From: Dan Williams <dan.j.williams@intel.com>
To: "Dan Williams" <dan.j.williams@intel.com>,
"Dave Jiang" <dave.jiang@intel.com>,
"Marek Behún" <kabel@kernel.org>,
linux-kernel@vger.kernel.org,
"Hans de Goede" <hdegoede@redhat.com>,
"Matti Vaittinen" <mazziesaccount@gmail.com>
Cc: "Horia Geantă" <horia.geanta@nxp.com>,
"Pankaj Gupta" <pankaj.gupta@nxp.com>,
"Gaurav Jain" <gaurav.jain@nxp.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
"Davidlohr Bueso" <dave@stgolabs.net>,
"Jonathan Cameron" <jonathan.cameron@huawei.com>,
"Alison Schofield" <alison.schofield@intel.com>,
"Vishal Verma" <vishal.l.verma@intel.com>,
"Ira Weiny" <ira.weiny@intel.com>,
"Dan Williams" <dan.j.williams@intel.com>,
"Bamvor Jian Zhang" <bamv2005@gmail.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Bartosz Golaszewski" <brgl@bgdev.pl>,
"Douglas Anderson" <dianders@chromium.org>,
"Andrzej Hajda" <andrzej.hajda@intel.com>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Robert Foss" <rfoss@kernel.org>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@gmail.com>,
"Daniel Vetter" <daniel@ffwll.ch>, "James Seo" <james@equiv.tech>,
"Jean Delvare" <jdelvare@suse.com>,
"Guenter Roeck" <linux@roeck-us.net>,
linux-crypto@vger.kernel.org, linux-cxl@vger.kernel.org,
linux-gpio@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-hwmon@vger.kernel.org
Subject: Re: [PATCH 2/2] devm-helpers: Add resource managed version of debugfs directory create function
Date: Thu, 22 Feb 2024 10:25:15 -0800 [thread overview]
Message-ID: <65d7918b358a5_1ee3129432@dwillia2-mobl3.amr.corp.intel.com.notmuch> (raw)
In-Reply-To: <65d78e55844c1_1ee312946a@dwillia2-mobl3.amr.corp.intel.com.notmuch>
Dan Williams wrote:
> Dave Jiang wrote:
> >
> >
> > On 2/22/24 7:58 AM, Marek Behún wrote:
> > > A few drivers register a devm action to remove a debugfs directory,
> > > implementing a one-liner function that calls debufs_remove_recursive().
> > > Help drivers avoid this repeated implementations by adding managed
> > > version of debugfs directory create function.
> > >
> > > Use the new function devm_debugfs_create_dir() in the following
> > > drivers:
> > > drivers/crypto/caam/ctrl.c
> > > drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > > drivers/hwmon/hp-wmi-sensors.c
> > > drivers/hwmon/mr75203.c
> > > drivers/hwmon/pmbus/pmbus_core.c
> > >
> > > Also use the action function devm_debugfs_dir_recursive_drop() in
> > > drivers
> > > drivers/cxl/mem.c
> > > drivers/gpio/gpio-mockup.c
> > >
> > > Signed-off-by: Marek Behún <kabel@kernel.org>
> > > ---
> > > drivers/crypto/caam/ctrl.c | 16 +++------
> > > drivers/cxl/mem.c | 9 ++---
> > > drivers/gpio/gpio-mockup.c | 11 ++----
> > > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 13 ++------
> > > drivers/hwmon/hp-wmi-sensors.c | 15 ++-------
> > > drivers/hwmon/mr75203.c | 15 +++------
> > > drivers/hwmon/pmbus/pmbus_core.c | 16 +++------
> > > include/linux/devm-helpers.h | 48 +++++++++++++++++++++++++++
> > > 8 files changed, 72 insertions(+), 71 deletions(-)
> > >
[..]
> > diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
> > index 5303d6942b88..b6f13ba87927 100644
> > --- a/drivers/cxl/cxlmem.h
> > +++ b/drivers/cxl/cxlmem.h
> > @@ -859,6 +859,5 @@ struct cxl_hdm {
> > };
> >
> > struct seq_file;
> > -struct dentry *cxl_debugfs_create_dir(const char *dir);
> > void cxl_dpa_debug(struct seq_file *file, struct cxl_dev_state *cxlds);
> > #endif /* __CXL_MEM_H__ */
> > diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
> > index c5c9d8e0d88d..494abe7a54c5 100644
> > --- a/drivers/cxl/mem.c
> > +++ b/drivers/cxl/mem.c
> > @@ -4,6 +4,7 @@
> > #include <linux/device.h>
> > #include <linux/module.h>
> > #include <linux/pci.h>
> > +#include <linux/devm-helpers.h>
> >
> > #include "cxlmem.h"
> > #include "cxlpci.h"
> > @@ -30,11 +31,6 @@ static void enable_suspend(void *data)
> > cxl_mem_active_dec();
> > }
> >
> > -static void remove_debugfs(void *dentry)
> > -{
> > - debugfs_remove_recursive(dentry);
> > -}
> > -
> > static int cxl_mem_dpa_show(struct seq_file *file, void *data)
> > {
> > struct device *dev = file->private;
> > @@ -128,7 +124,10 @@ static int cxl_mem_probe(struct device *dev)
> > if (work_pending(&cxlmd->detach_work))
> > return -EBUSY;
> >
> > - dentry = cxl_debugfs_create_dir(dev_name(dev));
> > + dentry = devm_debugfs_create_dir(dev, dev_name(dev), NULL);
> > + if (IS_ERR(dentry))
> > + return PTR_ERR(dentry);
> > +
>
> No that loses the "cxl" prefix.
So, to be clear, I do see the benefit of removing the
devm_add_action_or_reset() call altogether, but that work is a bit
deeper and should not be tied with all these other cleanups. So I think
from the CXL perspective, please drop these CXL changes out of this
patch. Follow up with a standalone patch, or leave it to drivers/cxl/
folks to create that deeper cleanup.
next prev parent reply other threads:[~2024-02-22 18:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 14:58 [PATCH 1/2] devm-helpers: Add resource managed version of mutex init Marek Behún
2024-02-22 14:58 ` [PATCH 2/2] devm-helpers: Add resource managed version of debugfs directory create function Marek Behún
2024-02-22 15:23 ` Guenter Roeck
2024-02-22 17:23 ` Dave Jiang
2024-02-22 18:11 ` Dan Williams
2024-02-22 18:25 ` Dan Williams [this message]
2024-02-22 15:11 ` [PATCH 1/2] devm-helpers: Add resource managed version of mutex init Bartosz Golaszewski
2024-02-22 15:24 ` Guenter Roeck
2024-02-22 16:03 ` Guenter Roeck
2024-02-22 16:44 ` Matthew Auld
2024-02-22 18:33 ` Hans de Goede
2024-02-22 21:42 ` andy.shevchenko
2024-02-23 12:26 ` Marek Behún
2024-02-28 0:27 ` George Stark
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