[arm-integrator:kernel-in-vmalloc-v5.18-rc1 26/31] include/linux/rcupdate.h:784:2: error: call to undeclared function 'preempt_disable'; ISO C99 and later do not support implicit function declarations

From: kernel test robot
Date: Thu Jun 02 2022 - 12:48:05 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.18-rc1
head: 8e0ac1b6b44d1c62420ad92b2a1cbc106a00f3de
commit: 969a734e01b9cf090fce853d9d706455e5a9cdf1 [26/31] riscv: Make virt_to_pfn() a static inline
config: riscv-randconfig-r031-20220531 (https://download.01.org/0day-ci/archive/20220603/202206030038.x0u6tIk4-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b364c76683f8ef241025a9556300778c07b590c2)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=969a734e01b9cf090fce853d9d706455e5a9cdf1
git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git
git fetch --no-tags arm-integrator kernel-in-vmalloc-v5.18-rc1
git checkout 969a734e01b9cf090fce853d9d706455e5a9cdf1
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv prepare

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

All errors (new ones prefixed by >>):

In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:11:
In file included from include/linux/rbtree.h:24:
>> include/linux/rcupdate.h:784:2: error: call to undeclared function 'preempt_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
preempt_disable();
^
>> include/linux/rcupdate.h:794:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
preempt_disable_notrace();
^
>> include/linux/rcupdate.h:809:2: error: call to undeclared function 'preempt_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
preempt_enable();
^
>> include/linux/rcupdate.h:816:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
preempt_enable_notrace();
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lockdep_assert_preemption_disabled();
^
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:320:31: note: expanded from macro 'this_cpu_read_1'
#define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:320:31: note: expanded from macro 'this_cpu_read_1'
#define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:323:31: note: expanded from macro 'this_cpu_read_2'
#define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:323:31: note: expanded from macro 'this_cpu_read_2'
#define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:326:31: note: expanded from macro 'this_cpu_read_4'
#define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:326:31: note: expanded from macro 'this_cpu_read_4'
#define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:329:31: note: expanded from macro 'this_cpu_read_8'
#define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:608:8: note: expanded from macro 'lockdep_assert_preemption_disabled'
__lockdep_enabled && \
^
include/linux/lockdep.h:580:44: note: expanded from macro '__lockdep_enabled'
#define __lockdep_enabled (debug_locks && !this_cpu_read(lockdep_recursion))
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:329:31: note: expanded from macro 'this_cpu_read_8'
#define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_count'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:609:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
(preempt_count() == 0 && \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:321:23: note: expanded from macro '__pcpu_size_call_return'
case 1: pscr_ret__ = stem##1(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:320:31: note: expanded from macro 'this_cpu_read_1'
#define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:321:23: note: expanded from macro '__pcpu_size_call_return'
case 1: pscr_ret__ = stem##1(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:320:31: note: expanded from macro 'this_cpu_read_1'
#define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:322:23: note: expanded from macro '__pcpu_size_call_return'
case 2: pscr_ret__ = stem##2(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:323:31: note: expanded from macro 'this_cpu_read_2'
#define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:322:23: note: expanded from macro '__pcpu_size_call_return'
case 2: pscr_ret__ = stem##2(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:323:31: note: expanded from macro 'this_cpu_read_2'
#define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_disable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:323:23: note: expanded from macro '__pcpu_size_call_return'
case 4: pscr_ret__ = stem##4(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:326:31: note: expanded from macro 'this_cpu_read_4'
#define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:118:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_disable_notrace(); \
^
In file included from arch/riscv/kernel/asm-offsets.c:10:
In file included from include/linux/mm.h:7:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:55:
In file included from include/linux/preempt.h:78:
In file included from ./arch/riscv/include/generated/asm/preempt.h:1:
In file included from include/asm-generic/preempt.h:5:
In file included from include/linux/thread_info.h:60:
In file included from arch/riscv/include/asm/thread_info.h:11:
In file included from arch/riscv/include/asm/page.h:14:
In file included from arch/riscv/include/asm/pgtable.h:108:
In file included from arch/riscv/include/asm/tlbflush.h:10:
In file included from include/linux/mm_types.h:19:
>> include/linux/seqlock.h:271:2: error: call to undeclared function 'preempt_enable_notrace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
include/linux/lockdep.h:610:9: note: expanded from macro 'lockdep_assert_preemption_disabled'
this_cpu_read(hardirqs_enabled))); \
^
include/linux/percpu-defs.h:507:29: note: expanded from macro 'this_cpu_read'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
include/linux/percpu-defs.h:323:23: note: expanded from macro '__pcpu_size_call_return'
case 4: pscr_ret__ = stem##4(variable); break; \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/percpu.h:326:31: note: expanded from macro 'this_cpu_read_4'
#define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
^
include/asm-generic/percpu.h:138:11: note: expanded from macro 'this_cpu_generic_read'
__ret = __this_cpu_generic_read_nopreempt(pcp); \
^
include/asm-generic/percpu.h:120:2: note: expanded from macro '__this_cpu_generic_read_nopreempt'
preempt_enable_notrace(); \
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[2]: *** [scripts/Makefile.build:120: arch/riscv/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1194: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +/preempt_disable +784 include/linux/rcupdate.h

