[PATCH] tracing: make tracer_init_tracefs initcall asynchronous

[kernel test robot]

Hi Mark-PK,

I love your patch! Perhaps something to improve:

[auto build test WARNING on rostedt-trace/for-next]
[also build test WARNING on v5.17-rc7 next-20220310]
[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/Mark-PK-Tsai/tracing-make-tracer_init_tracefs-initcall-asynchronous/20220311-192857
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
config: riscv-randconfig-r042-20220310 (https://download.01.org/0day-ci/archive/20220312/202203120304.sJ9EJI90-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/134c5fb991a16bf28b500e8e52296447013b5b01
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Mark-PK-Tsai/tracing-make-tracer_init_tracefs-initcall-asynchronous/20220311-192857
        git checkout 134c5fb991a16bf28b500e8e52296447013b5b01
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.text+0xa792a): Section mismatch in reference from the function tracefs_init() to the function .init.text:create_trace_instances()
The function tracefs_init() references
the function __init create_trace_instances().
This is often because tracefs_init lacks a __init
annotation or the annotation of create_trace_instances is wrong.
--
>> WARNING: modpost: vmlinux.o(.text+0xade5e): Section mismatch in reference from the function event_trace_init() to the function .init.text:early_event_add_tracer()
The function event_trace_init() references
the function __init early_event_add_tracer().
This is often because event_trace_init lacks a __init
annotation or the annotation of early_event_add_tracer is wrong.

---
0-DAY CI Kernel Test Service
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