diff options
author | Damjan Marion <damarion@cisco.com> | 2016-05-11 23:07:18 +0200 |
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committer | Damjan Marion <damarion@cisco.com> | 2016-05-19 18:14:38 +0200 |
commit | 1c80e831b728ab378949714d5059a0b5b1822a0a (patch) | |
tree | e4f3ecfee143f7dee0e9905570d41ca3ee345c83 /vnet/vnet/classify/ip_classify.c | |
parent | 82e29c455833b5b12e04c89d2dec1106b499e6b0 (diff) |
Add support for multiple microarchitectures in single binary
* compiler -march= parameter is changed from native to corei7
so code is always genereted with instructions which are available
on the Nehalem microarchitecture (up to SSE4.2)
* compiler -mtune= parameter is added so code is optimized for
corei7-avx which equals to Sandy Bridge microarchitecture
* set of macros is added which allows run-time detection of available
cpu instructions (e.g. clib_cpu_supports_avx())
* set of macros is added which allows us to clone graph node funcitons
where cloned function is optmized for different microarchitecture
Those macros are using following attributes:
__attribute__((flatten))
__attribute__((target("arch=core-avx2)))
I.e. If applied to foo_node_fn() macro will generate cloned
functions foo_node_fn_avx2() and foo_node_fn_avx512() (future)
It will also generate function void * foo_node_fn_multiarch_select()
which detects available instruction set and returns pointer to the
best matching function clone.
Change-Id: I2dce0ac92a5ede95fcb56f47f3d1f3c4c040bac0
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'vnet/vnet/classify/ip_classify.c')
-rw-r--r-- | vnet/vnet/classify/ip_classify.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/vnet/vnet/classify/ip_classify.c b/vnet/vnet/classify/ip_classify.c index 8152f6ce353..75e80ad67ab 100644 --- a/vnet/vnet/classify/ip_classify.c +++ b/vnet/vnet/classify/ip_classify.c @@ -329,6 +329,8 @@ VLIB_REGISTER_NODE (ip4_classify_node) = { .next_nodes = IP4_LOOKUP_NEXT_NODES, }; +VLIB_NODE_FUNCTION_MULTIARCH (ip4_classify_node, ip4_classify) + static uword ip6_classify (vlib_main_t * vm, vlib_node_runtime_t * node, @@ -350,6 +352,8 @@ VLIB_REGISTER_NODE (ip6_classify_node) = { .next_nodes = IP6_LOOKUP_NEXT_NODES, }; +VLIB_NODE_FUNCTION_MULTIARCH (ip6_classify_node, ip6_classify) + static clib_error_t * ip_classify_init (vlib_main_t * vm) { |