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* [mcgrof:sysctl-testing 18/18] kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl'
@ 2022-04-15 17:35 kernel test robot
  2022-04-15 21:58   ` Luis Chamberlain
  0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2022-04-15 17:35 UTC (permalink / raw)
  To: Wei Xiao; +Cc: llvm, kbuild-all, linux-kernel, Luis Chamberlain

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git sysctl-testing
head:   7cde53da38a3ea00d75ef6a6ab06fa85b80bcf87
commit: 7cde53da38a3ea00d75ef6a6ab06fa85b80bcf87 [18/18] ftrace: move sysctl_ftrace_enabled to ftrace.c
config: mips-randconfig-c004-20220414 (https://download.01.org/0day-ci/archive/20220416/202204160113.5Pvywod8-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6b7e6ea489f6dd45a9b0da9ac20871560917b9b0)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/commit/?id=7cde53da38a3ea00d75ef6a6ab06fa85b80bcf87
        git remote add mcgrof https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git
        git fetch --no-tags mcgrof sysctl-testing
        git checkout 7cde53da38a3ea00d75ef6a6ab06fa85b80bcf87
        # 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=mips 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/ftrace.c:297:5: warning: no previous prototype for function '__register_ftrace_function'
   int __register_ftrace_function(struct ftrace_ops
   ^
   kernel/trace/ftrace.c:297:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __register_ftrace_function(struct ftrace_ops
   ^
   static
   kernel/trace/ftrace.c:340:5: warning: no previous prototype for function '__unregister_ftrace_function'
   int __unregister_ftrace_function(struct ftrace_ops
   ^
   kernel/trace/ftrace.c:340:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __unregister_ftrace_function(struct ftrace_ops
   ^
   static
   kernel/trace/ftrace.c:3922:15: warning: no previous prototype for function 'arch_ftrace_match_adjust'
   char Makefile arch certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt __weak arch_ftrace_match_adjust(char const char
   ^
   kernel/trace/ftrace.c:3922:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   char Makefile arch certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt __weak arch_ftrace_match_adjust(char const char
   ^
   static
>> kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl'
   static void ftrace_startup_sysctl(void)
   ^
>> kernel/trace/ftrace.c:3086:13: warning: unused function 'ftrace_shutdown_sysctl'
   static void ftrace_shutdown_sysctl(void)
   ^
>> kernel/trace/ftrace.c:7912:13: warning: unused function 'is_permanent_ops_registered'
   static bool is_permanent_ops_registered(void)
   ^
   fatal error: error in backend: Nested variants found in inline asm string: ' .set push
   .set mips64r2
   .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 155, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
   1: ll $1, $2 # atomic_add_return
   addu $0, $1, $3
   sc $0, $2
   beqz $0, 1b
   addu $0, $1, $3
   .set pop
   '
   PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
   Stack dump:
   0. Program arguments: clang -Wp,-MMD,kernel/trace/.ftrace.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0x84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu11 --target=mips-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mno-check-zero-division -mabi=32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips32r2 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-ath79 -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=1024 -fstack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -fno-stack-clash-protection -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -Wno-shift-negative-value -gsplit-dwarf -gdwarf-5 -I kernel/trace -I ./kernel/trace -ffunction-sections -fdata-sections -DKBUILD_MODFILE="kernel/trace/libftrace" -DKBUILD_BASENAME="ftrace" -DKBUILD_MODNAME="libftrace" -D__KBUILD_MODNAME=kmod_libftrace -c -o kernel/trace/ftrace.o kernel/trace/ftrace.c
   1. <eof> parser at end of file
   2. Code generation
   3. Running pass 'Function Pass Manager' on module 'kernel/trace/ftrace.c'.
   4. Running pass 'Mips Assembly Printer' on function '@profile_graph_entry'
   #0 0x00005562159e0a7f Signals.cpp:0:0
   #1 0x00005562159de8a4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34f18a4)
   #2 0x000055621591e087 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3431087)
   #3 0x00005562159d6ede llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34e9ede)
   #4 0x00005562135aa92b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10bd92b)
   #5 0x0000556215924bac llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3437bac)
   #6 0x0000556216654260 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4167260)
   #7 0x0000556216650162 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4163162)
   #8 0x0000556214030d07 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1b43d07)
   #9 0x0000556214d0c47d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
   #10 0x0000556215156457 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c69457)
   #11 0x00005562151565d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c695d1)
   #12 0x000055621515714f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c6a14f)
   #13 0x0000556215d0b4c6 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x381e4c6)
   #14 0x0000556216974ca3 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487ca3)
   #15 0x00005562174a8a01 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4fbba01)
   #16 0x0000556216974395 clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487395)
   #17 0x000055621636a831 clang::FrontendAction::Execute() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e7d831)
   #18 0x00005562162ffb1a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e12b1a)
   #19 0x000055621643163b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3f4463b)
   #20 0x00005562135abedc cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10beedc)
   #21 0x00005562135a8bab ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
   #22 0x00005562161923f5 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
   #23 0x000055621591df43 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3430f43)
   #24 0x0000556216192cee clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
   #25 0x0000556216166de7 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c79de7)
   #26 0x00005562161677c7 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c7a7c7)
   #27 0x0000556216170e19 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c83e19)
   #28 0x00005562134f5d2f main (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1008d2f)
   #29 0x00007fc6ba6eb7fd __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x237fd)
   #30 0x00005562135a86ca _start (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10bb6ca)
   clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
   clang version 15.0.0 (git://gitmirror/llvm_project 6b7e6ea489f6dd45a9b0da9ac20871560917b9b0)
   Target: mips-unknown-linux
   Thread model: posix
   InstalledDir: /opt/cross/clang-6b7e6ea489/bin
   clang-15: note: diagnostic msg:
   Makefile arch certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt


