Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ff1176468d368232b684f75e82563369208bc371 commit: 7d37cb2c912dc5c25ffac784a4f9b98c06c6bd08 lib: fix kconfig dependency on ARCH_WANT_FRAME_POINTERS date: 4 months ago config: csky-randconfig-s031-20210726 (attached as .config) compiler: csky-linux-gcc (GCC) 10.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7d37cb2c912dc5c25ffac784a4f9b98c06c6bd08 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7d37cb2c912dc5c25ffac784a4f9b98c06c6bd08 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> arch/csky/kernel/perf_event.c:878:6: sparse: sparse: symbol 'csky_pmu_event_set_period' was not declared. Should it be static? >> arch/csky/kernel/perf_event.c:1178:34: sparse: sparse: incorrect type in argument 4 (different address spaces) @@ expected void [noderef] __percpu *percpu_dev_id @@ got struct pmu_hw_events * @@ arch/csky/kernel/perf_event.c:1178:34: sparse: expected void [noderef] __percpu *percpu_dev_id arch/csky/kernel/perf_event.c:1178:34: sparse: got struct pmu_hw_events * >> arch/csky/kernel/perf_event.c:1195:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __percpu * @@ got struct pmu_hw_events * @@ arch/csky/kernel/perf_event.c:1195:38: sparse: expected void [noderef] __percpu * arch/csky/kernel/perf_event.c:1195:38: sparse: got struct pmu_hw_events * >> arch/csky/kernel/perf_event.c:1293:5: sparse: sparse: symbol 'csky_pmu_device_probe' was not declared. Should it be static? vim +/csky_pmu_event_set_period +878 arch/csky/kernel/perf_event.c f50fd2d8524c15 Guo Ren 2019-01-02 877 f622fbf205966a Mao Han 2019-06-04 @878 int csky_pmu_event_set_period(struct perf_event *event) f622fbf205966a Mao Han 2019-06-04 879 { f622fbf205966a Mao Han 2019-06-04 880 struct hw_perf_event *hwc = &event->hw; f622fbf205966a Mao Han 2019-06-04 881 s64 left = local64_read(&hwc->period_left); f622fbf205966a Mao Han 2019-06-04 882 s64 period = hwc->sample_period; f622fbf205966a Mao Han 2019-06-04 883 int ret = 0; f622fbf205966a Mao Han 2019-06-04 884 f622fbf205966a Mao Han 2019-06-04 885 if (unlikely(left <= -period)) { f622fbf205966a Mao Han 2019-06-04 886 left = period; f622fbf205966a Mao Han 2019-06-04 887 local64_set(&hwc->period_left, left); f622fbf205966a Mao Han 2019-06-04 888 hwc->last_period = period; f622fbf205966a Mao Han 2019-06-04 889 ret = 1; f622fbf205966a Mao Han 2019-06-04 890 } f622fbf205966a Mao Han 2019-06-04 891 f622fbf205966a Mao Han 2019-06-04 892 if (unlikely(left <= 0)) { f622fbf205966a Mao Han 2019-06-04 893 left += period; f622fbf205966a Mao Han 2019-06-04 894 local64_set(&hwc->period_left, left); f622fbf205966a Mao Han 2019-06-04 895 hwc->last_period = period; f622fbf205966a Mao Han 2019-06-04 896 ret = 1; f622fbf205966a Mao Han 2019-06-04 897 } f622fbf205966a Mao Han 2019-06-04 898 f622fbf205966a Mao Han 2019-06-04 899 if (left > (s64)csky_pmu.max_period) f622fbf205966a Mao Han 2019-06-04 900 left = csky_pmu.max_period; f622fbf205966a Mao Han 2019-06-04 901 f622fbf205966a Mao Han 2019-06-04 902 /* f622fbf205966a Mao Han 2019-06-04 903 * The hw event starts counting from this event offset, f622fbf205966a Mao Han 2019-06-04 904 * mark it to be able to extract future "deltas": f622fbf205966a Mao Han 2019-06-04 905 */ f622fbf205966a Mao Han 2019-06-04 906 local64_set(&hwc->prev_count, (u64)(-left)); f622fbf205966a Mao Han 2019-06-04 907 f622fbf205966a Mao Han 2019-06-04 908 if (hw_raw_write_mapping[hwc->idx] != NULL) f622fbf205966a Mao Han 2019-06-04 909 hw_raw_write_mapping[hwc->idx]((u64)(-left) & f622fbf205966a Mao Han 2019-06-04 910 csky_pmu.max_period); f622fbf205966a Mao Han 2019-06-04 911 f622fbf205966a Mao Han 2019-06-04 912 cpwcr(HPOFSR, ~BIT(hwc->idx) & cprcr(HPOFSR)); f622fbf205966a Mao Han 2019-06-04 913 f622fbf205966a Mao Han 2019-06-04 914 perf_event_update_userpage(event); f622fbf205966a Mao Han 2019-06-04 915 f622fbf205966a Mao Han 2019-06-04 916 return ret; f622fbf205966a Mao Han 2019-06-04 917 } f622fbf205966a Mao Han 2019-06-04 918 :::::: The code at line 878 was first introduced by commit :::::: f622fbf205966a8e911f81a00db17997dd171404 csky: Add pmu interrupt support :::::: TO: Mao Han <han_mao@xxxxxxxxx> :::::: CC: Guo Ren <ren_guo@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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