diff options
| author |   Damjan Marion <damarion@cisco.com> | 2016-05-11 23:07:18 +0200 |
|---|---|---|
| committer | Damjan Marion <damarion@cisco.com> | 2016-05-19 18:14:38 +0200 |
| commit | 1c80e831b728ab378949714d5059a0b5b1822a0a (patch) | |
| tree | e4f3ecfee143f7dee0e9905570d41ca3ee345c83 /vnet/vnet/interface_output.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/interface_output.c')
| -rw-r--r-- | vnet/vnet/interface_output.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/vnet/vnet/interface_output.c b/vnet/vnet/interface_output.c index 04c1b7f59f8..9f9fb707297 100644 --- a/vnet/vnet/interface_output.c +++ b/vnet/vnet/interface_output.c @@ -1140,6 +1140,8 @@ VLIB_REGISTER_NODE (drop_buffers,static) = { .validate_frame = validate_error_frame, }; +VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop) + VLIB_REGISTER_NODE (punt_buffers,static) = { .function = process_punt, .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH @@ -1150,12 +1152,16 @@ VLIB_REGISTER_NODE (punt_buffers,static) = { .validate_frame = validate_error_frame, }; +VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt) + VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = { .function = vnet_per_buffer_interface_output, .name = "interface-output", .vector_size = sizeof (u32), }; +VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node, vnet_per_buffer_interface_output) + clib_error_t * vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm, u32 hw_if_index, |