[PATCH] kprobes: Allow multiple kprobes at the same address

Allow registration of multiple kprobes at an address in an architecture
agnostic way.  Corresponding handlers will be invoked in a sequence.  But,
a kprobe and a jprobe can't (yet) co-exist at the same address.

Signed-off-by: Ananth N Mavinakayanahalli <amavin@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index f20c163de4f5..99ddba5a4e00 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -43,6 +43,9 @@ typedef int (*kprobe_fault_handler_t) (struct kprobe *, struct pt_regs *,
 struct kprobe {
         struct hlist_node hlist;
 
+        /* list of kprobes for multi-handler support */
+        struct list_head list;
+
         /* location of the probe point */
         kprobe_opcode_t *addr;