From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>
Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
stefan.wahren@i2se.com, nm@ti.com,
linux-arm-kernel@lists.infradead.org, sudeep.holla@arm.com,
Viresh Kumar <viresh.kumar@linaro.org>
Subject: [PATCH 2/8] opp: don't match for existing OPPs when list is empty
Date: Tue, 25 Nov 2014 16:04:17 +0530 [thread overview]
Message-ID: <e4f750979598b20b02730f08720f2020e8a0dd0b.1416910766.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1416910766.git.viresh.kumar@linaro.org>
In-Reply-To: <cover.1416910766.git.viresh.kumar@linaro.org>
OPP list is guaranteed to be empty when 'dev_opp' is created. And so we don't
need to run the comparison loop with existing OPPs.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/base/power/opp.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index 76ae6fd..a333e2ef 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -417,6 +417,12 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
/* Hold our list modification lock here */
mutex_lock(&dev_opp_list_lock);
+ /* populate the opp table */
+ new_opp->dev_opp = dev_opp;
+ new_opp->rate = freq;
+ new_opp->u_volt = u_volt;
+ new_opp->available = true;
+
/* Check for existing list for 'dev' */
dev_opp = find_device_opp(dev);
if (IS_ERR(dev_opp)) {
@@ -441,14 +447,10 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
/* Secure the device list modification */
list_add_rcu(&dev_opp->node, &dev_opp_list);
+ head = &dev_opp->opp_list;
+ goto list_add;
}
- /* populate the opp table */
- new_opp->dev_opp = dev_opp;
- new_opp->rate = freq;
- new_opp->u_volt = u_volt;
- new_opp->available = true;
-
/*
* Insert new OPP in order of increasing frequency
* and discard if already present
@@ -474,6 +476,7 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
return ret;
}
+list_add:
list_add_rcu(&new_opp->node, head);
mutex_unlock(&dev_opp_list_lock);
--
2.0.3.693.g996b0fd
next prev parent reply other threads:[~2014-11-25 10:35 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-25 10:34 [PATCH 0/8] OPP: Remove OPPs when not in use Viresh Kumar
2014-11-25 10:34 ` [PATCH 1/8] opp: rename 'head' as 'rcu_head' or 'srcu_head' based on its type Viresh Kumar
2014-11-25 10:34 ` Viresh Kumar [this message]
2014-11-25 10:34 ` [PATCH 3/8] opp: mark OPPs as 'static' or 'dynamic' Viresh Kumar
2014-11-25 10:34 ` [PATCH 4/8] opp: Introduce APIs to remove OPPs Viresh Kumar
2014-11-25 16:24 ` Paul E. McKenney
2014-11-25 17:16 ` Viresh Kumar
2014-11-25 17:39 ` Paul E. McKenney
2014-11-26 6:29 ` Viresh Kumar
2014-11-26 9:17 ` Viresh Kumar
2014-11-26 22:32 ` Rafael J. Wysocki
2014-11-27 0:26 ` Viresh Kumar
2014-11-27 0:48 ` Rafael J. Wysocki
[not found] ` <1407c1d67e546a09f5dd122de943de45bcd3c846.1417058376.git.viresh.kumar@linaro.org>
2014-11-27 3:24 ` [PATCH V2 " Viresh Kumar
2014-12-01 23:25 ` Paul E. McKenney
2014-11-27 3:24 ` [PATCH V1 5/8] opp: replace kfree_rcu() with call_srcu() in opp_set_availability() Viresh Kumar
2014-11-25 10:34 ` [PATCH 5/8] arm_big_little: free OPP table created during ->init() Viresh Kumar
2014-12-01 7:11 ` Viresh Kumar
2014-12-01 22:37 ` Rafael J. Wysocki
2014-12-02 3:46 ` Viresh Kumar
2014-11-25 10:34 ` [PATCH 6/8] cpufreq-dt: " Viresh Kumar
2014-11-25 20:15 ` Stefan Wahren
2014-11-25 10:34 ` [PATCH 7/8] exynos5440: " Viresh Kumar
2014-11-25 10:34 ` [PATCH 8/8] imx6q: " Viresh Kumar
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=e4f750979598b20b02730f08720f2020e8a0dd0b.1416910766.git.viresh.kumar@linaro.org \
--to=viresh.kumar@linaro.org \
--cc=linaro-kernel@lists.linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-pm@vger.kernel.org \
--cc=nm@ti.com \
--cc=rjw@rjwysocki.net \
--cc=stefan.wahren@i2se.com \
--cc=sudeep.holla@arm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).