From: Vaishali Thakkar <vthakkar1994@gmail.com>
To: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
Viresh Kumar <viresh.kumar@linaro.org>
Subject: [PATCH v2] thermal: cpu_cooling: Remove usage of devm functions
Date: Thu, 20 Aug 2015 21:44:02 +0530 [thread overview]
Message-ID: <20150820161402.GA4951@localhost> (raw)
In the function cpufreq_get_requested_power, the memory allocated
for load_cpu is live within the function only. And after the
allocation it is immediately freed with devm_kfree. There is no
need to allocate memory for load_cpu with devm function so replace
devm_kcalloc with kcalloc and devm_kfree with kfree.
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
---
Changes since v1:
- Introduce new label based on Viresh Kumar's suggestion
---
drivers/thermal/cpu_cooling.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 620dcd4..7027923 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -584,8 +584,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
if (trace_thermal_power_cpu_get_power_enabled()) {
u32 ncpus = cpumask_weight(&cpufreq_device->allowed_cpus);
- load_cpu = devm_kcalloc(&cdev->device, ncpus, sizeof(*load_cpu),
- GFP_KERNEL);
+ load_cpu = kcalloc(ncpus, sizeof(*load_cpu), GFP_KERNEL);
}
for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {
@@ -607,22 +606,21 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
dynamic_power = get_dynamic_power(cpufreq_device, freq);
ret = get_static_power(cpufreq_device, tz, freq, &static_power);
- if (ret) {
- if (load_cpu)
- devm_kfree(&cdev->device, load_cpu);
- return ret;
- }
+ if (ret)
+ goto free;
- if (load_cpu) {
+ if (load_cpu)
trace_thermal_power_cpu_get_power(
&cpufreq_device->allowed_cpus,
freq, load_cpu, i, dynamic_power, static_power);
- devm_kfree(&cdev->device, load_cpu);
- }
-
*power = static_power + dynamic_power;
return 0;
+
+free:
+ kfree(load_cpu);
+
+ return ret;
}
/**
--
1.9.1
next reply other threads:[~2015-08-20 16:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-20 16:14 Vaishali Thakkar [this message]
2015-08-20 16:17 ` [PATCH v2] thermal: cpu_cooling: Remove usage of devm functions Viresh Kumar
2015-08-26 12:47 ` Javi Merino
2015-08-26 12:51 ` Viresh Kumar
2015-08-26 13:09 ` Javi Merino
2015-08-26 13:14 ` Viresh Kumar
2015-08-27 1:31 ` Vaishali Thakkar
2015-08-27 9:00 ` Javi Merino
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