Ralf Baechle 4b3e975e4a [MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores ... The idle loop goes to sleep using the WAIT instruction if !need_resched(). This has is suffering from from a race condition that if if just after need_resched has returned 0 an interrupt might set TIF_NEED_RESCHED but we've just completed the test so go to sleep anyway. This would be trivial to fix by just disabling interrupts during that sequence as in: local_irq_disable(); if (!need_resched()) __asm__("wait"); local_irq_enable(); but the processor architecture leaves it undefined if a processor calling WAIT with interrupts disabled will ever restart its pipeline and indeed some processors have made use of the freedom provided by the architecture definition. This has been resolved and the Config7.WII bit indicates that the use of WAIT is safe on 24K, 24KE and 34K cores. It also is safe on 74K starting revision 2.1.0 so enable the use of WAIT with interrupts disabled for 74K based on a c0_prid of at least that. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2007-07-06 16:17:11 +01:00
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arc	…
ddb5xxx	…
dec	…
emma2rh	…
ip32	…
jmr3927	…
lasat	…
mach-atlas	…
mach-au1x00	au1550 SPI controller driver	2007-05-08 11:15:16 -07:00
mach-cobalt	[MIPS] Add extern cobalt_board_id	2007-05-11 14:28:32 +01:00
mach-db1x00	…
mach-dec	…
mach-emma2rh	…
mach-ev64120	…
mach-excite	…
mach-generic	…
mach-ip22	…
mach-ip27	…
mach-ip32	[MIPS] Fix include wrapper symbol definitions in IP32 code.	2007-07-04 15:53:15 +01:00
mach-jazz	…
mach-jmr3927	…
mach-lasat	…
mach-mips	…
mach-ocelot	…
mach-ocelot3	…
mach-pb1x00	…
mach-pnx8550	…
mach-qemu	…
mach-rm	…
mach-sibyte	…
mach-sim	…
mach-vr41xx	…
mach-wrppmc	…
mach-yosemite	…
mips-boards	[MIPS] Don't drag a platform specific header into generic arch code.	2007-06-20 22:27:10 +01:00
pci	…
sgi	Convert SGI IP22 and specific drivers to platform_device.	2007-05-11 17:00:29 +01:00
sibyte	…
sn	…
tx4927	…
tx4938	…
vr41xx	…
xtalk	…
8253pit.h	…
Kbuild	…
a.out.h	…
abi.h	…
addrspace.h	[MIPS] 64-bit TO_PHYS_MASK macro for RM9000 processors	2007-07-06 16:17:10 +01:00
asm.h	…
asmmacro-32.h	…
asmmacro-64.h	…
asmmacro.h	[MIPS] Remove duplicate fpu enable hazard code.	2007-06-06 19:34:31 +01:00
atomic.h	[MIPS] Fix build error in atomic64_cmpxchg	2007-05-11 14:28:33 +01:00
auxvec.h	…
barrier.h	…
bcache.h	…
bitops.h	[MIPS] Remove a duplicated local variable in test_and_clear_bit()	2007-06-26 19:57:33 +02:00
bootinfo.h	[MIPS] Remove Momenco Jaguar ATX support	2007-05-11 14:28:31 +01:00
branch.h	…
break.h	…
bug.h	…
bugs.h	…
byteorder.h	…
cache.h	…
cachectl.h	…
cacheflush.h	…
cacheops.h	…
checksum.h	…
compat-signal.h	[MIPS] use compat_siginfo in rt_sigframe_n32	2007-06-26 19:57:33 +02:00
compat.h	…
compiler.h	…
cpu-features.h	…
cpu-info.h	…
cpu.h	[MIPS] Add macros to encode processor revisions.	2007-07-06 16:17:11 +01:00
cputime.h	…
current.h	…
debug.h	…
delay.h	…
device.h	…
div64.h	…
dma-mapping.h	…
dma.h	…
ds1216.h	…
ds1286.h	…
