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SubjectRe: [PATCH 6/6] x86: intel_pstate: handle runtime turbo disablement/enablement in freq. invariance
Hi Giovanni,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[cannot apply to v5.4-rc7 next-20191111]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Giovanni-Gherdovich/Add-support-for-frequency-invariance-for-some-x86/20191113-035438
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git a0e813f26ebcb25c0b5e504498fbd796cca1a4ba
config: i386-randconfig-e001-201945 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

drivers/cpufreq/intel_pstate.c: In function 'intel_pstate_update_limits':
>> drivers/cpufreq/intel_pstate.c:925:3: error: implicit declaration of function 'set_arch_max_freq' [-Werror=implicit-function-declaration]
set_arch_max_freq(global.turbo_disabled);
^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/set_arch_max_freq +925 drivers/cpufreq/intel_pstate.c

913
914 static void intel_pstate_update_limits(unsigned int cpu)
915 {
916 mutex_lock(&intel_pstate_driver_lock);
917
918 update_turbo_state();
919 /*
920 * If turbo has been turned on or off globally, policy limits for
921 * all CPUs need to be updated to reflect that.
922 */
923 if (global.turbo_disabled_mf != global.turbo_disabled) {
924 global.turbo_disabled_mf = global.turbo_disabled;
> 925 set_arch_max_freq(global.turbo_disabled);
926 for_each_possible_cpu(cpu)
927 intel_pstate_update_max_freq(cpu);
928 } else {
929 cpufreq_update_policy(cpu);
930 }
931
932 mutex_unlock(&intel_pstate_driver_lock);
933 }
934

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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