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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-02-10 15:53:50 (GMT)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-09 13:40:53 (GMT)
commit9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4 (patch)
tree22a2bc3fe8bcaba486f16739788d5e1bf3bcfdb7 /arch
parenta4675fbc4a7abe072ac6ba38c252f22a91ebcd94 (diff)
downloadlinux-9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4.tar.xz
cpufreq: governor: Replace timers with utilization update callbacks
Instead of using a per-CPU deferrable timer for queuing up governor work items, register a utilization update callback that will be invoked from the scheduler on utilization changes. The sampling rate is still the same as what was used for the deferrable timers and the added irq_work overhead should be offset by the eliminated timers overhead, so in theory the functional impact of this patch should not be significant. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
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