linux-kernel - [tip: x86/cleanups] x86/oprofile: Avoid TIF

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Date:   Mon, 26 Oct 2020 12:52:36 -0000
From:   "tip-bot2 for Gabriel Krisman Bertazi" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Gabriel Krisman Bertazi <krisman@...labora.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/cleanups] x86/oprofile: Avoid TIF_IA32 when checking 64bit mode

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     47cd4dac1fb21759ffcfe0600827c87fa6acdfa7
Gitweb:        https://git.kernel.org/tip/47cd4dac1fb21759ffcfe0600827c87fa6acdfa7
Author:        Gabriel Krisman Bertazi <krisman@...labora.com>
AuthorDate:    Sat, 03 Oct 2020 23:25:29 -04:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 26 Oct 2020 13:46:46 +01:00

x86/oprofile: Avoid TIF_IA32 when checking 64bit mode

In preparation to remove TIF_IA32, stop using it in oprofile code. Use
user_64bit_mode() instead.

Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20201004032536.1229030-4-krisman@collabora.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 a2488b6..1d8391f 100644
--- a/arch/x86/oprofile/backtrace.c
+++ b/arch/x86/oprofile/backtrace.c
@@ -49,7 +49,7 @@ 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;