^1da177e4c3f41 Linus Torvalds 2005-04-16 766
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 767 /**
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 768 * rcu_read_lock_sched() - mark the beginning of a RCU-sched critical section
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 769 *
1893afd6340911 Paul E. McKenney 2021-04-29 770 * This is equivalent to rcu_read_lock(), but also disables preemption.
1893afd6340911 Paul E. McKenney 2021-04-29 771 * Read-side critical sections can also be introduced by anything else that
1893afd6340911 Paul E. McKenney 2021-04-29 772 * disables preemption, including local_irq_disable() and friends. However,
1893afd6340911 Paul E. McKenney 2021-04-29 773 * please note that the equivalence to rcu_read_lock() applies only to
1893afd6340911 Paul E. McKenney 2021-04-29 774 * v5.0 and later. Before v5.0, rcu_read_lock() and rcu_read_lock_sched()
1893afd6340911 Paul E. McKenney 2021-04-29 775 * were unrelated.
3842a0832a1d6e Paul E. McKenney 2011-11-28 776 *
3842a0832a1d6e Paul E. McKenney 2011-11-28 777 * Note that rcu_read_lock_sched() and the matching rcu_read_unlock_sched()
3842a0832a1d6e Paul E. McKenney 2011-11-28 778 * must occur in the same context, for example, it is illegal to invoke
3842a0832a1d6e Paul E. McKenney 2011-11-28 779 * rcu_read_unlock_sched() from process context if the matching
3842a0832a1d6e Paul E. McKenney 2011-11-28 780 * rcu_read_lock_sched() was invoked from an NMI handler.
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 781 */
d6714c22b43fbc Paul E. McKenney 2009-08-22 782 static inline void rcu_read_lock_sched(void)
d6714c22b43fbc Paul E. McKenney 2009-08-22 783 {
d6714c22b43fbc Paul E. McKenney 2009-08-22 @784 preempt_disable();
bc33f24bdca8b6 Paul E. McKenney 2009-08-22 785 __acquire(RCU_SCHED);
d8ab29f8be918b Paul E. McKenney 2011-10-07 786 rcu_lock_acquire(&rcu_sched_lock_map);
f78f5b90c4ffa5 Paul E. McKenney 2015-06-18 787 RCU_LOCKDEP_WARN(!rcu_is_watching(),
bde23c6892878e Heiko Carstens 2012-02-01 788 "rcu_read_lock_sched() used illegally while idle");
d6714c22b43fbc Paul E. McKenney 2009-08-22 789 }
1eba8f84380bed Paul E. McKenney 2009-09-23 790
1eba8f84380bed Paul E. McKenney 2009-09-23 791 /* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
7c614d6461399a Paul E. McKenney 2009-08-24 792 static inline notrace void rcu_read_lock_sched_notrace(void)
d6714c22b43fbc Paul E. McKenney 2009-08-22 793 {
d6714c22b43fbc Paul E. McKenney 2009-08-22 @794 preempt_disable_notrace();
bc33f24bdca8b6 Paul E. McKenney 2009-08-22 795 __acquire(RCU_SCHED);
d6714c22b43fbc Paul E. McKenney 2009-08-22 796 }
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 797
000601bb62330f Tobias Klauser 2020-07-09 798 /**
000601bb62330f Tobias Klauser 2020-07-09 799 * rcu_read_unlock_sched() - marks the end of a RCU-classic critical section
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 800 *
000601bb62330f Tobias Klauser 2020-07-09 801 * See rcu_read_lock_sched() for more information.
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 802 */
d6714c22b43fbc Paul E. McKenney 2009-08-22 803 static inline void rcu_read_unlock_sched(void)
d6714c22b43fbc Paul E. McKenney 2009-08-22 804 {
f78f5b90c4ffa5 Paul E. McKenney 2015-06-18 805 RCU_LOCKDEP_WARN(!rcu_is_watching(),
bde23c6892878e Heiko Carstens 2012-02-01 806 "rcu_read_unlock_sched() used illegally while idle");
d8ab29f8be918b Paul E. McKenney 2011-10-07 807 rcu_lock_release(&rcu_sched_lock_map);
bc33f24bdca8b6 Paul E. McKenney 2009-08-22 808 __release(RCU_SCHED);
d6714c22b43fbc Paul E. McKenney 2009-08-22 @809 preempt_enable();
d6714c22b43fbc Paul E. McKenney 2009-08-22 810 }
1eba8f84380bed Paul E. McKenney 2009-09-23 811
1eba8f84380bed Paul E. McKenney 2009-09-23 812 /* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
7c614d6461399a Paul E. McKenney 2009-08-24 813 static inline notrace void rcu_read_unlock_sched_notrace(void)
d6714c22b43fbc Paul E. McKenney 2009-08-22 814 {
bc33f24bdca8b6 Paul E. McKenney 2009-08-22 815 __release(RCU_SCHED);
d6714c22b43fbc Paul E. McKenney 2009-08-22 @816 preempt_enable_notrace();
d6714c22b43fbc Paul E. McKenney 2009-08-22 817 }
1c50b728c3e734 Mathieu Desnoyers 2008-09-29 818

:::::: The code at line 784 was first introduced by commit
:::::: d6714c22b43fbcbead7e7b706ff270e15f04a791 rcu: Renamings to increase RCU clarity

:::::: TO: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
:::::: CC: Ingo Molnar <mingo@xxxxxxx>

--
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