From: Dmitry Safonov <dsafonov@virtuozzo.com>
To: <linux-kernel@vger.kernel.org>
CC: <luto@amacapital.net>, <tglx@linutronix.de>, <mingo@redhat.com>,
        <hpa@zytor.com>, <x86@kernel.org>, <rric@kernel.org>,
        <oprofile-list@lists.sf.net>, <0x7f454c46@gmail.com>,
        Dmitry Safonov <dsafonov@virtuozzo.com>
Subject: [PATCH 4/4] x86/oprofile: down with test_thread_flag(TIF_IA32)
Date: Thu, 14 Apr 2016 21:10:14 +0300
Message-ID: <1460657414-12530-5-git-send-email-dsafonov@virtuozzo.com>
In-Reply-To: <1460657414-12530-1-git-send-email-dsafonov@virtuozzo.com>
References: <1460657414-12530-1-git-send-email-dsafonov@virtuozzo.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:23
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Apr 2016 18:11:30.4847 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0801MB1308
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 709
Lines: 23

As we have here full register set - just use user_64bit_mode
on it.

Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
---
 arch/x86/oprofile/backtrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c
index cb31a4440e58..405dadaee74a 100644
--- a/arch/x86/oprofile/backtrace.c
+++ b/arch/x86/oprofile/backtrace.c
@@ -69,7 +69,7 @@ x86_backtrace_32(struct pt_regs * const regs, unsigned int depth)
 	struct stack_frame_ia32 *head;
 
 	/* User process is IA32 */
-	if (!current || !test_thread_flag(TIF_IA32))
+	if (!current || user_64bit_mode(regs))
 		return 0;
 
 	head = (struct stack_frame_ia32 *) regs->bp;
-- 
2.8.0