linux-kernel - RE: [PATCH] sched: Enable arch-specific asym packing option in sched domain

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Date:	Fri, 4 May 2012 15:06:21 -0700
From:	Diwakar Tundlam <dtundlam@...dia.com>
To:	'Ingo Molnar' <mingo@...nel.org>,
	'Peter Zijlstra' <a.p.zijlstra@...llo.nl>,
	'Andrew Morton' <akpm@...ux-foundation.org>,
	'Christoph Lameter' <cl@...two.org>,
	'Michael Neuling' <mikey@...ling.org>,
	'Stephen Rothwell' <sfr@...b.auug.org.au>,
	'Benjamin Herrenschmidt' <benh@...nel.crashing.org>,
	'David Rientjes' <rientjes@...gle.com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
CC:	Peter De Schrijver <pdeschrijver@...dia.com>
Subject: RE: [PATCH] sched: Enable arch-specific asym packing option in
 sched domain

Add arch specific (weak) routine to set (or not set) the ASYM_PACKING
sched domain flag. This change itself does nothing, but allows archs
that require asym-packing option to set it by implementing the arch
specific routine to turn it on.

The weak symbol is already defined in sched/core.c but was mis-spelled
in the header file. Fixed spelling error in the weak symbol definition.

Signed-off-by: Diwakar Tundlam <dtundlam@...dia.com>

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c569719..cf793f0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -903,7 +903,7 @@ static inline int sd_balance_for_package_power(void)
 	return SD_PREFER_SIBLING;
 }
 
-extern int __weak arch_sd_sibiling_asym_packing(void);
+extern int __weak arch_sd_sibling_asym_packing(void);
 
 /*
  * Optimise SD flags for power savings:
diff --git a/include/linux/topology.h b/include/linux/topology.h
index b480403..eb09cd4 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -168,6 +168,7 @@ int arch_update_cpu_topology(void);
 				| 0*SD_SHARE_CPUPOWER			\
 				| 0*SD_SHARE_PKG_RESOURCES		\
 				| 0*SD_SERIALIZE			\
+				| arch_sd_sibling_asym_packing()	\
 				| sd_balance_for_package_power()	\
 				| sd_power_saving_flags()		\
 				,					\
--
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