On Mon, Apr 08, 2019 at 10:32:52AM -0700, Stephane Eranian wrote:
> +static ssize_t set_sysctl_tfa(struct device *cdev,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> +{
> + bool val;
> + ssize_t ret;
> +
> + ret = kstrtobool(buf, &val);
> + if (ret)
> + return ret;
> +
> + /* no change */
> + if (val == allow_tsx_force_abort)
> + return count;
> +
> + allow_tsx_force_abort = val;
> +
> + get_online_cpus();
> + on_each_cpu(update_tfa_sched, NULL, 1);
> + put_online_cpus();
> +
> + return count;
> +}
So we care about concurrent writing to that file?
