[v2] test/atomic: fix false failures for 128-bit atomic compare exchange test
Checks
Commit Message
When checking the results of the rte_atomic128_cmp_exchange() function,
current code compares the values of a uint32_t and a uint64_t variable.
If the number of lcores used by the test is large, or the value of the
iteration count N is increased, the variable size mismatch can cause a
false test failure. Modify the comparison to compare uint64_t values.
Fixes: fa3253c534b1 ("test/atomic: add 128-bit atomic compare exchange test")
Cc: phil.yang@arm.com
Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
Tested-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
v2:
- Fixed commit message spelling error
---
app/test/test_atomic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--
2.27.0
@@ -591,7 +591,7 @@ test_atomic(void)
rte_atomic32_clear(&synchro);
iterations = count128.val[0] - count128.val[1];
- if (iterations != 4*N*(rte_lcore_count()-1)) {
+ if (iterations != (uint64_t)4*N*(rte_lcore_count()-1)) {
printf("128-bit compare and swap failed\n");
return -1;
}