From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值
---
kernel/kernel/kthread.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/kernel/kernel/kthread.c b/kernel/kernel/kthread.c
index 49dad4f..9d736f5 100644
--- a/kernel/kernel/kthread.c
+++ b/kernel/kernel/kthread.c
@@ -264,7 +264,6 @@
static int kthread(void *_create)
{
- static const struct sched_param param = { .sched_priority = 0 };
/* Copy data: it's on kthread's stack */
struct kthread_create_info *create = _create;
int (*threadfn)(void *data) = create->threadfn;
@@ -294,13 +293,6 @@
init_completion(&self->exited);
init_completion(&self->parked);
current->vfork_done = &self->exited;
-
- /*
- * The new thread inherited kthreadd's priority and CPU mask. Reset
- * back to default in case they have been changed.
- */
- sched_setscheduler_nocheck(current, SCHED_NORMAL, ¶m);
- set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_KTHREAD));
/* OK, tell user we're spawned, wait for stop or wakeup */
__set_current_state(TASK_UNINTERRUPTIBLE);
@@ -399,6 +391,7 @@
}
task = create->result;
if (!IS_ERR(task)) {
+ static const struct sched_param param = { .sched_priority = 0 };
char name[TASK_COMM_LEN];
/*
@@ -407,6 +400,13 @@
*/
vsnprintf(name, sizeof(name), namefmt, args);
set_task_comm(task, name);
+ /*
+ * root may have changed our (kthreadd's) priority or CPU mask.
+ * The kernel thread should not inherit these properties.
+ */
+ sched_setscheduler_nocheck(task, SCHED_NORMAL, ¶m);
+ set_cpus_allowed_ptr(task,
+ housekeeping_cpumask(HK_FLAG_KTHREAD));
}
kfree(create);
return task;
--
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