Sebastian Ott 0dcd91a9e6 s390/debug: only write data once ...

debug_event_common memsets the active debug entry with zeros to
prevent stale data leakage. This is overwritten with the actual
debug data in the next step. Only write zeros to that part of the
debug entry that's not used by new debug data.

Micro benchmarks show a 2-10% reduction of cpu cycles with this
approach.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2017-10-18 14:11:23 +02:00

..

vdso32

s390/mm: use new mm defines instead of magic values

2017-07-26 08:25:09 +02:00

vdso64

s390/mm: use new mm defines instead of magic values

2017-07-26 08:25:09 +02:00

.gitignore

…

als.c

s390/sclp: don't add new lines to each printed string

2017-02-08 14:13:20 +01:00

asm-offsets.c

s390/time: add support for the TOD clock epoch extension

2017-07-26 08:25:14 +02:00

audit.c

…

audit.h

…

base.S

s390/kdump: fix nosmt kernel parameter

2015-06-25 09:39:26 +02:00

cache.c

s390/cpuinfo: show dynamic and static cpu mhz

2016-06-13 15:58:17 +02:00

compat_audit.c

…

compat_linux.c

s390: kernel: Audit and remove any unnecessary uses of module.h

2017-02-17 07:40:31 +01:00

compat_linux.h

s390: add support for vector extension

2014-10-09 09:14:13 +02:00

compat_ptrace.h

…

compat_signal.c

signal: Remove kernel interal si_code magic

2017-07-24 14:30:28 -05:00

compat_wrapper.c

s390/sthyi: add s390_sthyi system call

2017-10-09 11:15:36 +02:00

cpcmd.c

s390/cpcmd,vmcp: avoid GFP_DMA allocations

2017-08-09 09:09:35 -04:00

crash_dump.c

s390/kdump: Add final note

2017-03-28 16:54:31 +02:00

debug.c

s390/debug: only write data once

2017-10-18 14:11:23 +02:00

diag.c

s390/diag: add diag26c support

2017-06-20 15:44:15 -04:00

dis.c

s390/disassembler: add new z14 instructions

2017-09-29 15:52:24 +02:00

dumpstack.c

s390/mm: use new mm defines instead of magic values

2017-07-26 08:25:09 +02:00

early_printk.c

s390/sclp: make early sclp code readable

2017-02-08 14:13:19 +01:00

early.c

s390/topology: alternative topology for topology-less machines

2017-09-20 13:47:54 +02:00

ebcdic.c

s390: kernel: Audit and remove any unnecessary uses of module.h

2017-02-17 07:40:31 +01:00

entry.h

s390/sthyi: add s390_sthyi system call

2017-10-09 11:15:36 +02:00

entry.S

s390,kvm: provide plumbing for machines checks when running guests

2017-06-28 12:57:47 +02:00

fpu.c

s390/fpu: improve kernel_fpu_[begin|end]

2016-08-29 11:05:01 +02:00

ftrace.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2017-05-16 09:24:44 -07:00

