diff options
| -rw-r--r-- | arch/ia64/kernel/kprobes.c | 12 | ||||
| -rw-r--r-- | include/asm-ia64/kprobes.h | 4 |
2 files changed, 11 insertions, 5 deletions
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c index 4f5fd0960ba..72e593e9405 100644 --- a/arch/ia64/kernel/kprobes.c +++ b/arch/ia64/kernel/kprobes.c @@ -370,14 +370,18 @@ static int __kprobes valid_kprobe_addr(int template, int slot, static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb) { - kcb->prev_kprobe.kp = kprobe_running(); - kcb->prev_kprobe.status = kcb->kprobe_status; + unsigned int i; + i = atomic_add_return(1, &kcb->prev_kprobe_index); + kcb->prev_kprobe[i-1].kp = kprobe_running(); + kcb->prev_kprobe[i-1].status = kcb->kprobe_status; } static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb) { - __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp; - kcb->kprobe_status = kcb->prev_kprobe.status; + unsigned int i; + i = atomic_sub_return(1, &kcb->prev_kprobe_index); + __get_cpu_var(current_kprobe) = kcb->prev_kprobe[i].kp; + kcb->kprobe_status = kcb->prev_kprobe[i].status; } static void __kprobes set_current_kprobe(struct kprobe *p, diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h index 828ae00e47c..2abc98b336f 100644 --- a/include/asm-ia64/kprobes.h +++ b/include/asm-ia64/kprobes.h @@ -71,13 +71,15 @@ struct prev_kprobe { #define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f) /* per-cpu kprobe control block */ +#define ARCH_PREV_KPROBE_SZ 2 struct kprobe_ctlblk { unsigned long kprobe_status; struct pt_regs jprobe_saved_regs; unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE]; unsigned long *bsp; unsigned long cfm; - struct prev_kprobe prev_kprobe; + atomic_t prev_kprobe_index; + struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ]; }; #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry |