Hi Viresh,

On 01/28/2016 02:10 PM, Viresh Kumar wrote:

On 28-01-16, 12:55, Shilpasri G Bhat wrote:

quoted

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index b683e8e..dea4620 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu

@@ -271,3 +271,48 @@ Description:	Parameters for the CPU cache attributes
 			- WriteBack: data is written only to the cache line and
 				     the modified cache line is written to main
 				     memory only when it is replaced
+
+What:		/sys/devices/system/cpu/cpufreq/chip*/throttle_stats

What about the chip directory ? Shouldn't that be documented? And
shouldn't that mention that this is just for powerpc ?

And before that, I don't think that you are doing this properly. I am
sorry that I never came to a point where I could review it, and you
continued with it, version after version.

But, I really have strong objections to the way this is done. And you
are making things more complex then they are.

So, these stats are per-policy, right ?

First of all sorry about the version log.
No these stats are not per-policy. They are per-chip. The throttle event is
common for all cores in the chip.

Then why aren't they added on the policy->kobj instead, just like
cpufreq-stats? And maybe inside cpufreq-stats folder only?

That will solve many complexities you have in place here and will look
sane as well.

Right now, you have stats as two places, cpu/cpufreq/chip/ and
cpu/cpuX/cpufreq/stats/, which doesn't look wise and adds to
confusion.

What do you say?

Yes agree that it will be much cleaner with policy->kobj. But using policy->kobj
will result in multiple copies of the throttle-chip stats exported for each
policy in the chip. And moving it to cpu/cpuX/cpufreq/stats/
will add a dependency on CONFIG_CPU_FREQ_STAT

We want throttle attributes to be either in cpu/cpufreq or cpu/cpuX/cpufreq. If
multiple copies is not an issue, then I will move it to cpu/cpuX/cpufreq.

Thanks and Regards,
Shilpa