linux_dsm_epyc7002/include/asm-generic
Linus Torvalds c17b0aadb7 asm-generic fixes for v4.17-rc1
I have one regression fix for a minor build problem after the architecture
 removal series, plus a rework of the barriers in the readl/writel
 functions, thanks to work by Sinan Kaya:
 
 This started from a discussion on the linuxpcc and rdma mailing lists
 [1]. To summarize, we decided that architectures are responsible to
 serialize readl() and writel() accesses on a device MMIO space relative
 to DMA performed by that device.
 
 This series provides a pessimistic implementation of that behavior for
 asm-generic/io.h, which is in turn used by a number of architectures
 (h8300, microblaze, nios2, openrisc, s390, sparc, um, unicore32, and
 xtensa). Some of those presumably need no extra barriers, or something
 weaker than rmb()/wmb(), and they are advised to override the new default
 for better performance.
 
 For inb()/outb(), the same barriers are used, but architectures might
 want to add another barrier to outb() here if that can guarantee
 non-posted behavior (some architectures can, others cannot do that).
 
 The readl_relaxed()/writel_relaxed() family of functions retains the
 existing behavior with no extra barriers.
 
 [1]: https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-March/170481.html
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Merge tag 'asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic fixes from Arnd Bergmann:
 "I have one regression fix for a minor build problem after the
  architecture removal series, plus a rework of the barriers in the
  readl/writel functions, thanks to work by Sinan Kaya:

  This started from a discussion on the linuxpcc and rdma mailing
  lists[1]. To summarize, we decided that architectures are responsible
  to serialize readl() and writel() accesses on a device MMIO space
  relative to DMA performed by that device.

  This series provides a pessimistic implementation of that behavior for
  asm-generic/io.h, which is in turn used by a number of architectures
  (h8300, microblaze, nios2, openrisc, s390, sparc, um, unicore32, and
  xtensa). Some of those presumably need no extra barriers, or something
  weaker than rmb()/wmb(), and they are advised to override the new
  default for better performance.

  For inb()/outb(), the same barriers are used, but architectures might
  want to add another barrier to outb() here if that can guarantee
  non-posted behavior (some architectures can, others cannot do that).

  The readl_relaxed()/writel_relaxed() family of functions retains the
  existing behavior with no extra barriers"

[1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-March/170481.html

* tag 'asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  io: change writeX_relaxed() to remove barriers
  io: change readX_relaxed() to remove barriers
  dts: remove cris & metag dts hard link file
  io: change inX() to have their own IO barrier overrides
  io: change outX() to have their own IO barrier overrides
  io: define stronger ordering for the default writeX() implementation
  io: define stronger ordering for the default readX() implementation
  io: define several IO & PIO barrier types for the asm-generic version
2018-04-12 09:15:48 -07:00
..
bitops
4level-fixup.h
5level-fixup.h
asm-offsets.h
asm-prototypes.h
atomic64.h
atomic-instrumented.h
atomic-long.h
atomic.h
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h
bitops.h
bitsperlong.h
bug.h
bugs.h
cache.h
cacheflush.h
checksum.h
cmpxchg-local.h
cmpxchg.h
current.h
delay.h
device.h
div64.h
dma-contiguous.h
dma-mapping.h
dma.h
early_ioremap.h
emergency-restart.h
error-injection.h
exec.h
export.h
extable.h
fb.h
fixmap.h
ftrace.h
futex.h
getorder.h
gpio.h
hardirq.h
hugetlb.h
hw_irq.h
ide_iops.h
int-ll64.h
io.h asm-generic fixes for v4.17-rc1 2018-04-12 09:15:48 -07:00
ioctl.h
iomap.h
irq_regs.h
irq_work.h
irq.h
irqflags.h
kdebug.h
kmap_types.h
kprobes.h
kvm_para.h
linkage.h
local64.h
local.h
mcs_spinlock.h
memory_model.h
mm_hooks.h
mm-arch-hooks.h
mmu_context.h
mmu.h
module.h
msi.h
page.h
param.h
parport.h
pci_iomap.h
pci.h
percpu.h
pgalloc.h
pgtable-nop4d-hack.h
pgtable-nop4d.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h
preempt.h
ptrace.h
qrwlock_types.h
qrwlock.h
qspinlock_types.h
qspinlock.h
resource.h
rwsem.h
seccomp.h
sections.h
segment.h
serial.h
set_memory.h
signal.h
simd.h
sizes.h
spinlock.h
statfs.h
string.h
switch_to.h
syscall.h
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h
tlbflush.h
topology.h
trace_clock.h
uaccess.h
unaligned.h
unistd.h
user.h
vga.h
vmlinux.lds.h
vtime.h
word-at-a-time.h
xor.h