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| author | Gregory Haskins <ghaskins@novell.com> | 2008-05-12 21:21:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-06 15:19:28 +0200 |
| commit | 6e0534f278199f1e3dd1049b9bc19a7a5b87ada1 (patch) | |
| tree | 25f4da14ec32927742db9f599ac779b4e83d1763 /kernel/Makefile | |
| parent | f333fdc9098b71e2687e4e9b6349fcb352960d66 (diff) | |
| download | lwn-6e0534f278199f1e3dd1049b9bc19a7a5b87ada1.tar.gz lwn-6e0534f278199f1e3dd1049b9bc19a7a5b87ada1.zip | |
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/Makefile | 1 |
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-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o obj-$(CONFIG_MARKERS) += marker.o obj-$(CONFIG_LATENCYTOP) += latencytop.o +obj-$(CONFIG_SMP) += sched_cpupri.o ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y) # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is |