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authorVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>2009-05-11 20:09:14 +0530
committerIngo Molnar <mingo@elte.hu>2009-05-11 23:57:56 +0200
commit2ff799d3cff1ecb274049378b28120ee5c1c5e5f (patch)
tree4658ce8c196b4625297d22131a204ba9946f6d29 /kernel/timer.c
parent7961386fe9596e6bf03d09948a73c5df9653325b (diff)
sched: Don't export sched_mc_power_savings on multi-socket single core system
Fix to prevent sched_mc_power_saving from being exported through sysfs for multi-scoket single core system. Max cores should be always greater than one (1). My earlier patch that introduced fix for not exporting 'sched_mc_power_saving' on laptops broke it on multi-socket single core system. This fix addresses issue on both laptop and multi-socket single core system. Below are the Test results: 1. Single socket - multi-core Before Patch: Does not export 'sched_mc_power_saving' After Patch: Does not export 'sched_mc_power_saving' Result: Pass 2. Multi Socket - single core Before Patch: exports 'sched_mc_power_saving' After Patch: Does not export 'sched_mc_power_saving' Result: Pass 3. Multi Socket - Multi core Before Patch: exports 'sched_mc_power_saving' After Patch: exports 'sched_mc_power_saving' [ Impact: make the sched_mc_power_saving control available more consistently ] Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Cc: Suresh B Siddha <suresh.b.siddha@intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090511143914.GB4853@dirshya.in.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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