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[PATCH] kprobes: arch_remove_kprobe

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Currently arch_remove_kprobes() is only implemented/required for x86_64 and
powerpc.  All other architecture like IA64, i386 and sparc64 implementes a
dummy function which is being called from arch independent kprobes.c file.

This patch removes the dummy functions and replaces it with
#define arch_remove_kprobe(p, s)	do { } while(0)

Signed-off-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>
This commit is contained in:
Anil S Keshavamurthy 2006-01-09 20:52:45 -08:00 committed by Linus Torvalds
parent f709b12234
commit e597c2984c
12 changed files with 12 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/i386/kernel/kprobes.c
View file

@ -77,10 +77,6 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
{
kcb->prev_kprobe.kp = kprobe_running();

4
arch/ia64/kernel/kprobes.c
View file

@ -467,10 +467,6 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
}
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
}
/*
* We are resuming execution after a single step fault, so the pt_regs
* structure reflects the register state after we executed the instruction

4
arch/powerpc/kernel/kprobes.c
View file

@ -80,9 +80,11 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
void __kprobes arch_remove_kprobe(struct kprobe *p)
void __kprobes arch_remove_kprobe(struct kprobe *p, struct semaphore *s)
{
down(s);
free_insn_slot(p->ainsn.insn);
up(s);
}
static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)

4
arch/sparc64/kernel/kprobes.c
View file

@ -61,10 +61,6 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
flushi(p->addr);
}
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
{
kcb->prev_kprobe.kp = kprobe_running();

4
arch/x86_64/kernel/kprobes.c
View file

@ -220,9 +220,11 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
void __kprobes arch_remove_kprobe(struct kprobe *p)
void __kprobes arch_remove_kprobe(struct kprobe *p, struct semaphore *s)
{
down(s);
free_insn_slot(p->ainsn.insn);
up(s);
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)

1
include/asm-i386/kprobes.h
View file

@ -40,6 +40,7 @@ typedef u8 kprobe_opcode_t;
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define ARCH_SUPPORTS_KRETPROBES
#define arch_remove_kprobe(p, s) do { } while(0)
void kretprobe_trampoline(void);

1
include/asm-ia64/kprobes.h
View file

@ -89,6 +89,7 @@ struct kprobe_ctlblk {
#define IP_RELATIVE_PREDICT_OPCODE (7)
#define LONG_BRANCH_OPCODE (0xC)
#define LONG_CALL_OPCODE (0xD)
#define arch_remove_kprobe(p, s) do { } while(0)
typedef struct kprobe_opcode {
bundle_t bundle;

1
include/asm-powerpc/kprobes.h
View file

@ -50,6 +50,7 @@ typedef unsigned int kprobe_opcode_t;
#define ARCH_SUPPORTS_KRETPROBES
void kretprobe_trampoline(void);
extern void arch_remove_kprobe(struct kprobe *p, struct semaphore *s);
/* Architecture specific copy of original instruction */
struct arch_specific_insn {

1
include/asm-sparc64/kprobes.h
View file

@ -12,6 +12,7 @@ typedef u32 kprobe_opcode_t;
#define MAX_INSN_SIZE 2
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define arch_remove_kprobe(p, s) do { } while(0)
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {

1
include/asm-x86_64/kprobes.h
View file

@ -78,6 +78,7 @@ static inline void restore_interrupts(struct pt_regs *regs)
local_irq_enable();
}
extern void arch_remove_kprobe(struct kprobe *p, struct semaphore *s);
extern int post_kprobe_handler(struct pt_regs *regs);
extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
extern int kprobe_handler(struct pt_regs *regs);

1
include/linux/kprobes.h
View file

@ -152,7 +152,6 @@ extern spinlock_t kretprobe_lock;
extern int arch_prepare_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);

4
kernel/kprobes.c
View file

@ -532,9 +532,7 @@ valid_p:
list_del_rcu(&p->list);
kfree(old_p);
}
down(&kprobe_mutex);
arch_remove_kprobe(p);
up(&kprobe_mutex);
arch_remove_kprobe(p, &kprobe_mutex);
}
}