linux/drivers/base, branch v2.6.35

Driver-core: Always create class directories for classses that support namespaces.

2010-07-26T15:05:31Z

This fixes the regression in 2.6.35-rcX where bluetooth network devices would fail to be deleted from sysfs, causing their destruction and recreation to fail. In addition this fixes the mac80211_hwsim driver where it would leave around sysfs files when the driver was removed. This problem is discussed at https://bugzilla.kernel.org/show_bug.cgi?id=16257 The reason for the regression is that the network namespace support added to sysfs expects and requires that network devices be put in directories that can contain only network devices. Today get_device_parent almost provides that guarantee for all class devices, except for a specific exception when the parent of a class devices is a class device. It would be nice to simply remove that arguably incorrect special case, but apparently the input devices depend on it being there. So I have only removed it for class devices with network namespace support. Which today are the network devices. It has been suggested that a better fix would be to change the parent device from a class device to a bus device, which in the case of the bluetooth driver would change /sys/class/bluetooth to /sys/bus/bluetoth, I can not see how we would avoid significant userspace breakage if we were to make that change. Adding an extra directory in the path to the device will also be userspace visible but it is much less likely to break things. Everything is still accessible from /sys/class (for example), and it fixes two bugs. Adding an extra directory fixes a 3 year old regression introduced with the new sysfs layout that makes it impossible to rename bnep0 network devices to names that conflict with hci device attributes like hci_revsion. Adding an additional directory removes the new failure modes introduced by the network namespace code. If it weren't for the regession in the renaming of network devices I would figure out how to just make the sysfs code deal with this configuration of devices. In summary this patch fixes regressions by changing: "/sys/class/bluetooth/hci0/bnep0" to "/sys/class/bluetooth/hci0/net/bnep0". Reported-by: Johannes Berg Reported-by: Janusz Krzysztofik Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds

topology: convert cpu notifier to return encapsulate errno value

2010-05-27T16:12:48Z

By the previous modification, the cpu notifier can return encapsulate errno value. This converts the cpu notifiers for topology. Signed-off-by: Akinobu Mita Cc: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: compaction: add /sys trigger for per-node memory compaction

2010-05-25T15:06:59Z

Add a per-node sysfs file called compact. When the file is written to, each zone in that node is compacted. The intention that this would be used by something like a job scheduler in a batch system before a job starts so that the job can allocate the maximum number of hugepages without significant start-up cost. Signed-off-by: Mel Gorman Acked-by: Rik van Riel Reviewed-by: KOSAKI Motohiro Reviewed-by: Christoph Lameter Reviewed-by: Minchan Kim Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

driver-core: fix Typo in drivers/base/core.c for CONFIG_MODULE

2010-05-21T16:37:32Z

In this code section the final S of CONFIG_MODULES was missed making the whole check useless Signed-off-by: Christoph Egger Cc: Mark McLoughlin Signed-off-by: Greg Kroah-Hartman

sysfs: add struct file* to bin_attr callbacks

2010-05-21T16:37:31Z

This allows bin_attr->read,write,mmap callbacks to check file specific data (such as inode owner) as part of any privilege validation. Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman

driver core: Implement ns directory support for device classes.

2010-05-21T16:37:31Z

device_del and device_rename were modified to use sysfs_delete_link and sysfs_rename_link respectively to ensure when these operations happen on devices whose classes are in namespace directories they work properly. Signed-off-by: Eric W. Biederman Signed-off-by: Benjamin Thery Signed-off-by: Greg Kroah-Hartman

kobj: Add basic infrastructure for dealing with namespaces.

2010-05-21T16:37:31Z

Move complete knowledge of namespaces into the kobject layer so we can use that information when reporting kobjects to userspace. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman

Driver core: Protect device shutdown from hot unplug events.

2010-05-21T16:37:30Z

While device_shutdown() walks through devices_kset to shutdown all devices, device unplug events may race to shutdown individual devices. Specifically, sd_shutdown(), on behalf of fc_starget_delete(), has been observed deleting devices during device_shutdown()'s list traversal. So we factor out list_for_each_entry_safe_reverse(...) in favor of while (!list_empty(...)). Signed-off-by: Hugh Daschbach Signed-off-by: Greg Kroah-Hartman

firmware loader: do not allocate firmare id separately

2010-05-21T16:37:30Z

fw_id has the same life time as firmware_priv so it makes sense to move it into firmware_priv structure instead of allocating separately. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

firmware loader: split out builtin firmware handling

2010-05-21T16:37:30Z

Split builtin firmware handling into separate functions to clean up the main body of code. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman