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linux/arch/s390/kernel
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Dmitry Safonov 8539c1288d s390: add show_stack_loglvl() 
Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#u

Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-29-dima@arista.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09 09:39:11 -07:00
..
syscalls vfs: add faccessat2 syscall 2020-05-14 16:44:25 +02:00
vdso64 .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
alternative.c
asm-offsets.c s390: prevent leaking kernel address in BEAR 2020-03-10 15:16:25 +01:00
audit.c
audit.h
base.S s390/base: remove unused s390_base_mcck_handler 2019-09-03 13:53:56 +02:00
cache.c
compat_audit.c
compat_linux.c s390: use generic UID16 implementation 2019-01-18 09:33:18 +01:00
compat_linux.h
compat_ptrace.h
compat_signal.c signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
cpcmd.c
crash_dump.c memblock: memblock_phys_alloc(): don't panic 2019-03-12 10:04:01 -07:00
debug.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
diag.c s390/ftrace: fix potential crashes when switching tracers 2020-04-22 16:20:55 +02:00
dis.c s390/disassembler: don't hide instruction addresses 2019-11-12 11:24:10 +01:00
dumpstack.c s390: add show_stack_loglvl() 2020-06-09 09:39:11 -07:00
early_printk.c s390/sclp: avoid using strncmp with hardcoded length 2019-08-29 15:34:58 +02:00
early.c s390: remove last diag 0x44 caller 2019-12-11 19:53:24 +01:00
ebcdic.c
entry.h s390/mm: add (non)secure page access exceptions handlers 2020-02-27 19:44:40 +01:00
entry.S s390: remove critical section cleanup from entry.S 2020-05-28 12:21:54 +02:00
fpu.c s390: correct some inline assembly constraints 2019-04-17 10:40:57 +02:00
ftrace.c s390: Remove two unused inline functions 2020-05-20 10:22:49 +02:00
guarded_storage.c
head64.S s390/head64: correct init_task stack setup 2019-11-30 10:52:45 +01:00
idle.c s390: remove critical section cleanup from entry.S 2020-05-28 12:21:54 +02:00
ima_arch.c s390/kexec_file: Disable kexec_load when IPLed secure 2019-04-29 10:44:03 +02:00
ipl_vmparm.c s390/ipl: provide uapi header for list directed IPL 2019-04-26 12:34:05 +02:00
ipl.c s390: nvme reipl 2020-05-06 15:19:35 +02:00
irq.c s390/irq: make init_ext_interrupts static 2020-03-11 14:18:44 +01:00
jump_label.c s390/jump_label: remove unused structure definition 2019-06-07 10:10:10 +02:00
kdebugfs.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
kexec_elf.c kexec: Fix file verification on S390 2019-09-10 13:27:51 +01:00
kexec_image.c kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE 2019-08-19 21:54:15 -07:00
kprobes.c s390: support KPROBES_ON_FTRACE 2020-01-30 13:07:55 +01:00
lgr.c
machine_kexec_file.c s390/kexec_file: fix initrd location for kdump kernel 2020-05-14 23:21:37 +02:00
machine_kexec_reloc.c s390/kaslr: add support for R_390_JMP_SLOT relocation type 2020-05-20 10:13:27 +02:00
machine_kexec.c s390: remove broken hibernate / power management support 2020-03-23 13:41:55 +01:00
Makefile s390: ptrace: hard-code "s390x" instead of UTS_MACHINE 2020-05-06 14:59:20 +02:00
mcount.S s390: support KPROBES_ON_FTRACE 2020-01-30 13:07:55 +01:00
module.c s390/module: Use s390_kernel_write() for late relocations 2020-05-08 00:12:43 +02:00
nmi.c s390: remove critical section cleanup from entry.S 2020-05-28 12:21:54 +02:00
nospec-branch.c s390 updates for the 5.2 merge window 2019-05-06 16:42:54 -07:00
nospec-sysfs.c s390: Convert IS_ENABLED uses to __is_defined 2019-04-11 13:36:53 +02:00
os_info.c
perf_cpum_cf_common.c s390/cpum_cf: move common functions into a separate file 2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c s390/cpumf: Adjust registration of s390 PMU device drivers 2019-11-20 17:16:01 +01:00
perf_cpum_cf_events.c s390/cpum_cf: Add new extended counters for IBM z15 2020-03-10 15:16:25 +01:00
perf_cpum_cf.c s390/cpumf: Adjust registration of s390 PMU device drivers 2019-11-20 17:16:01 +01:00
perf_cpum_sf.c s390/cpum_sf: Fix wrong page count in error message 2020-03-25 12:39:37 +01:00
perf_event.c s390: add error handling to perf_callchain_kernel 2019-10-31 17:20:54 +01:00
perf_regs.c
pgm_check.S s390/mm: add (non)secure page access exceptions handlers 2020-02-27 19:44:40 +01:00
process.c s390: prevent leaking kernel address in BEAR 2020-03-10 15:16:25 +01:00
processor.c s390/cpuinfo: do not skip info for CPUs without MHz feature 2020-03-23 13:41:55 +01:00
ptrace.c s390: ptrace: hard-code "s390x" instead of UTS_MACHINE 2020-05-06 14:59:20 +02:00
reipl.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
relocate_kernel.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
runtime_instr.c
setup.c s390 updates for the 5.8 merge window 2020-06-08 12:05:31 -07:00
signal.c s390: use fallthrough; 2020-03-25 12:39:37 +01:00
smp.c s390 updates for the 5.8 merge window 2020-06-08 12:05:31 -07:00
stacktrace.c s390/livepatch: Implement reliable stack tracing for the consistency model 2019-11-30 10:52:48 +01:00
sthyi.c
sys_s390.c s390: autogenerate compat syscall wrappers 2019-01-18 09:33:19 +01:00
sysinfo.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
time.c s390/time: remove monotonic_clock() 2019-10-31 17:20:52 +01:00
topology.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
trace.c s390/ftrace: fix potential crashes when switching tracers 2020-04-22 16:20:55 +02:00
traps.c s390/traps: mark test_monitor_call __init 2020-03-11 14:18:44 +01:00
unwind_bc.c s390/unwind: stop gracefully at user mode pt_regs in irq stack 2019-12-18 23:29:26 +01:00
uprobes.c
uv.c s390/protvirt: fix compilation issue 2020-04-25 10:17:24 +02:00
vdso.c s390: remove compat vdso code 2019-12-01 12:48:49 +01:00
vmlinux.lds.S vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA 2019-11-04 15:57:41 +01:00
vtime.c sched/cputime: Rename vtime_account_system() to vtime_account_kernel() 2019-10-09 12:39:25 +02:00