xdp: Fix graze->grace type-o in cpumap comments

Simple spelling fix.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20191219061006.21980-4-bjorn.topel@gmail.com

diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index 04c8eb11cd90bac6b6a9d91942d3df8c54a96306..f9deed659798e7417472b81a372a877cbdd67736 100644 (file)
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c
@@ -401,7 +401,7 @@ static void __cpu_map_entry_free(struct rcu_head *rcu)
        struct bpf_cpu_map_entry *rcpu;
 
        /* This cpu_map_entry have been disconnected from map and one
-        * RCU graze-period have elapsed.  Thus, XDP cannot queue any
+        * RCU grace-period have elapsed.  Thus, XDP cannot queue any
         * new packets and cannot change/set flush_needed that can
         * find this entry.
         */
@@ -428,7 +428,7 @@ static void __cpu_map_entry_free(struct rcu_head *rcu)
  * percpu bulkq to queue.  Due to caller map_delete_elem() disable
  * preemption, cannot call kthread_stop() to make sure queue is empty.
  * Instead a work_queue is started for stopping kthread,
- * cpu_map_kthread_stop, which waits for an RCU graze period before
+ * cpu_map_kthread_stop, which waits for an RCU grace period before
  * stopping kthread, emptying the queue.
  */
 static void __cpu_map_entry_replace(struct bpf_cpu_map *cmap,
@@ -523,7 +523,7 @@ static void cpu_map_free(struct bpf_map *map)
                if (!rcpu)
                        continue;
 
-               /* bq flush and cleanup happens after RCU graze-period */
+               /* bq flush and cleanup happens after RCU grace-period */
                __cpu_map_entry_replace(cmap, i, NULL); /* call_rcu */
        }
        free_percpu(cmap->flush_list);