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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-10-12 16:36:08 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-10-12 16:36:08 +0800 |
| commit | a522b7ad8e66fd9021d354844c1c6bd7893bde6f (patch) | |
| tree | 07f59ad5e94802281faa7fe6540f1f1f76594063 /arch/loongarch/include | |
| parent | 4b2edd38282a42742d8f2039767fa4f1919330f0 (diff) | |
| download | linux-a522b7ad8e66fd9021d354844c1c6bd7893bde6f.tar.bz2 | |
LoongArch: Do not create sysfs control file for io master CPUs
Now io master CPUs are not hotpluggable on LoongArch, but in the current
code only /sys/devices/system/cpu/cpu0/online is not created. Let us set
the hotpluggable field of all the io master CPUs as 0, then prevent to
create sysfs control file for all the io master CPUs which confuses some
user space tools. This is similar with commit 9cce844abf07 ("MIPS: CPU#0
is not hotpluggable").
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include')
| -rw-r--r-- | arch/loongarch/include/asm/bootinfo.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/bootinfo.h b/arch/loongarch/include/asm/bootinfo.h index 8e5881bc5ad1..ed0910e8b856 100644 --- a/arch/loongarch/include/asm/bootinfo.h +++ b/arch/loongarch/include/asm/bootinfo.h @@ -40,4 +40,9 @@ extern unsigned long fw_arg0, fw_arg1, fw_arg2; extern struct loongson_board_info b_info; extern struct loongson_system_configuration loongson_sysconf; +static inline bool io_master(int cpu) +{ + return test_bit(cpu, &loongson_sysconf.cores_io_master); +} + #endif /* _ASM_BOOTINFO_H */ |