vim +/ftrace_startup_sysctl +3068 kernel/trace/ftrace.c

3d0833953e1b98 Steven Rostedt           2008-05-12  3067  
e309b41dd65aa9 Ingo Molnar              2008-05-12 @3068  static void ftrace_startup_sysctl(void)
b0fc494fae96a7 Steven Rostedt           2008-05-12  3069  {
1619dc3f8f555e Pratyush Anand           2015-03-06  3070  	int command;
1619dc3f8f555e Pratyush Anand           2015-03-06  3071  
4eebcc81a33fbc Steven Rostedt           2008-05-12  3072  	if (unlikely(ftrace_disabled))
4eebcc81a33fbc Steven Rostedt           2008-05-12  3073  		return;
4eebcc81a33fbc Steven Rostedt           2008-05-12  3074  
d61f82d06672f5 Steven Rostedt           2008-05-12  3075  	/* Force update next time */
d61f82d06672f5 Steven Rostedt           2008-05-12  3076  	saved_ftrace_func = NULL;
60a7ecf42661f2 Steven Rostedt           2008-11-05  3077  	/* ftrace_start_up is true if we want ftrace running */
1619dc3f8f555e Pratyush Anand           2015-03-06  3078  	if (ftrace_start_up) {
1619dc3f8f555e Pratyush Anand           2015-03-06  3079  		command = FTRACE_UPDATE_CALLS;
1619dc3f8f555e Pratyush Anand           2015-03-06  3080  		if (ftrace_graph_active)
1619dc3f8f555e Pratyush Anand           2015-03-06  3081  			command |= FTRACE_START_FUNC_RET;
524a38682573b2 Steven Rostedt (Red Hat  2015-03-06  3082) 		ftrace_startup_enable(command);
1619dc3f8f555e Pratyush Anand           2015-03-06  3083  	}
b0fc494fae96a7 Steven Rostedt           2008-05-12  3084  }
b0fc494fae96a7 Steven Rostedt           2008-05-12  3085  
e309b41dd65aa9 Ingo Molnar              2008-05-12 @3086  static void ftrace_shutdown_sysctl(void)
b0fc494fae96a7 Steven Rostedt           2008-05-12  3087  {
1619dc3f8f555e Pratyush Anand           2015-03-06  3088  	int command;
1619dc3f8f555e Pratyush Anand           2015-03-06  3089  
4eebcc81a33fbc Steven Rostedt           2008-05-12  3090  	if (unlikely(ftrace_disabled))
4eebcc81a33fbc Steven Rostedt           2008-05-12  3091  		return;
4eebcc81a33fbc Steven Rostedt           2008-05-12  3092  
60a7ecf42661f2 Steven Rostedt           2008-11-05  3093  	/* ftrace_start_up is true if ftrace is running */
1619dc3f8f555e Pratyush Anand           2015-03-06  3094  	if (ftrace_start_up) {
1619dc3f8f555e Pratyush Anand           2015-03-06  3095  		command = FTRACE_DISABLE_CALLS;
1619dc3f8f555e Pratyush Anand           2015-03-06  3096  		if (ftrace_graph_active)
1619dc3f8f555e Pratyush Anand           2015-03-06  3097  			command |= FTRACE_STOP_FUNC_RET;
1619dc3f8f555e Pratyush Anand           2015-03-06  3098  		ftrace_run_update_code(command);
1619dc3f8f555e Pratyush Anand           2015-03-06  3099  	}
b0fc494fae96a7 Steven Rostedt           2008-05-12  3100  }
b0fc494fae96a7 Steven Rostedt           2008-05-12  3101  

:::::: The code at line 3068 was first introduced by commit
:::::: e309b41dd65aa953f86765eeeecc941d8e1e8b8f ftrace: remove notrace

:::::: TO: Ingo Molnar <mingo@elte.hu>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [mcgrof:sysctl-testing 18/18] kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl'
  2022-04-15 17:35 [mcgrof:sysctl-testing 18/18] kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl' kernel test robot
@ 2022-04-15 21:58   ` Luis Chamberlain
  0 siblings, 0 replies; 3+ messages in thread
From: Luis Chamberlain @ 2022-04-15 21:58 UTC (permalink / raw)
  To: kernel test robot; +Cc: Wei Xiao, llvm, kbuild-all, linux-kernel

I just posted a fix fo this.

  Luis

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [mcgrof:sysctl-testing 18/18] kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl'
@ 2022-04-15 21:58   ` Luis Chamberlain
  0 siblings, 0 replies; 3+ messages in thread
From: Luis Chamberlain @ 2022-04-15 21:58 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 38 bytes --]

I just posted a fix fo this.

  Luis

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-04-15 21:58 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-15 17:35 [mcgrof:sysctl-testing 18/18] kernel/trace/ftrace.c:3068:13: warning: unused function 'ftrace_startup_sysctl' kernel test robot
2022-04-15 21:58 ` Luis Chamberlain
2022-04-15 21:58   ` Luis Chamberlain

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