tree: https://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next head: e4bdb161fbb94e741a060e6dc69ab690ab5624da commit: 512022c8fb5ff1fe7c734b00d1bab0f9485dcf01 [2/11] riscv: use vDSO common flow to reduce the latency of the time-related functions config: riscv-randconfig-r001-20200606 (attached as .config) compiler: riscv32-linux-gcc (GCC) 9.3.0 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 git checkout 512022c8fb5ff1fe7c734b00d1bab0f9485dcf01 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): | ^~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:314:17: note: in definition of macro '__READ_ONCE' 314 | union { typeof(x) __val; char __c[1]; } __u; | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ include/asm-generic/preempt.h:11:40: error: invalid type argument of '->' (have 'int') 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~ include/linux/compiler.h:314:17: note: in definition of macro '__READ_ONCE' 314 | union { typeof(x) __val; char __c[1]; } __u; | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ include/asm-generic/preempt.h:11:40: error: invalid type argument of '->' (have 'int') 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~ include/linux/compiler.h:316:22: note: in definition of macro '__READ_ONCE' 316 | __read_once_size(&(x), __u.__c, sizeof(x)); | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ include/asm-generic/preempt.h:11:40: error: invalid type argument of '->' (have 'int') 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~ include/linux/compiler.h:316:42: note: in definition of macro '__READ_ONCE' 316 | __read_once_size(&(x), __u.__c, sizeof(x)); | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ include/asm-generic/preempt.h:11:40: error: invalid type argument of '->' (have 'int') 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~ include/linux/compiler.h:318:30: note: in definition of macro '__READ_ONCE' 318 | __read_once_size_nocheck(&(x), __u.__c, sizeof(x)); | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ include/asm-generic/preempt.h:11:40: error: invalid type argument of '->' (have 'int') 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~ include/linux/compiler.h:318:50: note: in definition of macro '__READ_ONCE' 318 | __read_once_size_nocheck(&(x), __u.__c, sizeof(x)); | ^ include/asm-generic/preempt.h:11:9: note: in expansion of macro 'READ_ONCE' 11 | return READ_ONCE(current_thread_info()->preempt_count); | ^~~~~~~~~ In file included from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/asm-generic/preempt.h: In function 'preempt_count_ptr': include/asm-generic/preempt.h:16:31: error: invalid type argument of '->' (have 'int') 16 | return &current_thread_info()->preempt_count; | ^~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/asm-generic/preempt.h: In function '__preempt_count_dec_and_test': include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/asm-generic/preempt.h:69:36: note: in expansion of macro 'tif_need_resched' 69 | return !--*preempt_count_ptr() && tif_need_resched(); | ^~~~~~~~~~~~~~~~ include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ In file included from arch/riscv/include/asm/bug.h:9, from include/linux/bug.h:5, from arch/riscv/include/asm/current.h:13, from include/linux/sched.h:12, from arch/riscv/kernel/asm-offsets.c:10: include/asm-generic/preempt.h: In function 'should_resched': include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/compiler.h:33:34: note: in definition of macro '__branch_check__' 33 | ______r = __builtin_expect(!!(x), expect); | ^ 77 | return unlikely(preempt_count() == preempt_offset && | ^~~~~~~~ include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/asm-generic/preempt.h:78:4: note: in expansion of macro 'tif_need_resched' 78 | tif_need_resched()); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ In file included from arch/riscv/include/asm/bug.h:9, from include/linux/bug.h:5, from arch/riscv/include/asm/current.h:13, from include/linux/sched.h:12, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/compiler.h:35:19: note: in definition of macro '__branch_check__' 35 | expect, is_constant); | ^~~~~~~~~~~ 77 | return unlikely(preempt_count() == preempt_offset && | ^~~~~~~~ include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/asm-generic/preempt.h:78:4: note: in expansion of macro 'tif_need_resched' 78 | tif_need_resched()); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ In file included from include/linux/compiler_types.h:68, from <command-line>: include/asm-generic/mmiowb.h: In function 'mmiowb_set_pending': arch/riscv/include/asm/smp.h:44:54: error: invalid type argument of '->' (have 'int') 44 | #define raw_smp_processor_id() (current_thread_info()->cpu) | ^~ include/linux/compiler-gcc.h:58:26: note: in definition of macro 'RELOC_HIDE' 58 | (typeof(ptr)) (__ptr + (off)); | ^~~ include/asm-generic/percpu.h:44:31: note: in expansion of macro 'SHIFT_PERCPU_PTR' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:25: