From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: [PATCH] cpuidle: sysfs: Export target residency information Date: Mon, 17 Mar 2014 12:17:30 +0100 Message-ID: <1395055050-27729-1-git-send-email-daniel.lezcano@linaro.org> Return-path: Received: from mail-wi0-f177.google.com ([209.85.212.177]:61872 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932658AbaCQLRZ (ORCPT ); Mon, 17 Mar 2014 07:17:25 -0400 Received: by mail-wi0-f177.google.com with SMTP id cc10so1968149wib.4 for ; Mon, 17 Mar 2014 04:17:24 -0700 (PDT) Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: rjw@rjwysocki.net, lenb@kernel.org Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org >>From userspace, there is no way to know the target residency for each idle state. If we want to write tools to measure the accuracy of the idle state selection from the governor, we need this info. As the exit latency is exported through sysfs, exporting the target residency in the same place makes sense. Signed-off-by: Daniel Lezcano --- drivers/cpuidle/sysfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index e918b6d..efe2f17 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -293,6 +293,7 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \ } define_show_state_function(exit_latency) +define_show_state_function(target_residency) define_show_state_function(power_usage) define_show_state_ull_function(usage) define_show_state_ull_function(time) @@ -304,6 +305,7 @@ define_store_state_ull_function(disable) define_one_state_ro(name, show_state_name); define_one_state_ro(desc, show_state_desc); define_one_state_ro(latency, show_state_exit_latency); +define_one_state_ro(residency, show_state_target_residency); define_one_state_ro(power, show_state_power_usage); define_one_state_ro(usage, show_state_usage); define_one_state_ro(time, show_state_time); @@ -313,6 +315,7 @@ static struct attribute *cpuidle_state_default_attrs[] = { &attr_name.attr, &attr_desc.attr, &attr_latency.attr, + &attr_residency.attr, &attr_power.attr, &attr_usage.attr, &attr_time.attr, -- 1.7.9.5