Chris Metcalf 1337173148 arch/tile: fix __ndelay etc to work better ...

The current implementations of __ndelay and __udelay call a hypervisor
service to delay, but the hypervisor service isn't actually implemented
very well, and the consensus is that Linux should handle figuring this
out natively and not use a hypervisor service.

By converting nanoseconds to cycles, and then spinning until the
cycle counter reaches the desired cycle, we get several benefits:
first, we are sensitive to the actual clock speed; second, we use
less power by issuing a slow SPR read once every six cycles while
we delay; and third, we properly handle the case of an interrupt by
exiting at the target time rather than after some number of cycles.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

2011-03-01 16:20:04 -05:00

..

asm-offsets.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

atomic_32.h

arch/tile: Various cleanups.

2010-08-13 08:52:19 -04:00

atomic.h

arch/tile: Fix atomic_read() definition to use ACCESS_ONCE

2011-02-25 08:46:38 -05:00

auxvec.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

backtrace.h

arch/tile: support new info op generated by compiler

2010-10-15 15:39:25 -04:00

bitops_32.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

bitops.h

bitops: make asm-generic/bitops/find.h more generic

2010-10-09 21:51:44 +02:00

bitsperlong.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

bug.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

bugs.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

byteorder.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

cache.h

arch/tile: catch up with section naming convention in 2.6.35

2011-03-01 16:18:52 -05:00

cacheflush.h

drivers/net/tile/: on-chip network drivers for the tile architecture

2010-11-24 13:11:18 -05:00

checksum.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

compat.h

arch/tile: Use <asm-generic/syscalls.h>

2010-10-14 14:34:33 -04:00

cputime.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

current.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

delay.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

device.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

div64.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

dma-mapping.h

dma-mapping: remove dma_is_consistent API

2010-08-11 08:59:21 -07:00

dma.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

elf.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

emergency-restart.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

errno.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

fcntl.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

fixmap.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

ftrace.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

futex.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

hardirq.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

hardwall.h

arch/tile: Add driver to enable access to the user dynamic network.

2010-07-06 13:34:15 -04:00

highmem.h

arch/tile: complete migration to new kmap_atomic scheme

2010-11-01 15:30:36 -04:00

homecache.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

hugetlb.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

hv_driver.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

hw_irq.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

ide.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

io.h

pci root complex: support for tile architecture

2010-11-24 13:13:49 -05:00

ioctl.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

ioctls.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

ipc.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

ipcbuf.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

irq_regs.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

irq.h

arch/tile: Enable more sophisticated IRQ model for 32-bit chips.

2010-07-06 13:34:01 -04:00

irqflags.h

Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2010-10-26 17:25:38 -07:00

Kbuild

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

kdebug.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

kexec.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

kmap_types.h

arch/tile: complete migration to new kmap_atomic scheme

2010-11-01 15:30:36 -04:00

linkage.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

local.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

memprof.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

mman.h

arch/tile: provide a definition of MAP_STACK

2010-10-14 15:09:02 -04:00

mmu_context.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

mmu.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

mmzone.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

module.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

msgbuf.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

mutex.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

opcode_constants_32.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

opcode_constants_64.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

opcode_constants.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

opcode-tile_32.h

arch/tile: Shrink the tile-opcode files considerably.

2010-07-06 13:40:56 -04:00

opcode-tile_64.h

arch/tile: Shrink the tile-opcode files considerably.

2010-07-06 13:40:56 -04:00

opcode-tile.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

page.h

arch/tile: parameterize system PLs to support KVM port

2010-10-15 15:38:09 -04:00

param.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

pci.h

pci root complex: support for tile architecture

2010-11-24 13:13:49 -05:00

percpu.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

pgalloc.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

pgtable_32.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

pgtable.h

arch/tile: complete migration to new kmap_atomic scheme

2010-11-01 15:30:36 -04:00

poll.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

posix_types.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

processor.h

drivers/net/tile/: on-chip network drivers for the tile architecture

2010-11-24 13:11:18 -05:00

ptrace.h

arch/tile: bug fix: exec'ed task thought it was still single-stepping

2011-03-01 16:19:58 -05:00

resource.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

scatterlist.h

tile: remove unused ISA_DMA_THRESHOLD define

2010-08-11 10:38:06 -04:00

sections.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

sembuf.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

setup.h

arch/tile: export only COMMAND_LINE_SIZE to userspace.

2010-08-15 12:14:41 -04:00

shmbuf.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

shmparam.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

sigcontext.h

arch/tile: Change struct sigcontext to be more useful

2010-09-15 11:16:08 -04:00

sigframe.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

siginfo.h

arch/tile: Fix a couple of issues with the COMPAT code for TILE-Gx.

2010-08-13 08:32:21 -04:00

signal.h

arch/tile: handle rt_sigreturn() more cleanly

2010-12-17 16:59:29 -05:00

smp.h

arch/tile: Enable more sophisticated IRQ model for 32-bit chips.

2010-07-06 13:34:01 -04:00

socket.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

sockios.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

spinlock_32.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

spinlock_types.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

spinlock.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

stack.h

arch/tile: Miscellaneous cleanup changes.

2010-07-06 13:41:51 -04:00

stat.h

asm-generic/stat.h: support 64-bit file time_t for stat()

2010-11-01 15:31:29 -04:00

statfs.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

string.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

swab.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

syscall.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

syscalls.h

arch/tile: Use <asm-generic/syscalls.h>

2010-10-14 14:34:33 -04:00

system.h

arch/tile: parameterize system PLs to support KVM port

2010-10-15 15:38:09 -04:00

termbits.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

termios.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

thread_info.h

arch/tile: catch up on various minor cleanups.

2010-07-06 13:42:15 -04:00

timex.h

arch/tile: fix __ndelay etc to work better

2011-03-01 16:20:04 -05:00

tlb.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

tlbflush.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

topology.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

traps.h

arch/tile: enable single-step support for TILE-Gx

2010-10-15 15:38:26 -04:00

types.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

uaccess.h

arch/tile: Various cleanups.

2010-08-13 08:52:19 -04:00

ucontext.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

unaligned.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

unistd.h

asm-generic/stat.h: support 64-bit file time_t for stat()

2010-11-01 15:31:29 -04:00

user.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00

xor.h

arch/tile: core support for Tilera 32-bit chips.

2010-06-04 17:11:18 -04:00