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Kay Sievers fbc92a3455 tty: add 'active' sysfs attribute to tty0 and console device 
tty: add 'active' sysfs attribute to tty0 and console device

Userspace can query the actual virtual console, and the configured
console devices behind /dev/tt0 and /dev/console.

The last entry in the list of devices is the active device, analog
to the console= kernel command line option.

The attribute supports poll(), which is raised when the virtual
console is changed or /dev/console is reconfigured.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

index 0000000..b138b66
2010-12-16 16:15:34 -08:00
..
debugfs-ec Documentation: Add new /sys/kernel/debug/ec/* files to ABI 2010-08-03 09:49:07 -04:00
debugfs-pktcdvd doc: use correct debugfs mountpoint 2009-04-13 15:04:33 -07:00
ima_policy ima: rename PATH_CHECK to FILE_CHECK 2010-02-07 03:06:23 -05:00
procfs-diskstats tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
sysfs-ata [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
sysfs-block block: Added in stricter no merge semantics for block I/O 2010-01-29 09:04:08 +01:00
sysfs-block-zram Staging: zram: Document sysfs entries 2010-08-31 15:34:36 -07:00
sysfs-bus-css
sysfs-bus-i2c-devices-hm6352 hmc6352: add driver for the HMC6352 compass 2010-08-09 20:45:10 -07:00
sysfs-bus-pci PCI: export SMBIOS provided firmware instance and label to sysfs 2010-07-30 09:36:01 -07:00
sysfs-bus-pci-devices-cciss cciss: Add usage_count attribute to each logical drive in /sys 2009-10-01 21:15:44 +02:00
sysfs-bus-umc uwb: document UWB and WUSB sysfs files 2008-09-17 16:54:35 +01:00
sysfs-bus-usb USB: deprecate the power/level sysfs attribute 2010-05-20 13:21:37 -07:00
sysfs-bus-usb-devices-usbsevseg USB: Added driver for a Delcom USB 7-segment LED Display 2008-10-17 14:40:51 -07:00
sysfs-c2port Add c2 port support 2008-11-12 17:17:18 -08:00
sysfs-class
sysfs-class-bdi
sysfs-class-lcd video/lcd: document sysfs interface 2009-08-28 15:21:12 -04:00
sysfs-class-led led: document sysfs interface 2009-08-28 15:21:12 -04:00
sysfs-class-mtd Documentation: add MTD sysfs docs 2009-05-29 15:13:04 +01:00
sysfs-class-pktcdvd
sysfs-class-power ds2760_battery: Document ABI change 2010-05-19 12:25:39 +04:00
sysfs-class-regulator regulator: add get_status() 2009-03-31 09:56:20 +01:00
sysfs-class-uwb_rc uwb: add basic radio manager 2008-11-19 14:46:33 +00:00
sysfs-class-uwb_rc-wusbhc USB: wusb: add wusb_phy_rate sysfs file to host controllers 2009-12-11 11:55:16 -08:00
sysfs-dev
sysfs-devices
sysfs-devices-memory Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
sysfs-devices-node mm: compaction: add /sys trigger for per-node memory compaction 2010-05-25 08:06:59 -07:00
sysfs-devices-platform-_UDC_-gadget USB: gadget: storage: optional SCSI WRITE FUA bit 2010-08-10 14:35:42 -07:00
sysfs-devices-power PM / Runtime: Implement autosuspend support 2010-10-17 01:57:48 +02:00
sysfs-devices-system-cpu Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
sysfs-devices-system-ibm-rtl IBM Real-Time "SMI Free" mode driver -v7 2010-10-21 10:10:46 -04:00
sysfs-driver-hid-picolcd HID: split picolcd's operation_mode sysfs attribute 2010-04-27 15:31:26 +02:00
sysfs-driver-hid-prodikeys HID: Prodikeys PC-MIDI HID Driver 2010-05-12 15:18:59 +02:00
sysfs-driver-hid-roccat-kone HID: roccat: remove obsolete kone_abi_version sysfs attribute 2010-06-21 15:20:35 +02:00
sysfs-driver-hid-roccat-pyra HID: roccat: add driver for Roccat Pyra mouse 2010-09-01 12:41:17 +02:00
sysfs-firmware-acpi ACPI: add /sys/firmware/acpi/interrupts/sci_not counter 2009-04-21 00:35:47 -04:00
sysfs-firmware-memmap Bernhard has moved 2009-02-18 15:37:56 -08:00
sysfs-firmware-sfi SFI: add sysfs interface for SFI tables. 2010-05-27 12:46:20 -04:00
sysfs-firmware-sgi_uv
sysfs-fs-ext4 ext4: teach the inode allocator to use a goal inode number 2009-06-13 11:45:35 -04:00
sysfs-gpio gpiolib: allow poll() on value 2009-09-23 07:39:48 -07:00
sysfs-i2c-bmp085 drivers/misc: support for the pressure sensor BMP085 from Bosch Sensortec 2010-08-09 20:45:05 -07:00
sysfs-ibft
sysfs-kernel-mm
sysfs-kernel-mm-hugepages
sysfs-kernel-slab slub: allow stats to be cleared 2009-10-15 21:34:12 +03:00
sysfs-kernel-uids
sysfs-memory-page-offline HWPOISON: Add soft page offline support 2009-12-16 12:20:00 +01:00
sysfs-module add Packet hub driver for Topcliff Platform controller hub 2010-10-22 10:16:42 -07:00
sysfs-ocfs2
sysfs-platform-asus-laptop asus-laptop: set the right paths in the documentation 2010-02-28 19:35:09 +01:00
sysfs-platform-eeepc-laptop eeepc-laptop: set the right paths in the documentation 2010-02-28 19:30:57 +01:00
sysfs-power PM: Add sysfs attr for rechecking dev hash from PM trace 2010-10-17 01:57:50 +02:00
sysfs-pps LinuxPPS: core support 2009-06-18 13:04:04 -07:00
sysfs-profiling profiling: dynamically enable readprofile at runtime 2008-10-16 11:21:31 -07:00
sysfs-tty tty: add 'active' sysfs attribute to tty0 and console device 2010-12-16 16:15:34 -08:00
sysfs-wacom HID: wacom: add ABI doc entry for speed attribute 2010-04-23 02:14:10 +02:00
sysfs-wusb_cbaf uwb: document UWB and WUSB sysfs files 2008-09-17 16:54:35 +01:00