From: "Nuno Sá" <noname.nuno@gmail.com>
To: "Andy Shevchenko" <andy.shevchenko@gmail.com>,
"Nuno Sá" <nuno.sa@analog.com>
Cc: linux-amlogic@lists.infradead.org, linux-imx@nxp.com,
linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org,
Heiko Stuebner <heiko@sntech.de>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Shawn Guo <shawnguo@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Jyoti Bhayana <jbhayana@google.com>,
Hans de Goede <hdegoede@redhat.com>,
Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Cixi Geng <cixi.geng1@unisoc.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Ciprian Regus <ciprian.regus@analog.com>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Alexandru Ardelean <aardelean@deviqon.com>,
Florian Boor <florian.boor@kernelconcepts.de>,
Michael Hennerich <Michael.Hennerich@analog.com>,
Orson Zhai <orsonzhai@gmail.com>, Chen-Yu Tsai <wens@csie.org>,
Chunyan Zhang <zhang.lyra@gmail.com>,
Vladimir Zapolskiy <vz@mleia.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Haibo Chen <haibo.chen@nxp.com>,
Kevin Hilman <khilman@baylibre.com>,
Jonathan Cameron <jic23@kernel.org>
Subject: Re: [PATCH v2 13/16] iio: core: introduce iio_device_{claim|release}_buffer_mode() APIs
Date: Wed, 05 Oct 2022 10:37:39 +0200 [thread overview]
Message-ID: <609d7e50d76a2a2aa2bbaddfed8a846c91854065.camel@gmail.com> (raw)
In-Reply-To: <CAHp75VfmMWonUV1jahbAmBZJixfdxA=ZAm-NNt7XiO+RDbupyg@mail.gmail.com>
On Tue, 2022-10-04 at 17:08 +0300, Andy Shevchenko wrote:
> On Tue, Oct 4, 2022 at 4:49 PM Nuno Sá <nuno.sa@analog.com> wrote:
> >
> > These APIs are analogous to iio_device_claim_direct_mode() and
> > iio_device_release_direct_mode() but, as the name suggests, with
> > the
> > logic flipped. While this looks odd enough, it will have at least
> > two
> > users (in following changes) and it will be important to move the
> > iio
> > mlock to the private struct.
>
> ...
>
> > +int iio_device_claim_buffer_mode(struct iio_dev *indio_dev)
> > +{
> > + mutex_lock(&indio_dev->mlock);
> > +
> > + if (iio_buffer_enabled(indio_dev))
>
> Do you need to annotate these two APIs to make sparse happy about
> locking balance?
>
> (Try to run `make W=1 C=1 ...` with your patches and look if any new
> warnings appear.)
make W=1 C=1 drivers/iio/industrialio-core.o
# UPD include/config/kernel.release
UPD include/generated/utsrelease.h
CALL scripts/checksyscalls.sh
CALL scripts/atomic/check-atomics.sh
CC drivers/iio/industrialio-core.o
CHECK drivers/iio/industrialio-core.c
drivers/iio/industrialio-core.c: note: in included file (through
include/linux/bitops.h, include/linux/kernel.h):
./include/asm-generic/bitops/generic-non-atomic.h:30:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:31:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:33:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:33:16: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:28:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:39:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:40:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:42:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:42:16: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:37:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:57:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:58:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:60:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:60:15: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:55:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:75:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:76:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:77:9: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:79:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:79:14: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:79:20: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:80:17: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:80:23: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:80:9: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:73:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:95:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:96:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:97:9: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:99:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:99:14: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:99:21: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:100:17: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:100:23: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:100:9: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:93:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:107:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:108:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:109:9: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:111:10: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:111:14: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:111:20: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:112:17: warning:
unreplaced symbol 'old'
./include/asm-generic/bitops/generic-non-atomic.h:112:23: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:112:9: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:105:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:128:9: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:121:1: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:168:9: warning:
unreplaced symbol 'p'
./include/asm-generic/bitops/generic-non-atomic.h:169:9: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:170:9: warning:
unreplaced symbol 'val'
./include/asm-generic/bitops/generic-non-atomic.h:172:19: warning:
unreplaced symbol 'val'
./include/asm-generic/bitops/generic-non-atomic.h:172:25: warning:
unreplaced symbol 'mask'
./include/asm-generic/bitops/generic-non-atomic.h:172:9: warning:
unreplaced symbol 'return'
./include/asm-generic/bitops/generic-non-atomic.h:166:1: warning:
unreplaced symbol 'return'
drivers/iio/industrialio-core.c:2100: warning: expecting prototype for
iio_device_claim_buffered_mode(). Prototype was for
iio_device_claim_buffer_mode() instead
Don't really see anything odd in here... Am I missing something?
