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| author | Dominik Brodowski | 2011-03-27 15:04:46 +0200 |
|---|---|---|
| committer | Dave Jones | 2011-05-04 17:50:57 +0200 |
| commit | 2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e (patch) | |
| tree | d933a68fc71f6e2c3b95b744a87fa1d817bea3d6 /arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c | |
| parent | [CPUFREQ] CPU hotplug, re-create sysfs directory and symlinks (diff) | |
| download | kernel-qcow2-linux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.tar.gz kernel-qcow2-linux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.tar.xz kernel-qcow2-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/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c b/arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c index 141abebc4516..7bac808804f3 100644 --- a/arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c +++ b/arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c @@ -57,8 +57,6 @@ MODULE_PARM_DESC(min_fsb, "Minimum FSB to use, if not defined: current FSB - 50"); #define PFX "cpufreq-nforce2: " -#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \ - "cpufreq-nforce2", msg) /** * nforce2_calc_fsb - calculate FSB @@ -270,7 +268,7 @@ static int nforce2_target(struct cpufreq_policy *policy, if (freqs.old == freqs.new) return 0; - dprintk("Old CPU frequency %d kHz, new %d kHz\n", + pr_debug("Old CPU frequency %d kHz, new %d kHz\n", freqs.old, freqs.new); cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); @@ -282,7 +280,7 @@ static int nforce2_target(struct cpufreq_policy *policy, printk(KERN_ERR PFX "Changing FSB to %d failed\n", target_fsb); else - dprintk("Changed FSB successfully to %d\n", + pr_debug("Changed FSB successfully to %d\n", target_fsb); /* Enable IRQs */ |