diff options
Diffstat (limited to 'lib/atomic64_test.c')
| -rw-r--r-- | lib/atomic64_test.c | 124 |
1 files changed, 83 insertions, 41 deletions
diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c index 83c33a5bcffb..d62de8bf022d 100644 --- a/lib/atomic64_test.c +++ b/lib/atomic64_test.c @@ -16,6 +16,10 @@ #include <linux/kernel.h> #include <linux/atomic.h> +#ifdef CONFIG_X86 +#include <asm/processor.h> /* for boot_cpu_has below */ +#endif + #define TEST(bit, op, c_op, val) \ do { \ atomic##bit##_set(&v, v0); \ @@ -27,6 +31,65 @@ do { \ (unsigned long long)r); \ } while (0) +/* + * Test for a atomic operation family, + * @test should be a macro accepting parameters (bit, op, ...) + */ + +#define FAMILY_TEST(test, bit, op, args...) \ +do { \ + test(bit, op, ##args); \ + test(bit, op##_acquire, ##args); \ + test(bit, op##_release, ##args); \ + test(bit, op##_relaxed, ##args); \ +} while (0) + +#define TEST_RETURN(bit, op, c_op, val) \ +do { \ + atomic##bit##_set(&v, v0); \ + r = v0; \ + r c_op val; \ + BUG_ON(atomic##bit##_##op(val, &v) != r); \ + BUG_ON(atomic##bit##_read(&v) != r); \ +} while (0) + +#define RETURN_FAMILY_TEST(bit, op, c_op, val) \ +do { \ + FAMILY_TEST(TEST_RETURN, bit, op, c_op, val); \ +} while (0) + +#define TEST_ARGS(bit, op, init, ret, expect, args...) \ +do { \ + atomic##bit##_set(&v, init); \ + BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \ + BUG_ON(atomic##bit##_read(&v) != expect); \ +} while (0) + +#define XCHG_FAMILY_TEST(bit, init, new) \ +do { \ + FAMILY_TEST(TEST_ARGS, bit, xchg, init, init, new, new); \ +} while (0) + +#define CMPXCHG_FAMILY_TEST(bit, init, new, wrong) \ +do { \ + FAMILY_TEST(TEST_ARGS, bit, cmpxchg, \ + init, init, new, init, new); \ + FAMILY_TEST(TEST_ARGS, bit, cmpxchg, \ + init, init, init, wrong, new); \ +} while (0) + +#define INC_RETURN_FAMILY_TEST(bit, i) \ +do { \ + FAMILY_TEST(TEST_ARGS, bit, inc_return, \ + i, (i) + one, (i) + one); \ +} while (0) + +#define DEC_RETURN_FAMILY_TEST(bit, i) \ +do { \ + FAMILY_TEST(TEST_ARGS, bit, dec_return, \ + i, (i) - one, (i) - one); \ +} while (0) + static __init void test_atomic(void) { int v0 = 0xaaa31337; @@ -45,6 +108,18 @@ static __init void test_atomic(void) TEST(, and, &=, v1); TEST(, xor, ^=, v1); TEST(, andnot, &= ~, v1); + + RETURN_FAMILY_TEST(, add_return, +=, onestwos); + RETURN_FAMILY_TEST(, add_return, +=, -one); + RETURN_FAMILY_TEST(, sub_return, -=, onestwos); + RETURN_FAMILY_TEST(, sub_return, -=, -one); + + INC_RETURN_FAMILY_TEST(, v0); + DEC_RETURN_FAMILY_TEST(, v0); + + XCHG_FAMILY_TEST(, v0, v1); + CMPXCHG_FAMILY_TEST(, v0, v1, onestwos); + } #define INIT(c) do { atomic64_set(&v, c); r = c; } while (0) @@ -74,25 +149,10 @@ static __init void test_atomic64(void) TEST(64, xor, ^=, v1); TEST(64, andnot, &= ~, v1); - INIT(v0); - r += onestwos; - BUG_ON(atomic64_add_return(onestwos, &v) != r); - BUG_ON(v.counter != r); - - INIT(v0); - r += -one; - BUG_ON(atomic64_add_return(-one, &v) != r); - BUG_ON(v.counter != r); - - INIT(v0); - r -= onestwos; - BUG_ON(atomic64_sub_return(onestwos, &v) != r); - BUG_ON(v.counter != r); - - INIT(v0); - r -= -one; - BUG_ON(atomic64_sub_return(-one, &v) != r); - BUG_ON(v.counter != r); + RETURN_FAMILY_TEST(64, add_return, +=, onestwos); + RETURN_FAMILY_TEST(64, add_return, +=, -one); + RETURN_FAMILY_TEST(64, sub_return, -=, onestwos); + RETURN_FAMILY_TEST(64, sub_return, -=, -one); INIT(v0); atomic64_inc(&v); @@ -100,33 +160,15 @@ static __init void test_atomic64(void) BUG_ON(v.counter != r); INIT(v0); - r += one; - BUG_ON(atomic64_inc_return(&v) != r); - BUG_ON(v.counter != r); - - INIT(v0); atomic64_dec(&v); r -= one; BUG_ON(v.counter != r); - INIT(v0); - r -= one; - BUG_ON(atomic64_dec_return(&v) != r); - BUG_ON(v.counter != r); + INC_RETURN_FAMILY_TEST(64, v0); + DEC_RETURN_FAMILY_TEST(64, v0); - INIT(v0); - BUG_ON(atomic64_xchg(&v, v1) != v0); - r = v1; - BUG_ON(v.counter != r); - - INIT(v0); - BUG_ON(atomic64_cmpxchg(&v, v0, v1) != v0); - r = v1; - BUG_ON(v.counter != r); - - INIT(v0); - BUG_ON(atomic64_cmpxchg(&v, v2, v1) != v0); - BUG_ON(v.counter != r); + XCHG_FAMILY_TEST(64, v0, v1); + CMPXCHG_FAMILY_TEST(64, v0, v1, v2); INIT(v0); BUG_ON(atomic64_add_unless(&v, one, v0)); |