While clang uses __attribute__((address_space(1))) both for defining arena pointers and arena globals, GCC requires different syntax for both. While __arena covers the first use case, introduce __arena_global to cover the second one. Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx> --- .../testing/selftests/bpf/bpf_arena_common.h | 2 + .../selftests/bpf/progs/arena_atomics.c | 67 +++++++++---------- 2 files changed, 32 insertions(+), 37 deletions(-) diff --git a/tools/testing/selftests/bpf/bpf_arena_common.h b/tools/testing/selftests/bpf/bpf_arena_common.h index 567491f3e1b5..68a51dcc0669 100644 --- a/tools/testing/selftests/bpf/bpf_arena_common.h +++ b/tools/testing/selftests/bpf/bpf_arena_common.h @@ -34,10 +34,12 @@ #if defined(__BPF_FEATURE_ADDR_SPACE_CAST) && !defined(BPF_ARENA_FORCE_ASM) #define __arena __attribute__((address_space(1))) +#define __arena_global __attribute__((address_space(1))) #define cast_kern(ptr) /* nop for bpf prog. emitted by LLVM */ #define cast_user(ptr) /* nop for bpf prog. emitted by LLVM */ #else #define __arena +#define __arena_global SEC(".addr_space.1") #define cast_kern(ptr) bpf_addr_space_cast(ptr, 0, 1) #define cast_user(ptr) bpf_addr_space_cast(ptr, 1, 0) #endif diff --git a/tools/testing/selftests/bpf/progs/arena_atomics.c b/tools/testing/selftests/bpf/progs/arena_atomics.c index 55f10563208d..77a4dfa9cdf9 100644 --- a/tools/testing/selftests/bpf/progs/arena_atomics.c +++ b/tools/testing/selftests/bpf/progs/arena_atomics.c @@ -25,20 +25,13 @@ bool skip_tests = true; __u32 pid = 0; -#undef __arena -#if defined(__BPF_FEATURE_ADDR_SPACE_CAST) -#define __arena __attribute__((address_space(1))) -#else -#define __arena SEC(".addr_space.1") -#endif - -__u64 __arena add64_value = 1; -__u64 __arena add64_result = 0; -__u32 __arena add32_value = 1; -__u32 __arena add32_result = 0; -__u64 __arena add_stack_value_copy = 0; -__u64 __arena add_stack_result = 0; -__u64 __arena add_noreturn_value = 1; +__u64 __arena_global add64_value = 1; +__u64 __arena_global add64_result = 0; +__u32 __arena_global add32_value = 1; +__u32 __arena_global add32_result = 0; +__u64 __arena_global add_stack_value_copy = 0; +__u64 __arena_global add_stack_result = 0; +__u64 __arena_global add_noreturn_value = 1; SEC("raw_tp/sys_enter") int add(const void *ctx) @@ -58,13 +51,13 @@ int add(const void *ctx) return 0; } -__s64 __arena sub64_value = 1; -__s64 __arena sub64_result = 0; -__s32 __arena sub32_value = 1; -__s32 __arena sub32_result = 0; -__s64 __arena sub_stack_value_copy = 0; -__s64 __arena sub_stack_result = 0; -__s64 __arena sub_noreturn_value = 1; +__s64 __arena_global sub64_value = 1; +__s64 __arena_global sub64_result = 0; +__s32 __arena_global sub32_value = 1; +__s32 __arena_global sub32_result = 0; +__s64 __arena_global sub_stack_value_copy = 0; +__s64 __arena_global sub_stack_result = 0; +__s64 __arena_global sub_noreturn_value = 1; SEC("raw_tp/sys_enter") int sub(const void *ctx) @@ -84,8 +77,8 @@ int sub(const void *ctx) return 0; } -__u64 __arena and64_value = (0x110ull << 32); -__u32 __arena and32_value = 0x110; +__u64 __arena_global and64_value = (0x110ull << 32); +__u32 __arena_global and32_value = 0x110; SEC("raw_tp/sys_enter") int and(const void *ctx) @@ -101,8 +94,8 @@ int and(const void *ctx) return 0; } -__u32 __arena or32_value = 0x110; -__u64 __arena or64_value = (0x110ull << 32); +__u32 __arena_global or32_value = 0x110; +__u64 __arena_global or64_value = (0x110ull << 32); SEC("raw_tp/sys_enter") int or(const void *ctx) @@ -117,8 +110,8 @@ int or(const void *ctx) return 0; } -__u64 __arena xor64_value = (0x110ull << 32); -__u32 __arena xor32_value = 0x110; +__u64 __arena_global xor64_value = (0x110ull << 32); +__u32 __arena_global xor32_value = 0x110; SEC("raw_tp/sys_enter") int xor(const void *ctx) @@ -133,12 +126,12 @@ int xor(const void *ctx) return 0; } -__u32 __arena cmpxchg32_value = 1; -__u32 __arena cmpxchg32_result_fail = 0; -__u32 __arena cmpxchg32_result_succeed = 0; -__u64 __arena cmpxchg64_value = 1; -__u64 __arena cmpxchg64_result_fail = 0; -__u64 __arena cmpxchg64_result_succeed = 0; +__u32 __arena_global cmpxchg32_value = 1; +__u32 __arena_global cmpxchg32_result_fail = 0; +__u32 __arena_global cmpxchg32_result_succeed = 0; +__u64 __arena_global cmpxchg64_value = 1; +__u64 __arena_global cmpxchg64_result_fail = 0; +__u64 __arena_global cmpxchg64_result_succeed = 0; SEC("raw_tp/sys_enter") int cmpxchg(const void *ctx) @@ -156,10 +149,10 @@ int cmpxchg(const void *ctx) return 0; } -__u64 __arena xchg64_value = 1; -__u64 __arena xchg64_result = 0; -__u32 __arena xchg32_value = 1; -__u32 __arena xchg32_result = 0; +__u64 __arena_global xchg64_value = 1; +__u64 __arena_global xchg64_result = 0; +__u32 __arena_global xchg32_value = 1; +__u32 __arena_global xchg32_result = 0; SEC("raw_tp/sys_enter") int xchg(const void *ctx) -- 2.45.2