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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>		18 years ago
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arc	[MIPS] ARC: Fix several compiler warnings.	18 years ago
au1000	[MIPS] Fix pb1500 reg B access	18 years ago
basler/excite	[MIPS] excite: use __maybe_unused	18 years ago
boot	…
cobalt	[MIPS] add io_map_base to pci_controller on Cobalt	18 years ago
configs	[MIPS] EMMA2RH: Disable GEN_RTC, it can't possibly work.	18 years ago
ddb5xxx	[MIPS] Misc fixes for plat_irq_dispatch functions	18 years ago
dec	[MIPS] DEC: Remove call to register_prom_console.	18 years ago
emma2rh	[MIPS] EMMA2RH: remove dead KGDB code	18 years ago
gt64120	[MIPS] merge GT64111 PCI routines and GT64120 PCI_0 routines	18 years ago
jazz	mips-jazz: correct flags for timer io resource	18 years ago
jmr3927	parse errors in ifdefs	18 years ago
kernel	[MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores	18 years ago
lasat	[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.	18 years ago
lib	[MIPS] Change libgcc-style functions from lib-y to obj-y	18 years ago
lib-32	[MIPS] Kill redundant EXTRA_AFLAGS	18 years ago
lib-64	[MIPS] Kill redundant EXTRA_AFLAGS	18 years ago
math-emu	header cleaning: don't include smp_lock.h when not used	18 years ago
mips-boards	[MIPS] Don't drag a platform specific header into generic arch code.	18 years ago
mm	[MIPS] Make dma_map_sg handle sg elements which are longer than one page	18 years ago
momentum	[MIPS] Remove Momenco Jaguar ATX support	18 years ago
oprofile	[MIPS] Separate performance counter interrupts	18 years ago
pci	parse errors in ifdefs	18 years ago
philips/pnx8550	[MIPS] Misc fixes for plat_irq_dispatch functions	18 years ago
pmc-sierra	serial driver PMC MSP71xx	18 years ago
qemu	[MIPS] Remove prototype for deleted function qemu_handle_int	18 years ago
sgi-ip22	Convert SGI IP22 and specific drivers to platform_device.	18 years ago
sgi-ip27	[MIPS] Fix IP27 build	18 years ago
sgi-ip32	meth driver renovation	18 years ago
sibyte	[MIPS] Add bcm1480 ZBus trace support, fix wait related bugs	18 years ago
sni	[MIPS] Fix VGA corruption on RM300C	18 years ago
tx4927	ne: MIPS: Use platform_driver for ne on RBTX49XX	18 years ago
tx4938	ne: MIPS: Use platform_driver for ne on RBTX49XX	18 years ago
vr41xx	[MIPS] update vr41xx Kconfig	18 years ago
Kconfig	[MIPS] AP/SP requires shadow registers, auto enable support.	18 years ago
Kconfig.debug	[MIPS] SMTC: Fix cut'n'paste bug in Kconfig.debug	18 years ago
Makefile	[MIPS] Run checksyscalls for N32 and O32 ABI	18 years ago
defconfig	[MIPS] Viper2: Remove defective support.	18 years ago