sched: Move /proc/sched_debug to debugfs

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20210412102001.548833671@infradead.org

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index b25de7b..bf199d6 100644 (file)
--- 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)