[PATCH v2] eal/arm: replace RTE_BUILD_BUG on non-constant

[Daniel Gregory <daniel.gregory@bytedance.com>]

The ARM implementation of rte_pause uses RTE_BUILD_BUG_ON to check
memorder, which is not constant. This causes compile errors when it is
enabled with RTE_ARM_USE_WFE. eg.

../lib/eal/arm/include/rte_pause_64.h: In function ‘rte_wait_until_equal_16’:
../lib/eal/include/rte_common.h:530:56: error: expression in static assertion is not constant
  530 | #define RTE_BUILD_BUG_ON(condition) do { static_assert(!(condition), #condition); } while (0)
      |                                                        ^~~~~~~~~~~~
../lib/eal/arm/include/rte_pause_64.h:156:9: note: in expansion of macro ‘RTE_BUILD_BUG_ON’
  156 |         RTE_BUILD_BUG_ON(memorder != rte_memory_order_acquire &&
      |         ^~~~~~~~~~~~~~~~

Fix the compile errors by replacing the check with an assert, like in
the generic implementation (lib/eal/include/generic/rte_pause.h).

Fixes: 875f350924b8 ("eal: add a new helper for wait until scheme")

Signed-off-by: Daniel Gregory <daniel.gregory@bytedance.com>
---
Cc: feifei.wang2@arm.com
---
 lib/eal/arm/include/rte_pause_64.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/eal/arm/include/rte_pause_64.h b/lib/eal/arm/include/rte_pause_64.h
index 5cb8b59056..852660091a 100644
--- a/lib/eal/arm/include/rte_pause_64.h
+++ b/lib/eal/arm/include/rte_pause_64.h
@@ -10,6 +10,8 @@
 extern "C" {
 #endif
 
+#include <assert.h>
+
 #include <rte_common.h>
 
 #ifdef RTE_ARM_USE_WFE
@@ -153,7 +155,7 @@ rte_wait_until_equal_16(volatile uint16_t *addr, uint16_t expected,
 {
 	uint16_t value;
 
-	RTE_BUILD_BUG_ON(memorder != rte_memory_order_acquire &&
+	assert(memorder != rte_memory_order_acquire &&
 		memorder != rte_memory_order_relaxed);
 
 	__RTE_ARM_LOAD_EXC_16(addr, value, memorder)
@@ -172,7 +174,7 @@ rte_wait_until_equal_32(volatile uint32_t *addr, uint32_t expected,
 {
 	uint32_t value;
 
-	RTE_BUILD_BUG_ON(memorder != rte_memory_order_acquire &&
+	assert(memorder != rte_memory_order_acquire &&
 		memorder != rte_memory_order_relaxed);
 
 	__RTE_ARM_LOAD_EXC_32(addr, value, memorder)
@@ -191,7 +193,7 @@ rte_wait_until_equal_64(volatile uint64_t *addr, uint64_t expected,
 {
 	uint64_t value;
 
-	RTE_BUILD_BUG_ON(memorder != rte_memory_order_acquire &&
+	assert(memorder != rte_memory_order_acquire &&
 		memorder != rte_memory_order_relaxed);
 
 	__RTE_ARM_LOAD_EXC_64(addr, value, memorder)
-- 
2.39.2