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linux/drivers/s390/char
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Hendrik Brueckner 1d3f9094c6 s390/sclp_vt220: support magic sysrequests 
Implement magic sysrequest handling for the VT220 terminal (also known as
the Integrated ASCII console on the HMC/SE).
To invoke a "magic sysrequest" function, press "Ctrl+o" followed by a
second character that designates the debugging function.

The handling of the sysrq is scheduled away from the SCLP IRQ context;
because large amounts of sysrq output might fill up the console buffers.
The console might deadlock because it cannot empty the buffers while still
in the receiving IRQ context.  This behavior is the same as for the SCLP
console.

Reported-by: Horst Weber <hweber@de.ibm.com>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-08-26 17:20:45 +02:00
..
con3215.c s390/3215: free memory in error path 2015-04-23 16:55:50 +02:00
con3270.c s390/3270: redraw screen on unsolicited device end 2015-08-26 17:19:49 +02:00
ctrlchar.c s390/ctrlchar: improve handling of magic sysrequests 2015-08-26 17:20:44 +02:00
ctrlchar.h s390/ctrlchar: improve handling of magic sysrequests 2015-08-26 17:20:44 +02:00
defkeymap.c
defkeymap.map
diag_ftp.c s390/hmcdrv: fix interrupt registration 2015-08-19 10:40:17 +02:00
diag_ftp.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
fs3270.c s390/3270: fix missing device_destroy() call 2013-11-15 14:08:37 +01:00
hmcdrv_cache.c s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
hmcdrv_cache.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
hmcdrv_dev.c assorted conversions to %p[dD] 2014-11-19 13:01:20 -05:00
hmcdrv_dev.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
hmcdrv_ftp.c s390/hmcdrv: free memory on error path 2015-01-22 12:16:11 +01:00
hmcdrv_ftp.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
hmcdrv_mod.c s390/hmcdrv: remove unnecessary version.h inclusion 2015-01-15 11:11:16 +01:00
Kconfig s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
keyboard.c s390/keyboard: avoid off-by-one when using strnlen_user() 2015-06-15 10:51:12 +02:00
keyboard.h TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
Makefile s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
monreader.c s390: remove unneeded semicolon 2015-08-07 09:57:00 +02:00
monwriter.c s390: char: drop owner assignment from platform_drivers 2014-10-20 16:21:32 +02:00
raw3270.c s390/3270: correct size detection with the read-partition command 2014-07-16 10:48:10 +02:00
raw3270.h s390/con3270: optionally disable auto update 2014-03-26 10:55:33 +01:00
sclp_async.c s390/sclp_async: add Kconfig option to specify the component id 2014-11-28 09:45:11 +01:00
sclp_cmd.c s390/numa: add emulation support 2015-08-04 14:06:53 +02:00
sclp_con.c s390/sclp: add parameter to specify number of buffer pages 2013-06-26 21:10:03 +02:00
sclp_config.c s390/sclp: reword cpu capability change message 2013-08-22 12:20:07 +02:00
sclp_cpi_sys.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_cpi_sys.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_cpi.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_ctl.c s390/sclp: remove duplicated include from sclp_ctl.c 2013-06-26 21:10:24 +02:00
sclp_diag.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
sclp_early.c s390/sclp: fix compile error 2015-07-01 09:34:38 +02:00
sclp_ftp.c s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
sclp_ftp.h s390/hmcdrv: HMC drive CD/DVD access 2014-09-25 10:52:02 +02:00
sclp_ocf.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_quiesce.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_rw.c s390/sclp: reduce dependency on event type masks 2014-09-25 10:52:01 +02:00
sclp_rw.h
sclp_sdias.c s390/sclp: pass timeout as HZ independent value 2015-06-15 10:50:57 +02:00
sclp_sdias.h s390/sclp: Move declarations for sclp_sdias into separate header file 2013-11-15 14:08:39 +01:00
sclp_tty.c s390/sclp: remove unnecessary XTABS flag 2014-08-15 09:01:20 +02:00
sclp_tty.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
sclp_vt220.c s390/sclp_vt220: support magic sysrequests 2015-08-26 17:20:45 +02:00
sclp.c s390/sclp: Change SCLP console default buffer-full behavior 2015-07-22 09:58:05 +02:00
sclp.h s390/sclp: move sclp_facilities into "struct sclp" 2015-05-13 09:58:18 +02:00
tape_34xx.c s390/tape: remove redundant if statement 2015-01-22 12:51:49 +01:00
tape_3590.c treewide: fix typo in printk and Kconfig 2014-11-20 14:56:11 +01:00
tape_3590.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
tape_char.c s390/tape: fix MTIOCGET ioctl to report blocksize 2014-09-25 10:52:03 +02:00
tape_class.c s390/drivers: Cocci spatch "ptr_ret.spatch" 2013-06-26 21:10:22 +02:00
tape_class.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
tape_core.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
tape_proc.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
tape_std.c s390/tape: Add missing destroy_timer_on_stack() 2014-04-01 09:23:37 +02:00
tape_std.h s390/tape: remove even more tape block leftovers 2012-09-26 15:45:20 +02:00
tape.h s390/tape: remove even more tape block leftovers 2012-09-26 15:45:20 +02:00
tty3270.c s390/3270: redraw screen on unsolicited device end 2015-08-26 17:19:49 +02:00
tty3270.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
vmcp.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
vmcp.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
vmlogrdr.c [s390] remove pointless assignment of ->f_op in vmlogrdr ->open() 2014-10-09 02:39:13 -04:00
vmur.c s390/vmur: Link parent CCW device during UR device creation 2014-01-22 14:02:11 +01:00
vmur.h
zcore.c s390/kdump: fix nosmt kernel parameter 2015-06-25 09:39:26 +02:00