static int timeout_us;
static bool nobau = true;
static int nobau_perm;
-static cycles_t congested_cycles;
/* tunables: */
static int max_concurr = MAX_BAU_CONCURRENT;
if ((completion_status == FLUSH_COMPLETE) && (try == 1)) {
bcp->period_requests++;
bcp->period_time += elapsed;
- if ((elapsed > congested_cycles) &&
+ if ((elapsed > usec_2_cycles(bcp->cong_response_us)) &&
(bcp->period_requests > bcp->cong_reps) &&
((bcp->period_time / bcp->period_requests) >
- congested_cycles)) {
+ usec_2_cycles(bcp->cong_response_us))) {
stat->s_congested++;
disable_for_period(bcp, stat);
}
else if (is_uv1_hub())
ops = uv1_bau_ops;
+ nuvhubs = uv_num_possible_blades();
+ if (nuvhubs < 2) {
+ pr_crit("UV: BAU disabled - insufficient hub count\n");
+ goto err_bau_disable;
+ }
+
for_each_possible_cpu(cur_cpu) {
mask = &per_cpu(uv_flush_tlb_mask, cur_cpu);
zalloc_cpumask_var_node(mask, GFP_KERNEL, cpu_to_node(cur_cpu));
}
- nuvhubs = uv_num_possible_blades();
- congested_cycles = usec_2_cycles(congested_respns_us);
-
uv_base_pnode = 0x7fffffff;
for (uvhub = 0; uvhub < nuvhubs; uvhub++) {
cpus = uv_blade_nr_possible_cpus(uvhub);
enable_timeouts();
if (init_per_cpu(nuvhubs, uv_base_pnode)) {
- set_bau_off();
- nobau_perm = 1;
- return 0;
+ pr_crit("UV: BAU disabled - per CPU init failed\n");
+ goto err_bau_disable;
}
vector = UV_BAU_MESSAGE;
}
return 0;
+
+err_bau_disable:
+
+ for_each_possible_cpu(cur_cpu)
+ free_cpumask_var(per_cpu(uv_flush_tlb_mask, cur_cpu));
+
+ set_bau_off();
+ nobau_perm = 1;
+
+ return -EINVAL;
}
core_initcall(uv_bau_init);
fs_initcall(uv_ptc_init);