From: Kignelman OUATTARA <thiery.ouatt...@outscale.com>
in last version (v18.02), we was using no-huge option to
start 2 dpdk instances simultanusly (for testing purpose).
but since v18.05 when we start 2 instances:
- the first dpdk app start normaly
- the 2nd can't start because LOCK_EX option is set in
flock(fd, LOCK_EX | LOCK_NB).
So i did this patch to change LOCK_EX to LOCK_SH if no-huge
option is set.
Signed-off-by: Kignelman OUATTARA <thiery.ouatt...@outscale.com>
---
lib/librte_eal/common/eal_common_fbarray.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/common/eal_common_fbarray.c
b/lib/librte_eal/common/eal_common_fbarray.c
index 019f84c..7a7b9af 100644
--- a/lib/librte_eal/common/eal_common_fbarray.c
+++ b/lib/librte_eal/common/eal_common_fbarray.c
@@ -414,6 +414,7 @@ struct used_mask {
struct used_mask *msk;
void *data = NULL;
int fd = -1;
+ int lock_opt = LOCK_EX;
if (arr == NULL) {
rte_errno = EINVAL;
@@ -436,6 +437,9 @@ struct used_mask {
eal_get_fbarray_path(path, sizeof(path), name);
+ if (internal_config.no_hugetlbfs)
+ lock_opt = LOCK_SH;
+
/*
* Each fbarray is unique to process namespace, i.e. the filename
* depends on process prefix. Try to take out a lock and see if we
@@ -447,7 +451,7 @@ struct used_mask {
path, strerror(errno));
rte_errno = errno;
goto fail;
- } else if (flock(fd, LOCK_EX | LOCK_NB)) {
+ } else if (flock(fd, lock_opt | LOCK_NB)) {
RTE_LOG(DEBUG, EAL, "%s(): couldn't lock %s: %s\n", __func__,
path, strerror(errno));
rte_errno = EBUSY;
--
1.9.1
