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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/x86/kernel/cpu/cpufreq/longhaul.c | |
| parent | 27ecddc2a9f99ce4ac9a59a0acd77f7100b6d034 (diff) | |
| download | blackbird-op-linux-2d06d8c49afdcc9bb35a85039fa50f0fe35bd40e.tar.gz blackbird-op-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/longhaul.c')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/longhaul.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c index cf48cdd6907d..f47d26e2a135 100644 --- a/arch/x86/kernel/cpu/cpufreq/longhaul.c +++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c @@ -77,9 +77,6 @@ static int scale_voltage; static int disable_acpi_c3; static int revid_errata; -#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \ - "longhaul", msg) - /* Clock ratios multiplied by 10 */ static int mults[32]; @@ -87,7 +84,6 @@ static int eblcr[32]; static int longhaul_version; static struct cpufreq_frequency_table *longhaul_table; -#ifdef CONFIG_CPU_FREQ_DEBUG static char speedbuffer[8]; static char *print_speed(int speed) @@ -106,7 +102,6 @@ static char *print_speed(int speed) return speedbuffer; } -#endif static unsigned int calc_speed(int mult) @@ -275,7 +270,7 @@ static void longhaul_setstate(unsigned int table_index) cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); - dprintk("Setting to FSB:%dMHz Mult:%d.%dx (%s)\n", + pr_debug("Setting to FSB:%dMHz Mult:%d.%dx (%s)\n", fsb, mult/10, mult%10, print_speed(speed/1000)); retry_loop: preempt_disable(); @@ -460,12 +455,12 @@ static int __cpuinit longhaul_get_ranges(void) break; } - dprintk("MinMult:%d.%dx MaxMult:%d.%dx\n", + pr_debug("MinMult:%d.%dx MaxMult:%d.%dx\n", minmult/10, minmult%10, maxmult/10, maxmult%10); highest_speed = calc_speed(maxmult); lowest_speed = calc_speed(minmult); - dprintk("FSB:%dMHz Lowest speed: %s Highest speed:%s\n", fsb, + pr_debug("FSB:%dMHz Lowest speed: %s Highest speed:%s\n", fsb, print_speed(lowest_speed/1000), print_speed(highest_speed/1000)); |
