diff options
| author | Mitko Haralanov <mitko.haralanov@intel.com> | 2016-02-03 22:33:40 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-11 01:37:52 (GMT) |
| commit | 957558c9668f06b04530b7ddbfd2dbea86630496 (patch) | |
| tree | 6f3174e7db4d512ca8a9ec05034629b94efe108c /drivers/staging/rdma/hfi1/init.c | |
| parent | 2780739262e32b9c283b6b04f7899f9803993ebc (diff) | |
| download | linux-957558c9668f06b04530b7ddbfd2dbea86630496.tar.xz | |
staging/rdma/hfi1: Consolidate CPU/IRQ affinity support
This patch unifies the affinity support for CPU and IRQ allocations into
a single code base. The goal is to allow the driver to make intelligent
placement decision based on an overall view of processes and IRQs across
as much of the driver as possible.
Pulling all the scattered affinity code into a single code base lays the
ground work for accomplishing the above goal. For example, previous
implementations made user process placement decision solely based on
other user processes. This algorithm is limited as it did not take into
account IRQ placement and could result in overloading certain CPUs.
A single code base also provides a much easier way to maintain and debug
any performance issues related to affinity.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/staging/rdma/hfi1/init.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/init.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/staging/rdma/hfi1/init.c b/drivers/staging/rdma/hfi1/init.c index 17b876d..98b3fc1 100644 --- a/drivers/staging/rdma/hfi1/init.c +++ b/drivers/staging/rdma/hfi1/init.c @@ -144,7 +144,7 @@ int hfi1_create_ctxts(struct hfi1_devdata *dd) struct hfi1_ctxtdata *rcd; ppd = dd->pport + (i % dd->num_pports); - rcd = hfi1_create_ctxtdata(ppd, i); + rcd = hfi1_create_ctxtdata(ppd, i, dd->node); if (!rcd) { dd_dev_err(dd, "Unable to allocate kernel receive context, failing\n"); @@ -204,7 +204,8 @@ bail: /* * Common code for user and kernel context setup. */ -struct hfi1_ctxtdata *hfi1_create_ctxtdata(struct hfi1_pportdata *ppd, u32 ctxt) +struct hfi1_ctxtdata *hfi1_create_ctxtdata(struct hfi1_pportdata *ppd, u32 ctxt, + int numa) { struct hfi1_devdata *dd = ppd->dd; struct hfi1_ctxtdata *rcd; @@ -227,7 +228,7 @@ struct hfi1_ctxtdata *hfi1_create_ctxtdata(struct hfi1_pportdata *ppd, u32 ctxt) rcd->cnt = 1; rcd->ctxt = ctxt; dd->rcd[ctxt] = rcd; - rcd->numa_id = numa_node_id(); + rcd->numa_id = numa; rcd->rcv_array_groups = dd->rcv_entries.ngroups; mutex_init(&rcd->exp_lock); @@ -982,6 +983,7 @@ void hfi1_free_devdata(struct hfi1_devdata *dd) rcu_barrier(); /* wait for rcu callbacks to complete */ free_percpu(dd->int_counter); free_percpu(dd->rcv_limit); + hfi1_dev_affinity_free(dd); ib_dealloc_device(&dd->verbs_dev.rdi.ibdev); } @@ -1010,9 +1012,6 @@ struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra) dd->pport = (struct hfi1_pportdata *)(dd + 1); INIT_LIST_HEAD(&dd->list); - dd->node = dev_to_node(&pdev->dev); - if (dd->node < 0) - dd->node = 0; idr_preload(GFP_KERNEL); spin_lock_irqsave(&hfi1_devs_lock, flags); |