* [linux-next:master 7006/8600] kernel/trace/fgraph.c:37:12: warning: no previous prototype for 'ftrace_enable_ftrace_graph_caller'
@ 2022-05-04 20:30 kernel test robot
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From: kernel test robot @ 2022-05-04 20:30 UTC (permalink / raw)
To: Chengming Zhou; +Cc: kbuild-all, Linux Memory Management List, Catalin Marinas
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: bb6ee10133faa3c4742ab8343b5e488cdb29445e
commit: e999995c84c3abb6dcae83f8c35942a8d4ee0451 [7006/8600] ftrace: cleanup ftrace_graph_caller enable and disable
config: microblaze-buildonly-randconfig-r006-20220504 (https://download.01.org/0day-ci/archive/20220505/202205050438.jIyxoMNu-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e999995c84c3abb6dcae83f8c35942a8d4ee0451
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout e999995c84c3abb6dcae83f8c35942a8d4ee0451
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=microblaze SHELL=/bin/bash kernel/trace/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> kernel/trace/fgraph.c:37:12: warning: no previous prototype for 'ftrace_enable_ftrace_graph_caller' [-Wmissing-prototypes]
37 | int __weak ftrace_enable_ftrace_graph_caller(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/trace/fgraph.c:46:12: warning: no previous prototype for 'ftrace_disable_ftrace_graph_caller' [-Wmissing-prototypes]
46 | int __weak ftrace_disable_ftrace_graph_caller(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/fgraph.c:241:15: warning: no previous prototype for 'ftrace_return_to_handler' [-Wmissing-prototypes]
241 | unsigned long ftrace_return_to_handler(unsigned long frame_pointer)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/fgraph.c:356:6: warning: no previous prototype for 'ftrace_graph_sleep_time_control' [-Wmissing-prototypes]
356 | void ftrace_graph_sleep_time_control(bool enable)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/ftrace_enable_ftrace_graph_caller +37 kernel/trace/fgraph.c
32
33 /*
34 * archs can override this function if they must do something
35 * to enable hook for graph tracer.
36 */
> 37 int __weak ftrace_enable_ftrace_graph_caller(void)
38 {
39 return 0;
40 }
41
42 /*
43 * archs can override this function if they must do something
44 * to disable hook for graph tracer.
45 */
> 46 int __weak ftrace_disable_ftrace_graph_caller(void)
47 {
48 return 0;
49 }
50
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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2022-05-04 20:30 [linux-next:master 7006/8600] kernel/trace/fgraph.c:37:12: warning: no previous prototype for 'ftrace_enable_ftrace_graph_caller' kernel test robot
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