Release 4.17 lib/atomic64_test.c
/*
* Testsuite for atomic64_t functions
*
* Copyright © 2010 Luca Barbieri
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/atomic.h>
#include <linux/module.h>
#ifdef CONFIG_X86
#include <asm/cpufeature.h> /* for boot_cpu_has below */
#endif
#define TEST(bit, op, c_op, val) \
do { \
atomic##bit##_set(&v, v0); \
r = v0; \
atomic##bit##_##op(val, &v); \
r c_op val; \
WARN(atomic##bit##_read(&v) != r, "%Lx != %Lx\n", \
(unsigned long long)atomic##bit##_read(&v), \
(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 TEST_FETCH(bit, op, c_op, val) \
do { \
atomic##bit##_set(&v, v0); \
r = v0; \
r c_op val; \
BUG_ON(atomic##bit##_##op(val, &v) != v0); \
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 FETCH_FAMILY_TEST(bit, op, c_op, val) \
do { \
FAMILY_TEST(TEST_FETCH, 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;
int v1 = 0xdeadbeef;
int onestwos = 0x11112222;
int one = 1;
atomic_t v;
int r;
TEST(, add, +=, onestwos);
TEST(, add, +=, -one);
TEST(, sub, -=, onestwos);
TEST(, sub, -=, -one);
TEST(, or, |=, v1);
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);
FETCH_FAMILY_TEST(, fetch_add, +=, onestwos);
FETCH_FAMILY_TEST(, fetch_add, +=, -one);
FETCH_FAMILY_TEST(, fetch_sub, -=, onestwos);
FETCH_FAMILY_TEST(, fetch_sub, -=, -one);
FETCH_FAMILY_TEST(, fetch_or, |=, v1);
FETCH_FAMILY_TEST(, fetch_and, &=, v1);
FETCH_FAMILY_TEST(, fetch_andnot, &= ~, v1);
FETCH_FAMILY_TEST(, fetch_xor, ^=, v1);
INC_RETURN_FAMILY_TEST(, v0);
DEC_RETURN_FAMILY_TEST(, v0);
XCHG_FAMILY_TEST(, v0, v1);
CMPXCHG_FAMILY_TEST(, v0, v1, onestwos);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Peter Zijlstra | 185 | 74.30% | 2 | 66.67% |
Boqun Feng | 64 | 25.70% | 1 | 33.33% |
Total | 249 | 100.00% | 3 | 100.00% |
#define INIT(c) do { atomic64_set(&v, c); r = c; } while (0)
static __init void test_atomic64(void)
{
long long v0 = 0xaaa31337c001d00dLL;
long long v1 = 0xdeadbeefdeafcafeLL;
long long v2 = 0xfaceabadf00df001LL;
long long v3 = 0x8000000000000000LL;
long long onestwos = 0x1111111122222222LL;
long long one = 1LL;
int r_int;
atomic64_t v = ATOMIC64_INIT(v0);
long long r = v0;
BUG_ON(v.counter != r);
atomic64_set(&v, v1);
r = v1;
BUG_ON(v.counter != r);
BUG_ON(atomic64_read(&v) != r);
TEST(64, add, +=, onestwos);
TEST(64, add, +=, -one);
TEST(64, sub, -=, onestwos);
TEST(64, sub, -=, -one);
TEST(64, or, |=, v1);
TEST(64, and, &=, v1);
TEST(64, xor, ^=, v1);
TEST(64, andnot, &= ~, v1);
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);
FETCH_FAMILY_TEST(64, fetch_add, +=, onestwos);
FETCH_FAMILY_TEST(64, fetch_add, +=, -one);
FETCH_FAMILY_TEST(64, fetch_sub, -=, onestwos);
FETCH_FAMILY_TEST(64, fetch_sub, -=, -one);
FETCH_FAMILY_TEST(64, fetch_or, |=, v1);
FETCH_FAMILY_TEST(64, fetch_and, &=, v1);
FETCH_FAMILY_TEST(64, fetch_andnot, &= ~, v1);
FETCH_FAMILY_TEST(64, fetch_xor, ^=, v1);
INIT(v0);
atomic64_inc(&v);
