#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/smp.h>
+#include <linux/percpu.h>
+#include <linux/spinlock.h>
+#include <linux/rcupdate.h>
+#ifdef CONFIG_KPROBES
#include <asm/kprobes.h>
/* kprobe_status settings */
/* list of kprobes for multi-handler support */
struct list_head list;
+ /* Indicates that the corresponding module has been ref counted */
+ unsigned int mod_refcounted;
+
/*count the number of times this probe was temporarily disarmed */
unsigned long nmissed;
kprobe_opcode_t *entry; /* probe handling code to jump to */
};
+DECLARE_PER_CPU(struct kprobe *, current_kprobe);
+DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
#ifdef ARCH_SUPPORTS_KRETPROBES
extern void arch_prepare_kretprobe(struct kretprobe *rp, struct pt_regs *regs);
#else /* ARCH_SUPPORTS_KRETPROBES */
struct task_struct *task;
};
-#ifdef CONFIG_KPROBES
-/* Locks kprobe: irq must be disabled */
-void lock_kprobes(void);
-void unlock_kprobes(void);
-
-/* kprobe running now on this CPU? */
-static inline int kprobe_running(void)
-{
- extern unsigned int kprobe_cpu;
- return kprobe_cpu == smp_processor_id();
-}
-
+extern spinlock_t kretprobe_lock;
+extern struct semaphore kprobe_mutex;
extern int arch_prepare_kprobe(struct kprobe *p);
-extern void arch_copy_kprobe(struct kprobe *p);
extern void arch_arm_kprobe(struct kprobe *p);
extern void arch_disarm_kprobe(struct kprobe *p);
-extern void arch_remove_kprobe(struct kprobe *p);
extern int arch_init_kprobes(void);
extern void show_registers(struct pt_regs *regs);
extern kprobe_opcode_t *get_insn_slot(void);
extern void free_insn_slot(kprobe_opcode_t *slot);
+extern void kprobes_inc_nmissed_count(struct kprobe *p);
-/* Get the kprobe at this addr (if any). Must have called lock_kprobes */
+/* Get the kprobe at this addr (if any) - called with preemption disabled */
struct kprobe *get_kprobe(void *addr);
struct hlist_head * kretprobe_inst_table_head(struct task_struct *tsk);
+/* kprobe_running() will just return the current_kprobe on this CPU */
+static inline struct kprobe *kprobe_running(void)
+{
+ return (__get_cpu_var(current_kprobe));
+}
+
+static inline void reset_current_kprobe(void)
+{
+ __get_cpu_var(current_kprobe) = NULL;
+}
+
+static inline struct kprobe_ctlblk *get_kprobe_ctlblk(void)
+{
+ return (&__get_cpu_var(kprobe_ctlblk));
+}
+
int register_kprobe(struct kprobe *p);
void unregister_kprobe(struct kprobe *p);
int setjmp_pre_handler(struct kprobe *, struct pt_regs *);
void kprobe_flush_task(struct task_struct *tk);
void recycle_rp_inst(struct kretprobe_instance *ri);
#else /* CONFIG_KPROBES */
-static inline int kprobe_running(void)
+
+#define __kprobes /**/
+struct jprobe;
+struct kretprobe;
+
+static inline struct kprobe *kprobe_running(void)
{
- return 0;
+ return NULL;
}
static inline int register_kprobe(struct kprobe *p)
{