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authorBart Van Assche <bart.vanassche@sandisk.com>2017-02-14 10:56:32 -0800
committerDoug Ledford <dledford@redhat.com>2017-02-19 09:51:53 -0500
commit93c76dbb749eb0c791c2680f8fdaeae51240fdf5 (patch)
tree72eb82c580f706fa4eed4c6f6ae99a5ba0f6c0b1
parent0a6fdbdeb1c25e31763c1fb333fa2723a7d2aba6 (diff)
IB/srp: Document locking conventions
Use lockdep_assert_held() statements to verify at run-time whether the proper locks are held. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Israel Rukshin <israelr@mellanox.com> Cc: Max Gurtovoy <maxg@mellanox.com> Cc: Laurence Oberman <loberman@redhat.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index d9b57f5958b5..862ee2ff5bb9 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -40,6 +40,7 @@
#include <linux/parser.h>
#include <linux/random.h>
#include <linux/jiffies.h>
+#include <linux/lockdep.h>
#include <rdma/ib_cache.h>
#include <linux/atomic.h>
@@ -1799,6 +1800,8 @@ static struct srp_iu *__srp_get_tx_iu(struct srp_rdma_ch *ch,
s32 rsv = (iu_type == SRP_IU_TSK_MGMT) ? 0 : SRP_TSK_MGMT_SQ_SIZE;
struct srp_iu *iu;
+ lockdep_assert_held(&ch->lock);
+
ib_process_cq_direct(ch->send_cq, -1);
if (list_empty(&ch->free_tx))
@@ -1829,6 +1832,8 @@ static void srp_send_done(struct ib_cq *cq, struct ib_wc *wc)
return;
}
+ lockdep_assert_held(&ch->lock);
+
list_add(&iu->list, &ch->free_tx);
}