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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1349595838-31274-7-git-send-email-vincent.guittot@linaro.org>
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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/