sched,preempt: Move preempt_dynamic to debug.c

Move the #ifdef SCHED_DEBUG bits to kernel/sched/debug.c in order to
collect all the debugfs bits.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20210412102001.353833279@infradead.org

1 files changed, 3 insertions, 74 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index bac30db29d3f..e6c714b9b211 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5371,9 +5371,9 @@ enum {
 	preempt_dynamic_full,
 };
 
-static int preempt_dynamic_mode = preempt_dynamic_full;
+int preempt_dynamic_mode = preempt_dynamic_full;
 
-static int sched_dynamic_mode(const char *str)
+int sched_dynamic_mode(const char *str)
 {
 	if (!strcmp(str, "none"))
 		return preempt_dynamic_none;
@@ -5387,7 +5387,7 @@ static int sched_dynamic_mode(const char *str)
 	return -EINVAL;
 }
 
-static void sched_dynamic_update(int mode)
+void sched_dynamic_update(int mode)
 {
 	/*
 	 * Avoid {NONE,VOLUNTARY} -> FULL transitions from ever ending up in
@@ -5444,79 +5444,8 @@ static int __init setup_preempt_mode(char *str)
 }
 __setup("preempt=", setup_preempt_mode);
 
-#ifdef CONFIG_SCHED_DEBUG
-
-static ssize_t sched_dynamic_write(struct file *filp, const char __user *ubuf,
-				   size_t cnt, loff_t *ppos)
-{
-	char buf[16];
-	int mode;
-
-	if (cnt > 15)
-		cnt = 15;
-
-	if (copy_from_user(&buf, ubuf, cnt))
-		return -EFAULT;
-
-	buf[cnt] = 0;
-	mode = sched_dynamic_mode(strstrip(buf));
-	if (mode < 0)
-		return mode;
-
-	sched_dynamic_update(mode);
-
-	*ppos += cnt;
-
-	return cnt;
-}
-
-static int sched_dynamic_show(struct seq_file *m, void *v)
-{
-	static const char * preempt_modes[] = {
-		"none", "voluntary", "full"
-	};
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(preempt_modes); i++) {
-		if (preempt_dynamic_mode == i)
-			seq_puts(m, "(");
-		seq_puts(m, preempt_modes[i]);
-		if (preempt_dynamic_mode == i)
-			seq_puts(m, ")");
-
-		seq_puts(m, " ");
-	}
-
-	seq_puts(m, "\n");
-	return 0;
-}
-
-static int sched_dynamic_open(struct inode *inode, struct file *filp)
-{
-	return single_open(filp, sched_dynamic_show, NULL);
-}
-
-static const struct file_operations sched_dynamic_fops = {
-	.open		= sched_dynamic_open,
-	.write		= sched_dynamic_write,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-extern struct dentry *debugfs_sched;
-
-static __init int sched_init_debug_dynamic(void)
-{
-	debugfs_create_file("sched_preempt", 0644, debugfs_sched, NULL, &sched_dynamic_fops);
-	return 0;
-}
-late_initcall(sched_init_debug_dynamic);
-
-#endif /* CONFIG_SCHED_DEBUG */
 #endif /* CONFIG_PREEMPT_DYNAMIC */
 
-
 /*
  * This is the entry point to schedule() from kernel preemption
  * off of irq context.