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authorjaszha03 <jason.zhang2@arm.com>2019-06-12 16:01:19 -0500
committerDave Barach <openvpp@barachs.net>2019-07-30 16:22:03 +0000
commitf25e7cfa5c615e1972d5823b65ca579f951d68a5 (patch)
tree47c4e91b45710d861081d1933e2e8cbe3f56fe42 /src/vnet
parent6b03ab73116a7746f9480ea00c3924dcecb2799f (diff)
vppinfra: refactor use of CLIB_MEMORY_BARRIER ()
All instances of test_and_set locks used the following sequence to release the locks: CLIB_MEMORY_BARRIER (); p->lock = 0; // p is a generic struct with a TAS lock Use clib_atomic_release to generate more efficient assembly code. Type: refactor Change-Id: Idca3a38b1cf43578108bdd1afe83b6ebc17a4c68 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
Diffstat (limited to 'src/vnet')
-rwxr-xr-xsrc/vnet/classify/vnet_classify.c3
-rw-r--r--src/vnet/dns/dns.h3
2 files changed, 2 insertions, 4 deletions
diff --git a/src/vnet/classify/vnet_classify.c b/src/vnet/classify/vnet_classify.c
index 64549a6e0d5..f5e49491b25 100755
--- a/src/vnet/classify/vnet_classify.c
+++ b/src/vnet/classify/vnet_classify.c
@@ -640,8 +640,7 @@ expand_ok:
vnet_classify_entry_free (t, v, old_log2_pages);
unlock:
- CLIB_MEMORY_BARRIER ();
- t->writer_lock[0] = 0;
+ clib_atomic_release (&t->writer_lock[0]);
return rv;
}
diff --git a/src/vnet/dns/dns.h b/src/vnet/dns/dns.h
index 19de69cc248..d5029e521d6 100644
--- a/src/vnet/dns/dns.h
+++ b/src/vnet/dns/dns.h
@@ -206,8 +206,7 @@ dns_cache_unlock (dns_main_t * dm)
{
if (dm->cache_lock)
{
- CLIB_MEMORY_BARRIER ();
- *dm->cache_lock = 0;
+ clib_atomic_release (dm->cache_lock);
}
}