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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-02-10 16:53:50 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-09 14:40:53 +0100
commit9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4 (patch)
tree22a2bc3fe8bcaba486f16739788d5e1bf3bcfdb7 /README
parentcpufreq: intel_pstate: Replace timers with utilization update callbacks (diff)
downloadlinux-9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4.tar.xz
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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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