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linux-stable/drivers/s390/char
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Sumanth Korikkar b971cbd03e s390/sclp: provide extended sccb support 
As the number of cpus increases, the sccb response can exceed 4k for
read cpu and read scp info sclp commands. Hence, all cpu info entries
cant be embedded within a sccb response

Solution:
To overcome this limitation, extended sccb facility is provided by sclp.

1. Check if the extended sccb facility is installed.
2. If extended sccb is installed, perform the read scp and read cpu
   command considering a max sccb length of three page size. This max
   length is based on factors like max cpus, sccb header.
3. If extended sccb is not installed, perform the read scp and read cpu
   sclp command considering a max sccb length of one page size.

Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2020-11-18 12:16:02 +01:00
..
con3215.c s390/3215: simplify the return expression of tty3215_open() 2020-09-29 15:00:58 +02:00
con3270.c s390/3270: fix lockdep false positive on view->lock 2019-04-10 17:46:22 +02:00
ctrlchar.c
ctrlchar.h
defkeymap.c s390/defkeymap: fix global init to zero 2018-03-18 23:02:02 -07:00
defkeymap.map
diag_ftp.c
diag_ftp.h
fs3270.c *: convert stream-like files from nonseekable_open -> stream_open 2019-05-06 17:46:41 +03:00
hmcdrv_cache.c
hmcdrv_cache.h
hmcdrv_dev.c
hmcdrv_dev.h
hmcdrv_ftp.c s390: use fallthrough; 2020-03-25 12:39:37 +01:00
hmcdrv_ftp.h
hmcdrv_mod.c
Kconfig s390/sclp: remove call home support 2019-06-19 17:54:27 +02:00
keyboard.c TTY/Serial driver patches for 4.19-rc1 2018-08-18 10:50:41 -07:00
keyboard.h s390/char : Rename EBCDIC keymap variables 2018-03-18 23:01:56 -07:00
Makefile s390/sclp: Add support for SCLP AP adapter config/deconfig 2020-10-07 21:50:00 +02:00
monreader.c
monwriter.c s390/monwriter: do not use stack buffers for hardware data 2018-10-09 11:20:53 +02:00
raw3270.c s390/3270: fix lockdep false positive on view->lock 2019-04-10 17:46:22 +02:00
raw3270.h s390: remove orphaned function declarations 2020-09-30 12:09:54 +02:00
sclp.c s390/sclp: do not use static sccbs 2019-04-29 10:47:10 +02:00
sclp.h s390/sclp: provide extended sccb support 2020-11-18 12:16:02 +01:00
sclp_ap.c s390/sclp: Add support for SCLP AP adapter config/deconfig 2020-10-07 21:50:00 +02:00
sclp_cmd.c s390/sclp: provide extended sccb support 2020-11-18 12:16:02 +01:00
sclp_con.c
sclp_config.c s390/smp: fix CPU hotplug deadlock with CPU rescan 2019-01-11 17:12:02 +01:00
sclp_cpi_sys.c
sclp_cpi_sys.h
sclp_ctl.c compat: Move compat_timespec/ timeval to compat_time.h 2018-04-19 13:29:54 +02:00
sclp_diag.h
sclp_early.c s390/sclp: provide extended sccb support 2020-11-18 12:16:02 +01:00
sclp_early_core.c s390/sclp: provide extended sccb support 2020-11-18 12:16:02 +01:00
sclp_ftp.c
sclp_ftp.h
sclp_ocf.c
sclp_pci.c s390: Replace zero-length array with flexible-array member 2020-02-27 16:02:21 +01:00
sclp_quiesce.c
sclp_rw.c s390/sclp: remove orphaned sclp_set_columns and sclp_set_htab 2020-09-30 12:09:54 +02:00
sclp_rw.h s390/sclp: remove orphaned sclp_set_columns and sclp_set_htab 2020-09-30 12:09:54 +02:00
sclp_sd.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
sclp_sdias.c s390/nvme: support firmware-assisted dump to NVMe disks 2020-10-02 14:40:48 +02:00
sclp_sdias.h
sclp_tty.c s390/sclp_tty: enable line mode tty even if there is an ascii console 2018-03-18 23:02:00 -07:00
sclp_tty.h
sclp_vt220.c
tape.h s390: remove orphaned function declarations 2020-09-30 12:09:54 +02:00
tape_34xx.c
tape_3590.c s390/tape: fix spelling mistake "partion" -> "partition" 2018-09-20 13:20:28 +02:00
tape_3590.h
tape_char.c compat_ioctl: move tape handling into drivers 2019-10-23 17:23:44 +02:00
tape_class.c s390/tape: replace PTR_RET with PTR_ERR_OR_ZERO 2018-07-19 16:37:37 +02:00
tape_class.h
tape_core.c s390: use fallthrough; 2020-03-25 12:39:37 +01:00
tape_proc.c s390/drivers: fix proc/debugfs file permissions 2018-12-13 10:42:24 +01:00
tape_std.c
tape_std.h s390: remove orphaned function declarations 2020-09-30 12:09:54 +02:00
tty3270.c s390/tty3270: remove function callback casts 2020-07-01 20:00:55 +02:00
tty3270.h
vmcp.c s390/vmcp: correct early_param handling 2019-08-26 12:51:17 +02:00
vmlogrdr.c s390: vmlogrdr: Use ARRAY_SIZE instead of reimplementing its function 2018-09-20 13:20:28 +02:00
vmur.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
vmur.h
zcore.c s390/nvme: support firmware-assisted dump to NVMe disks 2020-10-02 14:40:48 +02:00