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| author |   Sirshak Das <sirshak.das@arm.com> | 2018-11-07 18:46:42 -0600 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2018-11-28 20:50:21 +0000 |
| commit | 19515acddc343d1680d4a5d27f39456999498591 (patch) | |
| tree | 96d7e4be9ca0379b252482f5081f3abeea7d32cb /src/vppinfra/atomics.h | |
| parent | 5785e89ba15128f9659bf0b6f78559c63a70e285 (diff) | |
Use acquire/release ordering when accessing svm_fifo shared variable cursize
Improves TCP iperf3 performance by ~3% on AArch64.
Change-Id: I1e51bd8403ba45ec6af4c2f96b95e884c1ae0d67
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>
Diffstat (limited to 'src/vppinfra/atomics.h')
| -rw-r--r-- | src/vppinfra/atomics.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/vppinfra/atomics.h b/src/vppinfra/atomics.h index 420ae837fc0..8084bdc77d4 100644 --- a/src/vppinfra/atomics.h +++ b/src/vppinfra/atomics.h @@ -40,7 +40,11 @@ #define clib_atomic_test_and_set(a) __sync_lock_test_and_set(a, 1) #define clib_atomic_release(a) __sync_lock_release(a) +#define clib_atomic_load_acq_n(a) __atomic_load_n((a), __ATOMIC_ACQUIRE) #define clib_atomic_store_rel_n(a, b) __atomic_store_n ((a), (b), __ATOMIC_RELEASE) #define clib_atomic_swap_acq_n(a, b) __atomic_exchange_n ((a), (b), __ATOMIC_ACQUIRE) +#define clib_atomic_fetch_add_rel(a, b) __atomic_fetch_add((a), (b), __ATOMIC_RELEASE) +#define clib_atomic_fetch_sub_rel(a, b) __atomic_fetch_sub((a), (b), __ATOMIC_RELEASE) + #endif /* included_clib_atomics_h */ |