note: in expansion of macro 'per_cpu_offset' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:40: note: in expansion of macro 'raw_smp_processor_id' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:44:53: note: in expansion of macro '__my_cpu_offset' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~ include/linux/percpu-defs.h:242:2: note: in expansion of macro 'arch_raw_cpu_ptr' 242 | arch_raw_cpu_ptr(ptr); | ^~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:252:27: note: in expansion of macro 'raw_cpu_ptr' 252 | #define this_cpu_ptr(ptr) raw_cpu_ptr(ptr) | ^~~~~~~~~~~ include/asm-generic/mmiowb.h:30:26: note: in expansion of macro 'this_cpu_ptr' 30 | #define __mmiowb_state() this_cpu_ptr(&__mmiowb_state) | ^~~~~~~~~~~~ include/asm-generic/mmiowb.h:37:28: note: in expansion of macro '__mmiowb_state' 37 | struct mmiowb_state *ms = __mmiowb_state(); | ^~~~~~~~~~~~~~ include/asm-generic/mmiowb.h: In function 'mmiowb_spin_lock': arch/riscv/include/asm/smp.h:44:54: error: invalid type argument of '->' (have 'int') 44 | #define raw_smp_processor_id() (current_thread_info()->cpu) | ^~ include/linux/compiler-gcc.h:58:26: note: in definition of macro 'RELOC_HIDE' 58 | (typeof(ptr)) (__ptr + (off)); | ^~~ include/asm-generic/percpu.h:44:31: note: in expansion of macro 'SHIFT_PERCPU_PTR' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:25: note: in expansion of macro 'per_cpu_offset' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:40: note: in expansion of macro 'raw_smp_processor_id' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:44:53: note: in expansion of macro '__my_cpu_offset' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~ include/linux/percpu-defs.h:242:2: note: in expansion of macro 'arch_raw_cpu_ptr' 242 | arch_raw_cpu_ptr(ptr); | ^~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:252:27: note: in expansion of macro 'raw_cpu_ptr' 252 | #define this_cpu_ptr(ptr) raw_cpu_ptr(ptr) | ^~~~~~~~~~~ include/asm-generic/mmiowb.h:30:26: note: in expansion of macro 'this_cpu_ptr' 30 | #define __mmiowb_state() this_cpu_ptr(&__mmiowb_state) | ^~~~~~~~~~~~ include/asm-generic/mmiowb.h:43:28: note: in expansion of macro '__mmiowb_state' 43 | struct mmiowb_state *ms = __mmiowb_state(); | ^~~~~~~~~~~~~~ include/asm-generic/mmiowb.h: In function 'mmiowb_spin_unlock': arch/riscv/include/asm/smp.h:44:54: error: invalid type argument of '->' (have 'int') 44 | #define raw_smp_processor_id() (current_thread_info()->cpu) | ^~ include/linux/compiler-gcc.h:58:26: note: in definition of macro 'RELOC_HIDE' 58 | (typeof(ptr)) (__ptr + (off)); | ^~~ include/asm-generic/percpu.h:44:31: note: in expansion of macro 'SHIFT_PERCPU_PTR' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:25: note: in expansion of macro 'per_cpu_offset' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~ include/asm-generic/percpu.h:31:40: note: in expansion of macro 'raw_smp_processor_id' 31 | #define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) | ^~~~~~~~~~~~~~~~~~~~ include/asm-generic/percpu.h:44:53: note: in expansion of macro '__my_cpu_offset' 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~ include/linux/percpu-defs.h:242:2: note: in expansion of macro 'arch_raw_cpu_ptr' 242 | arch_raw_cpu_ptr(ptr); | ^~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:252:27: note: in expansion of macro 'raw_cpu_ptr' 252 | #define this_cpu_ptr(ptr) raw_cpu_ptr(ptr) | ^~~~~~~~~~~ include/asm-generic/mmiowb.h:30:26: note: in expansion of macro 'this_cpu_ptr' 30 | #define __mmiowb_state() this_cpu_ptr(&__mmiowb_state) | ^~~~~~~~~~~~ include/asm-generic/mmiowb.h:49:28: note: in expansion of macro '__mmiowb_state' 49 | struct mmiowb_state *ms = __mmiowb_state(); | ^~~~~~~~~~~~~~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/linux/sched.h: In function 'scheduler_ipi': include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/linux/preempt.h:271:6: note: in expansion of macro 'tif_need_resched' 271 | if (tif_need_resched()) | ^~~~~~~~~~~~~~~~ include/linux/sched.h:1745:2: note: in expansion of macro 'preempt_fold_need_resched' 1745 | preempt_fold_need_resched(); | ^~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ In file included from arch/riscv/include/asm/bug.h:9, from include/linux/bug.h:5, from arch/riscv/include/asm/current.h:13, from include/linux/sched.h:12, from arch/riscv/kernel/asm-offsets.c:10: include/linux/sched.h: In function 'need_resched': include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/compiler.h:33:34: note: in definition of macro '__branch_check__' 33 | ______r = __builtin_expect(!!