drivers/dma-buf/st-dma-fence-unwrap.c:25:4: warning: unused function 'to_mock_fence'

From: kernel test robot
Date: Fri Apr 15 2022 - 08:19:47 EST

Next message: Mark Brown: "Re: plumbers talk on kCFI, BTI, & IBT?"
Previous message: Catalin Marinas: "Re: [PATCH 07/10] crypto: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi Christian,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 028192fea1de083f4f12bfb1eb7c4d7beb5c8ecd
commit: 64a8f92fd783e750cdb81af75942dcd53bbf61bd dma-buf: add dma_fence_unwrap v2
date: 3 weeks ago
config: mips-randconfig-c004-20220414 (https://download.01.org/0day-ci/archive/20220415/202204152004.TReE0FcA-lkp@xxxxxxxxx/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/torvalds/linux.git/commit/?id=64a8f92fd783e750cdb81af75942dcd53bbf61bd
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 64a8f92fd783e750cdb81af75942dcd53bbf61bd
# 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 drivers/dma-buf/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

drivers/dma-buf/st-dma-fence-unwrap.c:125:6: warning: variable 'err' set but not used
int err = 0;
^
drivers/dma-buf/st-dma-fence-unwrap.c:167:6: warning: variable 'err' set but not used
int err = 0;
^
drivers/dma-buf/st-dma-fence-unwrap.c:209:6: warning: variable 'err' set but not used
int err = 0;
^
>> drivers/dma-buf/st-dma-fence-unwrap.c:25:4: warning: unused function 'to_mock_fence'
} dma_fence {
^
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 = 156, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $1, $2 # atomic_fetch_sub
subu $0, $1, $3
sc $0, $2
beqz $0, 1b
.set pop
move $0, $1
'
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,drivers/dma-buf/.st-dma-fence-unwrap.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=gnu89 --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 -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -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 -I drivers/dma-buf -I ./drivers/dma-buf -DMODULE -mlong-calls -DKBUILD_BASENAME="st_dma_fence_unwrap" -DKBUILD_MODNAME="dmabuf_selftests" -D__KBUILD_MODNAME=kmod_dmabuf_selftests -c -o drivers/dma-buf/st-dma-fence-unwrap.o drivers/dma-buf/st-dma-fence-unwrap.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'drivers/dma-buf/st-dma-fence-unwrap.c'.
4. Running pass 'Mips Assembly Printer' on function '@sanitycheck'
#0 0x000055e4c7382a7f Signals.cpp:0:0
#1 0x000055e4c73808a4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34f18a4)
#2 0x000055e4c72c0087 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3431087)
#3 0x000055e4c7378ede llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34e9ede)
#4 0x000055e4c4f4c92b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10bd92b)
#5 0x000055e4c72c6bac llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3437bac)
#6 0x000055e4c7ff6260 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4167260)
#7 0x000055e4c7ff2162 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4163162)
#8 0x000055e4c59d2d07 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1b43d07)
#9 0x000055e4c66ae47d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x000055e4c6af8457 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c69457)
#11 0x000055e4c6af85d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c695d1)
#12 0x000055e4c6af914f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c6a14f)
#13 0x000055e4c76ad4c6 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 0x000055e4c8316ca3 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487ca3)
#15 0x000055e4c8e4aa01 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4fbba01)
#16 0x000055e4c8316395 clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487395)
#17 0x000055e4c7d0c831 clang::FrontendAction::Execute() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e7d831)
#18 0x000055e4c7ca1b1a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e12b1a)
#19 0x000055e4c7dd363b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3f4463b)
#20 0x000055e4c4f4dedc cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10beedc)
#21 0x000055e4c4f4abab ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x000055e4c7b343f5 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 0x000055e4c72bff43 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3430f43)
#24 0x000055e4c7b34cee 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 0x000055e4c7b08de7 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c79de7)
#26 0x000055e4c7b097c7 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 0x000055e4c7b12e19 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c83e19)
#28 0x000055e4c4e97d2f main (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1008d2f)
#29 0x00007ff272d617fd __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x237fd)
#30 0x000055e4c4f4a6ca _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
--
drivers/dma-buf/st-dma-fence-unwrap.c:125:6: warning: variable 'err' set but not used
int err = 0;
^
drivers/dma-buf/st-dma-fence-unwrap.c:167:6: warning: variable 'err' set but not used
int err = 0;
^
drivers/dma-buf/st-dma-fence-unwrap.c:209:6: warning: variable 'err' set but not used
int err = 0;
^
>> drivers/dma-buf/st-dma-fence-unwrap.c:25:4: warning: unused function 'to_mock_fence'
} dma_fence {
^
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 = 156, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $1, $2 # atomic_fetch_sub
subu $0, $1, $3
sc $0, $2
beqz $0, 1b
.set pop
move $0, $1
'
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,drivers/dma-buf/.st-dma-fence-unwrap.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=gnu89 --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 -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -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 -DMODULE -mlong-calls -DKBUILD_BASENAME="st_dma_fence_unwrap" -DKBUILD_MODNAME="dmabuf_selftests" -D__KBUILD_MODNAME=kmod_dmabuf_selftests -c -o drivers/dma-buf/st-dma-fence-unwrap.o drivers/dma-buf/st-dma-fence-unwrap.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'drivers/dma-buf/st-dma-fence-unwrap.c'.
4. Running pass 'Mips Assembly Printer' on function '@sanitycheck'
#0 0x000055724d179a7f Signals.cpp:0:0
#1 0x000055724d1778a4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34f18a4)
#2 0x000055724d0b7087 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3431087)
#3 0x000055724d16fede llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x34e9ede)
#4 0x000055724ad4392b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10bd92b)
#5 0x000055724d0bdbac llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3437bac)
#6 0x000055724dded260 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4167260)
#7 0x000055724dde9162 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4163162)
#8 0x000055724b7c9d07 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1b43d07)
#9 0x000055724c4a547d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x000055724c8ef457 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c69457)
#11 0x000055724c8ef5d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c695d1)
#12 0x000055724c8f014f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x2c6a14f)
#13 0x000055724d4a44c6 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 0x000055724e10dca3 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487ca3)
#15 0x000055724ec41a01 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4fbba01)
#16 0x000055724e10d395 clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x4487395)
#17 0x000055724db03831 clang::FrontendAction::Execute() (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e7d831)
#18 0x000055724da98b1a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3e12b1a)
#19 0x000055724dbca63b (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3f4463b)
#20 0x000055724ad44edc cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x10beedc)
#21 0x000055724ad41bab ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x000055724d92b3f5 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 0x000055724d0b6f43 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3430f43)
#24 0x000055724d92bcee 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 0x000055724d8ffde7 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c79de7)
#26 0x000055724d9007c7 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 0x000055724d909e19 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x3c83e19)
#28 0x000055724ac8ed2f main (/opt/cross/clang-6b7e6ea489/bin/clang-15+0x1008d2f)
#29 0x00007f7a246957fd __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x237fd)
#30 0x000055724ad416ca _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 +/to_mock_fence +25 drivers/dma-buf/st-dma-fence-unwrap.c

