commit 8083e4ad970e4eb567e31037060cdd4ba346f0c0
author venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> Mon Aug 04 11:59:11 2008 -0700
committer Dave Jones <davej@redhat.com> Thu Oct 09 13:52:44 2008 -0400
tree 330e6dc1dbb7c7db13d14f3681d4a51f62708329
parent e9d95bf7eb929b9ddc9af9f4327b76c77ed4c7d6

[CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor

export get_cpu_idle_time_us() for it to be used in ondemand governor.
Last update time can be current time when the CPU is currently non-idle,
accounting for the busy time since last idle.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>

include/linux/tick.h

diff --git a/include/linux/tick.h b/include/linux/tick.h
index 8cf8cfe..98921a3 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -126,7 +126,7 @@
 	return len;
 }
 static inline void tick_nohz_stop_idle(int cpu) { }
-static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return 0; }
+static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
 # endif /* !NO_HZ */
 
 #endif