redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

IB/hfi1: Avoid credit return allocation for cpu-less NUMA nodes

Browse source 
Do not allocate credit return base and DMA memory for
NUMA nodes without CPUs.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Harish Chegondi 2016-12-07 19:34:19 -08:00 committed by Doug Ledford
parent 0771da5a6e
commit 9d8145a604
3 changed files with 6 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/infiniband/hw/hfi1/affinity.c
View file

@ -125,6 +125,7 @@ int node_affinity_init(void)
cpumask_weight(topology_sibling_cpumask(
cpumask_first(&node_affinity.proc.mask)
));
node_affinity.num_possible_nodes = num_possible_nodes();
node_affinity.num_online_nodes = num_online_nodes();
node_affinity.num_online_cpus = num_online_cpus();
@ -135,7 +136,7 @@ int node_affinity_init(void)
*/
init_real_cpu_mask();
hfi1_per_node_cntr = kcalloc(num_possible_nodes(),
hfi1_per_node_cntr = kcalloc(node_affinity.num_possible_nodes,
sizeof(*hfi1_per_node_cntr), GFP_KERNEL);
if (!hfi1_per_node_cntr)
return -ENOMEM;

1
drivers/infiniband/hw/hfi1/affinity.h
View file

@ -111,6 +111,7 @@ struct hfi1_affinity_node_list {
struct cpumask real_cpu_mask;
struct cpu_mask_set proc;
int num_core_siblings;
int num_possible_nodes;
int num_online_nodes;
int num_online_cpus;
struct mutex lock; /* protects affinity nodes */

20
drivers/infiniband/hw/hfi1/pio.c
View file

@ -2036,21 +2036,10 @@ freesc15:
int init_credit_return(struct hfi1_devdata *dd)
{
int ret;
int num_numa;
int i;
num_numa = num_online_nodes();
/* enforce the expectation that the numas are compact */
for (i = 0; i < num_numa; i++) {
if (!node_online(i)) {
dd_dev_err(dd, "NUMA nodes are not compact\n");
ret = -EINVAL;
goto done;
}
}
dd->cr_base = kcalloc(
num_numa,
node_affinity.num_possible_nodes,
sizeof(struct credit_return_base),
GFP_KERNEL);
if (!dd->cr_base) {
@ -2058,7 +2047,7 @@ int init_credit_return(struct hfi1_devdata *dd)
ret = -ENOMEM;
goto done;
}
for (i = 0; i < num_numa; i++) {
for_each_node_with_cpus(i) {
int bytes = TXE_NUM_CONTEXTS * sizeof(struct credit_return);
set_dev_node(&dd->pcidev->dev, i);
@ -2085,14 +2074,11 @@ done:
void free_credit_return(struct hfi1_devdata *dd)
{
int num_numa;
int i;
if (!dd->cr_base)
return;
num_numa = num_online_nodes();
for (i = 0; i < num_numa; i++) {
for (i = 0; i < node_affinity.num_possible_nodes; i++) {
if (dd->cr_base[i].va) {
dma_free_coherent(&dd->pcidev->dev,
TXE_NUM_CONTEXTS *