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authorEric Piel <Eric.Piel@tremplin-utc.net>2006-03-10 11:34:16 +0200
committerDominik Brodowski <linux@dominikbrodowski.net>2006-03-26 10:43:06 +0200
commitff8c288d7d1a368b663058cdee1ea0adcdef2fa2 (patch)
tree04de5f31a6773e1663a521c1217cb494c18dfa0e /drivers/cpufreq
parenta159b82770ab84e1b5e0306fa65e158188492b16 (diff)
downloadop-kernel-dev-ff8c288d7d1a368b663058cdee1ea0adcdef2fa2.zip
op-kernel-dev-ff8c288d7d1a368b663058cdee1ea0adcdef2fa2.tar.gz
[PATCH] cpufreq_ondemand: Warn if it cannot run due to too long transition latency
Display a warning if the ondemand governor can not be selected due to a transition latency of the cpufreq driver which is too long. Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 69aa1db..6430489 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -395,8 +395,11 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
return -EINVAL;
if (policy->cpuinfo.transition_latency >
- (TRANSITION_LATENCY_LIMIT * 1000))
+ (TRANSITION_LATENCY_LIMIT * 1000)) {
+ printk(KERN_WARNING "ondemand governor failed to load "
+ "due to too long transition latency\n");
return -EINVAL;
+ }
if (this_dbs_info->enable) /* Already enabled */
break;
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