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Tests: Add test for byte/short atomics on addresses which are not word-aligned
[userspace-rcu.git]
/
tests
/
unit
/
test_uatomic.c
diff --git
a/tests/unit/test_uatomic.c
b/tests/unit/test_uatomic.c
index 12e0266023301c8f7e8d9239b757bc37082c01c8..d9c70e0ac912747d5a68fcf7ee90872b0e25a3e8 100644
(file)
--- a/
tests/unit/test_uatomic.c
+++ b/
tests/unit/test_uatomic.c
@@
-9,14
+9,18
@@
#define NR_TESTS 17
#define NR_TESTS 17
+#define BYTE_PER_LONG (sizeof(unsigned long) / sizeof(unsigned char))
+#define SHORT_PER_LONG (sizeof(unsigned long) / sizeof(unsigned short))
+#define INT_PER_LONG (sizeof(unsigned long) / sizeof(unsigned int))
+
struct testvals {
#ifdef UATOMIC_HAS_ATOMIC_BYTE
struct testvals {
#ifdef UATOMIC_HAS_ATOMIC_BYTE
- unsigned char c;
+ unsigned char c
[BYTE_PER_LONG]
;
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
- unsigned short s;
+ unsigned short s
[SHORT_PER_LONG]
;
#endif
#endif
- unsigned int i;
+ unsigned int i
[INT_PER_LONG]
;
unsigned long l;
};
unsigned long l;
};
@@
-75,25
+79,36
@@
do { \
int main(void)
{
int main(void)
{
- int nr_run = 2;
+ int nr_run = INT_PER_LONG + 1;
+ unsigned long i;
+
#ifdef UATOMIC_HAS_ATOMIC_BYTE
#ifdef UATOMIC_HAS_ATOMIC_BYTE
- nr_run +=
1
;
+ nr_run +=
BYTE_PER_LONG
;
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
- nr_run +=
1
;
+ nr_run +=
SHORT_PER_LONG
;
#endif
plan_tests(nr_run * NR_TESTS);
#ifdef UATOMIC_HAS_ATOMIC_BYTE
#endif
plan_tests(nr_run * NR_TESTS);
#ifdef UATOMIC_HAS_ATOMIC_BYTE
- diag("Test atomic ops on byte");
- do_test(&vals.c);
+ for (i = 0; i < BYTE_PER_LONG; i++) {
+ diag("Test atomic ops on byte with %lu byte offset from long alignment",
+ i);
+ do_test(&vals.c[i]);
+ }
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
- diag("Test atomic ops on short");
- do_test(&vals.s);
+ for (i = 0; i < SHORT_PER_LONG; i++) {
+ diag("Test atomic ops on short with %lu byte offset from long alignment",
+ i * sizeof(unsigned short));
+ do_test(&vals.s[i]);
+ }
#endif
#endif
- diag("Test atomic ops on int");
- do_test(&vals.i);
+ for (i = 0; i < INT_PER_LONG; i++) {
+ diag("Test atomic ops on int with %lu byte offset from long alignment",
+ i * sizeof(unsigned int));
+ do_test(&vals.i[i]);
+ }
diag("Test atomic ops on long");
do_test(&vals.l);
diag("Test atomic ops on long");
do_test(&vals.l);
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