All of lore.kernel.org
 help / color / mirror / Atom feed
From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>,
	Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-pm@vger.kernel.org,
	Vincent Guittot <vincent.guittot@linaro.org>,
	linux@dominikbrodowski.net, linux-kernel@vger.kernel.org
Subject: [PATCH V3 9/9] cpufreq: Allow dynamic switching with CPUFREQ_ETERNAL latency
Date: Wed, 19 Jul 2017 15:42:49 +0530	[thread overview]
Message-ID: <a23708f8ff62f55ef6b8e67792224655c39b9786.1500373914.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1500373914.git.viresh.kumar@linaro.org>
In-Reply-To: <cover.1500373914.git.viresh.kumar@linaro.org>

With the recent updates, CPUFREQ_ETERNAL is only used by the drivers
which don't know their transition latency but want to use dynamic
switching.

Anyway, the routine cpufreq_policy_transition_delay_us() caps the value
of transition latency to 10 ms now and that can be used safely with such
platforms.

Remove the check from cpufreq_init_governor() and allow dynamic
switching for such configurations as well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/cpufreq.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a4d9b47c4af4..c7ae67d6886d 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2016,8 +2016,7 @@ static int cpufreq_init_governor(struct cpufreq_policy *policy)
 
 	/* Platform doesn't want dynamic frequency switching ? */
 	if (policy->governor->dynamic_switching &&
-	    (cpufreq_driver->flags & CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING ||
-	    policy->cpuinfo.transition_latency == CPUFREQ_ETERNAL)) {
+	    cpufreq_driver->flags & CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING) {
 		struct cpufreq_governor *gov = cpufreq_fallback_governor();
 
 		if (gov) {
-- 
2.13.0.71.gd7076ec9c9cb

  parent reply	other threads:[~2017-07-19 10:13 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-19 10:12 [PATCH V3 0/9] cpufreq: transition-latency cleanups Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 1/9] cpufreq: governor: Drop min_sampling_rate Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 2/9] cpufreq: Use transition_delay_us for legacy governors as well Viresh Kumar
2017-07-24 16:17   ` Peter Zijlstra
2017-07-28  4:48     ` Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 3/9] cpufreq: Cap the default transition delay value to 10 ms Viresh Kumar
2017-07-25 11:54   ` Leonard Crestez
2017-07-25 11:54     ` Leonard Crestez
2017-07-26  0:19     ` Rafael J. Wysocki
2017-07-26  6:06     ` Viresh Kumar
2017-07-27 16:54       ` Leonard Crestez
2017-07-27 16:54         ` Leonard Crestez
2017-07-28  5:28         ` Viresh Kumar
2017-08-01 17:48           ` Leonard Crestez
2017-08-01 17:48             ` Leonard Crestez
2017-08-02  3:23             ` Viresh Kumar
2017-08-16  6:34           ` Viresh Kumar
2017-08-16  9:42             ` Leonard Crestez
2017-08-16  9:42               ` Leonard Crestez
2017-08-17  3:38               ` Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 4/9] cpufreq: Don't set transition_latency for setpolicy drivers Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 5/9] cpufreq: arm_big_little: Make ->get_transition_latency() mandatory Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 6/9] cpufreq: Replace "max_transition_latency" with "dynamic_switching" Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 7/9] cpufreq: schedutil: Set dynamic_switching to true Viresh Kumar
2017-07-19 10:12 ` [PATCH V3 8/9] cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag Viresh Kumar
2017-07-19 16:30   ` Dominik Brodowski
2017-07-19 10:12 ` Viresh Kumar [this message]
2017-07-19 12:42 ` [PATCH V3 0/9] cpufreq: transition-latency cleanups Rafael J. Wysocki

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=a23708f8ff62f55ef6b8e67792224655c39b9786.1500373914.git.viresh.kumar@linaro.org \
    --to=viresh.kumar@linaro.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux@dominikbrodowski.net \
    --cc=rjw@rjwysocki.net \
    --cc=vincent.guittot@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.