From: Toshi Kani <toshi.kani@hp.com>
To: rjw@sisk.pl, lenb@kernel.org, gregkh@linuxfoundation.org,
akpm@linux-foundation.org
Cc: linux-s390@vger.kernel.org, Toshi Kani <toshi.kani@hp.com>,
jiang.liu@huawei.com, wency@cn.fujitsu.com, linux-mm@kvack.org,
yinghai@kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, isimatu.yasuaki@jp.fujitsu.com,
srivatsa.bhat@linux.vnet.ibm.com, guohanjun@huawei.com,
bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org
Subject: [RFC PATCH v2 11/12] cpu: Update sysfs cpu/online for hotplug framework
Date: Thu, 10 Jan 2013 16:40:29 -0700 [thread overview]
Message-ID: <1357861230-29549-12-git-send-email-toshi.kani@hp.com> (raw)
In-Reply-To: <1357861230-29549-1-git-send-email-toshi.kani@hp.com>
Changed store_online() to request a cpu online or offline
operation by calling shp_submit_req(). It sets a target cpu
device information with shp_add_dev_info() for the request.
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
---
drivers/base/cpu.c | 40 ++++++++++++++++++++++++++++------------
1 file changed, 28 insertions(+), 12 deletions(-)
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 05534ad..cd1cbdc 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -41,27 +41,43 @@ static ssize_t __ref store_online(struct device *dev,
const char *buf, size_t count)
{
struct cpu *cpu = container_of(dev, struct cpu, dev);
- ssize_t ret;
+ struct shp_request *shp_req;
+ struct shp_device *shp_dev;
+ enum shp_operation operation;
+ ssize_t ret = count;
- cpu_hotplug_driver_lock();
switch (buf[0]) {
case '0':
- ret = cpu_down(cpu->dev.id);
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
+ operation = SHP_ONLINE_DEL;
break;
case '1':
- ret = cpu_up(cpu->dev.id);
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_ONLINE);
+ operation = SHP_ONLINE_ADD;
break;
default:
- ret = -EINVAL;
+ return -EINVAL;
+ }
+
+ shp_req = shp_alloc_request(operation);
+ if (!shp_req)
+ return -ENOMEM;
+
+ shp_dev = kzalloc(sizeof(*shp_dev), GFP_KERNEL);
+ if (!shp_dev) {
+ kfree(shp_req);
+ return -ENOMEM;
+ }
+
+ shp_dev->device = dev;
+ shp_dev->class = SHP_CLS_CPU;
+ shp_dev->info.cpu.cpu_id = cpu->dev.id;
+ shp_add_dev_info(shp_req, shp_dev);
+
+ if (shp_submit_req(shp_req)) {
+ kfree(shp_dev);
+ kfree(shp_req);
+ return -EINVAL;
}
- cpu_hotplug_driver_unlock();
- if (ret >= 0)
- ret = count;
return ret;
}
static DEVICE_ATTR(online, 0644, show_online, store_online);
next prev parent reply other threads:[~2013-01-11 0:05 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 23:40 [RFC PATCH v2 00/12] System device hot-plug framework Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 01/12] Add sys_hotplug.h for system device hotplug framework Toshi Kani
2013-01-11 21:23 ` Rafael J. Wysocki
2013-01-14 15:33 ` Toshi Kani
2013-01-14 18:48 ` Rafael J. Wysocki
2013-01-14 19:02 ` Toshi Kani
2013-01-30 4:48 ` Greg KH
2013-01-31 1:15 ` Toshi Kani
2013-01-31 5:24 ` Greg KH
2013-01-31 14:42 ` Toshi Kani
2013-01-30 4:53 ` Greg KH
2013-01-31 1:46 ` Toshi Kani
2013-01-30 4:58 ` Greg KH
2013-01-31 2:57 ` Toshi Kani
