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Peter Oberparleiter 70aa5d3982 s390/sclp: add tracing of SCLP interactions 
Add tracing of interactions between the SCLP base driver, firmware and
other drivers to support problem determination in case of SCLP-related
issues.

For that purpose this patch introduces two new s390dbf debug areas:

  - sclp: An abbreviated log of all common interactions
  - sclp_err: A full log of failed or abnormal interactions

Tracing of full SCCB contents can be enabled for the sclp area by
setting its debug level to maximum (6).

Overview of added trace events:

  * Firmware interaction:
    - SRV1: Service call about to be issued
    - SRV2: Service call was issued
    - INT:  Interrupt received

  * Driver interaction:
    - RQAD: Request was added
    - RQOK: Request success
    - RQAB: Request aborted
    - RQTM: Request timed out
    - REG:  Event listener registered
    - UREG: Event listener unregistered
    - EVNT: Event callback
    - STCG: State-change callback

  * Abnormal events:
    - TMO:  A timeout occurred
    - UNEX: Unexpected SCCB completion

  * Other (not traced at default level):
    - SYN1: Synchronous wait start
    - SYN2: Synchronous wait end

Since the SCLP interface is used by console drivers this patch also
moves s390dbf printks outside the critical section protected by debug
area locks to prevent a potential deadlock that would otherwise be
introduced between console_owner --> sclp_lock --> sclp_debug.lock.

Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 		2021-08-25 11:03:35 +02:00
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accessibility TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
acpi Merge branch 'acpi-utils' 2021-07-23 17:06:15 +02:00
amba
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android
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ata ARM: SoC changes for 5.14 2021-07-10 09:22:44 -07:00
atm Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
auxdisplay
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base driver core: Prevent warning when removing a device link from unregistered consumer 2021-07-21 17:28:42 +02:00
bcma
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block rbd: resurrect setting of disk->private_data in rbd_init_disk() 2021-07-21 17:20:43 +02:00
bluetooth TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
bus bus: mhi: pci_generic: Fix inbound IPCR channel 2021-07-21 13:16:18 +02:00
cdrom block: remove REQ_OP_SCSI_{IN,OUT} 2021-06-30 15:34:19 -06:00
char powerpc/powernv: Fix fall-through warning for Clang 2021-07-13 19:21:41 -05:00
clk dt-bindings: clock: r9a07g044-cpg: Update clock/reset definitions 2021-07-12 10:52:03 +02:00
clocksource This round has a diffstat dominated by Qualcomm clk drivers. Honestly though 2021-07-01 13:26:16 -07:00
comedi Staging / IIO driver patches for 5.14-rc1 2021-07-05 14:01:53 -07:00
connector
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counter
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cpufreq cpufreq: Fix fall-through warning for Clang 2021-07-13 11:53:07 -05:00
cpuidle - Add support for the Qcom MSM8226 (Bartosz Dudziak) 2021-06-30 14:56:51 +02:00
crypto ARM: SoC changes for 5.14 2021-07-10 09:22:44 -07:00
cxl
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dax fs: remove noop_set_page_dirty() 2021-06-29 10:53:48 -07:00
dca
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devfreq PM / devfreq: passive: Fix get_target_freq when not using required-opp 2021-06-24 10:37:35 +09:00
dio
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dma dmaengine: mpc512x: Fix fall-through warning for Clang 2021-07-14 11:05:55 -05:00
dma-buf Short summary of fixes pull: 2021-07-13 15:15:17 +02:00
edac EDAC/igen6: fix core dependency AGAIN 2021-07-15 11:59:59 -07:00
eisa
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extcon Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
firewire Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
firmware A set of EFI fixes: 2021-07-25 10:04:27 -07:00
fpga fpga: machxo2-spi: Address warning about unused variable 2021-06-24 15:45:11 +02:00
fsi
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gnss
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gpio - Core Frameworks 2021-07-05 12:10:34 -07:00
gpu Short summary of fixes pull: 2021-07-23 11:17:03 +10:00
greybus
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hid Merge branch 'for-5.14/multitouch' into for-linus 2021-06-30 09:15:15 +02:00
hsi
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hv Drivers: hv: vmbus: Fix duplicate CPU assignments within a device 2021-07-19 09:26:31 +00:00
hwmon Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
hwspinlock
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hwtracing Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
i2c i2c: mpc: Poll for MCF 2021-07-20 22:32:01 +02:00
i3c I3C for 5.14 2021-07-10 11:53:06 -07:00
idle
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iio Staging / IIO driver patches for 5.14-rc1 2021-07-05 14:01:53 -07:00
infiniband Tracing updates for 5.14: 2021-07-03 11:13:22 -07:00
input This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
interconnect interconnect changes for 5.14 2021-06-22 22:03:25 +02:00
iommu s390/pci: improve DMA translation init and exit 2021-08-25 11:03:34 +02:00
ipack TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
irqchip irqchip fixes for 5.14, take #1 2021-07-09 15:35:13 +02:00
isdn TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
leds This contains quite a lot of fixes, with more fixes in my inbox that 2021-07-03 11:57:42 -07:00
lightnvm
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macintosh
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mailbox mbox: add polarfire soc system controller mailbox 2021-06-26 12:06:48 -05:00
mcb mcb: Use DEFINE_RES_MEM() helper macro and fix the end address 2021-06-24 15:56:25 +02:00
md - Various DM persistent-data library improvements and fixes that 2021-06-30 18:19:39 -07:00
media ACPI fixes for 5.14-rc3 2021-07-23 11:08:06 -07:00
memory
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memstick for-5.14/block-2021-06-29 2021-06-30 12:12:56 -07:00
message scsi: message: mptfc: Switch from pci_ to dma_ API 2021-06-22 23:00:01 -04:00
mfd Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
misc Merge tag 'at24-fixes-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current 2021-07-20 22:28:56 +02:00
mmc MMC core: 2021-07-22 09:51:38 -07:00
most
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mtd mtd: cfi_util: Fix unreachable code issue 2021-07-12 11:15:28 -05:00
mux
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net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-07-22 10:11:27 -07:00
nfc
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ntb
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nubus
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nvdimm cxl for 5.14 2021-07-04 11:55:13 -07:00
nvme block-5.14-2021-07-24 2021-07-24 12:57:06 -07:00
nvmem Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
of Devicetree updates for v5.14: 2021-07-03 10:54:08 -07:00
opp
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parisc kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
parport
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pci PCI: Fix fall-through warning for Clang 2021-07-13 13:59:12 -05:00
pcmcia
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perf
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phy USB / Thunderbolt patches for 5.14-rc1 2021-07-05 14:16:22 -07:00
pinctrl This is the bulk of pin control changes for the v5.14 kernel: 2021-07-01 16:57:14 -07:00
platform Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
pnp Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
power power: supply: Fix fall-through warnings for Clang 2021-07-13 14:50:47 -05:00
powercap
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pps
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ps3
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ptp ptp: Relocate lookup cookie to correct block. 2021-07-08 12:33:10 -07:00
pwm pwm: ep93xx: Ensure configuring period and duty_cycle isn't wrongly skipped 2021-07-08 16:09:30 +02:00
rapidio
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ras
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regulator regulator: Fixes for v5.14 2021-07-21 12:37:49 -07:00
remoteproc remoteproc updates for v5.14 2021-07-07 10:50:03 -07:00
reset ARM: Drivers for 5.14 2021-07-10 09:46:20 -07:00
rpmsg
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rtc RTC for 5.14 2021-07-10 16:19:10 -07:00
s390 s390/sclp: add tracing of SCLP interactions 2021-08-25 11:03:35 +02:00
sbus
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scsi SCSI fixes on 20210724 2021-07-24 13:08:31 -07:00
sh
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siox siox: Simplify error handling via dev_err_probe() 2021-06-24 15:46:34 +02:00
slimbus
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soc ARM: Drivers for 5.14 2021-07-10 09:46:20 -07:00
soundwire Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
spi spi: Fixes for v5.14 2021-07-21 12:41:41 -07:00
spmi spmi: hisi-spmi-controller: move driver from staging 2021-06-25 10:02:05 +02:00
ssb
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staging TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
target scsi: target: Fix NULL dereference on XCOPY completion 2021-07-20 23:18:22 -04:00
tc
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tee fallthrough fixes for Clang for 5.14-rc1 2021-06-28 20:03:38 -07:00
thermal - Add rk3568 sensor support (Finley Xiao) 2021-07-10 11:43:25 -07:00
thunderbolt USB / Thunderbolt patches for 5.14-rc1 2021-07-05 14:16:22 -07:00
tty This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
uio
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usb USB fixes for 5.14-rc3 2021-07-23 10:09:27 -07:00
vdpa vp_vdpa: allow set vq state to initial state after reset 2021-07-08 07:49:02 -04:00
vfio VFIO update for v5.14-rc1 2021-07-03 11:49:33 -07:00
vhost vdpa: support packed virtqueue for set/get_vq_state() 2021-07-08 07:49:01 -04:00
video drm fixes for 5.14-rc2 2021-07-16 11:14:54 -07:00
virt nitro_enclaves: Set Bus Master for the NE PCI device 2021-06-24 15:48:27 +02:00
virtio virtio,vhost,vdpa: features, fixes 2021-07-09 11:06:29 -07:00
visorbus
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vlynq
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vme
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w1
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watchdog linux-watchdog 5.14-rc1 tag 2021-07-07 12:57:46 -07:00
xen xen: branch for v5.14-rc1 2021-07-07 11:07:13 -07:00
zorro
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Kconfig
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Makefile hyperv-next for 5.14 2021-06-29 11:21:35 -07:00