maybe somebody want to free hugepages when application exit.
so add this function for application to release hugepages when exit.
Signed-off-by: linhaifeng <haifeng.lin at huawei.com>
---
.../lib/librte_eal/common/include/rte_memory.h | 11 +++++++++
.../lib/librte_eal/linuxapp/eal/eal_memory.c | 27 ++++++++++++++++++++++
2 files changed, 38 insertions(+)
diff --git a/dpdk/dpdk-1.7.0/lib/librte_eal/common/include/rte_memory.h
b/dpdk/dpdk-1.7.0/lib/librte_eal/common/include/rte_memory.h
index 4cf8ea9..7251b6b 100644
--- a/dpdk/dpdk-1.7.0/lib/librte_eal/common/include/rte_memory.h
+++ b/dpdk/dpdk-1.7.0/lib/librte_eal/common/include/rte_memory.h
@@ -172,6 +172,17 @@ unsigned rte_memory_get_nchannel(void);
*/
unsigned rte_memory_get_nrank(void);
+/**
+ * Free all the hugepages.For the application to call when exit.
+ *
+ * @param void
+ *
+ * @return
+ * 0: successfully
+ * negative: error
+ */
+int rte_eal_hugepage_free(void);
+
#ifdef RTE_LIBRTE_XEN_DOM0
/**
* Return the physical address of elt, which is an element of the pool mp.
diff --git a/dpdk/dpdk-1.7.0/lib/librte_eal/linuxapp/eal/eal_memory.c
b/dpdk/dpdk-1.7.0/lib/librte_eal/linuxapp/eal/eal_memory.c
index f2454f4..1ae0e79 100644
--- a/dpdk/dpdk-1.7.0/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/dpdk/dpdk-1.7.0/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -98,6 +98,13 @@
#include "eal_filesystem.h"
#include "eal_hugepages.h"
+struct hugepage_table {
+ struct hugepage_file *hugepg_tbl;
+ unsigned nr_hugefiles;
+};
+
+static struct hugepage_table g_hugepage_table;
+
/**
* @file
* Huge page mapping under linux
@@ -1202,6 +1209,7 @@ rte_eal_hugepage_init(void)
(unsigned)
(used_hp[i].hugepage_sz
/ 0x100000),
j);
+ g_hugepage_table.nr_hugefiles +=
used_hp[i].num_pages[j];
}
}
}
@@ -1237,6 +1245,8 @@ rte_eal_hugepage_init(void)
goto fail;
}
+ g_hugepage_table.hugepg_tbl = hugepage;
+
/* free the temporary hugepage table */
free(tmp_hp);
tmp_hp = NULL;
@@ -1487,6 +1497,23 @@ error:
return -1;
}
+int
+rte_eal_hugepage_free(void)
+{
+ struct hugepage_file *hugepg_tbl = g_hugepage_table.hugepg_tbl;
+ unsigned i;
+ unsigned nr_hugefiles = g_hugepage_table.nr_hugefiles;
+
+ RTE_LOG(INFO, EAL, "unlink %u hugepage files\n", nr_hugefiles);
+
+ for (i = 0; i < nr_hugefiles; i++) {
+ unlink(hugepg_tbl[i].filepath);
+ hugepg_tbl[i].orig_va = NULL;
+ }
+
+ return 0;
+}
+
static int
rte_eal_memdevice_init(void)
{
--
1.8.3.1
