diff options
Diffstat (limited to 'drivers/base/cpu.c')
| -rw-r--r-- | drivers/base/cpu.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 321cd7b4d817..58a9b608d821 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -18,6 +18,7 @@ #include <linux/cpufeature.h> #include <linux/tick.h> #include <linux/pm_qos.h> +#include <linux/sched/isolation.h> #include "base.h" @@ -271,8 +272,16 @@ static ssize_t print_cpus_isolated(struct device *dev, struct device_attribute *attr, char *buf) { int n = 0, len = PAGE_SIZE-2; + cpumask_var_t isolated; - n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(cpu_isolated_map)); + if (!alloc_cpumask_var(&isolated, GFP_KERNEL)) + return -ENOMEM; + + cpumask_andnot(isolated, cpu_possible_mask, + housekeeping_cpumask(HK_FLAG_DOMAIN)); + n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(isolated)); + + free_cpumask_var(isolated); return n; } @@ -377,7 +386,8 @@ int register_cpu(struct cpu *cpu, int num) per_cpu(cpu_sys_devices, num) = &cpu->dev; register_cpu_under_node(num, cpu_to_node(num)); - dev_pm_qos_expose_latency_limit(&cpu->dev, 0); + dev_pm_qos_expose_latency_limit(&cpu->dev, + PM_QOS_RESUME_LATENCY_NO_CONSTRAINT); return 0; } |