提交 2920e9ce 编写于 作者: S Shilpasri G Bhat 提交者: Rafael J. Wysocki

cpufreq: powernv: Remove flag use-case of policy->driver_data

commit 1b028984 ("cpufreq: powernv: Add sysfs attributes to show
throttle stats") used policy->driver_data as a flag for one-time creation
of throttle sysfs files. Instead of this use 'kernfs_find_and_get()' to
check if the attribute already exists. This is required as
policy->driver_data is used for other purposes in the later patch.
Signed-off-by: NShilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: NAkshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
上级 6de0dc4b
......@@ -455,13 +455,15 @@ static int powernv_cpufreq_target_index(struct cpufreq_policy *policy,
static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
int base, i;
struct kernfs_node *kn;
base = cpu_first_thread_sibling(policy->cpu);
for (i = 0; i < threads_per_core; i++)
cpumask_set_cpu(base + i, policy->cpus);
if (!policy->driver_data) {
kn = kernfs_find_and_get(policy->kobj.sd, throttle_attr_grp.name);
if (!kn) {
int ret;
ret = sysfs_create_group(&policy->kobj, &throttle_attr_grp);
......@@ -470,11 +472,8 @@ static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
policy->cpu);
return ret;
}
/*
* policy->driver_data is used as a flag for one-time
* creation of throttle sysfs files.
*/
policy->driver_data = policy;
} else {
kernfs_put(kn);
}
return cpufreq_table_validate_and_show(policy, powernv_freqs);
}
......
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