linux-kernel - [PATCH v5 3.1.0-rc4-tip 7/26] Uprobes: uprobes arch info

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Message-Id: <20110920120117.25326.21378.sendpatchset@srdronam.in.ibm.com>
Date:	Tue, 20 Sep 2011 17:31:17 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Linux-mm <linux-mm@...ck.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Hugh Dickins <hughd@...gle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Jonathan Corbet <corbet@....net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Roland McGrath <roland@...k.frob.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v5 3.1.0-rc4-tip 7/26]   Uprobes: uprobes arch info


Introduce per uprobe arch info structure.
Used to store arch specific details. For example: details to handle
Rip relative instructions in X86_64.

Signed-off-by: Jim Keniston <jkenisto@...ibm.com>
Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
---
 include/linux/uprobes.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 074c4e9..2548b94 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -29,7 +29,7 @@ struct vm_area_struct;
 #ifdef CONFIG_ARCH_SUPPORTS_UPROBES
 #include <asm/uprobes.h>
 #else
-
+struct uprobe_arch_info {};
 #define MAX_UINSN_BYTES 4
 #endif
 
@@ -60,6 +60,7 @@ struct uprobe {
 	atomic_t		ref;
 	struct rw_semaphore	consumer_rwsem;
 	struct list_head	pending_list;
+	struct uprobe_arch_info arch_info;
 	struct uprobe_consumer	*consumers;
 	struct inode		*inode;		/* Also hold a ref to inode */
 	loff_t			offset;
--
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