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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>
This commit is contained in:
Bryan O'Sullivan 2007-03-15 14:45:13 -07:00 committed by Roland Dreier
parent 662af5813b
commit f0810daf74
1 changed files with 5 additions and 4 deletions
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9
drivers/infiniband/hw/ipath/ipath_file_ops.c
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@ -1592,15 +1592,16 @@ static int find_best_unit(struct file *fp,
*/
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, "