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intel_pstate: Fix "performance" mode behavior with HWP enabled

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If hardware-driven P-state selection (HWP) is enabled, the
"performance" mode of intel_pstate should only allow the processor
to use the highest-performance P-state available.  That is not
the case currently, so make it actually happen.

Acked-by: Srinivas Pandruvada <[email protected]>
Signed-off-by: Alexandra Yates <[email protected]>
[ rjw: Subject and changelog ]
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Alexandra Yates 2015-11-18 14:58:40 -08:00 • committed by Rafael J. Wysocki
commit 584ee3dcb1
1 changed files with 2 additions and 0 deletions
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2
drivers/cpufreq/intel_pstate.c
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@ -1101,6 +1101,8 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
policy->max >= policy->cpuinfo.max_freq) {
pr_debug("intel_pstate: set performance\n");
limits = &performance_limits;
if (hwp_active)
intel_pstate_hwp_set();
return 0;
}