linux-kernel - [PATCH v7 3.2-rc2 16/30] uprobes: Introduce uprobe_task_arch

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Message-Id: <20111118110944.10512.1822.sendpatchset@srdronam.in.ibm.com>
Date:	Fri, 18 Nov 2011 16:39:44 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-mm <linux-mm@...ck.org>, Ingo Molnar <mingo@...e.hu>,
	Andi Kleen <andi@...stfloor.org>,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Roland McGrath <roland@...k.frob.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Anton Arapov <anton@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Stephen Wilson <wilsons@...rt.ca>
Subject: [PATCH v7 3.2-rc2 16/30] uprobes: Introduce uprobe_task_arch_info structure.


uprobe_task_arch_info structure helps save and restore architecture
specific artifacts at the probehit/singlestep/original instruction
restore time.

Signed-off-by: Jim Keniston <jkenisto@...ibm.com>
Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
---
 include/linux/uprobes.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 0882223..c1378a9 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -31,6 +31,7 @@ struct vm_area_struct;
 #else
 typedef u8 uprobe_opcode_t;
 struct uprobe_arch_info {};
+struct uprobe_task_arch_info {};	/* arch specific task info */
 #define MAX_UINSN_BYTES 4
 #endif
 
@@ -84,6 +85,7 @@ struct uprobe_task {
 	unsigned long vaddr;
 
 	enum uprobe_task_state state;
+	struct uprobe_task_arch_info tskinfo;
 
 	struct uprobe *active_uprobe;
 };

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