dsp.h	…
elf.h	…
emergency-restart.h	…
errno.h	…
fcntl.h	…
fixmap.h	…
floppy.h	…
fpregdef.h	…
fpu.h	[MIPS] FPU hazard handling	2007-05-11 14:28:31 +01:00
fpu_emulator.h	…
futex.h	…
gdb-stub.h	…
gfx.h	…
gt64120.h	…
gt64240.h	…
hardirq.h	…
hazards.h	[MIPS] SB1: Build fix.	2007-05-11 14:28:31 +01:00
highmem.h	[MIPS] Remove LIMITED_DMA support	2007-05-11 14:28:31 +01:00
hw_irq.h	…
i8259.h	…
ide.h	…
inst.h	…
inventory.h	…
io.h	…
ioctl.h	…
ioctls.h	…
ipc.h	…
ipcbuf.h	…
irq.h	[MIPS] Don't drag a platform specific header into generic arch code.	2007-06-20 22:27:10 +01:00
irq_cpu.h	…
irq_regs.h	…
irqflags.h	…
isadep.h	…
jazz.h	…
jazzdma.h	…
kdebug.h	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
kexec.h	kdump/kexec: calculate note size at compile time	2007-05-08 11:15:07 -07:00
kmap_types.h	…
kspd.h	…
linkage.h	…
local.h	local_t: mips extension	2007-05-08 11:15:20 -07:00
m48t35.h	…
m48t37.h	…
marvell.h	…
mc146818-time.h	…
mc146818rtc.h	…
mips_mt.h	…
mipsmtregs.h	…
mipsprom.h	…
mipsregs.h	[MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores	2007-07-06 16:17:11 +01:00
mman.h	…
mmu.h	…
mmu_context.h	…
mmzone.h	…
module.h	[MIPS] SMTC and non-SMTC kernel and modules are incompatible	2007-06-26 19:57:34 +02:00
msc01_ic.h	[MIPS] MT: Reenable EIC support and add support for SOCit SC.	2007-05-11 14:28:31 +01:00
msgbuf.h	…
mutex.h	…
namei.h	…
nile4.h	…
paccess.h	…
page.h	[MIPS] Remove LIMITED_DMA support	2007-05-11 14:28:31 +01:00
param.h	…
parport.h	…
pci.h	…
percpu.h	…
pgalloc.h	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
pgtable-32.h	…
pgtable-64.h	…
pgtable-bits.h	…
pgtable.h	Clean up mostly unused IOSPACE macros	2007-05-08 11:15:13 -07:00
pmon.h	…
poll.h	Consolidate asm/poll.h	2007-05-11 08:29:34 -07:00
posix_types.h	…
prctl.h	…
prefetch.h	…
processor.h	…
ptrace.h	[MIPS] die(): Properly declare as non-returning	2007-07-04 15:53:15 +01:00
qemu.h	…
r4kcache.h	…
reboot.h	…
reg.h	…
regdef.h	…
resource.h	…
rm9k-ocd.h	…
rtc.h	…
rtlx.h	…
scatterlist.h	…
sections.h	…
segment.h	…
semaphore.h	…
sembuf.h	…
serial.h	[MIPS] Remove Momenco Jaguar ATX support	2007-05-11 14:28:31 +01:00
setup.h	…
sgialib.h	…
sgiarcs.h	…
sgidefs.h	…
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	…
sim.h	…
smp.h	…
smtc.h	…
smtc_ipi.h	…
smtc_proc.h	…
sni.h	…
socket.h	…
sockios.h	…
sparsemem.h	…
spinlock.h	…
spinlock_types.h	…
stackframe.h	[MIPS] Fix KMODE for the R3000	2007-06-11 18:20:53 +01:00
stacktrace.h	…
stat.h	…
statfs.h	…
string.h	…
suspend.h	…
sysmips.h	…
system.h	[MIPS] Define and use vi_handler_t for vectored interrupt handlers.	2007-05-11 14:28:30 +01:00
termbits.h	…
termios.h	…
thread_info.h	…
time.h	…
timex.h	…
titan_dep.h	…
tlb.h	…
tlbdebug.h	…
tlbflush.h	…
topology.h	…
traps.h	…
tx3912.h	…
types.h	…
uaccess.h	…
ucontext.h	…
unaligned.h	…
unistd.h	[MIPS] Add whitelists for checksyscalls.sh	2007-07-04 15:53:16 +01:00
user.h	…
vga.h	…
vpe.h	…
war.h	[MIPS] RM7000: Enable ICACHE_REFILLS_WORKAROUND_WAR.	2007-07-06 16:17:11 +01:00
watch.h	…
wbflush.h	…
xor.h	…
xxs1500.h	…