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authorChristoph Lameter <clameter@sgi.com>2006-12-10 13:20:29 +0300
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-10 20:55:43 +0300
commit08c183f31bdbb709f177f6d3110d5f288ea33933 (patch)
treebe7b84c07f3b0bf29473bad2b7b788fa189f948e /include/linux/topology.h
parent1bd77f2da58e9cdd1f159217887343dadd9af417 (diff)
downloadlinux-08c183f31bdbb709f177f6d3110d5f288ea33933.tar.xz
[PATCH] sched: add option to serialize load balancing
Large sched domains can be very expensive to scan. Add an option SD_SERIALIZE to the sched domain flags. If that flag is set then we make sure that no other such domain is being balanced. [akpm@osdl.org: build fix] Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Peter Williams <pwil3058@bigpond.net.au> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/topology.h')
-rw-r--r--include/linux/topology.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/topology.h b/include/linux/topology.h
index b93bb6cc6cc2..6c5a6e6e813b 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -194,7 +194,8 @@
.wake_idx = 0, /* unused */ \
.forkexec_idx = 0, /* unused */ \
.per_cpu_gain = 100, \
- .flags = SD_LOAD_BALANCE, \
+ .flags = SD_LOAD_BALANCE \
+ | SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 64, \
.nr_balance_failed = 0, \