[jolsa-perf:bpf/ftrace 3/7] kernel/bpf/syscall.c:2937:3: error: implicit declaration of function 'bpf_trace_run2'

From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: [jolsa-perf:bpf/ftrace 3/7] kernel/bpf/syscall.c:2937:3: error: implicit declaration of function 'bpf_trace_run2'
Date: Wed, 14 Apr 2021 01:18:49 +0800	[thread overview]
Message-ID: <202104140144.xkQ9LcA0-lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/ftrace
head:   75bc48cb4414f68f3a427d021860af113920adfd
commit: a1f1f141147a15afbfcc897661c59e23285f941a [3/7] bpf: Add support to attach program to ftrace probe
config: powerpc64-randconfig-r016-20210413 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9829f5e6b1bca9b61efc629770d28bb9014dec45)
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
        # install powerpc64 cross compiling tool for clang build
        # apt-get install binutils-powerpc64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=a1f1f141147a15afbfcc897661c59e23285f941a
        git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
        git fetch --no-tags jolsa-perf bpf/ftrace
        git checkout a1f1f141147a15afbfcc897661c59e23285f941a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 

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/bpf/syscall.c:2937:3: error: implicit declaration of function 'bpf_trace_run2' [-Werror,-Wimplicit-function-declaration]
                   bpf_trace_run2(tr_link->link.prog, ip, parent_ip);
                   ^
   1 error generated.

vim +/bpf_trace_run2 +2937 kernel/bpf/syscall.c

  2919	
  2920	static void
  2921	bpf_ftrace_function_call(unsigned long ip, unsigned long parent_ip,
  2922				 struct ftrace_ops *ops,  struct ftrace_regs *fregs)
  2923	{
  2924		struct bpf_tracing_ftrace_link *tr_link;
  2925		struct bpf_prog *prog;
  2926		u64 start;
  2927	
  2928		tr_link = container_of(ops, struct bpf_tracing_ftrace_link, ops);
  2929		prog = tr_link->link.prog;
  2930	
  2931		if (prog->aux->sleepable)
  2932			start = __bpf_prog_enter_sleepable(prog);
  2933		else
  2934			start = __bpf_prog_enter(prog);
  2935	
  2936		if (start)
> 2937			bpf_trace_run2(tr_link->link.prog, ip, parent_ip);
  2938	
  2939		if (prog->aux->sleepable)
  2940			__bpf_prog_exit_sleepable(prog, start);
  2941		else
  2942			__bpf_prog_exit(prog, start);
  2943	}
  2944	

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

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