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authorIngo Molnar <mingo@elte.hu>2006-03-23 03:00:35 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 07:38:12 -0800
commit7a7d1cf95408863a657035701606b13644c9f55e (patch)
tree7eaee4f3221aabcac2f57fb0295dd1e4763a1e8c
parent2c68ee754c40099c59828e59618a54726f76126a (diff)
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[PATCH] sem2mutex: kprobes
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/kernel/kprobes.c4
-rw-r--r--arch/powerpc/kernel/kprobes.c4
-rw-r--r--arch/x86_64/kernel/kprobes.c4
-rw-r--r--include/linux/kprobes.h3
-rw-r--r--kernel/kprobes.c14
5 files changed, 15 insertions, 14 deletions
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index 694a1399763..7a59050242a 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -84,9 +84,9 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- down(&kprobe_mutex);
+ mutex_lock(&kprobe_mutex);
free_insn_slot(p->ainsn.insn);
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 258039fb301..cb1fe5878e8 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -81,9 +81,9 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- down(&kprobe_mutex);
+ mutex_lock(&kprobe_mutex);
free_insn_slot(p->ainsn.insn);
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
}
static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index 8b866a8572c..14f0ced613b 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -222,9 +222,9 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- down(&kprobe_mutex);
+ mutex_lock(&kprobe_mutex);
free_insn_slot(p->ainsn.insn);
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 669756bc20a..778adc0fa64 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -36,6 +36,7 @@
#include <linux/percpu.h>
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
+#include <linux/mutex.h>
#ifdef CONFIG_KPROBES
#include <asm/kprobes.h>
@@ -152,7 +153,7 @@ struct kretprobe_instance {
};
extern spinlock_t kretprobe_lock;
-extern struct semaphore kprobe_mutex;
+extern struct mutex kprobe_mutex;
extern int arch_prepare_kprobe(struct kprobe *p);
extern void arch_arm_kprobe(struct kprobe *p);
extern void arch_disarm_kprobe(struct kprobe *p);
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index fef1af8a73c..1fb9f753ef6 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -48,7 +48,7 @@
static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE];
static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];
-DECLARE_MUTEX(kprobe_mutex); /* Protects kprobe_table */
+DEFINE_MUTEX(kprobe_mutex); /* Protects kprobe_table */
DEFINE_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */
static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL;
@@ -460,7 +460,7 @@ static int __kprobes __register_kprobe(struct kprobe *p,
}
p->nmissed = 0;
- down(&kprobe_mutex);
+ mutex_lock(&kprobe_mutex);
old_p = get_kprobe(p->addr);
if (old_p) {
ret = register_aggr_kprobe(old_p, p);
@@ -477,7 +477,7 @@ static int __kprobes __register_kprobe(struct kprobe *p,
arch_arm_kprobe(p);
out:
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
if (ret && probed_mod)
module_put(probed_mod);
@@ -496,10 +496,10 @@ void __kprobes unregister_kprobe(struct kprobe *p)
struct kprobe *old_p, *list_p;
int cleanup_p;
- down(&kprobe_mutex);
+ mutex_lock(&kprobe_mutex);
old_p = get_kprobe(p->addr);
if (unlikely(!old_p)) {
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
return;
}
if (p != old_p) {
@@ -507,7 +507,7 @@ void __kprobes unregister_kprobe(struct kprobe *p)
if (list_p == p)
/* kprobe p is a valid probe */
goto valid_p;
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
return;
}
valid_p:
@@ -523,7 +523,7 @@ valid_p:
cleanup_p = 0;
}
- up(&kprobe_mutex);
+ mutex_unlock(&kprobe_mutex);
synchronize_sched();
if (p->mod_refcounted &&