Commit 7a7d1cf9 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

[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: default avatarIngo Molnar <mingo@elte.hu>
Acked-by: default avatarAnil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2c68ee75
......@@ -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)
......
......@@ -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)
......
......@@ -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)
......
......@@ -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);
......
......@@ -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 &&
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment