* Re: [PATCH bpf-next 1/2] bpf: add bpf_get_hw_counter kfunc
[not found] <20241023210437.2266063-1-vadfed@meta.com>
@ 2024-10-24 16:13 ` kernel test robot
2024-10-24 16:13 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-10-24 16:13 UTC (permalink / raw)
To: Vadim Fedorenko, Alexei Starovoitov, Daniel Borkmann,
Andrii Nakryiko, Eduard Zingerman, Thomas Gleixner,
Vadim Fedorenko
Cc: llvm, oe-kbuild-all, x86, bpf
Hi Vadim,
kernel test robot noticed the following build errors:
[auto build test ERROR on bpf-next/master]
url: https://github.com/intel-lab-lkp/linux/commits/Vadim-Fedorenko/selftests-bpf-add-selftest-to-check-rdtsc-jit/20241024-050747
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link: https://lore.kernel.org/r/20241023210437.2266063-1-vadfed%40meta.com
patch subject: [PATCH bpf-next 1/2] bpf: add bpf_get_hw_counter kfunc
config: arm64-randconfig-001-20241024 (https://download.01.org/0day-ci/archive/20241024/202410242310.od2UFxiK-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 5886454669c3c9026f7f27eab13509dd0241f2d6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241024/202410242310.od2UFxiK-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410242310.od2UFxiK-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from kernel/bpf/helpers.c:4:
In file included from include/linux/bpf.h:21:
In file included from include/linux/kallsyms.h:13:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from kernel/bpf/helpers.c:26:
>> arch/arm64/include/asm/vdso/gettimeofday.h:70:21: warning: declaration of 'struct vdso_data' will not be visible outside of this function [-Wvisibility]
70 | const struct vdso_data *vd)
| ^
>> arch/arm64/include/asm/vdso/gettimeofday.h:79:20: error: use of undeclared identifier 'VDSO_CLOCKMODE_NONE'
79 | if (clock_mode == VDSO_CLOCKMODE_NONE)
| ^
>> arch/arm64/include/asm/vdso/gettimeofday.h:105:9: error: use of undeclared identifier '_vdso_data'
105 | return _vdso_data;
| ^
kernel/bpf/helpers.c:115:36: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
115 | .arg2_type = ARG_PTR_TO_MAP_VALUE | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:128:36: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
128 | .arg2_type = ARG_PTR_TO_MAP_VALUE | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:539:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
539 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:542:41: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
542 | .arg4_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_ALIGNED,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:567:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
567 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:570:41: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
570 | .arg4_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_ALIGNED,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:583:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
583 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:653:35: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
653 | .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:725:39: warning: bitwise operation between different enumeration types ('enum bpf_return_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
725 | .ret_type = RET_PTR_TO_MEM_OR_BTF_ID | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/bpf/helpers.c:738:39: warning: bitwise operation between different enumeration types ('enum bpf_return_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
738 | .ret_type = RET_PTR_TO_MEM_OR_BTF_ID | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1080:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1080 | .arg4_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/bpf/helpers.c:1641:44: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1641 | .arg2_type = ARG_PTR_TO_BTF_ID_OR_NULL | OBJ_RELEASE,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
kernel/bpf/helpers.c:1746:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1746 | .arg4_type = ARG_PTR_TO_DYNPTR | DYNPTR_TYPE_LOCAL | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~
kernel/bpf/helpers.c:1789:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1789 | .arg3_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1837:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1837 | .arg1_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1839:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1839 | .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1879:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1879 | .arg1_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
21 warnings and 2 errors generated.
vim +/VDSO_CLOCKMODE_NONE +79 arch/arm64/include/asm/vdso/gettimeofday.h
28b1a824a4f44d Vincenzo Frascino 2019-06-21 68
4c5a116ada953b Thomas Gleixner 2020-08-04 69 static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
4c5a116ada953b Thomas Gleixner 2020-08-04 @70 const struct vdso_data *vd)
28b1a824a4f44d Vincenzo Frascino 2019-06-21 71 {
28b1a824a4f44d Vincenzo Frascino 2019-06-21 72 u64 res;
28b1a824a4f44d Vincenzo Frascino 2019-06-21 73
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 74 /*
5e3c6a312a0946 Thomas Gleixner 2020-02-07 75 * Core checks for mode already, so this raced against a concurrent
5e3c6a312a0946 Thomas Gleixner 2020-02-07 76 * update. Return something. Core will do another round and then
5e3c6a312a0946 Thomas Gleixner 2020-02-07 77 * see the mode change and fallback to the syscall.
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 78 */
5e3c6a312a0946 Thomas Gleixner 2020-02-07 @79 if (clock_mode == VDSO_CLOCKMODE_NONE)
5e3c6a312a0946 Thomas Gleixner 2020-02-07 80 return 0;
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 81
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 82 /*
9025cebf12d176 Joey Gouly 2022-08-30 83 * If FEAT_ECV is available, use the self-synchronizing counter.
9025cebf12d176 Joey Gouly 2022-08-30 84 * Otherwise the isb is required to prevent that the counter value
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 85 * is speculated.
27e11a9fe2e2e7 Vincenzo Frascino 2019-06-25 86 */
9025cebf12d176 Joey Gouly 2022-08-30 87 asm volatile(
9025cebf12d176 Joey Gouly 2022-08-30 88 ALTERNATIVE("isb\n"
9025cebf12d176 Joey Gouly 2022-08-30 89 "mrs %0, cntvct_el0",
9025cebf12d176 Joey Gouly 2022-08-30 90 "nop\n"
9025cebf12d176 Joey Gouly 2022-08-30 91 __mrs_s("%0", SYS_CNTVCTSS_EL0),
9025cebf12d176 Joey Gouly 2022-08-30 92 ARM64_HAS_ECV)
9025cebf12d176 Joey Gouly 2022-08-30 93 : "=r" (res)
9025cebf12d176 Joey Gouly 2022-08-30 94 :
9025cebf12d176 Joey Gouly 2022-08-30 95 : "memory");
9025cebf12d176 Joey Gouly 2022-08-30 96
77ec462536a13d Will Deacon 2021-03-18 97 arch_counter_enforce_ordering(res);
28b1a824a4f44d Vincenzo Frascino 2019-06-21 98
28b1a824a4f44d Vincenzo Frascino 2019-06-21 99 return res;
28b1a824a4f44d Vincenzo Frascino 2019-06-21 100 }
28b1a824a4f44d Vincenzo Frascino 2019-06-21 101
28b1a824a4f44d Vincenzo Frascino 2019-06-21 102 static __always_inline
28b1a824a4f44d Vincenzo Frascino 2019-06-21 103 const struct vdso_data *__arch_get_vdso_data(void)
28b1a824a4f44d Vincenzo Frascino 2019-06-21 104 {
28b1a824a4f44d Vincenzo Frascino 2019-06-21 @105 return _vdso_data;
28b1a824a4f44d Vincenzo Frascino 2019-06-21 106 }
28b1a824a4f44d Vincenzo Frascino 2019-06-21 107
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH bpf-next 1/2] bpf: add bpf_get_hw_counter kfunc
[not found] <20241023210437.2266063-1-vadfed@meta.com>
2024-10-24 16:13 ` [PATCH bpf-next 1/2] bpf: add bpf_get_hw_counter kfunc kernel test robot
@ 2024-10-24 16:13 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-10-24 16:13 UTC (permalink / raw)
To: Vadim Fedorenko, Alexei Starovoitov, Daniel Borkmann,
Andrii Nakryiko, Eduard Zingerman, Thomas Gleixner,
Vadim Fedorenko
Cc: llvm, oe-kbuild-all, x86, bpf
Hi Vadim,
kernel test robot noticed the following build errors:
[auto build test ERROR on bpf-next/master]
url: https://github.com/intel-lab-lkp/linux/commits/Vadim-Fedorenko/selftests-bpf-add-selftest-to-check-rdtsc-jit/20241024-050747
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link: https://lore.kernel.org/r/20241023210437.2266063-1-vadfed%40meta.com
patch subject: [PATCH bpf-next 1/2] bpf: add bpf_get_hw_counter kfunc
config: riscv-defconfig (https://download.01.org/0day-ci/archive/20241024/202410242317.RqcJ3H1k-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 5886454669c3c9026f7f27eab13509dd0241f2d6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241024/202410242317.RqcJ3H1k-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410242317.RqcJ3H1k-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from kernel/bpf/helpers.c:4:
In file included from include/linux/bpf.h:21:
In file included from include/linux/kallsyms.h:13:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from kernel/bpf/helpers.c:26:
>> arch/riscv/include/asm/vdso/gettimeofday.h:72:21: warning: declaration of 'struct vdso_data' will not be visible outside of this function [-Wvisibility]
72 | const struct vdso_data *vd)
| ^
>> arch/riscv/include/asm/vdso/gettimeofday.h:84:9: error: use of undeclared identifier '_vdso_data'
84 | return _vdso_data;
| ^
>> arch/riscv/include/asm/vdso/gettimeofday.h:91:9: error: use of undeclared identifier '_timens_data'
91 | return _timens_data;
| ^
kernel/bpf/helpers.c:115:36: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
115 | .arg2_type = ARG_PTR_TO_MAP_VALUE | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:128:36: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
128 | .arg2_type = ARG_PTR_TO_MAP_VALUE | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:539:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
539 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:542:41: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
542 | .arg4_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_ALIGNED,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:567:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
567 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:570:41: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
570 | .arg4_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_ALIGNED,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:583:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
583 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:653:35: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
653 | .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:725:39: warning: bitwise operation between different enumeration types ('enum bpf_return_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
725 | .ret_type = RET_PTR_TO_MEM_OR_BTF_ID | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/bpf/helpers.c:738:39: warning: bitwise operation between different enumeration types ('enum bpf_return_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
738 | .ret_type = RET_PTR_TO_MEM_OR_BTF_ID | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1080:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1080 | .arg4_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/bpf/helpers.c:1641:44: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1641 | .arg2_type = ARG_PTR_TO_BTF_ID_OR_NULL | OBJ_RELEASE,
| ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
kernel/bpf/helpers.c:1746:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1746 | .arg4_type = ARG_PTR_TO_DYNPTR | DYNPTR_TYPE_LOCAL | MEM_UNINIT,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~
kernel/bpf/helpers.c:1789:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1789 | .arg3_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1837:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1837 | .arg1_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1839:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1839 | .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/bpf/helpers.c:1879:33: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1879 | .arg1_type = ARG_PTR_TO_DYNPTR | MEM_RDONLY,
| ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
19 warnings and 2 errors generated.
vim +/_vdso_data +84 arch/riscv/include/asm/vdso/gettimeofday.h
aa5af0aa90bad3 Evan Green 2023-04-07 70
4c5a116ada953b Thomas Gleixner 2020-08-04 71 static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
4c5a116ada953b Thomas Gleixner 2020-08-04 @72 const struct vdso_data *vd)
ad5d1122b82fbd Vincent Chen 2020-06-09 73 {
ad5d1122b82fbd Vincent Chen 2020-06-09 74 /*
ad5d1122b82fbd Vincent Chen 2020-06-09 75 * The purpose of csr_read(CSR_TIME) is to trap the system into
ad5d1122b82fbd Vincent Chen 2020-06-09 76 * M-mode to obtain the value of CSR_TIME. Hence, unlike other
ad5d1122b82fbd Vincent Chen 2020-06-09 77 * architecture, no fence instructions surround the csr_read()
ad5d1122b82fbd Vincent Chen 2020-06-09 78 */
ad5d1122b82fbd Vincent Chen 2020-06-09 79 return csr_read(CSR_TIME);
ad5d1122b82fbd Vincent Chen 2020-06-09 80 }
ad5d1122b82fbd Vincent Chen 2020-06-09 81
ad5d1122b82fbd Vincent Chen 2020-06-09 82 static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
ad5d1122b82fbd Vincent Chen 2020-06-09 83 {
ad5d1122b82fbd Vincent Chen 2020-06-09 @84 return _vdso_data;
ad5d1122b82fbd Vincent Chen 2020-06-09 85 }
ad5d1122b82fbd Vincent Chen 2020-06-09 86
dffe11e280a42c Tong Tiangen 2021-09-01 87 #ifdef CONFIG_TIME_NS
dffe11e280a42c Tong Tiangen 2021-09-01 88 static __always_inline
dffe11e280a42c Tong Tiangen 2021-09-01 89 const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd)
dffe11e280a42c Tong Tiangen 2021-09-01 90 {
dffe11e280a42c Tong Tiangen 2021-09-01 @91 return _timens_data;
dffe11e280a42c Tong Tiangen 2021-09-01 92 }
dffe11e280a42c Tong Tiangen 2021-09-01 93 #endif
ad5d1122b82fbd Vincent Chen 2020-06-09 94 #endif /* !__ASSEMBLY__ */
ad5d1122b82fbd Vincent Chen 2020-06-09 95
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread