 / U:0.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site