From: Markus Metzger <markus.t.metzger@intel.com>
Date: Fri, 3 Apr 2009 14:43:49 +0000 (+0200)
Subject: x86, ds: dont use TIF_DEBUGCTLMSR
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6047550d3d26fed88b18a208b31f8b90b5ef3e9b;p=linux-beck.git

x86, ds: dont use TIF_DEBUGCTLMSR

Debug store already uses TIF_DS_AREA_MSR to trigger debug store context
switch handling. No need to use TIF_DEBUGCTLMSR, as well.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Cc: roland@redhat.com
Cc: eranian@googlemail.com
Cc: oleg@redhat.com
Cc: juan.villacis@intel.com
Cc: ak@linux.jf.intel.com
LKML-Reference: <20090403144604.256645000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 443f415441da..cab28320dac7 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -925,11 +925,6 @@ static void update_task_debugctlmsr(struct task_struct *task,
 	get_cpu();
 	if (task == current)
 		update_debugctlmsr(debugctlmsr);
-
-	if (task->thread.debugctlmsr)
-		set_tsk_thread_flag(task, TIF_DEBUGCTLMSR);
-	else
-		clear_tsk_thread_flag(task, TIF_DEBUGCTLMSR);
 	put_cpu();
 }