Allow external libraries and applications to know if hugepages
are enabled.
Signed-off-by: Thomas Monjalon <thomas.monjalon at 6wind.com>
Signed-off-by: Damien Millescamps <damien.millescamps at 6wind.com>
---
lib/librte_eal/common/include/rte_eal.h | 13 ++++++++++++-
lib/librte_eal/linuxapp/eal/eal.c | 4 ++++
2 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/lib/librte_eal/common/include/rte_eal.h
b/lib/librte_eal/common/include/rte_eal.h
index 240530d..58a6f90 100644
--- a/lib/librte_eal/common/include/rte_eal.h
+++ b/lib/librte_eal/common/include/rte_eal.h
@@ -214,7 +214,18 @@ int rte_eal_init(int argc, char **argv);
} \
} while(0)
-
+/**
+ * Whether EAL is using huge pages (disabled by --no-huge option).
+ * The no-huge mode cannot be used with UIO poll-mode drivers like igb/ixgbe.
+ * It is useful for NIC drivers (e.g. librte_pmd_mlx4, librte_pmd_vmxnet3) or
+ * crypto drivers (e.g. librte_crypto_nitrox) provided by third-parties such
+ * as 6WIND.
+ *
+ * @return
+ * Nonzero if hugepages are enabled.
+ */
+int rte_eal_has_hugepages(void);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/librte_eal/linuxapp/eal/eal.c
b/lib/librte_eal/linuxapp/eal/eal.c
index ed0e9b1..52de2b6 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -945,3 +945,7 @@ rte_eal_process_type(void)
return (rte_config.process_type);
}
+int rte_eal_has_hugepages(void)
+{
+ return ! internal_config.no_hugetlbfs;
+}
--
1.7.2.5
