diff options
| author | Dave Jones <davej@redhat.com> | 2009-03-05 00:16:26 -0500 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2009-03-05 00:16:26 -0500 |
| commit | 36e8abf3edcd2d207193ec5741d1a2a645d470a5 (patch) | |
| tree | 8a4daf38322204c345b3c3f91f3f91d8e231468f | |
| parent | eb3092cee79e4efa5d3e9c81c7e6ca90318cebb8 (diff) | |
[CPUFREQ] Prevent p4-clockmod from auto-binding to the ondemand governor.
The latency of p4-clockmod sucks so hard that scaling on a regular
basis with ondemand is a really bad idea.
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Dave Jones <davej@redhat.com>
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/p4-clockmod.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c index 1778402305e0..352cf9a49164 100644 --- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c @@ -246,7 +246,10 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) cpufreq_frequency_table_get_attr(p4clockmod_table, policy->cpu); /* cpuinfo and default policy values */ - policy->cpuinfo.transition_latency = 1000000; /* assumed */ + + /* the transition latency is set to be 1 higher than the maximum + * transition latency of the ondemand governor */ + policy->cpuinfo.transition_latency = 10000001; policy->cur = stock_freq; return cpufreq_frequency_table_cpuinfo(policy, &p4clockmod_table[0]); |