From: "Artur Świgoń" <a.swigon@samsung.com>
To: Chanwoo Choi <cw00.choi@samsung.com>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: "Artur Świgoń" <a.swigon@samsung.com>,
myungjoo.ham@samsung.com, inki.dae@samsung.com,
sw0312.kim@samsung.com, georgi.djakov@linaro.org,
leonard.crestez@nxp.com, m.szyprowski@samsung.com,
b.zolnierkie@samsung.com, krzk@kernel.org
Subject: Re: [RFC PATCH v2 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init()
Date: Wed, 25 Sep 2019 07:44:35 +0200 [thread overview]
Message-ID: <f51aac4cacb7a0196ab6919b110ad9fcf4009c88.camel@samsung.com> (raw)
In-Reply-To: <2e49bd2c-e074-038b-f8a2-7dd8dea4a9af@samsung.com>
Hi,
On Fri, 2019-09-20 at 11:15 +0900, Chanwoo Choi wrote:
> Hi,
>
> As I already replied on v1, patch1/2/3 clean-up code
> for readability without any behavior changes.
>
> I think that you better to merge patch1/2/3 to one patch.
Yes, when writing the cover letter I think I forgot to explain why I decided not
to merge these patches. Basically, none of the diff algorithms available in git
(I've got v2.17.1) is able to produce a readable patch with these changes
combined together into a single patch (functions are intermixed together in the
output, git thinks that 'exynos_bus_probe' is a new function).
Please take a look at the diff at the bottom of this message to see how patches
01..03 look when combined. If such patch looks acceptable to you, I can merge.
> On 19. 9. 19. 오후 11:22, Artur Świgoń wrote:
> > From: Artur Świgoń <a.swigon@partner.samsung.com>
> >
> > This patch adds a new static function, exynos_bus_profile_init(), extracted
> > from exynos_bus_probe().
> >
> > Signed-off-by: Artur Świgoń <a.swigon@partner.samsung.com>
> > ---
> > drivers/devfreq/exynos-bus.c | 92 +++++++++++++++++++++---------------
> > 1 file changed, 53 insertions(+), 39 deletions(-)
> >
> > diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> > index 29f422469960..78f38b7fb596 100644
> > --- a/drivers/devfreq/exynos-bus.c
> > +++ b/drivers/devfreq/exynos-bus.c
> > @@ -287,12 +287,62 @@ static int exynos_bus_parse_of(struct device_node *np,
> > return ret;
> > }
> >
> > +static int exynos_bus_profile_init(struct exynos_bus *bus,
> > + struct devfreq_dev_profile *profile)
> > +{
> > + struct device *dev = bus->dev;
> > + struct devfreq_simple_ondemand_data *ondemand_data;
> > + int ret;
> > +
> > + /* Initialize the struct profile and governor data for parent device */
> > + profile->polling_ms = 50;
> > + profile->target = exynos_bus_target;
> > + profile->get_dev_status = exynos_bus_get_dev_status;
> > + profile->exit = exynos_bus_exit;
> > +
> > + ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> > + if (!ondemand_data) {
> > + ret = -ENOMEM;
> > + goto err;
> > + }
> > + ondemand_data->upthreshold = 40;
> > + ondemand_data->downdifferential = 5;
> > +
> > + /* Add devfreq device to monitor and handle the exynos bus */
> > + bus->devfreq = devm_devfreq_add_device(dev, profile,
> > + DEVFREQ_GOV_SIMPLE_ONDEMAND,
> > + ondemand_data);
> > + if (IS_ERR(bus->devfreq)) {
> > + dev_err(dev, "failed to add devfreq device\n");
> > + ret = PTR_ERR(bus->devfreq);
> > + goto err;
> > + }
> > +
> > + /*
> > + * Enable devfreq-event to get raw data which is used to determine
> > + * current bus load.
> > + */
> > + ret = exynos_bus_enable_edev(bus);
> > + if (ret < 0) {
> > + dev_err(dev, "failed to enable devfreq-event devices\n");
> > + goto err;
> > + }
> > +
> > + ret = exynos_bus_set_event(bus);
> > + if (ret < 0) {
> > + dev_err(dev, "failed to set event to devfreq-event devices\n");
> > + goto err;
> > + }
> > +
> > +err:
> > + return ret;
> > +}
> > +
> > static int exynos_bus_probe(struct platform_device *pdev)
> > {
> > struct device *dev = &pdev->dev;
> > struct device_node *np = dev->of_node, *node;
> > struct devfreq_dev_profile *profile;
> > - struct devfreq_simple_ondemand_data *ondemand_data;
> > struct devfreq_passive_data *passive_data;
> > struct devfreq *parent_devfreq;
> > struct exynos_bus *bus;
> > @@ -334,45 +384,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
> > if (passive)
> > goto passive;
> >
> > - /* Initialize the struct profile and governor data for parent device */
> > - profile->polling_ms = 50;
> > - profile->target = exynos_bus_target;
> > - profile->get_dev_status = exynos_bus_get_dev_status;
> > - profile->exit = exynos_bus_exit;
> > -
> > - ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> > - if (!ondemand_data) {
> > - ret = -ENOMEM;
> > + ret = exynos_bus_profile_init(bus, profile);
> > + if (ret < 0)
> > goto err;
> > - }
> > - ondemand_data->upthreshold = 40;
> > - ondemand_data->downdifferential = 5;
> > -
> > - /* Add devfreq device to monitor and handle the exynos bus */
> > - bus->devfreq = devm_devfreq_add_device(dev, profile,
> > - DEVFREQ_GOV_SIMPLE_ONDEMAND,
> > - ondemand_data);
> > - if (IS_ERR(bus->devfreq)) {
> > - dev_err(dev, "failed to add devfreq device\n");
> > - ret = PTR_ERR(bus->devfreq);
> > - goto err;
> > - }
> > -
> > - /*
> > - * Enable devfreq-event to get raw data which is used to determine
> > - * current bus load.
> > - */
> > - ret = exynos_bus_enable_edev(bus);
> > - if (ret < 0) {
> > - dev_err(dev, "failed to enable devfreq-event devices\n");
> > - goto err;
> > - }
> > -
> > - ret = exynos_bus_set_event(bus);
> > - if (ret < 0) {
> > - dev_err(dev, "failed to set event to devfreq-event devices\n");
> > - goto err;
> > - }
> >
> > goto out;
> > passive:
commit cacf8e4ea0e111908d11779977c81e29d6418801
Author: Artur Świgoń <a.swigon@partner.samsung.com>
Date: Tue Aug 27 13:17:28 2019 +0200
tmp: merge patches 01-03
Signed-off-by: Artur Świgoń <a.swigon@partner.samsung.com>
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 29f422469960..60ad4319fd80 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -287,52 +287,12 @@ static int exynos_bus_parse_of(struct device_node *np,
return ret;
}
-static int exynos_bus_probe(struct platform_device *pdev)
+static int exynos_bus_profile_init(struct exynos_bus *bus,
+ struct devfreq_dev_profile *profile)
{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node, *node;
- struct devfreq_dev_profile *profile;
+ struct device *dev = bus->dev;
struct devfreq_simple_ondemand_data *ondemand_data;
- struct devfreq_passive_data *passive_data;
- struct devfreq *parent_devfreq;
- struct exynos_bus *bus;
- int ret, max_state;
- unsigned long min_freq, max_freq;
- bool passive = false;
-
- if (!np) {
- dev_err(dev, "failed to find devicetree node\n");
- return -EINVAL;
- }
-
- bus = devm_kzalloc(&pdev->dev, sizeof(*bus), GFP_KERNEL);
- if (!bus)
- return -ENOMEM;
- mutex_init(&bus->lock);
- bus->dev = &pdev->dev;
- platform_set_drvdata(pdev, bus);
-
- profile = devm_kzalloc(dev, sizeof(*profile), GFP_KERNEL);
- if (!profile)
- return -ENOMEM;
-
- node = of_parse_phandle(dev->of_node, "devfreq", 0);
- if (node) {
- of_node_put(node);
- passive = true;
- } else {
- ret = exynos_bus_parent_parse_of(np, bus);
- if (ret < 0)
- return ret;
- }
-
- /* Parse the device-tree to get the resource information */
- ret = exynos_bus_parse_of(np, bus);
- if (ret < 0)
- goto err_reg;
-
- if (passive)
- goto passive;
+ int ret;
/* Initialize the struct profile and governor data for parent device */
profile->polling_ms = 50;
@@ -374,8 +334,18 @@ static int exynos_bus_probe(struct platform_device *pdev)
goto err;
}
- goto out;
-passive:
+err:
+ return ret;
+}
+
+static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
+ struct devfreq_dev_profile *profile)
+{
+ struct device *dev = bus->dev;
+ struct devfreq_passive_data *passive_data;
+ struct devfreq *parent_devfreq;
+ int ret = 0;
+
/* Initialize the struct profile and governor data for passive device */
profile->target = exynos_bus_target;
profile->exit = exynos_bus_passive_exit;
@@ -404,7 +374,59 @@ static int exynos_bus_probe(struct platform_device *pdev)
goto err;
}
-out:
+err:
+ return ret;
+}
+
+static int exynos_bus_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node, *node;
+ struct devfreq_dev_profile *profile;
+ struct exynos_bus *bus;
+ int ret, max_state;
+ unsigned long min_freq, max_freq;
+ bool passive = false;
+
+ if (!np) {
+ dev_err(dev, "failed to find devicetree node\n");
+ return -EINVAL;
+ }
+
+ bus = devm_kzalloc(&pdev->dev, sizeof(*bus), GFP_KERNEL);
+ if (!bus)
+ return -ENOMEM;
+ mutex_init(&bus->lock);
+ bus->dev = &pdev->dev;
+ platform_set_drvdata(pdev, bus);
+
+ profile = devm_kzalloc(dev, sizeof(*profile), GFP_KERNEL);
+ if (!profile)
+ return -ENOMEM;
+
+ node = of_parse_phandle(dev->of_node, "devfreq", 0);
+ if (node) {
+ of_node_put(node);
+ passive = true;
+ } else {
+ ret = exynos_bus_parent_parse_of(np, bus);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* Parse the device-tree to get the resource information */
+ ret = exynos_bus_parse_of(np, bus);
+ if (ret < 0)
+ goto err_reg;
+
+ if (passive)
+ ret = exynos_bus_profile_init_passive(bus, profile);
+ else
+ ret = exynos_bus_profile_init(bus, profile);
+
+ if (ret < 0)
+ goto err;
+
max_state = bus->devfreq->profile->max_state;
min_freq = (bus->devfreq->profile->freq_table[0] / 1000);
