diff options
Diffstat (limited to 'include/rdma/ib_verbs.h')
| -rw-r--r-- | include/rdma/ib_verbs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index e9288d0f627e..48f416fabe0c 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -470,6 +470,9 @@ enum ib_port_speed { /** * struct rdma_hw_stats + * @lock - Mutex to protect parallel write access to lifespan and values + * of counters, which are 64bits and not guaranteeed to be written + * atomicaly on 32bits systems. * @timestamp - Used by the core code to track when the last update was * @lifespan - Used by the core code to determine how old the counters * should be before being updated again. Stored in jiffies, defaults @@ -485,6 +488,7 @@ enum ib_port_speed { * filled in by the drivers get_stats routine */ struct rdma_hw_stats { + struct mutex lock; /* Protect lifespan and values[] */ unsigned long timestamp; unsigned long lifespan; const char * const *names; |