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Date: Fri, 15 Oct 2021 09:28:51 +0800
From: kernel test robot <lkp@...el.com>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: kbuild-all@...ts.01.org,
"Gustavo A. R. Silva" <gustavo@...eddedor.com>,
LKML <linux-kernel@...r.kernel.org>,
Steven Rostedt <rostedt@...dmis.org>
Subject: [gustavoars:for-next/cast-function 3/4]
include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside
parameter list will not be visible outside of this definition or declaration
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/cast-function
head: 21078041965eb5a2e83d296690a93243611a3c27
commit: c45ede6c27819bb038af313b475fdf50ce755dd6 [3/4] ftrace: Fix -Wmissing-prototypes errors
config: i386-randconfig-r001-20211014 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=c45ede6c27819bb038af313b475fdf50ce755dd6
git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
git fetch --no-tags gustavoars for-next/cast-function
git checkout c45ede6c27819bb038af313b475fdf50ce755dd6
# save the attached .config to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/trace/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/perf_event.h:49,
from include/linux/trace_events.h:10,
from kernel/trace/synth_event_gen_test.c:9:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
--
In file included from kernel/trace/ftrace.c:29:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
kernel/trace/ftrace.c:297:5: warning: no previous prototype for '__register_ftrace_function' [-Wmissing-prototypes]
297 | int __register_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:340:5: warning: no previous prototype for '__unregister_ftrace_function' [-Wmissing-prototypes]
340 | int __unregister_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:579:5: warning: no previous prototype for 'ftrace_profile_pages_init' [-Wmissing-prototypes]
579 | int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:3871:15: warning: no previous prototype for 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
3871 | char * __weak arch_ftrace_match_adjust(char *str, const char *search)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:7029:6: error: conflicting types for 'arch_ftrace_ops_list_func'
7029 | void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from kernel/trace/ftrace.c:29:
include/linux/ftrace.h:48:6: note: previous declaration of 'arch_ftrace_ops_list_func' was here
48 | void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from kernel/trace/trace.c:31:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
kernel/trace/trace.c: In function 'trace_check_vprintf':
kernel/trace/trace.c:3837:3: warning: function 'trace_check_vprintf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
3837 | trace_seq_vprintf(&iter->seq, iter->fmt, ap);
| ^~~~~~~~~~~~~~~~~
kernel/trace/trace.c:3892:3: warning: function 'trace_check_vprintf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
3892 | trace_seq_vprintf(&iter->seq, p, ap);
| ^~~~~~~~~~~~~~~~~
--
In file included from kernel/trace/trace_output.c:10:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
kernel/trace/trace_output.c: In function 'trace_output_raw':
kernel/trace/trace_output.c:331:2: warning: function 'trace_output_raw' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
331 | trace_seq_vprintf(s, trace_event_format(iter, fmt), ap);
| ^~~~~~~~~~~~~~~~~
--
In file included from kernel/trace/trace_preemptirq.c:11:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
kernel/trace/trace_preemptirq.c:88:16: warning: no previous prototype for 'trace_hardirqs_on_caller' [-Wmissing-prototypes]
88 | __visible void trace_hardirqs_on_caller(unsigned long caller_addr)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace_preemptirq.c:103:16: warning: no previous prototype for 'trace_hardirqs_off_caller' [-Wmissing-prototypes]
103 | __visible void trace_hardirqs_off_caller(unsigned long caller_addr)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from kernel/trace/fgraph.c:11:
>> include/linux/ftrace.h:49:41: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
49 | struct ftrace_ops *op, struct ftrace_regs *fregs);
| ^~~~~~~~~~~
kernel/trace/fgraph.c:232:15: warning: no previous prototype for 'ftrace_return_to_handler' [-Wmissing-prototypes]
232 | unsigned long ftrace_return_to_handler(unsigned long frame_pointer)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/fgraph.c:347:6: warning: no previous prototype for 'ftrace_graph_sleep_time_control' [-Wmissing-prototypes]
347 | void ftrace_graph_sleep_time_control(bool enable)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +49 include/linux/ftrace.h
32
33 #ifdef CONFIG_FUNCTION_TRACER
34 struct ftrace_ops;
35 /*
36 * If the arch's mcount caller does not support all of ftrace's
37 * features, then it must call an indirect function that
38 * does. Or at least does enough to prevent any unwelcome side effects.
39 *
40 * Also define the function prototype that these architectures use
41 * to call the ftrace_ops_list_func().
42 */
43 #if !ARCH_SUPPORTS_FTRACE_OPS
44 # define FTRACE_FORCE_LIST_FUNC 1
45 void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip);
46 #else
47 # define FTRACE_FORCE_LIST_FUNC 0
48 void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
> 49 struct ftrace_ops *op, struct ftrace_regs *fregs);
50 #endif
51 #endif /* CONFIG_FUNCTION_TRACER */
52
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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