svn commit: r267142 - head/sys/dev/netmap

[Andrey Zonov]

Author: zont
Date: Fri Jun  6 00:24:04 2014
New Revision: 267142
URL: http://svnweb.freebsd.org/changeset/base/267142

Log:
  Use mtx_lock_spin/mtx_unlock_spin primitives on spin lock
  
  Reviewed by:  luigi
  MFC after:    1 week

Modified:
  head/sys/dev/netmap/netmap.c
  head/sys/dev/netmap/netmap_mbq.c

Modified: head/sys/dev/netmap/netmap.c
==============================================================================
--- head/sys/dev/netmap/netmap.c        Fri Jun  6 00:22:19 2014        
(r267141)
+++ head/sys/dev/netmap/netmap.c        Fri Jun  6 00:24:04 2014        
(r267142)
@@ -1009,7 +1009,7 @@ netmap_rxsync_from_host(struct netmap_ad
        (void)pwait;    /* disable unused warnings */
        (void)td;
 
-       mtx_lock(&q->lock);
+       mtx_lock_spin(&q->lock);
 
        /* First part: import newly received packets */
        n = mbq_len(q);
@@ -1051,7 +1051,7 @@ netmap_rxsync_from_host(struct netmap_ad
        if (kring->rcur == kring->rtail && td) /* no bufs available */
                selrecord(td, &kring->si);
 
-       mtx_unlock(&q->lock);
+       mtx_unlock_spin(&q->lock);
        return ret;
 }
 
@@ -2381,7 +2381,7 @@ netmap_transmit(struct ifnet *ifp, struc
         * not possible on Linux).
         * Also avoid overflowing the queue.
         */
-       mtx_lock(&q->lock);
+       mtx_lock_spin(&q->lock);
 
         space = kring->nr_hwtail - kring->nr_hwcur;
         if (space < 0)
@@ -2398,7 +2398,7 @@ netmap_transmit(struct ifnet *ifp, struc
                m = NULL;
                error = 0;
        }
-       mtx_unlock(&q->lock);
+       mtx_unlock_spin(&q->lock);
 
 done:
        if (m)

Modified: head/sys/dev/netmap/netmap_mbq.c
==============================================================================
--- head/sys/dev/netmap/netmap_mbq.c    Fri Jun  6 00:22:19 2014        
(r267141)
+++ head/sys/dev/netmap/netmap_mbq.c    Fri Jun  6 00:24:04 2014        
(r267142)
@@ -76,9 +76,9 @@ static inline void __mbq_enqueue(struct 
 
 void mbq_safe_enqueue(struct mbq *q, struct mbuf *m)
 {
-    mtx_lock(&q->lock);
+    mtx_lock_spin(&q->lock);
     __mbq_enqueue(q, m);
-    mtx_unlock(&q->lock);
+    mtx_unlock_spin(&q->lock);
 }
 
 
@@ -110,9 +110,9 @@ struct mbuf *mbq_safe_dequeue(struct mbq
 {
     struct mbuf *ret;
 
-    mtx_lock(&q->lock);
+    mtx_lock_spin(&q->lock);
     ret =  __mbq_dequeue(q);
-    mtx_unlock(&q->lock);
+    mtx_unlock_spin(&q->lock);
 
     return ret;
 }
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