21
22 static inline struct mock_fence {
23 struct dma_fence base;
24 spinlock_t lock;
> 25 } *to_mock_fence(struct dma_fence *f) {
26 return container_of(f, struct mock_fence, base);
27 }
28
29 static const char *mock_name(struct dma_fence *f)
30 {
31 return "mock";
32 }
33
34 static const struct dma_fence_ops mock_ops = {
35 .get_driver_name = mock_name,
36 .get_timeline_name = mock_name,
37 };
38
39 static struct dma_fence *mock_fence(void)
40 {
41 struct mock_fence *f;
42
43 f = kmalloc(sizeof(*f), GFP_KERNEL);
44 if (!f)
45 return NULL;
46
47 spin_lock_init(&f->lock);
48 dma_fence_init(&f->base, &mock_ops, &f->lock, 0, 0);
49
50 return &f->base;
51 }
52
53 static struct dma_fence *mock_array(unsigned int num_fences, ...)
54 {
55 struct dma_fence_array *array;
56 struct dma_fence **fences;
57 va_list valist;
58 int i;
59
60 fences = kcalloc(num_fences, sizeof(*fences), GFP_KERNEL);
61 if (!fences)
62 return NULL;
63
64 va_start(valist, num_fences);
65 for (i = 0; i < num_fences; ++i)
66 fences[i] = va_arg(valist, typeof(*fences));
67 va_end(valist);
68
69 array = dma_fence_array_create(num_fences, fences,
70 dma_fence_context_alloc(1),
71 1, false);
72 if (!array)
73 goto cleanup;
74 return &array->base;
75
76 cleanup:
77 for (i = 0; i < num_fences; ++i)
78 dma_fence_put(fences[i]);
79 kfree(fences);
80 return NULL;
81 }
82
83 static struct dma_fence *mock_chain(struct dma_fence *prev,
84 struct dma_fence *fence)
85 {
86 struct dma_fence_chain *f;
87
88 f = dma_fence_chain_alloc();
89 if (!f) {
90 dma_fence_put(prev);
91 dma_fence_put(fence);
92 return NULL;
93 }
94
95 dma_fence_chain_init(f, prev, fence, 1);
96 return &f->base;
97 }
98
99 static int sanitycheck(void *arg)
100 {
101 struct dma_fence *f, *chain, *array;
102 int err = 0;
103
104 f = mock_fence();
105 if (!f)
106 return -ENOMEM;
107
108 array = mock_array(1, f);
109 if (!array)
110 return -ENOMEM;
111
112 chain = mock_chain(NULL, array);
113 if (!chain)
114 return -ENOMEM;
115
116 dma_fence_signal(f);
117 dma_fence_put(chain);
118 return err;
119 }
120
121 static int unwrap_array(void *arg)
122 {
123 struct dma_fence *fence, *f1, *f2, *array;
124 struct dma_fence_unwrap iter;
> 125 int err = 0;
126
127 f1 = mock_fence();
128 if (!f1)
129 return -ENOMEM;
130
131 f2 = mock_fence();
132 if (!f2) {
133 dma_fence_put(f1);
134 return -ENOMEM;
135 }
136
137 array = mock_array(2, f1, f2);
138 if (!array)
139 return -ENOMEM;
140
141 dma_fence_unwrap_for_each(fence, &iter, array) {
142 if (fence == f1) {
143 f1 = NULL;
144 } else if (fence == f2) {
145 f2 = NULL;
146 } else {
147 pr_err("Unexpected fence!\n");
148 err = -EINVAL;
149 }
150 }
151
152 if (f1 || f2) {
153 pr_err("Not all fences seen!\n");
154 err = -EINVAL;
155 }
156
157 dma_fence_signal(f1);
158 dma_fence_signal(f2);
159 dma_fence_put(array);
160 return 0;
161 }
162

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

Next message: Mark Brown: "Re: plumbers talk on kCFI, BTI, & IBT?"
Previous message: Catalin Marinas: "Re: [PATCH 07/10] crypto: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]