diff options
Diffstat (limited to 'arch/loongarch/include/asm/percpu.h')
| -rw-r--r-- | arch/loongarch/include/asm/percpu.h | 44 |
1 files changed, 21 insertions, 23 deletions
diff --git a/arch/loongarch/include/asm/percpu.h b/arch/loongarch/include/asm/percpu.h index 87be9b14e9da..583f2466262f 100644 --- a/arch/loongarch/include/asm/percpu.h +++ b/arch/loongarch/include/asm/percpu.h @@ -13,7 +13,7 @@ * the loading address of main kernel image, but far from where the modules are * loaded. Tell the compiler this fact when using explicit relocs. */ -#if defined(MODULE) && defined(CONFIG_AS_HAS_EXPLICIT_RELOCS) +#if defined(MODULE) && defined(CONFIG_AS_HAS_EXPLICIT_RELOCS) && defined(CONFIG_64BIT) # if __has_attribute(model) # define PER_CPU_ATTRIBUTES __attribute__((model("extreme"))) # else @@ -27,7 +27,7 @@ register unsigned long __my_cpu_offset __asm__("$r21"); static inline void set_my_cpu_offset(unsigned long off) { __my_cpu_offset = off; - csr_write64(off, PERCPU_BASE_KS); + csr_write(off, PERCPU_BASE_KS); } #define __my_cpu_offset \ @@ -36,6 +36,8 @@ static inline void set_my_cpu_offset(unsigned long off) __my_cpu_offset; \ }) +#ifdef CONFIG_CPU_HAS_AMO + #define PERCPU_OP(op, asm_op, c_op) \ static __always_inline unsigned long __percpu_##op(void *ptr, \ unsigned long val, int size) \ @@ -68,25 +70,9 @@ PERCPU_OP(and, and, &) PERCPU_OP(or, or, |) #undef PERCPU_OP -static __always_inline unsigned long __percpu_xchg(void *ptr, unsigned long val, int size) -{ - switch (size) { - case 1: - case 2: - return __xchg_small((volatile void *)ptr, val, size); - - case 4: - return __xchg_asm("amswap.w", (volatile u32 *)ptr, (u32)val); - - case 8: - return __xchg_asm("amswap.d", (volatile u64 *)ptr, (u64)val); +#endif - default: - BUILD_BUG(); - } - - return 0; -} +#ifdef CONFIG_64BIT #define __pcpu_op_1(op) op ".b " #define __pcpu_op_2(op) op ".h " @@ -115,6 +101,10 @@ do { \ : "memory"); \ } while (0) +#endif + +#define __percpu_xchg __arch_xchg + /* this_cpu_cmpxchg */ #define _protect_cmpxchg_local(pcp, o, n) \ ({ \ @@ -135,6 +125,8 @@ do { \ __retval; \ }) +#ifdef CONFIG_CPU_HAS_AMO + #define _percpu_add(pcp, val) \ _pcp_protect(__percpu_add, pcp, val) @@ -146,9 +138,6 @@ do { \ #define _percpu_or(pcp, val) \ _pcp_protect(__percpu_or, pcp, val) -#define _percpu_xchg(pcp, val) ((typeof(pcp)) \ - _pcp_protect(__percpu_xchg, pcp, (unsigned long)(val))) - #define this_cpu_add_4(pcp, val) _percpu_add(pcp, val) #define this_cpu_add_8(pcp, val) _percpu_add(pcp, val) @@ -161,6 +150,10 @@ do { \ #define this_cpu_or_4(pcp, val) _percpu_or(pcp, val) #define this_cpu_or_8(pcp, val) _percpu_or(pcp, val) +#endif + +#ifdef CONFIG_64BIT + #define this_cpu_read_1(pcp) _percpu_read(1, pcp) #define this_cpu_read_2(pcp) _percpu_read(2, pcp) #define this_cpu_read_4(pcp) _percpu_read(4, pcp) @@ -171,6 +164,11 @@ do { \ #define this_cpu_write_4(pcp, val) _percpu_write(4, pcp, val) #define this_cpu_write_8(pcp, val) _percpu_write(8, pcp, val) +#endif + +#define _percpu_xchg(pcp, val) ((typeof(pcp)) \ + _pcp_protect(__percpu_xchg, pcp, (unsigned long)(val))) + #define this_cpu_xchg_1(pcp, val) _percpu_xchg(pcp, val) #define this_cpu_xchg_2(pcp, val) _percpu_xchg(pcp, val) #define this_cpu_xchg_4(pcp, val) _percpu_xchg(pcp, val) |