Copy old kprobe to newly alloced optimized_kprobe before
arch_prepare_optimized_kprobe(). Original kprove can brings more
information to optimizer.
v1 -> v2:
- Bugfix: copy p->addr when alloc_aggr_kprobe.
Signed-off-by: Wang Nan <wangn...@huawei.com>
---
kernel/kprobes.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3995f54..e9868ec 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -730,7 +730,13 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
return NULL;
INIT_LIST_HEAD(&op->list);
+
+ /*
+ * copy gives arch_prepare_optimized_kprobe
+ * more information
+ */
op->kp.addr = p->addr;
+ copy_kprobe(p, &op->kp);
arch_prepare_optimized_kprobe(op);
return &op->kp;
--
1.8.4
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