diff options
| author | Ananth N Mavinakayanahalli <ananth@in.ibm.com> | 2005-06-27 15:17:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-27 15:23:52 -0700 |
| commit | 9ec4b1f356b3bad928ae8e2aa9caebfa737d52df (patch) | |
| tree | 24d27ffed66595a9d864448ec53200ca1745f62c /include | |
| parent | d3b8a1a8496c83bc4a3cc76505c29255af15572c (diff) | |
[PATCH] kprobes: fix single-step out of line - take2
Now that PPC64 has no-execute support, here is a second try to fix the
single step out of line during kprobe execution. Kprobes on x86_64 already
solved this problem by allocating an executable page and using it as the
scratch area for stepping out of line. Reuse that.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ia64/kprobes.h | 1 | ||||
| -rw-r--r-- | include/asm-ppc64/kprobes.h | 2 | ||||
| -rw-r--r-- | include/linux/kprobes.h | 2 |
3 files changed, 4 insertions, 1 deletions
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h index 7b700035e36..25d8b1edfcb 100644 --- a/include/asm-ia64/kprobes.h +++ b/include/asm-ia64/kprobes.h @@ -28,6 +28,7 @@ #include <linux/ptrace.h> #include <asm/break.h> +#define MAX_INSN_SIZE 16 #define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) typedef union cmp_inst { diff --git a/include/asm-ppc64/kprobes.h b/include/asm-ppc64/kprobes.h index 19b468bed05..790cf7c5277 100644 --- a/include/asm-ppc64/kprobes.h +++ b/include/asm-ppc64/kprobes.h @@ -45,7 +45,7 @@ typedef unsigned int kprobe_opcode_t; /* Architecture specific copy of original instruction */ struct arch_specific_insn { /* copy of original instruction */ - kprobe_opcode_t insn[MAX_INSN_SIZE]; + kprobe_opcode_t *insn; }; #ifdef CONFIG_KPROBES diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 5e1a7b0d7b3..d304d457985 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -177,6 +177,8 @@ 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 void show_registers(struct pt_regs *regs); +extern kprobe_opcode_t *get_insn_slot(void); +extern void free_insn_slot(kprobe_opcode_t *slot); /* Get the kprobe at this addr (if any). Must have called lock_kprobes */ struct kprobe *get_kprobe(void *addr); |