linux-kernel - [patch 1/2] x86, ptrace: add bts

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Date:	Tue, 8 Jan 2008 11:49:52 +0100
From:	Markus Metzger <markus.t.metzger@...el.com>
To:	ak@...e.de, hpa@...or.com, linux-kernel@...r.kernel.org,
	mingo@...e.hu, tglx@...utronix.de
Cc:	markus.t.metzger@...el.com, markus.t.metzger@...il.com,
	suresh.b.siddha@...el.com, roland@...hat.com,
	akpm@...ux-foundation.org, mtk.manpages@...il.com
Subject: [patch 1/2] x86, ptrace: add bts_struct size to status command

Return the size of bts_struct in the PTRACE_BTS_STATUS command.
Change types to u32.


Signed-off-by: Markus Metzger <markus.t.metzger@...el.com>
---

Index: linux-2.6-x86/arch/x86/kernel/ptrace.c
===================================================================
--- linux-2.6-x86.orig/arch/x86/kernel/ptrace.c	2008-01-07 12:42:39.%N +0100
+++ linux-2.6-x86/arch/x86/kernel/ptrace.c	2008-01-08 11:18:35.%N +0100
@@ -787,6 +787,8 @@
 			cfg.flags |= PTRACE_BTS_O_SCHED;
 	}
 
+	cfg.bts_size = sizeof(struct bts_struct);
+
 	if (copy_to_user(ucfg, &cfg, sizeof(cfg)))
 		return -EFAULT;
 
Index: linux-2.6-x86/include/asm-x86/ptrace-abi.h
===================================================================
--- linux-2.6-x86.orig/include/asm-x86/ptrace-abi.h	2008-01-07 12:42:39.%N +0100
+++ linux-2.6-x86/include/asm-x86/ptrace-abi.h	2008-01-08 11:42:55.%N +0100
@@ -81,16 +81,21 @@
 #define PTRACE_SINGLEBLOCK	33	/* resume execution until next branch */
 
 #ifndef __ASSEMBLY__
+
+#include <asm/types.h>
+
 /* configuration/status structure used in PTRACE_BTS_CONFIG and
    PTRACE_BTS_STATUS commands.
 */
 struct ptrace_bts_config {
 	/* requested or actual size of BTS buffer in bytes */
-	unsigned int size;
+	u32 size;
 	/* bitmask of below flags */
-	unsigned int flags;
+	u32 flags;
 	/* buffer overflow signal */
-	unsigned int signal;
+	u32 signal;
+	/* actual size of bts_struct in bytes */
+	u32 bts_size;
 };
 #endif
 
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