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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2011-03-27 15:04:46 +0200 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2011-05-04 11:50:57 -0400 |
| commit | 2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e (patch) | |
| tree | d933a68fc71f6e2c3b95b744a87fa1d817bea3d6 /arch/arm | |
| parent | 27ecddc2a9f99ce4ac9a59a0acd77f7100b6d034 (diff) | |
| download | talos-obmc-linux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.tar.gz talos-obmc-linux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.zip | |
[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 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/cpufreq.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm/mach-davinci/cpufreq.c b/arch/arm/mach-davinci/cpufreq.c index 0a95be1512bb..41669ecc1f91 100644 --- a/arch/arm/mach-davinci/cpufreq.c +++ b/arch/arm/mach-davinci/cpufreq.c @@ -94,9 +94,7 @@ static int davinci_target(struct cpufreq_policy *policy, if (freqs.old == freqs.new) return ret; - cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, - dev_driver_string(cpufreq.dev), - "transition: %u --> %u\n", freqs.old, freqs.new); + dev_dbg(&cpufreq.dev, "transition: %u --> %u\n", freqs.old, freqs.new); ret = cpufreq_frequency_table_target(policy, pdata->freq_table, freqs.new, relation, &idx); |
