diff mbox

[dpdk-dev,4/9] eal: add support for no-shconf in hugepage data file

Message ID 438a4831f1c5bf40f946950ed856dd0d0c841904.1527872626.git.anatoly.burakov@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Burakov, Anatoly June 1, 2018, 5:15 p.m. UTC 
  Do not create a shared hugepage data file if we were asked to
not create any shared files.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---

Notes:
    RFC->v1:
    - Use --no-shconf only

 lib/librte_eal/linuxapp/eal/eal_memory.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index c917de1c2..cb784e1c3 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -521,7 +521,18 @@  static void *
 create_shared_memory(const char *filename, const size_t mem_size)
 {
 	void *retval;
-	int fd = open(filename, O_CREAT | O_RDWR, 0666);
+	int fd;
+
+	/* if no shared files mode is used, create anonymous memory instead */
+	if (internal_config.no_shconf) {
+		retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE,
+				MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+		if (retval == MAP_FAILED)
+			return NULL;
+		return retval;
+	}
+
+	fd = open(filename, O_CREAT | O_RDWR, 0666);
 	if (fd < 0)
 		return NULL;
 	if (ftruncate(fd, mem_size) < 0) {