Re: [PATCH] cpufreq: Reformat printk() statement

From: Joe Perches
Date: Mon Mar 10 2014 - 00:07:31 EST

On Mon, 2014-03-10 at 11:53 +0800, Viresh Kumar wrote:
> On 7 March 2014 01:34, Soren Brinkmann <soren.brinkmann@xxxxxxxxxx> wrote:
> > Reformat a printk statement to:
> > - use pr_warn
> > - bring the whole string into a single line in favor of being able to
> > grep for the message (ignoring the 80 char limit)
> >
> > Signed-off-by: Soren Brinkmann <soren.brinkmann@xxxxxxxxxx>
[]
> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>

A more comprehensive patch would be to:

Add missing newlines
Coalesce format fragments
Convert printks to pr_<level>
Align arguments
---
drivers/cpufreq/cpufreq.c | 85 ++++++++++++++++++++++-------------------------
1 file changed, 40 insertions(+), 45 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 56b7b1b..c2d06e9 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -181,8 +181,8 @@ unsigned int cpufreq_generic_get(unsigned int cpu)
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);

if (!policy || IS_ERR(policy->clk)) {
- pr_err("%s: No %s associated to cpu: %d\n", __func__,
- policy ? "clk" : "policy", cpu);
+ pr_err("%s: No %s associated to cpu: %d\n",
+ __func__, policy ? "clk" : "policy", cpu);
return 0;
}

@@ -254,15 +254,15 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
if (!l_p_j_ref_freq) {
l_p_j_ref = loops_per_jiffy;
l_p_j_ref_freq = ci->old;
- pr_debug("saving %lu as reference value for loops_per_jiffy; "
- "freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
+ pr_debug("saving %lu as reference value for loops_per_jiffy; freq is %u kHz\n",
+ l_p_j_ref, l_p_j_ref_freq);
}
if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) ||
(val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
ci->new);
- pr_debug("scaling loops_per_jiffy to %lu "
- "for frequency %u kHz\n", loops_per_jiffy, ci->new);
+ pr_debug("scaling loops_per_jiffy to %lu for frequency %u kHz\n",
+ loops_per_jiffy, ci->new);
}
}
#else
@@ -282,7 +282,7 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy,

freqs->flags = cpufreq_driver->flags;
pr_debug("notification %u of frequency transition to %u kHz\n",
- state, freqs->new);
+ state, freqs->new);

switch (state) {

@@ -294,9 +294,8 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy,
if (!(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) {
if ((policy) && (policy->cpu == freqs->cpu) &&
(policy->cur) && (policy->cur != freqs->old)) {
- pr_debug("Warning: CPU frequency is"
- " %u, cpufreq assumed %u kHz.\n",
- freqs->old, policy->cur);
+ pr_debug("Warning: CPU frequency is %u, cpufreq assumed %u kHz\n",
+ freqs->old, policy->cur);
freqs->old = policy->cur;
}
}
@@ -307,8 +306,8 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy,

case CPUFREQ_POSTCHANGE:
adjust_jiffies(CPUFREQ_POSTCHANGE, freqs);
- pr_debug("FREQ: %lu - CPU: %lu", (unsigned long)freqs->new,
- (unsigned long)freqs->cpu);
+ pr_debug("FREQ: %lu - CPU: %lu\n",
+ (unsigned long)freqs->new, (unsigned long)freqs->cpu);
trace_cpu_frequency(freqs->new, freqs->cpu);
srcu_notifier_call_chain(&cpufreq_transition_notifier_list,
CPUFREQ_POSTCHANGE, freqs);
@@ -368,13 +367,13 @@ static ssize_t store_boost(struct kobject *kobj, struct attribute *attr,
return -EINVAL;

if (cpufreq_boost_trigger_state(enable)) {
- pr_err("%s: Cannot %s BOOST!\n", __func__,
- enable ? "enable" : "disable");
+ pr_err("%s: Cannot %s BOOST!\n",
+ __func__, enable ? "enable" : "disable");
return -EINVAL;
}

- pr_debug("%s: cpufreq BOOST %s\n", __func__,
- enable ? "enabled" : "disabled");
+ pr_debug("%s: cpufreq BOOST %s\n",
+ __func__, enable ? "enabled" : "disabled");

return count;
}
@@ -1184,7 +1183,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
if (gov) {
policy->governor = gov;
pr_debug("Restoring governor %s for cpu %d\n",
- policy->governor->name, cpu);
+ policy->governor->name, cpu);
}
#endif

@@ -1263,7 +1262,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
if (ret) {
- pr_err("%s: Failed to move kobj: %d", __func__, ret);
+ pr_err("%s: Failed to move kobj: %d\n", __func__, ret);

down_write(&policy->rwsem);
cpumask_set_cpu(old_cpu, policy->cpus);
@@ -1331,7 +1330,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,

if (!frozen) {
pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
- __func__, new_cpu, cpu);
+ __func__, new_cpu, cpu);
}
}
}
@@ -1371,7 +1370,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
CPUFREQ_GOV_POLICY_EXIT);
if (ret) {
pr_err("%s: Failed to exit governor\n",
- __func__);
+ __func__);
return ret;
}
}
@@ -1399,7 +1398,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
(ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
pr_err("%s: Failed to start governor\n",
- __func__);
+ __func__);
return ret;
}
}
@@ -1456,8 +1455,8 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
struct cpufreq_freqs freqs;
unsigned long flags;

