diff options
| author |   Damjan Marion <damarion@cisco.com> | 2018-05-10 13:40:44 +0200 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2018-05-10 17:16:56 +0000 |
| commit | 1105600416e0560cb05120a22e0a2e7359a13665 (patch) | |
| tree | acf1df08de42344c380473d81886864e662890cf /src/plugins/dpdk/device | |
| parent | 132dc49ee847a3e3b644de8b36499d73e8a8d37e (diff) | |
vppinfra: use count_trailing_zeros in sparse_vec_index
It is much cheaper to use ctzll than to do shift,subtract and mask
in likely case when we are looking for 1st set bit in the uword.
Change-Id: I31954081571978878c7098bafad0c85a91755fa2
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/dpdk/device')
| -rw-r--r-- | src/plugins/dpdk/device/cli.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/plugins/dpdk/device/cli.c b/src/plugins/dpdk/device/cli.c index 2eaf17e55a5..08bf0c94b53 100644 --- a/src/plugins/dpdk/device/cli.c +++ b/src/plugins/dpdk/device/cli.c @@ -1323,20 +1323,20 @@ set_dpdk_if_hqos_pktfield (vlib_main_t * vm, unformat_input_t * input, xd->hqos_wt[worker_thread_first + i].hqos_field0_slabpos = offset; xd->hqos_wt[worker_thread_first + i].hqos_field0_slabmask = mask; xd->hqos_wt[worker_thread_first + i].hqos_field0_slabshr = - __builtin_ctzll (mask); + count_trailing_zeros (mask); break; case 1: xd->hqos_wt[worker_thread_first + i].hqos_field1_slabpos = offset; xd->hqos_wt[worker_thread_first + i].hqos_field1_slabmask = mask; xd->hqos_wt[worker_thread_first + i].hqos_field1_slabshr = - __builtin_ctzll (mask); + count_trailing_zeros (mask); break; case 2: default: xd->hqos_wt[worker_thread_first + i].hqos_field2_slabpos = offset; xd->hqos_wt[worker_thread_first + i].hqos_field2_slabmask = mask; xd->hqos_wt[worker_thread_first + i].hqos_field2_slabshr = - __builtin_ctzll (mask); + count_trailing_zeros (mask); } done: |