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authorDave Wallace <dwallacelf@gmail.com>2021-05-27 19:44:50 -0400
committerFlorin Coras <florin.coras@gmail.com>2021-05-28 16:08:32 +0000
commitf5d9237c5699a6c3e403f09d53ec7d154322823c (patch)
tree71e86d19fe1216e553c57a00ef4df132ebec26c1 /src/svm
parent88b2269a45c91e8378a1fd652f28aa39926a7a6a (diff)
svm: fix inadequate atomic load for chunk mgr
- Fixes intermittent LDP cut thru iperf3 test failure on AARCH64 Type: fix Change-Id: Id21a078d642e03d974bacacd1f4d0faa42fb6652 Signed-off-by: Dave Wallace <dwallacelf@gmail.com> (cherry picked from commit 5c520919e838bcb645ddd879641d54c620740989)
Diffstat (limited to 'src/svm')
-rw-r--r--src/svm/fifo_segment.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/svm/fifo_segment.c b/src/svm/fifo_segment.c
index d8b3b259038..cb1f08a7e9f 100644
--- a/src/svm/fifo_segment.c
+++ b/src/svm/fifo_segment.c
@@ -154,7 +154,7 @@ fss_chunk_free_list_push (fifo_segment_header_t *fsh,
csp = fs_chunk_sptr (fsh, c);
ASSERT (csp <= FS_CL_HEAD_MASK);
- old_head = clib_atomic_load_relax_n (&fss->free_chunks[fl_index]);
+ old_head = clib_atomic_load_acq_n (&fss->free_chunks[fl_index]);
do
{
@@ -174,7 +174,7 @@ fss_chunk_free_list_push_list (fifo_segment_header_t *fsh,
headsp = fs_chunk_sptr (fsh, head);
ASSERT (headsp <= FS_CL_HEAD_MASK);
- old_head = clib_atomic_load_relax_n (&fss->free_chunks[fl_index]);
+ old_head = clib_atomic_load_acq_n (&fss->free_chunks[fl_index]);
do
{
@@ -194,7 +194,7 @@ fss_chunk_free_list_pop (fifo_segment_header_t *fsh, fifo_segment_slice_t *fss,
ASSERT (fss_chunk_fl_index_is_valid (fss, fl_index));
- old_head = clib_atomic_load_relax_n (&fss->free_chunks[fl_index]);
+ old_head = clib_atomic_load_acq_n (&fss->free_chunks[fl_index]);
/* Lock-free stacks are affected by ABA if a side allocates a chunk and
* shortly thereafter frees it. To circumvent that, reuse the upper bits