[PATCH] lockdep: make class_filter() inline and remove unnecessary macros

From: Wenchao Hao
Date: Thu Jun 06 2024 - 05:03:57 EST


This is just a clean code which simplify the code implement and make it
easy to understand. No logic changed from origin implement.

Make class_filter() inline which just return 0, and directly called from
verbose(), very_verbose(), HARDIRQ_verbose() and SOFTIRQ_verbose() without
macro control, remove unnecessary macros VERY_VERBOSE, HARDIRQ_VERBOSE
and SOFTIRQ_VERBOSE.

Signed-off-by: Wenchao Hao <haowenchao22@xxxxxxxxx>
---
kernel/locking/lockdep.c | 25 +------------------------
1 file changed, 1 insertion(+), 24 deletions(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 151bd3de5936..cd8356106da2 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -478,21 +478,11 @@ void lockdep_set_selftest_task(struct task_struct *task)
*/

#define VERBOSE 0
-#define VERY_VERBOSE 0

-#if VERBOSE
-# define HARDIRQ_VERBOSE 1
-# define SOFTIRQ_VERBOSE 1
-#else
-# define HARDIRQ_VERBOSE 0
-# define SOFTIRQ_VERBOSE 0
-#endif
-
-#if VERBOSE || HARDIRQ_VERBOSE || SOFTIRQ_VERBOSE
/*
* Quick filtering for interesting events:
*/
-static int class_filter(struct lock_class *class)
+static inline int class_filter(struct lock_class *class)
{
#if 0
/* Example */
@@ -506,14 +496,10 @@ static int class_filter(struct lock_class *class)
/* Filter everything else. 1 would be to allow everything else */
return 0;
}
-#endif

static int verbose(struct lock_class *class)
{
-#if VERBOSE
return class_filter(class);
-#endif
- return 0;
}

static void print_lockdep_off(const char *bug_msg)
@@ -809,10 +795,7 @@ static void print_kernel_ident(void)

static int very_verbose(struct lock_class *class)
{
-#if VERY_VERBOSE
return class_filter(class);
-#endif
- return 0;
}

/*
@@ -4171,18 +4154,12 @@ void print_irqtrace_events(struct task_struct *curr)

static int HARDIRQ_verbose(struct lock_class *class)
{
-#if HARDIRQ_VERBOSE
return class_filter(class);
-#endif
- return 0;
}

static int SOFTIRQ_verbose(struct lock_class *class)
{
-#if SOFTIRQ_VERBOSE
return class_filter(class);
-#endif
- return 0;
}

static int (*state_verbose_f[])(struct lock_class *class) = {
--
2.38.1