From: Dave Jiang <dave.jiang@intel.com>
To: dan.j.williams@intel.com, ross.zwisler@linux.intel.com
Cc: linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org
Subject: [PATCH v5 3/4] libnvdimm: expose platform persistence attribute for nd_region
Date: Wed, 31 Jan 2018 12:45:49 -0700 [thread overview]
Message-ID: <151742794970.53525.17251272455889886797.stgit@djiang5-desk3.ch.intel.com> (raw)
In-Reply-To: <151742786907.53525.180738048776121385.stgit@djiang5-desk3.ch.intel.com>
Providing a sysfs attribute for nd_region that shows the persistence
capabilities for the platform.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
drivers/nvdimm/region_devs.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index abaf38c61220..e6d01911e092 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -528,6 +528,18 @@ static ssize_t resource_show(struct device *dev,
}
static DEVICE_ATTR_RO(resource);
+static ssize_t persistence_domain_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct nd_region *nd_region = to_nd_region(dev);
+ unsigned long flags = nd_region->flags;
+
+ return sprintf(buf, "%s%s\n",
+ flags & BIT(ND_REGION_PERSIST_CACHE) ? "cpu_cache " : "",
+ flags & BIT(ND_REGION_PERSIST_MEMCTRL) ? "memory_controller " : "");
+}
+static DEVICE_ATTR_RO(persistence_domain);
+
static struct attribute *nd_region_attributes[] = {
&dev_attr_size.attr,
&dev_attr_nstype.attr,
@@ -543,6 +555,7 @@ static struct attribute *nd_region_attributes[] = {
&dev_attr_init_namespaces.attr,
&dev_attr_badblocks.attr,
&dev_attr_resource.attr,
+ &dev_attr_persistence_domain.attr,
NULL,
};
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
WARNING: multiple messages have this Message-ID (diff)
From: Dave Jiang <dave.jiang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org
Cc: linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org
Subject: [PATCH v5 3/4] libnvdimm: expose platform persistence attribute for nd_region
Date: Wed, 31 Jan 2018 12:45:49 -0700 [thread overview]
Message-ID: <151742794970.53525.17251272455889886797.stgit@djiang5-desk3.ch.intel.com> (raw)
In-Reply-To: <151742786907.53525.180738048776121385.stgit-Cxk7aZI4ujnJARH06PadV2t3HXsI98Cx0E9HWUfgJXw@public.gmane.org>
Providing a sysfs attribute for nd_region that shows the persistence
capabilities for the platform.
Signed-off-by: Dave Jiang <dave.jiang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Reviewed-by: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
drivers/nvdimm/region_devs.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index abaf38c61220..e6d01911e092 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -528,6 +528,18 @@ static ssize_t resource_show(struct device *dev,
}
static DEVICE_ATTR_RO(resource);
+static ssize_t persistence_domain_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct nd_region *nd_region = to_nd_region(dev);
+ unsigned long flags = nd_region->flags;
+
+ return sprintf(buf, "%s%s\n",
+ flags & BIT(ND_REGION_PERSIST_CACHE) ? "cpu_cache " : "",
+ flags & BIT(ND_REGION_PERSIST_MEMCTRL) ? "memory_controller " : "");
+}
+static DEVICE_ATTR_RO(persistence_domain);
+
static struct attribute *nd_region_attributes[] = {
&dev_attr_size.attr,
&dev_attr_nstype.attr,
@@ -543,6 +555,7 @@ static struct attribute *nd_region_attributes[] = {
&dev_attr_init_namespaces.attr,
&dev_attr_badblocks.attr,
&dev_attr_resource.attr,
+ &dev_attr_persistence_domain.attr,
NULL,
};
next prev parent reply other threads:[~2018-01-31 19:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-31 19:45 [PATCH v5 0/4] add support for platform persistence capabilities Dave Jiang
2018-01-31 19:45 ` Dave Jiang
2018-01-31 19:45 ` [PATCH v5 1/4] acpi: nfit: Add support for detect platform CPU cache flush on power loss Dave Jiang
2018-01-31 19:45 ` Dave Jiang
2018-01-31 19:45 ` [PATCH v5 2/4] acpi: nfit: add persistent memory control flag for nd_region Dave Jiang
2018-01-31 19:45 ` Dave Jiang
2018-01-31 19:45 ` Dave Jiang [this message]
2018-01-31 19:45 ` [PATCH v5 3/4] libnvdimm: expose platform persistence attribute " Dave Jiang
2018-01-31 19:45 ` [PATCH v5 4/4] nfit-test: Add platform cap support from ACPI 6.2a to test Dave Jiang
2018-01-31 19:45 ` Dave Jiang
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=151742794970.53525.17251272455889886797.stgit@djiang5-desk3.ch.intel.com \
--to=dave.jiang@intel.com \
--cc=dan.j.williams@intel.com \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-nvdimm@lists.01.org \
--cc=ross.zwisler@linux.intel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.