]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
cpufreq: ondemand: Rework the handling of powersave bias updates
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Thu, 18 Feb 2016 01:28:24 +0000 (02:28 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 9 Mar 2016 13:41:08 +0000 (14:41 +0100)
commitd1db75fffc22504c586c3fae8d602384ea899340
treecf2f6613ba88eb244162f8f1ad4fe8be05651ff4
parenta33cce1c6cc3268d8b4843bf1e4ac1e70b27d107
cpufreq: ondemand: Rework the handling of powersave bias updates

The ondemand_powersave_bias_init() function used for resetting data
fields related to the powersave bias tunable of the ondemand governor
works by walking all of the online CPUs in the system and updating the
od_cpu_dbs_info_s structures for all of them.

However, if governor tunables are per policy, the update should not
touch the CPUs that are not associated with the given dbs_data.

Moreover, since the data fields in question are only ever used for
policy->cpu in each policy governed by ondemand, the update can be
limited to those specific CPUs.

Rework the code to take the above observations into account.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
drivers/cpufreq/cpufreq_ondemand.c