- pr_debug("Warning: CPU frequency out of sync: cpufreq and timing "
- "core thinks of %u, is %u kHz.\n", old_freq, new_freq);
+ pr_debug("Warning: CPU frequency out of sync: cpufreq and timing core thinks of %u, is %u kHz\n",
+ old_freq, new_freq);

freqs.old = old_freq;
freqs.new = new_freq;
@@ -1598,8 +1597,8 @@ static int cpufreq_bp_suspend(void)
if (cpufreq_driver->suspend) {
ret = cpufreq_driver->suspend(policy);
if (ret)
- printk(KERN_ERR "cpufreq: suspend failed in ->suspend "
- "step on CPU %u\n", policy->cpu);
+ pr_err("suspend failed in ->suspend step on CPU %u\n",
+ policy->cpu);
}

cpufreq_cpu_put(policy);
@@ -1636,8 +1635,8 @@ static void cpufreq_bp_resume(void)
if (cpufreq_driver->resume) {
ret = cpufreq_driver->resume(policy);
if (ret) {
- printk(KERN_ERR "cpufreq: resume failed in ->resume "
- "step on CPU %u\n", policy->cpu);
+ pr_err("resume failed in ->resume step on CPU %u\n",
+ policy->cpu);
goto fail;
}
}
@@ -1767,7 +1766,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
target_freq = policy->min;

pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n",
- policy->cpu, target_freq, relation, old_target_freq);
+ policy->cpu, target_freq, relation, old_target_freq);

/*
* This might look like a redundant call as we are checking it again
@@ -1812,8 +1811,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
freqs.flags = 0;

pr_debug("%s: cpu: %d, oldfreq: %u, new freq: %u\n",
- __func__, policy->cpu, freqs.old,
- freqs.new);
+ __func__, policy->cpu, freqs.old, freqs.new);

cpufreq_notify_transition(policy, &freqs,
CPUFREQ_PRECHANGE);
@@ -1822,7 +1820,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
retval = cpufreq_driver->target_index(policy, index);
if (retval)
pr_err("%s: Failed to change cpu frequency: %d\n",
- __func__, retval);
+ __func__, retval);

if (notify)
cpufreq_notify_post_transition(policy, &freqs, retval);
@@ -1874,11 +1872,8 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
if (!gov)
return -EINVAL;
else {
- printk(KERN_WARNING "%s governor failed, too long"
- " transition latency of HW, fallback"
- " to %s governor\n",
- policy->governor->name,
- gov->name);
+ pr_warn("%s governor failed, too long transition latency of HW, fallback to %s governor\n",
+ policy->governor->name, gov->name);
policy->governor = gov;
}
}
@@ -1888,7 +1883,7 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
return -EINVAL;

pr_debug("__cpufreq_governor for CPU %u, event %u\n",
- policy->cpu, event);
+ policy->cpu, event);

mutex_lock(&cpufreq_governor_lock);
if ((policy->governor_enabled && event == CPUFREQ_GOV_START)
@@ -2020,8 +2015,8 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_governor *old_gov;
int ret;

- pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu,
- new_policy->min, new_policy->max);
+ pr_debug("setting new policy for CPU %u: %u - %u kHz\n",
+ new_policy->cpu, new_policy->min, new_policy->max);

memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo));

@@ -2057,7 +2052,7 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy,
policy->max = new_policy->max;

pr_debug("new min and max freqs are %u - %u kHz\n",
- policy->min, policy->max);
+ policy->min, policy->max);

if (cpufreq_driver->setpolicy) {
policy->policy = new_policy->policy;
@@ -2145,7 +2140,7 @@ int cpufreq_update_policy(unsigned int cpu)
}

if (!policy->cur) {
- pr_debug("Driver did not initialize current freq");
+ pr_debug("Driver did not initialize current freq\n");
policy->cur = new_policy.cur;
} else {
if (policy->cur != new_policy.cur && has_target())
@@ -2247,8 +2242,8 @@ int cpufreq_boost_trigger_state(int state)
cpufreq_driver->boost_enabled = !state;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);

- pr_err("%s: Cannot %s BOOST\n", __func__,
- state ? "enable" : "disable");
+ pr_err("%s: Cannot %s BOOST\n",
+ __func__, state ? "enable" : "disable");
}

return ret;
@@ -2320,7 +2315,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
ret = cpufreq_sysfs_create_file(&boost.attr);
if (ret) {
pr_err("%s: cannot register global BOOST sysfs file\n",
- __func__);
+ __func__);
goto err_null_driver;
}
}
@@ -2343,7 +2338,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
/* if all ->init() calls failed, unregister */
if (ret) {
pr_debug("no CPU initialized for driver %s\n",
- driver_data->name);
+ driver_data->name);
goto err_if_unreg;
}
}


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