From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Jonathan Corbet <corbet@lwn.net>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
Jean Delvare <jdelvare@suse.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hwmon@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: Re: [PATCH v2 6/6] hwmon: pmbus: use more devres helpers
Date: Thu, 2 Jul 2020 14:44:19 +0200 [thread overview]
Message-ID: <20200702124419.GB1882489@kroah.com> (raw)
In-Reply-To: <20200629065008.27620-7-brgl@bgdev.pl>
On Mon, Jun 29, 2020 at 08:50:08AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
>
> Shrink pmbus code by using devm_hwmon_device_register_with_groups()
> and devm_krealloc() instead of their non-managed variants.
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
> drivers/hwmon/pmbus/pmbus_core.c | 28 +++++++++-------------------
> 1 file changed, 9 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
> index a420877ba533..225d0ac162c7 100644
> --- a/drivers/hwmon/pmbus/pmbus_core.c
> +++ b/drivers/hwmon/pmbus/pmbus_core.c
> @@ -1022,9 +1022,9 @@ static int pmbus_add_attribute(struct pmbus_data *data, struct attribute *attr)
> {
> if (data->num_attributes >= data->max_attributes - 1) {
> int new_max_attrs = data->max_attributes + PMBUS_ATTR_ALLOC_SIZE;
> - void *new_attrs = krealloc(data->group.attrs,
> - new_max_attrs * sizeof(void *),
> - GFP_KERNEL);
> + void *new_attrs = devm_krealloc(data->dev, data->group.attrs,
> + new_max_attrs * sizeof(void *),
> + GFP_KERNEL);
dynamic sysfs attributes in a devm-allocated chunk of memory? What
could go wrong...
Anyway, is this the only in-kernel user that you could find for this
function? If so, it feels like it's a lot of extra work for no real
gain.
thanks,
greg k-h
next prev parent reply other threads:[~2020-07-02 12:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-29 6:50 [PATCH v2 0/6] devres: provide and use devm_krealloc() Bartosz Golaszewski
2020-06-29 6:50 ` [PATCH v2 1/6] devres: remove stray space from devm_kmalloc() definition Bartosz Golaszewski
2020-06-29 6:50 ` [PATCH v2 2/6] devres: move the size check from alloc_dr() into a separate function Bartosz Golaszewski
2020-06-29 6:50 ` [PATCH v2 3/6] device: remove 'extern' attribute from function prototypes in device.h Bartosz Golaszewski
2020-06-29 6:50 ` [PATCH v2 4/6] devres: handle zero size in devm_kmalloc() Bartosz Golaszewski
2020-07-10 13:46 ` Jon Hunter
2020-07-10 16:03 ` Bartosz Golaszewski
2020-07-10 16:11 ` Jon Hunter
2020-07-10 16:24 ` Bartosz Golaszewski
2020-07-10 16:30 ` Jon Hunter
2021-04-11 3:21 ` Dmitry Torokhov
2021-04-12 19:23 ` Bartosz Golaszewski
2020-06-29 6:50 ` [PATCH v2 5/6] devres: provide devm_krealloc() Bartosz Golaszewski
2020-07-02 12:42 ` Greg Kroah-Hartman
2020-07-02 13:11 ` Bartosz Golaszewski
2020-07-06 16:38 ` Bartosz Golaszewski
2020-07-06 16:41 ` Greg Kroah-Hartman
2020-07-10 13:32 ` Greg Kroah-Hartman
2020-06-29 6:50 ` [PATCH v2 6/6] hwmon: pmbus: use more devres helpers Bartosz Golaszewski
2020-06-29 16:32 ` Guenter Roeck
2020-07-02 12:44 ` Greg Kroah-Hartman [this message]
2020-07-02 13:06 ` Bartosz Golaszewski
2020-07-02 14:29 ` Guenter Roeck
2020-07-02 12:44 ` [PATCH v2 0/6] devres: provide and use devm_krealloc() Greg Kroah-Hartman
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