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2009d0059c
linux_dsm_epyc7002/drivers/s390/char
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Martin Schwidefsky 8c071b0f19 s390/time: correct use of store clock fast 
The result of the store-clock-fast (STCKF) instruction is a bit fuzzy.
It can happen that the value stored on one CPU is smaller than the value
stored on another CPU, although the order of the stores is the other
way around. This can cause deltas of get_tod_clock() values to become
negative when they should not be.

We need to be more careful with store-clock-fast, this patch partially
reverts git commit e4b7b4238e666682555461fa52eecd74652f36bb "time:
always use stckf instead of stck if available". The get_tod_clock()
function now uses the store-clock-extended (STCKE) instruction.
get_tod_clock_fast() can be used if the fuzziness of store-clock-fast
is acceptable e.g. for wait loops local to a CPU.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-10-22 09:16:40 +02:00
..
con3215.c s390/cio: ccw_device_force_console don't use static variable 2013-04-17 14:07:31 +02:00
con3270.c s390/3270: drop unused spinlock from struct con3270 2012-09-26 15:45:11 +02:00
ctrlchar.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
ctrlchar.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
defkeymap.c
defkeymap.map
fs3270.c s390: make various functions static, add declarations to header files 2013-09-07 11:58:03 +02:00
Kconfig tty: Added a CONFIG_TTY option to allow removal of TTY 2013-01-18 16:15:27 -08:00
keyboard.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
keyboard.h TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
Makefile s390/sclp: Add SCLP character device driver 2013-06-26 21:10:13 +02:00
monreader.c s390/monreader: Remove redundant NULL check before kfree 2013-04-17 14:07:25 +02:00
monwriter.c
raw3270.c s390/cio: ccw_device_force_console don't use static variable 2013-04-17 14:07:31 +02:00
raw3270.h s390/3270: asynchronous size sensing 2013-02-14 15:55:03 +01:00
sclp_async.c
sclp_cmd.c s390/sclp: properly detect line mode console 2013-09-30 13:04:39 +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_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: use -EOPNOTSUPP instead of -ENOSYS 2012-09-26 15:45:13 +02:00
sclp_rw.h
sclp_sdias.c s390/sclp_sdias: Add missing break and "fall through" 2012-08-08 07:32:55 -07:00
sclp_tty.c TTY: add tty_port_tty_wakeup helper 2013-03-18 16:19:45 -07:00
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: add parameter to specify number of buffer pages 2013-06-26 21:10:03 +02:00
sclp.c s390/time: correct use of store clock fast 2013-10-22 09:16:40 +02:00
sclp.h s390/sclp: Add SCLP character device driver 2013-06-26 21:10:13 +02:00
tape_34xx.c s390/irq: remove split irq fields from /proc/stat 2013-01-08 10:57:07 +01:00
tape_3590.c s390/irq: remove split irq fields from /proc/stat 2013-01-08 10:57:07 +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 new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
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/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +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: fix return value check in tty3270_resize_work() 2013-09-30 13:04:38 +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/vmlogrdr: fix array access in vmlogrdr_open() 2013-10-15 13:47:59 +02:00
vmur.c treewide: relase -> release 2013-06-28 14:34:33 +02:00
vmur.h
vmwatchdog.c s390/vmwatchdog: do not use static data 2013-06-26 21:10:29 +02:00
zcore.c s390/vmcore: use vmcore for zfcpdump 2013-09-11 15:59:15 -07:00