summaryrefslogtreecommitdiff
path: root/drivers/cpufreq/freq_table.c
diff options
context:
space:
mode:
authorDominik Brodowski <linux@dominikbrodowski.net>2011-03-27 17:04:46 +0400
committerDave Jones <davej@redhat.com>2011-05-04 19:50:57 +0400
commit2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e (patch)
treed933a68fc71f6e2c3b95b744a87fa1d817bea3d6 /drivers/cpufreq/freq_table.c
parent27ecddc2a9f99ce4ac9a59a0acd77f7100b6d034 (diff)
downloadlinux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.tar.xz
[CPUFREQ] use dynamic debug instead of custom infrastructure
With dynamic debug having gained the capability to report debug messages also during the boot process, it offers a far superior interface for debug messages than the custom cpufreq infrastructure. As a first step, remove the old cpufreq_debug_printk() function and replace it with a call to the generic pr_debug() function. How can dynamic debug be used on cpufreq? You need a kernel which has CONFIG_DYNAMIC_DEBUG enabled. To enabled debugging during runtime, mount debugfs and $ echo -n 'module cpufreq +p' > /sys/kernel/debug/dynamic_debug/control for debugging the complete "cpufreq" module. To achieve the same goal during boot, append ddebug_query="module cpufreq +p" as a boot parameter to the kernel of your choice. For more detailled instructions, please see Documentation/dynamic-debug-howto.txt Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'drivers/cpufreq/freq_table.c')
-rw-r--r--drivers/cpufreq/freq_table.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index 05432216e224..90431cb92804 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -14,9 +14,6 @@
#include <linux/init.h>
#include <linux/cpufreq.h>
-#define dprintk(msg...) \
- cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "freq-table", msg)
-
/*********************************************************************
* FREQUENCY TABLE HELPERS *
*********************************************************************/
@@ -31,11 +28,11 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
unsigned int freq = table[i].frequency;
if (freq == CPUFREQ_ENTRY_INVALID) {
- dprintk("table entry %u is invalid, skipping\n", i);
+ pr_debug("table entry %u is invalid, skipping\n", i);
continue;
}
- dprintk("table entry %u: %u kHz, %u index\n",
+ pr_debug("table entry %u: %u kHz, %u index\n",
i, freq, table[i].index);
if (freq < min_freq)
min_freq = freq;
@@ -61,7 +58,7 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
unsigned int i;
unsigned int count = 0;
- dprintk("request for verification of policy (%u - %u kHz) for cpu %u\n",
+ pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n",
policy->min, policy->max, policy->cpu);
if (!cpu_online(policy->cpu))
@@ -86,7 +83,7 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
- dprintk("verification lead to (%u - %u kHz) for cpu %u\n",
+ pr_debug("verification lead to (%u - %u kHz) for cpu %u\n",
policy->min, policy->max, policy->cpu);
return 0;
@@ -110,7 +107,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
};
unsigned int i;
- dprintk("request for target %u kHz (relation: %u) for cpu %u\n",
+ pr_debug("request for target %u kHz (relation: %u) for cpu %u\n",
target_freq, relation, policy->cpu);
switch (relation) {
@@ -167,7 +164,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
} else
*index = optimal.index;
- dprintk("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
+ pr_debug("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
table[*index].index);
return 0;
@@ -216,14 +213,14 @@ EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
unsigned int cpu)
{
- dprintk("setting show_table for cpu %u to %p\n", cpu, table);
+ pr_debug("setting show_table for cpu %u to %p\n", cpu, table);
per_cpu(cpufreq_show_table, cpu) = table;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr);
void cpufreq_frequency_table_put_attr(unsigned int cpu)
{
- dprintk("clearing show_table for cpu %u\n", cpu);
+ pr_debug("clearing show_table for cpu %u\n", cpu);
per_cpu(cpufreq_show_table, cpu) = NULL;
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr);