[PATCH v2] eal/linux: fix fbarray name with multiple secondary processes

[Congjie Zhou]

add the tsc into the name.

Suggested-by: Stephen Hemminger <stephen at networkplumber.org>
Signed-off-by: Congjie Zhou <zcjie0802 at qq.com>
---

When multiple secondary processes run in different containers, names
identified by PIDs are not unique due to the pid namespace. 
So Add tsc to redefine a unique name.

v1: use monotonic time to redefine the name
v2: use tsc to redefine the name

 lib/eal/linux/eal_memalloc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/eal/linux/eal_memalloc.c b/lib/eal/linux/eal_memalloc.c
index e354efc..367d401 100644
--- a/lib/eal/linux/eal_memalloc.c
+++ b/lib/eal/linux/eal_memalloc.c
@@ -16,6 +16,7 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <setjmp.h>
+#include <inttypes.h>
 #ifdef F_ADD_SEALS /* if file sealing is supported, so is memfd */
 #include <linux/memfd.h>
 #define MEMFD_SUPPORTED
@@ -1447,8 +1448,8 @@ secondary_msl_create_walk(const struct rte_memseg_list *msl,
 	local_msl = &local_memsegs[msl_idx];
 
 	/* create distinct fbarrays for each secondary */
-	snprintf(name, RTE_FBARRAY_NAME_LEN, "%s_%i",
-		primary_msl->memseg_arr.name, getpid());
+	snprintf(name, RTE_FBARRAY_NAME_LEN, "%s_%i_%"PRIx64,
+		primary_msl->memseg_arr.name, getpid(), rte_get_tsc_cycles());
 
 	ret = rte_fbarray_init(&local_msl->memseg_arr, name,
 		primary_msl->memseg_arr.len,
-- 
2.34.1