2013-01-31 20:54 ` Rafael J. Wysocki
2013-02-01 1:32 ` Toshi Kani
2013-02-01 7:30 ` Greg KH
2013-02-01 20:40 ` Toshi Kani
2013-02-01 22:21 ` Rafael J. Wysocki
2013-02-01 23:12 ` Toshi Kani
2013-02-02 15:01 ` Greg KH
2013-02-04 0:28 ` Toshi Kani
2013-02-04 12:46 ` Greg KH
2013-02-04 16:46 ` Toshi Kani
2013-02-04 19:45 ` Rafael J. Wysocki
2013-02-04 20:59 ` Toshi Kani
2013-02-04 23:23 ` Rafael J. Wysocki
2013-02-04 23:33 ` Toshi Kani
2013-02-01 7:23 ` Greg KH
2013-02-01 22:12 ` Rafael J. Wysocki
2013-02-02 14:58 ` Greg KH
2013-02-02 20:15 ` Rafael J. Wysocki
2013-02-02 22:18 ` [PATCH?] Move ACPI device nodes under /sys/firmware/acpi (was: Re: [RFC PATCH v2 01/12] Add sys_hotplug.h for system device hotplug framework) Rafael J. Wysocki
2013-02-04 1:24 ` Greg KH
2013-02-04 12:34 ` Rafael J. Wysocki
2013-02-03 20:44 ` [RFC PATCH v2 01/12] Add sys_hotplug.h for system device hotplug framework Rafael J. Wysocki
2013-02-04 12:48 ` Greg KH
2013-02-04 14:21 ` Rafael J. Wysocki
2013-02-04 14:33 ` Greg KH
2013-02-04 20:07 ` Rafael J. Wysocki
2013-02-04 22:13 ` Toshi Kani
2013-02-04 23:52 ` Rafael J. Wysocki
2013-02-05 0:04 ` Greg KH
2013-02-05 1:02 ` Rafael J. Wysocki
2013-02-05 11:11 ` Rafael J. Wysocki
2013-02-05 18:39 ` Greg KH
2013-02-05 21:13 ` Rafael J. Wysocki
2013-02-05 0:55 ` Toshi Kani
2013-02-04 16:19 ` Toshi Kani
2013-02-04 19:43 ` Rafael J. Wysocki
2013-02-04 1:23 ` Greg KH
2013-02-04 13:41 ` Rafael J. Wysocki
2013-02-04 16:02 ` Toshi Kani
2013-02-04 19:48 ` Rafael J. Wysocki
2013-02-04 19:46 ` Toshi Kani
2013-02-04 20:12 ` Rafael J. Wysocki
2013-02-04 20:34 ` Toshi Kani
2013-02-04 23:19 ` Rafael J. Wysocki
2013-01-10 23:40 ` [RFC PATCH v2 02/12] ACPI: " Toshi Kani
2013-01-11 21:25 ` Rafael J. Wysocki
2013-01-14 15:53 ` Toshi Kani
2013-01-14 18:47 ` Rafael J. Wysocki
2013-01-14 18:42 ` Toshi Kani
2013-01-14 19:07 ` Rafael J. Wysocki
2013-01-14 19:21 ` Toshi Kani
2013-01-30 4:51 ` Greg KH
2013-01-31 1:38 ` Toshi Kani
2013-01-14 19:21 ` Greg KH
2013-01-14 19:29 ` Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 03/12] drivers/base: Add " Toshi Kani
2013-01-30 4:54 ` Greg KH
2013-01-31 1:48 ` Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 04/12] cpu: Add cpu hotplug handlers Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 05/12] mm: Add memory " Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 06/12] ACPI: Add ACPI bus " Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 07/12] ACPI: Add ACPI resource hotplug handler Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 08/12] ACPI: Update processor driver for hotplug framework Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 09/12] ACPI: Update memory " Toshi Kani
2013-01-10 23:40 ` [RFC PATCH v2 10/12] ACPI: Update container " Toshi Kani
2013-01-10 23:40 ` Toshi Kani [this message]
2013-01-10 23:40 ` [RFC PATCH v2 12/12] ACPI: Update sysfs eject " Toshi Kani
2013-01-17 0:50 ` [RFC PATCH v2 00/12] System device hot-plug framework Rafael J. Wysocki
2013-01-17 17:59 ` Toshi Kani
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