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authorGregory Haskins <ghaskins@novell.com>2008-05-12 15:21:01 -0400
committerIngo Molnar <mingo@elte.hu>2008-06-06 09:19:28 -0400
commit6e0534f278199f1e3dd1049b9bc19a7a5b87ada1 (patch)
tree25f4da14ec32927742db9f599ac779b4e83d1763 /kernel/Makefile
parentf333fdc9098b71e2687e4e9b6349fcb352960d66 (diff)
sched: use a 2-d bitmap for searching lowest-pri CPU
The current code use a linear algorithm which causes scaling issues on larger SMP machines. This patch replaces that algorithm with a 2-dimensional bitmap to reduce latencies in the wake-up path. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/Makefile')
-rw-r--r--kernel/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index 1c9938addb9d..ecdd2d335639 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -69,6 +69,7 @@ obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
69obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o 69obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
70obj-$(CONFIG_MARKERS) += marker.o 70obj-$(CONFIG_MARKERS) += marker.o
71obj-$(CONFIG_LATENCYTOP) += latencytop.o 71obj-$(CONFIG_LATENCYTOP) += latencytop.o
72obj-$(CONFIG_SMP) += sched_cpupri.o
72 73
73ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y) 74ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y)
74# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is 75# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is