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charset="utf-8" Add a sysfs file called "avoid" which prints the current CPUs=20 makred as avoid.=20 This could be used by userspace components or tools such as irqbalance.=20 /sys/devices/system/cpu # cat avoid=20 70-479 Signed-off-by: Shrikanth Hegde --- drivers/base/cpu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 7779ab0ca7ce..51c1207f6f33 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -300,6 +300,13 @@ static ssize_t print_cpus_isolated(struct device *dev, } static DEVICE_ATTR(isolated, 0444, print_cpus_isolated, NULL); =20 +static ssize_t print_cpus_avoid(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(cpu_avoid_mask)); +} +static DEVICE_ATTR(avoid, 0444, print_cpus_avoid, NULL); + #ifdef CONFIG_NO_HZ_FULL static ssize_t print_cpus_nohz_full(struct device *dev, struct device_attribute *attr, char *buf) @@ -505,6 +512,7 @@ static struct attribute *cpu_root_attrs[] =3D { &dev_attr_offline.attr, &dev_attr_enabled.attr, &dev_attr_isolated.attr, + &dev_attr_avoid.attr, #ifdef CONFIG_NO_HZ_FULL &dev_attr_nohz_full.attr, #endif --=20 2.43.0