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Subject[PATCH v4 2/5] cpufreq: Keep track of which CPU owns the kobj/sysfs nodes separately
Date
The ownership of the kobj doesn't need to match policy->cpu or change as
frequently. So, keep track of it separately.

Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
---
drivers/cpufreq/cpufreq.c | 4 +++-
include/linux/cpufreq.h | 1 +
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index ee0eb7b..af4f291 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -868,7 +868,7 @@ static int cpufreq_add_dev_symlink(struct cpufreq_policy *policy)
for_each_cpu(j, policy->cpus) {
struct device *cpu_dev;

- if (j == policy->cpu)
+ if (j == policy->kobj_cpu)
continue;

pr_debug("Adding link for CPU: %u\n", j);
@@ -917,6 +917,7 @@ static int cpufreq_add_dev_interface(struct cpufreq_policy *policy,
goto err_out_kobj_put;
}

+ policy->kobj_cpu = policy->cpu;
ret = cpufreq_add_dev_symlink(policy);
if (ret)
goto err_out_kobj_put;
@@ -1330,6 +1331,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,

return -EINVAL;
}
+ policy->kobj_cpu = cpu_dev->id;

return cpu_dev->id;
}
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index ec4112d..91c2e38 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -68,6 +68,7 @@ struct cpufreq_policy {
unsigned int cpu; /* cpu nr of CPU managing this policy */
unsigned int last_cpu; /* cpu nr of previous CPU that managed
* this policy */
+ unsigned int kobj_cpu; /* Tracks which CPU own the kobj */
struct clk *clk;
struct cpufreq_cpuinfo cpuinfo;/* see above */

--
1.8.2.1
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