Add macro to mark a variable to be mostly read only and place it in a
separate section.
Signed-off-by: Pavan Nikhilesh <pbhagavat...@caviumnetworks.com>
---
Group together mostly read only data to avoid cacheline bouncing, also
useful for auditing purposes.
lib/librte_eal/common/include/rte_common.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_common.h
b/lib/librte_eal/common/include/rte_common.h
index 6c5bc5a76..f2ff2e9e6 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -114,6 +114,11 @@ static void __attribute__((constructor(prio), used))
func(void)
*/
#define __rte_noinline __attribute__((noinline))
+/**
+ * Mark a variable to be mostly read only and place it in a separate section.
+ */
+#define __rte_read_mostly __attribute__((__section__(".read_mostly")))
+
/*********** Macros for pointer arithmetic ********/
/**
--
2.17.0
