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authorSirshak Das <sirshak.das@arm.com>2018-10-03 22:53:51 +0000
committerDamjan Marion <dmarion@me.com>2018-10-19 07:10:47 +0000
commit2f6d7bb93c157b874efb79a2d1583a4c368bf89a (patch)
tree05dc2867c598cbb8d711f074b4b0eb62dd464f41 /src/vppinfra/smp.h
parentbf3443b0f852f5a4c551d12f926defbd047f2161 (diff)
vppinfra: add atomic macros for __sync builtins
This is first part of addition of atomic macros with only macros for __sync builtins. - Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/) Additionally - clib_atomic_release macro added and used in the absence of any memory barrier. - clib_atomic_bool_cmp_and_swap added Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b Original-patch-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com> Reviewed-by: Steve Capper <steve.capper@arm.com>
Diffstat (limited to 'src/vppinfra/smp.h')
-rw-r--r--src/vppinfra/smp.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/vppinfra/smp.h b/src/vppinfra/smp.h
index e4ab66ad5c3..7146e51ac77 100644
--- a/src/vppinfra/smp.h
+++ b/src/vppinfra/smp.h
@@ -41,9 +41,7 @@
#include <vppinfra/cache.h>
#include <vppinfra/os.h> /* for os_panic */
-#define clib_smp_compare_and_swap(addr,new,old) __sync_val_compare_and_swap(addr,old,new)
#define clib_smp_swap(addr,new) __sync_lock_test_and_set(addr,new)
-#define clib_smp_atomic_add(addr,increment) __sync_fetch_and_add(addr,increment)
#if defined (i386) || defined (__x86_64__)
#define clib_smp_pause() do { asm volatile ("pause"); } while (0)