[tip:WIP.x86/core 1/1] arch/riscv/include/asm/vdso/gettimeofday.h:24:43: error: meaningless 'inline' on asm outside function

From: kernel test robot
Date: Wed Mar 19 2025 - 08:45:45 EST

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Hi Ingo,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/core
head: 9262ee6499954dd387e4507e03b84512ab100706
commit: 9262ee6499954dd387e4507e03b84512ab100706 [1/1] compiler/gcc: Make asm() templates asm __inline__() by default
config: riscv-randconfig-001-20250319 (https://download.01.org/0day-ci/archive/20250319/202503192004.mvMWNurt-lkp@xxxxxxxxx/config)
compiler: clang version 20.1.0 (https://github.com/llvm/llvm-project 24a30daaa559829ad079f2ff7f73eb4e18095f88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250319/202503192004.mvMWNurt-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503192004.mvMWNurt-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
>> arch/riscv/include/asm/vdso/gettimeofday.h:24:43: error: meaningless 'inline' on asm outside function
24 | register struct __kernel_old_timeval *tv asm("a0") = _tv;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:25:31: error: meaningless 'inline' on asm outside function
25 | register struct timezone *tz asm("a1") = _tz;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:26:20: error: meaningless 'inline' on asm outside function
26 | register long ret asm("a0");
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:27:19: error: meaningless 'inline' on asm outside function
27 | register long nr asm("a7") = __NR_gettimeofday;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:40:27: error: meaningless 'inline' on asm outside function
40 | register clockid_t clkid asm("a0") = _clkid;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:41:40: error: meaningless 'inline' on asm outside function
41 | register struct __kernel_timespec *ts asm("a1") = _ts;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:42:20: error: meaningless 'inline' on asm outside function
42 | register long ret asm("a0");
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:43:19: error: meaningless 'inline' on asm outside function
43 | register long nr asm("a7") = __NR_clock_gettime;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:56:27: error: meaningless 'inline' on asm outside function
56 | register clockid_t clkid asm("a0") = _clkid;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:57:40: error: meaningless 'inline' on asm outside function
57 | register struct __kernel_timespec *ts asm("a1") = _ts;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:58:20: error: meaningless 'inline' on asm outside function
58 | register long ret asm("a0");
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:59:19: error: meaningless 'inline' on asm outside function
59 | register long nr asm("a7") = __NR_clock_getres;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
12 errors generated.
make[3]: *** [scripts/Makefile.build:207: arch/riscv/kernel/vdso/vgettimeofday.o] Error 1 shuffle=889927436
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
>> arch/riscv/include/asm/vdso/gettimeofday.h:24:43: error: meaningless 'inline' on asm outside function
24 | register struct __kernel_old_timeval *tv asm("a0") = _tv;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:25:31: error: meaningless 'inline' on asm outside function
25 | register struct timezone *tz asm("a1") = _tz;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:26:20: error: meaningless 'inline' on asm outside function
26 | register long ret asm("a0");
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:27:19: error: meaningless 'inline' on asm outside function
27 | register long nr asm("a7") = __NR_gettimeofday;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:40:27: error: meaningless 'inline' on asm outside function
40 | register clockid_t clkid asm("a0") = _clkid;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:41:40: error: meaningless 'inline' on asm outside function
41 | register struct __kernel_timespec *ts asm("a1") = _ts;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:42:20: error: meaningless 'inline' on asm outside function
42 | register long ret asm("a0");
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:43:19: error: meaningless 'inline' on asm outside function
43 | register long nr asm("a7") = __NR_clock_gettime;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:56:27: error: meaningless 'inline' on asm outside function
56 | register clockid_t clkid asm("a0") = _clkid;
| ^
include/linux/compiler_types.h:480:19: note: expanded from macro 'asm'
480 | # define asm(...) asm_inline(__VA_ARGS__)
| ^
include/linux/compiler_types.h:479:29: note: expanded from macro 'asm_inline'
479 | # define asm_inline __asm__ __inline
| ^
In file included from arch/riscv/kernel/vdso/hwprobe.c:8:
In file included from include/vdso/datapage.h:164:
arch/riscv/include/asm/vdso/gettimeofday.h:57:40: error: meaningless 'inline' on asm outside function
57 | register struct __kernel_timespec *ts asm("a1") = _ts;

vim +/inline +24 arch/riscv/include/asm/vdso/gettimeofday.h

ad5d1122b82fbd6 Vincent Chen 2020-06-09 19
ad5d1122b82fbd6 Vincent Chen 2020-06-09 20 static __always_inline
ad5d1122b82fbd6 Vincent Chen 2020-06-09 21 int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
ad5d1122b82fbd6 Vincent Chen 2020-06-09 22 struct timezone *_tz)
ad5d1122b82fbd6 Vincent Chen 2020-06-09 23 {
ad5d1122b82fbd6 Vincent Chen 2020-06-09 @24 register struct __kernel_old_timeval *tv asm("a0") = _tv;
ad5d1122b82fbd6 Vincent Chen 2020-06-09 25 register struct timezone *tz asm("a1") = _tz;
ad5d1122b82fbd6 Vincent Chen 2020-06-09 26 register long ret asm("a0");
ad5d1122b82fbd6 Vincent Chen 2020-06-09 27 register long nr asm("a7") = __NR_gettimeofday;
ad5d1122b82fbd6 Vincent Chen 2020-06-09 28
ad5d1122b82fbd6 Vincent Chen 2020-06-09 29 asm volatile ("ecall\n"
ad5d1122b82fbd6 Vincent Chen 2020-06-09 30 : "=r" (ret)
ad5d1122b82fbd6 Vincent Chen 2020-06-09 31 : "r"(tv), "r"(tz), "r"(nr)
ad5d1122b82fbd6 Vincent Chen 2020-06-09 32 : "memory");
ad5d1122b82fbd6 Vincent Chen 2020-06-09 33
ad5d1122b82fbd6 Vincent Chen 2020-06-09 34 return ret;
ad5d1122b82fbd6 Vincent Chen 2020-06-09 35 }
ad5d1122b82fbd6 Vincent Chen 2020-06-09 36

:::::: The code at line 24 was first introduced by commit
:::::: ad5d1122b82fbd6a816d1b9d26ee01a6dbc2d757 riscv: use vDSO common flow to reduce the latency of the time-related functions

:::::: TO: Vincent Chen <vincent.chen@xxxxxxxxxx>
:::::: CC: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>

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