linux-kernel - [tip:sched/core] sched/x86: Remove unnecessary TBM3 check to update topology

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Date:   Thu, 19 Jan 2017 01:11:18 -0800
From:   tip-bot for Tim Chen <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     efault@....de, tim.c.chen@...ux.intel.com, mingo@...nel.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        torvalds@...ux-foundation.org, tglx@...utronix.de, hpa@...or.com,
        srinivas.pandruvada@...ux.intel.com
Subject: [tip:sched/core] sched/x86: Remove unnecessary TBM3 check to update
 topology

Commit-ID:  02cfdc95a0104fa5812d855d1e4ec687312aaa6f
Gitweb:     http://git.kernel.org/tip/02cfdc95a0104fa5812d855d1e4ec687312aaa6f
Author:     Tim Chen <tim.c.chen@...ux.intel.com>
AuthorDate: Wed, 18 Jan 2017 14:30:29 -0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 19 Jan 2017 08:42:37 +0100

sched/x86: Remove unnecessary TBM3 check to update topology

Scheduling to the max performance core is enabled by
default for Turbo Boost Maxt Technology 3.0 capable platforms.

Remove the useless sysctl_sched_itmt_enabled check to
update sched topology for adding the prioritized core scheduling
flag.

Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Mike Galbraith <efault@....de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: bp@...e.de
Cc: jolsa@...hat.com
Cc: linux-acpi@...r.kernel.org
Cc: linux-pm@...r.kernel.org
Cc: rjw@...ysocki.net
Link: http://lkml.kernel.org/r/1484778629-4404-1-git-send-email-tim.c.chen@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/itmt.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c
index cb9c1ed..f73f475 100644
--- a/arch/x86/kernel/itmt.c
+++ b/arch/x86/kernel/itmt.c
@@ -132,10 +132,8 @@ int sched_set_itmt_support(void)
 
 	sysctl_sched_itmt_enabled = 1;
 
-	if (sysctl_sched_itmt_enabled) {
-		x86_topology_update = true;
-		rebuild_sched_domains();
-	}
+	x86_topology_update = true;
+	rebuild_sched_domains();
 
 	mutex_unlock(&itmt_update_mutex);