max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);
next prev parent reply other threads:[~2019-09-25 5:44 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190919142321eucas1p164c2591ad402427cb71fd00c348a29ec@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 00/11] Simple QoS for exynos-bus driver using interconnect Artur Świgoń
[not found] ` <CGME20190919142322eucas1p24bc477ee6e1bcd65546c305d55af097d@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init() Artur Świgoń
2019-09-20 2:15 ` Chanwoo Choi
2019-09-25 5:44 ` Artur Świgoń [this message]
2019-09-25 6:37 ` Chanwoo Choi
2019-09-25 6:41 ` Artur Świgoń
[not found] ` <CGME20190919142322eucas1p1949ad95468af26698c4c5addc060ce00@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 02/11] devfreq: exynos-bus: Extract exynos_bus_profile_init_passive() Artur Świgoń
[not found] ` <CGME20190919142323eucas1p2fc73a765389432f880fa28945fd28975@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 03/11] devfreq: exynos-bus: Change goto-based logic to if-else logic Artur Świgoń
[not found] ` <CGME20190919142324eucas1p1638cec2aafbfcaf03cfdfa7d0189143a@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 04/11] devfreq: exynos-bus: Clean up code Artur Świgoń
2019-09-20 2:22 ` Chanwoo Choi
2019-10-03 8:10 ` Artur Świgoń
[not found] ` <CGME20190919142325eucas1p28102446c22b1e1c61aae0bad46d079b0@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 05/11] interconnect: Export of_icc_get_from_provider() Artur Świgoń
2019-12-16 0:57 ` Chanwoo Choi
[not found] ` <CGME20190919142326eucas1p204819014fe85716b47e2de4af9102cd5@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 06/11] interconnect: Relax requirement in of_icc_get_from_provider() Artur Świgoń
[not found] ` <CGME20190919142327eucas1p183470eede07b50c1e3acda58f2af1eba@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 07/11] interconnect: Relax condition in apply_constraints() Artur Świgoń
[not found] ` <CGME20190919142329eucas1p299762f99dd55a5d625633ceec84219f9@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412 Artur Świgoń
2019-12-16 0:51 ` Chanwoo Choi
2019-12-16 2:59 ` Chanwoo Choi
2019-12-18 10:17 ` Artur Świgoń
2019-12-18 10:29 ` Chanwoo Choi
2019-12-18 10:41 ` Artur Świgoń
2019-12-16 0:55 ` Chanwoo Choi
2019-12-16 0:57 ` Chanwoo Choi
[not found] ` <CGME20190919142329eucas1p2e53992eab9ec6b404f716f955b3c228e@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 09/11] devfreq: exynos-bus: Add interconnect functionality to exynos-bus Artur Świgoń
2019-09-25 7:03 ` Chanwoo Choi
2019-09-25 7:12 ` Artur Świgoń
2019-12-02 17:05 ` Artur Świgoń
2019-12-05 2:36 ` Chanwoo Choi
2019-12-16 0:44 ` Chanwoo Choi
2019-12-18 10:18 ` Artur Świgoń
2019-12-18 10:39 ` Chanwoo Choi
2019-12-18 10:48 ` Artur Świgoń
2019-12-18 11:08 ` Chanwoo Choi
[not found] ` <CGME20190919142330eucas1p1eceae78b148a03f2af71657b7cdd6694@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 10/11] arm: dts: exynos: Add interconnects to Exynos4412 mixer Artur Świgoń
[not found] ` <CGME20190919142331eucas1p2107a7cb9ce8b3817ed171c21a8ad5b00@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 11/11] drm: exynos: mixer: Add interconnect support Artur Świgoń
2019-09-20 1:07 ` [RFC PATCH v2 00/11] Simple QoS for exynos-bus driver using interconnect Chanwoo Choi
2019-09-20 2:14 ` Chanwoo Choi
2019-09-25 5:47 ` Artur Świgoń
2019-09-25 6:12 ` Chanwoo Choi
2019-09-25 6:37 ` Artur Świgoń
2019-09-25 6:48 ` Chanwoo Choi
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=f51aac4cacb7a0196ab6919b110ad9fcf4009c88.camel@samsung.com \
--to=a.swigon@samsung.com \
--cc=b.zolnierkie@samsung.com \
--cc=cw00.choi@samsung.com \
--cc=devicetree@vger.kernel.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=georgi.djakov@linaro.org \
--cc=inki.dae@samsung.com \
--cc=krzk@kernel.org \
--cc=leonard.crestez@nxp.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=myungjoo.ham@samsung.com \
--cc=sw0312.kim@samsung.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).