Re: [RFC] bpf: lbr: enable reading LBR from tracing bpf programs

[kernel test robot <lkp@intel.com>]

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Hi Song,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf-next/master]
[also build test WARNING on next-20210817]
[cannot apply to bpf/master tip/perf/core v5.14-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Song-Liu/bpf-lbr-enable-reading-LBR-from-tracing-bpf-programs/20210818-093217
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-s001-20210816 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-348-gf0e6938b-dirty
        # https://github.com/0day-ci/linux/commit/bdd132049280755216aa3d2f4417bb4253b777d1
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Song-Liu/bpf-lbr-enable-reading-LBR-from-tracing-bpf-programs/20210818-093217
        git checkout bdd132049280755216aa3d2f4417bb4253b777d1
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
>> arch/x86/events/intel/lbr.c:1866:1: sparse: sparse: symbol '__pcpu_scope_bpf_lbr_entries' was not declared. Should it be static?
>> arch/x86/events/intel/lbr.c:1867:1: sparse: sparse: symbol '__pcpu_scope_bpf_lbr_cnt' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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