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authorAnil S Keshavamurthy <anil.s.keshavamurthy@intel.com>2006-01-09 20:52:45 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 08:01:40 -0800
commite597c2984c64609c6e1e1ac803f00f7550705860 (patch)
tree199bac97827782dcd73283018ec5692b63812fac
parentf709b122343fb9a010b6cf2d5559641f1820f7c9 (diff)
[PATCH] kprobes: arch_remove_kprobe
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>
-rw-r--r--arch/i386/kernel/kprobes.c4
-rw-r--r--arch/ia64/kernel/kprobes.c4
-rw-r--r--arch/powerpc/kernel/kprobes.c4
-rw-r--r--arch/sparc64/kernel/kprobes.c4
-rw-r--r--arch/x86_64/kernel/kprobes.c4
-rw-r--r--include/asm-i386/kprobes.h1
-rw-r--r--include/asm-ia64/kprobes.h1
-rw-r--r--include/asm-powerpc/kprobes.h1
-rw-r--r--include/asm-sparc64/kprobes.h1
-rw-r--r--include/asm-x86_64/kprobes.h1
-rw-r--r--include/linux/kprobes.h1
-rw-r--r--kernel/kprobes.c4
12 files changed, 12 insertions, 18 deletions
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index 68fe10250486..2f372dbd34fd 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -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();
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 89a70400c4f6..4de7f6759093 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -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
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 2cd32dd6898b..93444e32fccd 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -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)
diff --git a/arch/sparc64/kernel/kprobes.c b/arch/sparc64/kernel/kprobes.c
index bbd5aa6818ea..ff5e9d5cad50 100644
--- a/arch/sparc64/kernel/kprobes.c
+++ b/arch/sparc64/kernel/kprobes.c
@@ -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();
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index 128e18190f99..61a6a9369cbd 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -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)
diff --git a/include/asm-i386/kprobes.h b/include/asm-i386/kprobes.h
index f9e150fa1d44..dc559267ce3e 100644
--- a/include/asm-i386/kprobes.h
+++ b/include/asm-i386/kprobes.h
@@ -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);
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 12a0b93020da..698508f4a0cf 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -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;
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 42ece411435a..89dee13c2a4c 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -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 {
diff --git a/include/asm-sparc64/kprobes.h b/include/asm-sparc64/kprobes.h
index 1b47e0d2ee93..27fbdcba724b 100644
--- a/include/asm-sparc64/kprobes.h
+++ b/include/asm-sparc64/kprobes.h
@@ -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 {
diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h
index 9e2532adf42c..3a19ad179220 100644
--- a/include/asm-x86_64/kprobes.h
+++ b/include/asm-x86_64/kprobes.h
@@ -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);
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index ad6e4fe970fd..59bf240cdb9d 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -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);
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index f1c0e61a2cb4..19c42cbf91a0 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -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);
}
}