linux-kernel - [RFC 6/6] ARM: sched: clear SD_SHARE

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Date:	Sun,  7 Oct 2012 09:43:58 +0200
From:	Vincent Guittot <vincent.guittot@...aro.org>
To:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linaro-dev@...ts.linaro.org, peterz@...radead.org,
	mingo@...hat.com, pjt@...gle.com, linux@....linux.org.uk
Cc:	Vincent Guittot <vincent.guittot@...aro.org>
Subject: [RFC 6/6] ARM: sched: clear SD_SHARE_POWERLINE

The ARM platforms take advantage of packing small tasks on few cores.
This is true even when the cores of a cluster can't be powergated
independantly.

Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>
---
 arch/arm/kernel/topology.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 26c12c6..00511d0 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -226,6 +226,11 @@ static inline void update_cpu_power(unsigned int cpuid, unsigned int mpidr) {}
  */
 struct cputopo_arm cpu_topology[NR_CPUS];
 
+int arch_sd_share_power_line(void)
+{
+	return 0*SD_SHARE_POWERLINE;
+}
+
 const struct cpumask *cpu_coregroup_mask(int cpu)
 {
 	return &cpu_topology[cpu].core_sibling;
-- 
1.7.9.5

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