Anyways, I guess you mean annotations as __acquires() and
__releases()... Well, this API is pretty much analogous to
iio_device_claim_direct_mode() which also don't have such annotations.
Thus, I would say to add them (if we are going too) in a future patch
to both APIs...
Also fine with adding them now if Jonathan feels it's necessary.
- Nuno Sá
next prev parent reply other threads:[~2022-10-05 8:36 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-04 13:48 [PATCH v2 00/16] Make 'mlock' really private Nuno Sá
2022-10-04 13:48 ` [PATCH v2 01/16] iio: adc: ad799x: do not use internal iio_dev lock Nuno Sá
2022-10-09 11:53 ` Jonathan Cameron
2022-10-04 13:48 ` [PATCH v2 02/16] iio: adc: axp288_adc: " Nuno Sá
2022-10-09 11:55 ` Jonathan Cameron
2022-10-04 13:48 ` [PATCH v2 03/16] iio: adc: imx7d_adc: " Nuno Sá
2022-10-09 2:00 ` Bough Chen
2022-10-09 11:56 ` Jonathan Cameron
2022-10-04 13:48 ` [PATCH v2 04/16] iio: adc: lpc32xx_adc: " Nuno Sá
2022-10-09 11:57 ` Jonathan Cameron
2022-10-04 13:48 ` [PATCH v2 05/16] iio: adc: ltc2947-core: " Nuno Sá
2022-10-09 11:58 ` Jonathan Cameron
2022-10-04 13:48 ` [PATCH v2 06/16] iio: adc: meson_saradc: " Nuno Sá
2022-10-09 12:01 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 07/16] iio: adc: rockchip_saradc: " Nuno Sá
[not found] ` <1803833.atdPhlSkOF@diego>
2022-10-09 12:03 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 08/16] iio: adc: sc27xx_adc: " Nuno Sá
2022-10-09 12:05 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 09/16] iio: adc: vf610_adc: add helper function to read samples Nuno Sá
2022-10-09 2:10 ` Bough Chen
2022-10-04 13:49 ` [PATCH v2 10/16] iio: adc: vf610_adc: vf610_adc: do not use internal iio_dev lock Nuno Sá
2022-10-09 2:10 ` Bough Chen
2022-10-04 13:49 ` [PATCH v2 11/16] iio: common: scmi_iio: " Nuno Sá
2022-10-09 12:09 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 12/16] iio: gyro: itg3200_core: " Nuno Sá
2022-10-09 12:10 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 13/16] iio: core: introduce iio_device_{claim|release}_buffer_mode() APIs Nuno Sá
2022-10-04 14:08 ` Andy Shevchenko
2022-10-05 8:37 ` Nuno Sá [this message]
2022-10-09 11:41 ` Jonathan Cameron
2022-10-10 7:03 ` Nuno Sá
2022-10-04 13:49 ` [PATCH v2 14/16] iio: health: max30100: do not use internal iio_dev lock Nuno Sá
2022-10-04 14:13 ` Andy Shevchenko
2022-10-05 8:09 ` Nuno Sá
2022-10-09 12:14 ` Jonathan Cameron
2022-10-04 13:49 ` [PATCH v2 15/16] iio: health: max30102: " Nuno Sá
2022-10-04 14:15 ` Andy Shevchenko
2022-10-05 8:17 ` Nuno Sá
2022-10-09 11:44 ` Jonathan Cameron
2022-10-09 12:16 ` Jonathan Cameron
2022-10-10 7:08 ` Nuno Sá
2022-10-04 13:49 ` [PATCH v2 16/16] iio: core: move 'mlock' to 'struct iio_dev_opaque' Nuno Sá
2022-10-04 14:21 ` Andy Shevchenko
2022-10-05 8:40 ` Nuno Sá
2022-10-09 11:48 ` Jonathan Cameron
2022-10-09 11:52 ` Jonathan Cameron
2022-10-10 8:30 ` Andy Shevchenko
2022-10-09 12:19 ` Jonathan Cameron
2022-10-10 7:11 ` Nuno Sá
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