Commit 44511ab3 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman Committed by Thomas Gleixner
Browse files

time/debug: Remove dentry pointer for debugfs 



There is no need to keep the dentry pointer around for the created
debugfs file, as it is only needed when removing it from the system.
When it is to be removed, ask debugfs itself for the pointer, to save on
storage and make things a bit simpler.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210216155020.1012407-1-gregkh@linuxfoundation.org
parent 1e28eed1

kernel/time/test_udelay.c

+3 −4
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
#define DEBUGFS_FILENAME "udelay_test"



static DEFINE_MUTEX(udelay_test_lock);

static struct dentry *udelay_test_debugfs_file;

static int udelay_test_usecs;

static int udelay_test_iterations = DEFAULT_ITERATIONS;
@@ -138,8 +137,8 @@ static const struct file_operations udelay_test_debugfs_ops = { 
static int __init udelay_test_init(void)

{

	mutex_lock(&udelay_test_lock);

	udelay_test_debugfs_file = debugfs_create_file(DEBUGFS_FILENAME,

			S_IRUSR, NULL, NULL, &udelay_test_debugfs_ops);

	debugfs_create_file(DEBUGFS_FILENAME, S_IRUSR, NULL, NULL,

			    &udelay_test_debugfs_ops);

	mutex_unlock(&udelay_test_lock);



	return 0;
@@ -150,7 +149,7 @@ module_init(udelay_test_init); 
static void __exit udelay_test_exit(void)

{

	mutex_lock(&udelay_test_lock);

	debugfs_remove(udelay_test_debugfs_file);

	debugfs_remove(debugfs_lookup(DEBUGFS_FILENAME, NULL));

	mutex_unlock(&udelay_test_lock);

}