diff options
| author | Bill Fischofer <bill.fischofer@linaro.org> | 2015-09-03 10:16:39 -0500 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2015-09-03 19:29:34 +0300 |
| commit | 5cdd039a6bcecae79d1fad0f2b4d52ad43c8e6d5 (patch) | |
| tree | 0a00fe4486ea8cd4f9f0a314e4e9e8e850cc8257 /platform/linux-generic/include/odp_queue_internal.h | |
| parent | 9c3fcc0e5c11cf8117672f63a346b80a66d72103 (diff) | |
linux-generic: schedule: fix race condition in ordered locks
Correct race condition that arises due to attempt to permit ordered locks
to be reusable. For now, ordered locks can only be used once per scheduled
event.
Signed-off-by: Bill Fischofer <bill.fischofer@linaro.org>
Reviewed-and-Tested-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Diffstat (limited to 'platform/linux-generic/include/odp_queue_internal.h')
| -rw-r--r-- | platform/linux-generic/include/odp_queue_internal.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/platform/linux-generic/include/odp_queue_internal.h b/platform/linux-generic/include/odp_queue_internal.h index 48576bc..0f30965 100644 --- a/platform/linux-generic/include/odp_queue_internal.h +++ b/platform/linux-generic/include/odp_queue_internal.h @@ -193,8 +193,12 @@ static inline void reorder_enq(queue_entry_t *queue, static inline void order_release(queue_entry_t *origin_qe, int count) { + uint64_t sync = odp_atomic_load_u64(&origin_qe->s.sync_out); + origin_qe->s.order_out += count; - odp_atomic_fetch_add_u64(&origin_qe->s.sync_out, count); + if (sync < origin_qe->s.order_out) + odp_atomic_fetch_add_u64(&origin_qe->s.sync_out, + origin_qe->s.order_out - sync); } static inline int reorder_deq(queue_entry_t *queue, |