IB/ipath: Fix unit selection when all CPU affinity bits set
At some point things changed so that all the affinity bits can be set,
but cpus_full() macro is not true. This caused problems with the unit
selection logic on multi-unit (board) configurations.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 9ca582b..1272aaf 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1592,15 +1592,16 @@
*/
if (!cpus_empty(current->cpus_allowed) &&
!cpus_full(current->cpus_allowed)) {
- int ncpus = num_online_cpus(), curcpu = -1;
+ int ncpus = num_online_cpus(), curcpu = -1, nset = 0;
for (i = 0; i < ncpus; i++)
if (cpu_isset(i, current->cpus_allowed)) {
ipath_cdbg(PROC, "%s[%u] affinity set for "
- "cpu %d\n", current->comm,
- current->pid, i);
+ "cpu %d/%d\n", current->comm,
+ current->pid, i, ncpus);
curcpu = i;
+ nset++;
}
- if (curcpu != -1) {
+ if (curcpu != -1 && nset != ncpus) {
if (npresent) {
prefunit = curcpu / (ncpus / npresent);
ipath_cdbg(PROC,"%s[%u] %d chips, %d cpus, "