compile error:
CC [M] .../lib/librte_eal/linuxapp/kni/kni_misc.o
cc1: warnings being treated as errors
.../lib/librte_eal/linuxapp/kni/kni_misc.c: In function ?kni_exit_net?:
.../lib/librte_eal/linuxapp/kni/kni_misc.c:113:18:
error: unused variable ?knet?
For kernel versions < v3.1 mutex_destroy() is a macro and does nothing,
this cause an unused variable warning for knet which used in the
mutex_destroy()
mutex_destroy() converted into static inline function with commit:
Linux: 4582c0a4866e ("mutex: Make mutex_destroy() an inline function")
To fix the warning unused attribute added to the knet variable.
Fixes: 93a298b34e1b ("kni: support core id parameter in single threaded mode")
Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
v2:
* updated commit log with more details on Linux version that issue
occurs
---
lib/librte_eal/linuxapp/kni/kni_misc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c
b/lib/librte_eal/linuxapp/kni/kni_misc.c
index 3303d9b..497db9b 100644
--- a/lib/librte_eal/linuxapp/kni/kni_misc.c
+++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
@@ -110,9 +110,11 @@ kni_init_net(struct net *net)
static void __net_exit
kni_exit_net(struct net *net)
{
- struct kni_net *knet = net_generic(net, kni_net_id);
+ struct kni_net *knet __maybe_unused;
+ knet = net_generic(net, kni_net_id);
mutex_destroy(&knet->kni_kthread_lock);
+
#ifndef HAVE_SIMPLIFIED_PERNET_OPERATIONS
kfree(knet);
#endif
--
2.7.4
