On Tuesday 05 August 2014 02:48 PM, Amit Kucheria wrote:
On Tue, Aug 5, 2014 at 1:39 PM, Sanjay Singh Rawat
<sanjay.ra...@linaro.org> wrote:
- add the governor sampling rate with the frequency transition latency to
make sure tansition happens.
- bug 77
Replace with complete URL: https://bugs.linaro.org/show_bug.cgi?id=77
to make git changelogs much more useful.
ACK, thanks
Signed-off-by: Sanjay Singh Rawat <sanjay.ra...@linaro.org>
Looks good.
---
include/functions.sh | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/include/functions.sh b/include/functions.sh
index 417c725..5823a81 100644
--- a/include/functions.sh
+++ b/include/functions.sh
@@ -123,6 +123,17 @@ wait_latency() {
local dirpath=$CPU_PATH/$cpu/cpufreq
local latency=
local nrfreq=
+ local sampling_rate=
+ local sleep_time=
+ local gov=$(cat $dirpath/scaling_governor)
+
+ # consider per-policy governor case
+ if [ -e $CPU_PATH/$cpu/cpufreq/$gov ]; then
+ sampling_rate=$(cat $CPU_PATH/$cpu/cpufreq/$gov/sampling_rate)
+ else
+ sampling_rate=$(cat $CPU_PATH/cpufreq/$gov/sampling_rate)
+ fi
+ sampling_rate=$((sampling_rate * 1000)) # unit nsec
latency=$(cat $dirpath/cpuinfo_transition_latency)
if [ $? -ne 0 ]; then
@@ -135,7 +146,10 @@ wait_latency() {
fi
nrfreq=$((nrfreq + 1))
- ../utils/nanosleep $(($nrfreq * $latency))
+
+ sleep_time=$(($latency + $sampling_rate))
+
+ ../utils/nanosleep $(($nrfreq * $sleep_time))
}
frequnit() {
--
1.8.3.2
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--
sanjay
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