From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/kernel/locking/spinlock_debug.c | 17 ++++++++---------
1 files changed, 8 insertions(+), 9 deletions(-)
diff --git a/kernel/kernel/locking/spinlock_debug.c b/kernel/kernel/locking/spinlock_debug.c
index d63df28..b9d9308 100644
--- a/kernel/kernel/locking/spinlock_debug.c
+++ b/kernel/kernel/locking/spinlock_debug.c
@@ -14,14 +14,14 @@
#include <linux/export.h>
void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name,
- struct lock_class_key *key)
+ struct lock_class_key *key, short inner)
{
#ifdef CONFIG_DEBUG_LOCK_ALLOC
/*
* Make sure we are not reinitializing a held lock:
*/
debug_check_no_locks_freed((void *)lock, sizeof(*lock));
- lockdep_init_map(&lock->dep_map, name, key, 0);
+ lockdep_init_map_wait(&lock->dep_map, name, key, 0, inner);
#endif
lock->raw_lock = (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED;
lock->magic = SPINLOCK_MAGIC;
@@ -31,7 +31,6 @@
EXPORT_SYMBOL(__raw_spin_lock_init);
-#ifndef CONFIG_PREEMPT_RT_FULL
void __rwlock_init(rwlock_t *lock, const char *name,
struct lock_class_key *key)
{
@@ -40,7 +39,7 @@
* Make sure we are not reinitializing a held lock:
*/
debug_check_no_locks_freed((void *)lock, sizeof(*lock));
- lockdep_init_map(&lock->dep_map, name, key, 0);
+ lockdep_init_map_wait(&lock->dep_map, name, key, 0, LD_WAIT_CONFIG);
#endif
lock->raw_lock = (arch_rwlock_t) __ARCH_RW_LOCK_UNLOCKED;
lock->magic = RWLOCK_MAGIC;
@@ -49,7 +48,6 @@
}
EXPORT_SYMBOL(__rwlock_init);
-#endif
static void spin_dump(raw_spinlock_t *lock, const char *msg)
{
@@ -113,6 +111,7 @@
{
debug_spin_lock_before(lock);
arch_spin_lock(&lock->raw_lock);
+ mmiowb_spin_lock();
debug_spin_lock_after(lock);
}
@@ -120,8 +119,10 @@
{
int ret = arch_spin_trylock(&lock->raw_lock);
- if (ret)
+ if (ret) {
+ mmiowb_spin_lock();
debug_spin_lock_after(lock);
+ }
#ifndef CONFIG_SMP
/*
* Must not happen on UP:
@@ -133,11 +134,11 @@
void do_raw_spin_unlock(raw_spinlock_t *lock)
{
+ mmiowb_spin_unlock();
debug_spin_unlock(lock);
arch_spin_unlock(&lock->raw_lock);
}
-#ifndef CONFIG_PREEMPT_RT_FULL
static void rwlock_bug(rwlock_t *lock, const char *msg)
{
if (!debug_locks_off())
@@ -227,5 +228,3 @@
debug_write_unlock(lock);
arch_write_unlock(&lock->raw_lock);
}
-
-#endif
--
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