linux-kernel - [GIT PULL] x86/timers update for v4.6

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Message-ID: <20160314133359.GA12282@gmail.com>
Date:	Mon, 14 Mar 2016 14:33:59 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/timers update for v4.6

Linus,

Please pull the latest x86-timers-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-timers-for-linus

   # HEAD: c25323c07345a843a56a294047b130dfd9250fad x86/tsc: Use topology functions

A single simplification of the x86 TSC code.

 Thanks,

	Ingo

------------------>
Thomas Gleixner (1):
      x86/tsc: Use topology functions


 arch/x86/kernel/tsc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 3d743da828d3..5a6cb4684e0f 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -1246,14 +1246,14 @@ void __init tsc_init(void)
  */
 unsigned long calibrate_delay_is_known(void)
 {
-	int i, cpu = smp_processor_id();
+	int sibling, cpu = smp_processor_id();
 
 	if (!tsc_disabled && !cpu_has(&cpu_data(cpu), X86_FEATURE_CONSTANT_TSC))
 		return 0;
 
-	for_each_online_cpu(i)
-		if (cpu_data(i).phys_proc_id == cpu_data(cpu).phys_proc_id)
-			return cpu_data(i).loops_per_jiffy;
+	sibling = cpumask_any_but(topology_core_cpumask(cpu), cpu);
+	if (sibling < nr_cpu_ids)
+		return cpu_data(sibling).loops_per_jiffy;
 	return 0;
 }
 #endif