![]() sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in /sys/devices/system/cpu/ control the MC/SMT power savings policy for the scheduler. Based on the values (1-enable, 0-disable) for these controls, sched groups cpu power will be determined for different domains. When power savings policy is enabled and under light load conditions, scheduler will minimize the physical packages/cpu cores carrying the load and thus conserving power(with a perf impact based on the workload characteristics... see OLS 2005 CMP kernel scheduler paper for more details..) Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Con Kolivas <kernel@kolivas.org> Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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.. | ||
power | ||
Kconfig | ||
Makefile | ||
attribute_container.c | ||
base.h | ||
bus.c | ||
class.c | ||
core.c | ||
cpu.c | ||
dd.c | ||
dmapool.c | ||
driver.c | ||
firmware.c | ||
firmware_class.c | ||
hypervisor.c | ||
init.c | ||
isa.c | ||
map.c | ||
memory.c | ||
node.c | ||
platform.c | ||
sys.c | ||
topology.c | ||
transport_class.c |