r += one;
BUG_ON(v.counter != r);
INIT(v0);
atomic64_dec(&v);
r -= one;
BUG_ON(v.counter != r);
INC_RETURN_FAMILY_TEST(64, v0);
DEC_RETURN_FAMILY_TEST(64, v0);
XCHG_FAMILY_TEST(64, v0, v1);
CMPXCHG_FAMILY_TEST(64, v0, v1, v2);
INIT(v0);
BUG_ON(atomic64_add_unless(&v, one, v0));
BUG_ON(v.counter != r);
INIT(v0);
BUG_ON(!atomic64_add_unless(&v, one, v1));
r += one;
BUG_ON(v.counter != r);
INIT(onestwos);
BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
r -= one;
BUG_ON(v.counter != r);
INIT(0);
BUG_ON(atomic64_dec_if_positive(&v) != -one);
BUG_ON(v.counter != r);
INIT(-one);
BUG_ON(atomic64_dec_if_positive(&v) != (-one - one));
BUG_ON(v.counter != r);
INIT(onestwos);
BUG_ON(!atomic64_inc_not_zero(&v));
r += one;
BUG_ON(v.counter != r);
INIT(0);
BUG_ON(atomic64_inc_not_zero(&v));
BUG_ON(v.counter != r);
INIT(-one);
BUG_ON(!atomic64_inc_not_zero(&v));
r += one;
BUG_ON(v.counter != r);
/* Confirm the return value fits in an int, even if the value doesn't */
INIT(v3);
r_int = atomic64_inc_not_zero(&v);
BUG_ON(!r_int);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Luca Barbieri | 437 | 66.01% | 3 | 42.86% |
Peter Zijlstra | 161 | 24.32% | 2 | 28.57% |
Boqun Feng | 35 | 5.29% | 1 | 14.29% |
Michael Ellerman | 29 | 4.38% | 1 | 14.29% |
Total | 662 | 100.00% | 7 | 100.00% |
static __init int test_atomics_init(void)
{
test_atomic();
test_atomic64();
#ifdef CONFIG_X86
pr_info("passed for %s platform %s CX8 and %s SSE\n",
#ifdef CONFIG_X86_64
"x86-64",
#elif defined(CONFIG_X86_CMPXCHG64)
"i586+",
#else
"i386+",
#endif
boot_cpu_has(X86_FEATURE_CX8) ? "with" : "without",
boot_cpu_has(X86_FEATURE_XMM) ? "with" : "without");
#else
pr_info("passed\n");
#endif
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Luca Barbieri | 44 | 61.11% | 1 | 20.00% |
Peter Zijlstra | 13 | 18.06% | 1 | 20.00% |
H. Peter Anvin | 10 | 13.89% | 1 | 20.00% |
Fabian Frederick | 4 | 5.56% | 1 | 20.00% |
Geert Uytterhoeven | 1 | 1.39% | 1 | 20.00% |
Total | 72 | 100.00% | 5 | 100.00% |
static __exit void test_atomics_exit(void) {}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Geert Uytterhoeven | 8 | 100.00% | 1 | 100.00% |
Total | 8 | 100.00% | 1 | 100.00% |
module_init(test_atomics_init);
module_exit(test_atomics_exit);
MODULE_LICENSE("GPL");
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Luca Barbieri | 497 | 41.56% | 3 | 20.00% |
Peter Zijlstra | 401 | 33.53% | 2 | 13.33% |
Boqun Feng | 208 | 17.39% | 1 | 6.67% |
Michael Ellerman | 29 | 2.42% | 1 | 6.67% |
Geert Uytterhoeven | 24 | 2.01% | 1 | 6.67% |
Fabian Frederick | 11 | 0.92% | 1 | 6.67% |
H. Peter Anvin | 10 | 0.84% | 1 | 6.67% |
Andi Kleen | 8 | 0.67% | 1 | 6.67% |
Paul Gortmaker | 3 | 0.25% | 1 | 6.67% |
Peter Hüwe | 3 | 0.25% | 1 | 6.67% |
Borislav Petkov | 1 | 0.08% | 1 | 6.67% |
Arun Sharma | 1 | 0.08% | 1 | 6.67% |
Total | 1196 | 100.00% | 15 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.