| Message ID | 20170419132559.20459-7-alice.michael@intel.com |
|---|---|
| State | Accepted |
| Delegated to: | Jeff Kirsher |
| Headers | show |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@lists.osuosl.org] On > Behalf Of Alice Michael > Sent: Wednesday, April 19, 2017 6:26 AM > To: Michael, Alice <alice.michael@intel.com>; intel-wired- > lan@lists.osuosl.org > Subject: [Intel-wired-lan] [next PATCH S71 07/10] i40evf: remove needless > min_t() on num_online_cpus()*2 > > From: Jacob Keller <jacob.e.keller@intel.com> > > We already set pairs to the value of adapter->num_active_queues. This > value is limited by vsi_res->num_queue_pairs and num_online_cpus(). This > means that pairs by definition is already smaller than num_online_cpus()*2, > so we don't even need to bother with this check. > > Lets just remove it and update the comment. > > Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> > --- > drivers/net/ethernet/intel/i40evf/i40evf_main.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c index 8e6276d8..89035ee 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c @@ -1271,13 +1271,13 @@ static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) } pairs = adapter->num_active_queues; - /* It's easy to be greedy for MSI-X vectors, but it really - * doesn't do us much good if we have a lot more vectors - * than CPU's. So let's be conservative and only ask for - * (roughly) twice the number of vectors as there are CPU's. + /* It's easy to be greedy for MSI-X vectors, but it really doesn't do + * us much good if we have more vectors than CPUs. However, we already + * limit the total number of queues by the number of CPUs so we do not + * need any further limiting here. */ - v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; - v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); + v_budget = min_t(int, pairs + NONQ_VECS, + (int)adapter->vf_res->max_vectors); adapter->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry), GFP_KERNEL);