From: kernel test robot <lkp@intel.com>
To: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
Masami Hiramatsu <mhiramat@kernel.org>
Subject: kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)'
Date: Tue, 28 Sep 2021 09:43:14 +0800 [thread overview]
Message-ID: <202109280909.aPlO2bOQ-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 92477dd1faa650e50bd3bb35a6c0b8d09198cc35
commit: d19ad0775dcd64b49eecf4fa79c17959ebfbd26b ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs
date: 11 months ago
config: nds32-buildonly-randconfig-r002-20210927 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 11.2.0
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/torvalds/linux.git/commit/?id=d19ad0775dcd64b49eecf4fa79c17959ebfbd26b
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d19ad0775dcd64b49eecf4fa79c17959ebfbd26b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nds32
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/ftrace.c: In function 'ftrace_ops_get_list_func':
>> kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Wcast-function-type]
128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
| ^
kernel/trace/ftrace.c:174:24: note: in expansion of macro 'ftrace_ops_list_func'
174 | return ftrace_ops_list_func;
| ^~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: In function 'update_ftrace_function':
>> kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Wcast-function-type]
128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
| ^
kernel/trace/ftrace.c:207:24: note: in expansion of macro 'ftrace_ops_list_func'
207 | func = ftrace_ops_list_func;
| ^~~~~~~~~~~~~~~~~~~~
>> kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Wcast-function-type]
128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
| ^
kernel/trace/ftrace.c:220:21: note: in expansion of macro 'ftrace_ops_list_func'
220 | if (func == ftrace_ops_list_func) {
| ^~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: At top level:
kernel/trace/ftrace.c:302:5: warning: no previous prototype for '__register_ftrace_function' [-Wmissing-prototypes]
302 | int __register_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:345:5: warning: no previous prototype for '__unregister_ftrace_function' [-Wmissing-prototypes]
345 | int __unregister_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:584:5: warning: no previous prototype for 'ftrace_profile_pages_init' [-Wmissing-prototypes]
584 | int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: In function 'ftrace_modify_all_code':
>> kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Wcast-function-type]
128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
| ^
kernel/trace/ftrace.c:2672:49: note: in expansion of macro 'ftrace_ops_list_func'
2672 | err = ftrace_update_ftrace_func(ftrace_ops_list_func);
| ^~~~~~~~~~~~~~~~~~~~
>> kernel/trace/ftrace.c:128:31: warning: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Wcast-function-type]
128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
| ^
kernel/trace/ftrace.c:2682:48: note: in expansion of macro 'ftrace_ops_list_func'
2682 | if (update && ftrace_trace_function != ftrace_ops_list_func) {
| ^~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: At top level:
kernel/trace/ftrace.c:3856:15: warning: no previous prototype for 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
3856 | char * __weak arch_ftrace_match_adjust(char *str, const char *search)
| ^~~~~~~~~~~~~~~~~~~~~~~~
vim +128 kernel/trace/ftrace.c
16444a8a40d4c7 Arnaldo Carvalho de Melo 2008-05-12 121
2f5f6ad9390c1e Steven Rostedt 2011-08-08 122 #if ARCH_SUPPORTS_FTRACE_OPS
2f5f6ad9390c1e Steven Rostedt 2011-08-08 123 static void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
d19ad0775dcd64 Steven Rostedt (VMware 2020-10-28 124) struct ftrace_ops *op, struct ftrace_regs *fregs);
2f5f6ad9390c1e Steven Rostedt 2011-08-08 125 #else
2f5f6ad9390c1e Steven Rostedt 2011-08-08 126 /* See comment below, where ftrace_ops_list_func is defined */
2f5f6ad9390c1e Steven Rostedt 2011-08-08 127 static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip);
2f5f6ad9390c1e Steven Rostedt 2011-08-08 @128 #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
2f5f6ad9390c1e Steven Rostedt 2011-08-08 129 #endif
b848914ce39589 Steven Rostedt 2011-05-04 130
:::::: The code at line 128 was first introduced by commit
:::::: 2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e ftrace: Pass ftrace_ops as third parameter to function trace callback
:::::: TO: Steven Rostedt <srostedt@redhat.com>
:::::: CC: Steven Rostedt <rostedt@goodmis.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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