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3d1e220d08
linux_dsm_epyc7002/arch/s390/include/asm
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Heiko Carstens 3d1e220d08 s390/ftrace: optimize mcount code 
Reduce the number of executed instructions within the mcount block if
function tracing is enabled. We achieve that by using a non-standard
C function call ABI. Since the called function is also written in
assembler this is not a problem.
This also allows to replace the unconditional store at the beginning
of the mcount block with a larl instruction, which doesn't touch
memory.

In theory we could also patch the first instruction of the mcount block
to enable and disable function tracing. However this would break kprobes.
This could be fixed with implementing the "kprobes_on_ftrace" feature;
however keeping the odd jprobes working seems not to be possible without
a lot of code churn. Therefore keep the code easy and simply accept one
wasted 1-cycle "larl" instruction per function prologue.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-09-09 08:53:30 +02:00
..
airq.h s390/airq: add support for irq ranges 2014-03-04 10:41:04 +01:00
appldata.h s390/appldata: change return value of appldata_asm 2012-09-26 15:45:15 +02:00
asm-offsets.h
atomic.h arch,s390: Convert smp_mb__*() 2014-04-18 14:20:42 +02:00
barrier.h arch,s390: Convert smp_mb__*() 2014-04-18 14:20:42 +02:00
bitops.h s390/bitops,atomic: add missing memory barriers 2014-04-01 09:23:35 +02:00
bug.h
bugs.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
cache.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
cacheflush.h
ccwdev.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
ccwgroup.h s390: fix new ccwgroup.h kernel-doc warning 2014-05-20 08:58:45 +02:00
checksum.h s390/checksum: remove memset() within csum_partial_copy_from_user() 2014-02-24 17:14:08 +01:00
chpid.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
cio.h treewide: Fix typo in Documentation/DocBook 2014-02-19 14:58:17 +01:00
clp.h s390/pci: cleanup clp page allocation 2013-02-14 15:55:16 +01:00
cmb.h UAPI: (Scripted) Disintegrate arch/s390/include/asm 2012-10-09 09:47:31 +01:00
cmpxchg.h s390/32bit: fix cmpxchg64 2014-01-22 14:02:15 +01:00
compat.h s390/compat: build error for large compat syscall args 2014-03-06 16:30:47 +01:00
cpcmd.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
cpu_mf.h s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function 2013-12-16 14:38:00 +01:00
cpu.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
cputime.h vtime: Describe overriden functions in dedicated arch headers 2013-08-14 17:14:53 +02:00
crw.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
css_chars.h s390/qdio: bridgeport support - CHSC part 2014-01-15 14:48:01 -08:00
ctl_reg.h s390/ctl_reg: add union type for control register 0 2014-04-22 13:24:36 +02:00
current.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
debug.h s390/s390dbf: add debug_level_enabled() function 2013-10-24 17:16:53 +02:00
delay.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
device.h
diag.h
dis.h s390/kprobes: allow kprobes only on known instructions 2013-10-24 17:16:50 +02:00
div64.h
dma-mapping.h s390/dma: remove gratuitous brackets 2013-06-26 21:10:26 +02:00
dma.h s390/pci: define isa_dma_bridge_buggy 2013-01-08 10:57:09 +01:00
eadm.h s390/scm_block: do not hide eadm subchannel dependency 2013-11-15 14:08:42 +01:00
ebcdic.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
elf.h s390: system call path micro optimization 2013-04-26 09:07:05 +02:00
emergency-restart.h
etr.h s390/etr,stp: use -EOPNOTSUPP instead of -ENOSYS 2012-09-26 15:45:14 +02:00
exec.h
extmem.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
facility.h s390/facility: decompose test_facility() 2013-06-26 21:10:25 +02:00
fb.h
fcx.h s390/cio: fix error-prone defines 2013-10-24 17:17:04 +02:00
ftrace.h s390/ftrace: optimize mcount code 2014-09-09 08:53:30 +02:00
futex.h s390/uaccess: simplify control register updates 2014-05-20 08:58:46 +02:00
hardirq.h hardirq: Make hardirq bits generic 2013-11-13 20:21:46 +01:00
hugetlb.h s390/mm: cleanup page table definitions 2013-08-22 12:20:06 +02:00
hw_irq.h s390: convert interrupt handling to use generic hardirq 2013-08-22 12:20:04 +02:00
idals.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
io.h s390: remove virt_to_phys implementation 2013-06-26 21:10:02 +02:00
ipl.h s390/ipl: Add missing SCSI loadparm attributes to /sys/firmware 2014-09-01 09:56:29 +02:00
irq_regs.h
irq.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-04-08 12:02:28 -07:00
irqflags.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
isc.h s390/pci: PCI adapter interrupts for MSI/MSI-X 2012-11-30 17:47:21 +01:00
itcw.h
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
Kbuild lib/scatterlist: make ARCH_HAS_SG_CHAIN an actual Kconfig 2014-08-08 15:57:26 -07:00
kdebug.h
