linux-kernel - [PATCH 1/3] Make struct jprobe.entry a void *

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Message-Id: <78935473b1f70c863ab0be7d6cf4bcb04922b20b.1182822366.git.michael@ellerman.id.au>
Date:	Tue, 26 Jun 2007 11:48:50 +1000 (EST)
From:	Michael Ellerman <michael@...erman.id.au>
To:	<linux-kernel@...r.kernel.org>
Cc:	<linuxppc-dev@...abs.org>, <linux-ia64@...r.kernel.org>,
	<linux-arch@...r.kernel.org>, Andrew Morton <akpm@...l.org>,
	Christoph Hellwig <hch@....de>,
	<anil.s.keshavamurthy@...el.com>, <ananth@...ibm.com>
Subject: [PATCH 1/3] Make struct jprobe.entry a void *

Currently jprobe.entry is a kprobe_opcode_t *, but that's a lie. On some
platforms it doesn't point to an opcode at all, it points to a function
descriptor.

It's really a pointer to something that the arch code can turn into a
function entry point. And that's what actually happens, none of the
generic code ever looks at jprobe.entry, it's only ever dereferenced
by arch code.

So just make it a void *.

Signed-off-by: Michael Ellerman <michael@...erman.id.au>
---

It isn't obvious where kprobes patches should go, is anyone "the" maintainer?
Instead I've just sent this to everyone who'd touched the code lately, or
might be otherwise interested.

 include/linux/kprobes.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 23adf60..f4e53b7 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -116,7 +116,7 @@ struct kprobe {
  */
 struct jprobe {
 	struct kprobe kp;
-	kprobe_opcode_t *entry;	/* probe handling code to jump to */
+	void *entry;	/* probe handling code to jump to */
 };

 DECLARE_PER_CPU(struct kprobe *, current_kprobe);
-- 
1.5.1.3.g7a33b

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