seconds. Defaults to 10*60 = 10mins. A value of 0
disables the blank timer.
+ core_ctl_disable_cpumask= [SMP]
+ Exempt the CPUs from being managed by core_ctl.
+ core_ctl operates on a cluster basis. So all the
+ CPUs in a given cluster must be specified to disable
+ core_ctl for that cluster.
+
coredump_filter=
[KNL] Change the default value for
/proc/<pid>/coredump_filter.
/* ============================ init code ============================== */
+static cpumask_var_t core_ctl_disable_cpumask;
+static bool core_ctl_disable_cpumask_present;
+
+static int __init core_ctl_disable_setup(char *str)
+{
+ if (!*str)
+ return -EINVAL;
+
+ alloc_bootmem_cpumask_var(&core_ctl_disable_cpumask);
+
+ if (cpulist_parse(str, core_ctl_disable_cpumask) < 0) {
+ free_bootmem_cpumask_var(core_ctl_disable_cpumask);
+ return -EINVAL;
+ }
+
+ core_ctl_disable_cpumask_present = true;
+ pr_info("disable_cpumask=%*pbl\n",
+ cpumask_pr_args(core_ctl_disable_cpumask));
+
+ return 0;
+}
+early_param("core_ctl_disable_cpumask", core_ctl_disable_setup);
+
+static bool should_skip(const struct cpumask *mask)
+{
+ if (!core_ctl_disable_cpumask_present)
+ return false;
+
+ /*
+ * We operate on a cluster basis. Disable the core_ctl for
+ * a cluster, if all of it's cpus are specified in
+ * core_ctl_disable_cpumask
+ */
+ return cpumask_subset(mask, core_ctl_disable_cpumask);
+}
+
static struct cluster_data *find_cluster_by_first_cpu(unsigned int first_cpu)
{
unsigned int i;
unsigned int cpu;
struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
+ if (should_skip(mask))
+ return 0;
+
if (find_cluster_by_first_cpu(first_cpu))
return 0;
{
unsigned int cpu;
+ if (should_skip(cpu_possible_mask))
+ return 0;
+
core_ctl_check_interval = (rq_avg_period_ms - RQ_AVG_TOLERANCE)
* NSEC_PER_MSEC;