guarded_storage.c

s390/guarded storage: simplify task exit handling

2017-09-28 07:29:40 +02:00

head64.S

s390/time: add support for the TOD clock epoch extension

2017-07-26 08:25:14 +02:00

head_kdump.S

s390: remove 31 bit support

2015-03-25 11:49:33 +01:00

head.S

s390/time: add support for the TOD clock epoch extension

2017-07-26 08:25:14 +02:00

idle.c

sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>

2017-03-02 08:42:39 +01:00

ipl.c

s390/ipl: revert Load Normal semantics for LPAR CCW-type re-IPL

2017-06-14 15:35:31 +02:00

irq.c

s390/time: add support for the TOD clock epoch extension

2017-07-26 08:25:14 +02:00

jump_label.c

s390: Prevent hotplug rwsem recursion

2017-05-26 10:10:46 +02:00

kdebugfs.c

s390/debugfs: introduce top-level 's390' directory

2017-03-22 08:29:15 +01:00

kprobes.c

s390/kprobes: remove KPROBE_SWAP_INST state

2017-10-12 07:16:50 +02:00

lgr.c

s390: kernel: make lgr explicitly non-modular

2016-10-31 17:55:42 +01:00

machine_kexec.c

s390/kexec: Fix checksum validation return code for kdump

2017-10-18 14:11:16 +02:00

Makefile

Merge branch 'sthyi' into features

2017-10-09 11:16:49 +02:00

mcount.S

s390: move exports to definitions

2016-08-07 23:47:20 -04:00

module.c

s390: add no-execute support

2017-02-08 14:13:25 +01:00

nmi.c

KVM: s390: Backup the guest's machine check info

2017-06-27 16:05:38 +02:00

os_info.c

s390: proper type casts for csum_partial invocations

2017-01-16 07:27:53 +01:00

perf_cpum_cf_events.c

s390/cpum_cf: correct variable naming (cleanup)

2017-03-31 07:53:33 +02:00

perf_cpum_cf.c

s390/cpum_cf: make hw_perf_event_update() a void function

2017-03-31 07:53:35 +02:00

perf_cpum_sf.c

s390/cpumf: remove superfluous nr_cpumask_bits check

2017-09-28 07:29:43 +02:00

perf_event.c

s390/perf: fix null string in perf list pmu command

2017-06-12 16:26:00 +02:00

pgm_check.S

s390: remove 31 bit support

2015-03-25 11:49:33 +01:00

process.c

s390: get rid of exit_thread()

2017-09-28 07:29:40 +02:00

processor.c

s390/cpuinfo: show facilities as reported by stfle

2017-03-22 08:29:02 +01:00

ptrace.c

s390/ptrace: add runtime instrumention register get/set

2017-09-28 07:29:41 +02:00

reipl.S

s390/dump: rework CPU register dump code

2015-11-27 09:24:14 +01:00

relocate_kernel.S

s390/mm: use new mm defines instead of magic values

2017-07-26 08:25:09 +02:00

runtime_instr.c

s390/runtime_instrumentation: clean up struct runtime_instr_cb

2017-09-28 07:29:40 +02:00

setup.c

s390/spinlock: introduce spinlock wait queueing

2017-09-28 07:29:44 +02:00

signal.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

smp.c

s390/spinlock: introduce spinlock wait queueing

2017-09-28 07:29:44 +02:00

stacktrace.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>

2017-03-02 08:42:34 +01:00

sthyi.c

s390/sthyi: add s390_sthyi system call

2017-10-09 11:15:36 +02:00

suspend.c

s390/mm: tag normal pages vs pages used in page tables

2017-07-25 06:55:28 +02:00

swsusp.S

s390/sclp: don't add new lines to each printed string

2017-02-08 14:13:20 +01:00

sys_s390.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

syscalls.S

s390/sthyi: add s390_sthyi system call

2017-10-09 11:15:36 +02:00

sysinfo.c

S390/sysinfo: use uuid_is_null instead of opencoding it

2017-06-05 16:59:06 +02:00

time.c

s390/dasd: Change unsigned long long to unsigned long

2017-08-23 13:31:51 +02:00

topology.c

s390/topology: add detection of dedicated vs shared CPUs

2017-09-28 07:29:43 +02:00

trace.c

s390/diag: avoid lockdep recursion

2016-02-11 13:05:56 +01:00

traps.c

s390: add missing header includes for type checking

2017-06-12 16:25:55 +02:00

uprobes.c

s390: rename struct psw_bits members

2017-06-12 16:26:02 +02:00

vdso.c

s390/mm: use memset64 instead of clear_table

2017-10-09 11:18:06 +02:00

vmlinux.lds.S

s390: move _text symbol to address higher than zero

2017-05-09 10:44:38 +02:00

vtime.c

s390/cputime: simplify account_system_index_scaled

2017-06-12 16:25:57 +02:00