[tip: sched/core] sched: Move /proc/sched_debug to debugfs

[tip-bot2 for Peter Zijlstra]

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     d27e9ae2f244805bbdc730d85fba28685d2471e5
Gitweb:        https://git.kernel.org/tip/d27e9ae2f244805bbdc730d85fba28685d2471e5
Author:        Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate:    Thu, 25 Mar 2021 15:18:19 +01:00
Committer:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Fri, 16 Apr 2021 17:06:35 +02:00

sched: Move /proc/sched_debug to debugfs

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Tested-by: Valentin Schneider <valentin.schneider@xxxxxxx>
Link: https://lkml.kernel.org/r/20210412102001.548833671@xxxxxxxxxxxxx
---
 kernel/sched/debug.c | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index b25de7b..bf199d6 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -277,6 +277,20 @@ static const struct file_operations sched_dynamic_fops = {
 
 __read_mostly bool sched_debug_enabled;
 
+static const struct seq_operations sched_debug_sops;
+
+static int sched_debug_open(struct inode *inode, struct file *filp)
+{
+	return seq_open(filp, &sched_debug_sops);
+}
+
+static const struct file_operations sched_debug_fops = {
+	.open		= sched_debug_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
 static struct dentry *debugfs_sched;
 
 static __init int sched_init_debug(void)
@@ -314,6 +328,8 @@ static __init int sched_init_debug(void)
 	debugfs_create_u32("scan_size_mb", 0644, numa, &sysctl_numa_balancing_scan_size);
 #endif
 
+	debugfs_create_file("debug", 0444, debugfs_sched, NULL, &sched_debug_fops);
+
 	return 0;
 }
 late_initcall(sched_init_debug);
@@ -847,15 +863,6 @@ static const struct seq_operations sched_debug_sops = {
 	.show		= sched_debug_show,
 };
 
-static int __init init_sched_debug_procfs(void)
-{
-	if (!proc_create_seq("sched_debug", 0444, NULL, &sched_debug_sops))
-		return -ENOMEM;
-	return 0;
-}
-
-__initcall(init_sched_debug_procfs);
-
 #define __PS(S, F) SEQ_printf(m, "%-45s:%21Ld\n", S, (long long)(F))
 #define __P(F) __PS(#F, F)
 #define   P(F) __PS(#F, p->F)