Re: [RFC v2 1/7] RISC-V: Remove the current perf implementation

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

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Hi Atish,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on tip/perf/core]
[also build test ERROR on linux/master linus/master v5.13-rc3 next-20210528]
[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/Atish-Patra/Improve-RISC-V-Perf-support-using-SBI-PMU-extension/20210529-024622
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 875dd7bf548104bc1d2c5784a6af6cf38215a216
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/ec7fb82094e0c02cf7e6adce5a07b09744a02c22
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Atish-Patra/Improve-RISC-V-Perf-support-using-SBI-PMU-extension/20210529-024622
        git checkout ec7fb82094e0c02cf7e6adce5a07b09744a02c22
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>):

   kernel/events/core.c: In function 'bpf_overflow_handler':
>> kernel/events/core.c:9913:11: error: assignment to 'bpf_user_pt_regs_t *' {aka 'struct user_regs_struct *'} from incompatible pointer type 'struct pt_regs *' [-Werror=incompatible-pointer-types]
    9913 |  ctx.regs = perf_arch_bpf_user_pt_regs(regs);
         |           ^
   cc1: some warnings being treated as errors


vim +9913 kernel/events/core.c

6fb2915df7f074 kernel/perf_event.c  Li Zefan           2009-10-15  9901  
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9902  #ifdef CONFIG_BPF_SYSCALL
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9903  static void bpf_overflow_handler(struct perf_event *event,
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9904  				 struct perf_sample_data *data,
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9905  				 struct pt_regs *regs)
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9906  {
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9907  	struct bpf_perf_event_data_kern ctx = {
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9908  		.data = data,
7d9285e82db5de kernel/events/core.c Yonghong Song      2017-10-05  9909  		.event = event,
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9910  	};
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9911  	int ret = 0;
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9912  
c895f6f703ad7d kernel/events/core.c Hendrik Brueckner  2017-12-04 @9913  	ctx.regs = perf_arch_bpf_user_pt_regs(regs);
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9914  	if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1))
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9915  		goto out;
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9916  	rcu_read_lock();
88575199cc65de kernel/events/core.c Daniel Borkmann    2016-11-26  9917  	ret = BPF_PROG_RUN(event->prog, &ctx);
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9918  	rcu_read_unlock();
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9919  out:
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9920  	__this_cpu_dec(bpf_prog_active);
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9921  	if (!ret)
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9922  		return;
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9923  
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9924  	event->orig_overflow_handler(event, data, regs);
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9925  }
aa6a5f3cb2b2ed kernel/events/core.c Alexei Starovoitov 2016-09-01  9926  

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

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