kexec.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
kmap_types.h
kprobes.h s390/kprobes: add support for pc-relative long displacement instructions 2013-09-11 15:58:52 -07:00
kvm_host.h KVM: s390: remove the tasklet used by the hrtimer 2014-07-21 13:22:42 +02:00
kvm_para.h UAPI: (Scripted) Disintegrate arch/s390/include/asm 2012-10-09 09:47:31 +01:00
linkage.h
local64.h
local.h
lowcore.h At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
mathemu.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
mman.h s390/mm: Fix crst upgrade of mmap with MAP_FIXED 2013-02-14 15:55:22 +01:00
mmu_context.h s390/uaccess: always load the kernel ASCE after task switch 2014-06-10 10:48:28 +02:00
mmu.h KVM: s390: Adding skey bit to mmu context 2014-04-22 09:36:23 +02:00
module.h Make most arch asm/module.h files use asm-generic/module.h 2012-09-28 14:31:03 +09:30
mutex.h mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef 2013-09-28 12:46:21 +02:00
nmi.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
os_info.h
page.h arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
pci_clp.h s390/pci: add some new arch specific pci attributes 2014-05-20 08:58:50 +02:00
pci_debug.h s390/pci: remove CONFIG_PCI_DEBUG dependancy 2013-10-24 17:17:16 +02:00
pci_dma.h s390/pci: DMA support 2012-11-30 17:47:23 +01:00
pci_insn.h s390/pci: cleanup function information block 2013-10-24 17:17:17 +02:00
pci_io.h s390/pci: cleanup function names 2013-08-22 12:20:03 +02:00
pci.h s390/pci: add some new arch specific pci attributes 2014-05-20 08:58:50 +02:00
percpu.h s390/percpu: remove this_cpu_xor() implementation 2013-10-31 09:53:58 +01:00
perf_event.h s390/cpum_sf: Add flag to process full SDBs only 2013-12-16 14:38:01 +01:00
pgalloc.h KVM: s390: Clear storage keys 2014-04-22 09:36:24 +02:00
pgtable.h KVM: s390/mm: Fix guest storage key corruption in ptep_set_access_flags 2014-09-02 10:30:43 +02:00
processor.h arch, locking: Ciao arch_mutex_cpu_relax() 2014-07-17 12:32:47 +02:00
ptrace.h At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
qdio.h s390/qdio: add helpers to manage qdio buffers 2014-07-22 09:26:13 +02:00
reset.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
runtime_instr.h s390: add support for runtime instrumentation 2012-09-26 15:45:02 +02:00
rwsem.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
schid.h UAPI: (Scripted) Disintegrate arch/s390/include/asm 2012-10-09 09:47:31 +01:00
sclp.h s390/sclp: add sclp_get_ibc function 2014-05-16 14:57:30 +02:00
scsw.h s390: add eadm related structures 2012-09-26 15:44:57 +02:00
seccomp.h
sections.h
segment.h
serial.h s390: convert interrupt handling to use generic hardirq 2013-08-22 12:20:04 +02:00
setup.h s390: remove unused MACHINE_FLAG_RRBM 2014-09-09 08:53:26 +02:00
sfp-machine.h
sfp-util.h
shmparam.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
signal.h s390: switch to generic old sigaction() 2013-02-03 18:16:14 -05:00
sigp.h s390/smp: fix smp_stop_cpu() for !CONFIG_SMP 2014-04-09 10:19:12 +02:00
smp.h s390/smp: Avoid busy loop after halt and "begin" on z/VM 2014-05-20 08:58:45 +02:00
sparsemem.h s390/mm: remove MAX_PHYSADDR_BITS define 2012-08-08 07:32:55 -07:00
spinlock_types.h s390/spinlock: cleanup spinlock code 2014-05-20 08:58:41 +02:00
spinlock.h s390/spinlock,rwlock: always to a load-and-test first 2014-05-20 08:58:53 +02:00
string.h s390/string: provide asm lib functions for memcpy and memcmp 2012-09-26 15:44:50 +02:00
switch_to.h s390: fix restore of invalid floating-point-control 2014-07-16 10:48:12 +02:00
syscall.h s390/seccomp: fix error return for filtered system calls 2014-07-28 10:02:31 +02:00
sysinfo.h s390/sysinfo,stsi: change return code handling 2012-09-26 15:45:12 +02:00
termios.h UAPI: (Scripted) Disintegrate arch/s390/include/asm 2012-10-09 09:47:31 +01:00
thread_info.h s390: split TIF bits into CIF, PIF and TIF bits 2014-05-20 08:58:47 +02:00
timex.h s390/time: fix get_tod_clock_ext inline assembly 2013-10-31 09:52:48 +01:00
tlb.h mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts 2014-04-25 16:05:40 -07:00
tlbflush.h s390/mm,tlb: optimize TLB flushing for zEC12 2014-04-03 14:31:00 +02:00
topology.h sched, s390: Create a dedicated topology table 2014-05-07 13:33:50 +02:00
types.h UAPI: (Scripted) Disintegrate arch/s390/include/asm 2012-10-09 09:47:31 +01:00
uaccess.h s390/uaccess: provide inline variants of get_user/put_user 2014-05-20 08:58:50 +02:00
unaligned.h
unistd.h consolidate cond_syscall and SYSCALL_ALIAS declarations 2013-03-03 22:55:19 -05:00
user.h s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
vdso.h s390/vdso: add vdso support for coarse clocks 2014-09-09 08:53:27 +02:00
vga.h vga: compile fix, disable vga for s390 2012-11-30 17:47:28 +01:00
vtime.h vtime: Describe overriden functions in dedicated arch headers 2013-08-14 17:14:53 +02:00
vtimer.h s390/vtimer: rework virtual timer interface 2012-07-20 11:15:08 +02:00
xor.h