(x), expect); | ^ 1855 | return unlikely(tif_need_resched()); | ^~~~~~~~ include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/linux/sched.h:1855:18: note: in expansion of macro 'tif_need_resched' 1855 | return unlikely(tif_need_resched()); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ In file included from arch/riscv/include/asm/bug.h:9, from include/linux/bug.h:5, from arch/riscv/include/asm/current.h:13, from include/linux/sched.h:12, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:98:22: warning: passing argument 1 of 'test_ti_thread_flag' makes pointer from integer without a cast [-Wint-conversion] 98 | test_ti_thread_flag(current_thread_info(), flag) | ^~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/compiler.h:35:19: note: in definition of macro '__branch_check__' 35 | expect, is_constant); | ^~~~~~~~~~~ 1855 | return unlikely(tif_need_resched()); | ^~~~~~~~ include/linux/thread_info.h:100:28: note: in expansion of macro 'test_thread_flag' 100 | #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) | ^~~~~~~~~~~~~~~~ include/linux/sched.h:1855:18: note: in expansion of macro 'tif_need_resched' 1855 | return unlikely(tif_need_resched()); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/preempt.h:5, from ./arch/riscv/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/riscv/kernel/asm-offsets.c:10: include/linux/thread_info.h:82:59: note: expected 'struct thread_info *' but argument is of type 'int' 82 | static inline int test_ti_thread_flag(struct thread_info *ti, int flag) | ~~~~~~~~~~~~~~~~~~~~^~ arch/riscv/kernel/asm-offsets.c: At top level: arch/riscv/kernel/asm-offsets.c:14:6: warning: no previous prototype for 'asm_offsets' [-Wmissing-prototypes] 14 | void asm_offsets(void) | ^~~~~~~~~~~ In file included from arch/riscv/kernel/asm-offsets.c:9: arch/riscv/kernel/asm-offsets.c: In function 'asm_offsets': include/linux/compiler_types.h:133:35: error: 'struct task_struct' has no member named 'thread_info' 133 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("n.ascii "->" #sym " %0 " #val """ : : "i" (val)) | ^~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof' 11 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~~~ arch/riscv/kernel/asm-offsets.c:32:2: note: in expansion of macro 'OFFSET' 32 | OFFSET(TASK_TI, task_struct, thread_info); | ^~~~~~ include/linux/compiler_types.h:133:35: error: 'struct task_struct' has no member named 'thread_info' 133 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("n.ascii "->" #sym " %0 " #val """ : : "i" (val)) | ^~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof' 11 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~~~ arch/riscv/kernel/asm-offsets.c:33:2: note: in expansion of macro 'OFFSET' 33 | OFFSET(TASK_TI_FLAGS, task_struct, thread_info.flags); | ^~~~~~ include/linux/compiler_types.h:133:35: error: 'struct task_struct' has no member named 'thread_info' 133 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("n.ascii "->" #sym " %0 " #val """ : : "i" (val)) | ^~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof' 11 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~~~ arch/riscv/kernel/asm-offsets.c:34:2: note: in expansion of macro 'OFFSET' 34 | OFFSET(TASK_TI_PREEMPT_COUNT, task_struct, thread_info.preempt_count); | ^~~~~~ include/linux/compiler_types.h:133:35: error: 'struct task_struct' has no member named 'thread_info' 133 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("n.ascii "->" #sym " %0 " #val """ : : "i" (val)) | ^~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof' 11 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~~~ arch/riscv/kernel/asm-offsets.c:35:2: note: in expansion of macro 'OFFSET' 35 | OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp); | ^~~~~~ include/linux/compiler_types.h:133:35: error: 'struct task_struct' has no member named 'thread_info' 133 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("n.ascii "->" #sym " %0 " #val """ : : "i" (val)) | ^~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof' 11 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~~~ arch/riscv/kernel/asm-offsets.c:36:2: note: in expansion of macro 'OFFSET' 36 | OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp); | ^~~~~~ vim +/unlikely +77 include/asm-generic/preempt.h bdb43806589096 Peter Zijlstra 2013-09-10 71 bdb43806589096 Peter Zijlstra 2013-09-10 72 /* bdb43806589096 Peter Zijlstra 2013-09-10 73 * Returns true when we need to resched and can (barring IRQ state). bdb43806589096 Peter Zijlstra 2013-09-10 74 */ fe32d3cd5e8eb0 Konstantin Khlebnikov 2015-07-15 75 static __always_inline bool should_resched(int preempt_offset) bdb43806589096 Peter Zijlstra 2013-09-10 76 { fe32d3cd5e8eb0 Konstantin Khlebnikov 2015-07-15 @77 return unlikely(preempt_count() == preempt_offset && fe32d3cd5e8eb0 Konstantin Khlebnikov 2015-07-15 78 tif_need_resched()); bdb43806589096 Peter Zijlstra 2013-09-10 79 } bdb43806589096 Peter Zijlstra 2013-09-10 80 :::::: The code at line 77 was first introduced by commit :::::: fe32d3cd5e8eb0f82e459763374aa80797023403 sched/preempt: Fix cond_resched_lock() and cond_resched_softirq() :::::: TO: Konstantin Khlebnikov <khlebnikov(a)yandex-team.ru&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; 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