Messages in this thread |  | | Date | Sun, 1 May 2022 01:51:52 +0800 | From | kernel test robot <> | Subject | [tip:x86/cleanups 7/11] arch/x86/kernel/cpu/aperfmperf.c:502:6: warning: no previous prototype for 'arch_scale_freq_tick' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/cleanups head: fb4c77c21aba03677f283acda3cae748ef866abf commit: bb6e89df9028b2fab0ce6ac71cd9ef25b6ada32d [7/11] x86/aperfmperf: Make parts of the frequency invariance code unconditional config: i386-tinyconfig (https://download.01.org/0day-ci/archive/20220501/202205010106.06xRBR2C-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=bb6e89df9028b2fab0ce6ac71cd9ef25b6ada32d git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip x86/cleanups git checkout bb6e89df9028b2fab0ce6ac71cd9ef25b6ada32d # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/cpu/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> arch/x86/kernel/cpu/aperfmperf.c:502:6: warning: no previous prototype for 'arch_scale_freq_tick' [-Wmissing-prototypes] 502 | void arch_scale_freq_tick(void) | ^~~~~~~~~~~~~~~~~~~~
vim +/arch_scale_freq_tick +502 arch/x86/kernel/cpu/aperfmperf.c
73a5fa7d51366a Thomas Gleixner 2022-04-15 501 73a5fa7d51366a Thomas Gleixner 2022-04-15 @502 void arch_scale_freq_tick(void) 73a5fa7d51366a Thomas Gleixner 2022-04-15 503 { 73a5fa7d51366a Thomas Gleixner 2022-04-15 504 struct aperfmperf *s = this_cpu_ptr(&cpu_samples); 73a5fa7d51366a Thomas Gleixner 2022-04-15 505 u64 acnt, mcnt, aperf, mperf; 73a5fa7d51366a Thomas Gleixner 2022-04-15 506 bb6e89df9028b2 Thomas Gleixner 2022-04-15 507 if (!cpu_feature_enabled(X86_FEATURE_APERFMPERF)) 73a5fa7d51366a Thomas Gleixner 2022-04-15 508 return; 73a5fa7d51366a Thomas Gleixner 2022-04-15 509 73a5fa7d51366a Thomas Gleixner 2022-04-15 510 rdmsrl(MSR_IA32_APERF, aperf); 73a5fa7d51366a Thomas Gleixner 2022-04-15 511 rdmsrl(MSR_IA32_MPERF, mperf); 73a5fa7d51366a Thomas Gleixner 2022-04-15 512 acnt = aperf - s->aperf; 73a5fa7d51366a Thomas Gleixner 2022-04-15 513 mcnt = mperf - s->mperf; 73a5fa7d51366a Thomas Gleixner 2022-04-15 514 73a5fa7d51366a Thomas Gleixner 2022-04-15 515 s->aperf = aperf; 73a5fa7d51366a Thomas Gleixner 2022-04-15 516 s->mperf = mperf; 73a5fa7d51366a Thomas Gleixner 2022-04-15 517 73a5fa7d51366a Thomas Gleixner 2022-04-15 518 scale_freq_tick(acnt, mcnt); 73a5fa7d51366a Thomas Gleixner 2022-04-15 519 } bb6e89df9028b2 Thomas Gleixner 2022-04-15 520
:::::: The code at line 502 was first introduced by commit :::::: 73a5fa7d51366a549a9f2e3ee875ae51aa0b5580 x86/aperfmperf: Restructure arch_scale_freq_tick()
:::::: TO: Thomas Gleixner <tglx@linutronix.de> :::::: CC: Thomas Gleixner <tglx@linutronix.de>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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