2010-05-29 03:09:12 +00:00
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#
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# Makefile for the Linux/TILE kernel.
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#
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extra-y := vmlinux.lds head_$(BITS).o
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obj-y := backtrace.o entry.o init_task.o irq.o messaging.o \
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pci-dma.o proc.o process.o ptrace.o reboot.o \
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setup.o signal.o single_step.o stack.o sys.o time.o traps.o \
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intvec_$(BITS).o regs_$(BITS).o tile-desc_$(BITS).o
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arch/tile: Add driver to enable access to the user dynamic network.
This network (the "UDN") connects all the cpus on the chip in a
wormhole-routed dynamic network. Subrectangles of the chip can
be allocated by a "create" ioctl on /dev/hardwall, and then to access the
UDN in that rectangle, tasks must perform an "activate" ioctl on that
same file object after affinitizing themselves to a single cpu in
the region. Sending a wormhole-routed message that tries to leave
that subrectangle causes all activated tasks to receive a SIGILL
(just as they would if they tried to access the UDN without first
activating themselves to a hardwall rectangle).
The original submission of this code to LKML had the driver
instantiated under /proc/tile/hardwall. Now we just use a character
device for this, conventionally /dev/hardwall. Some futures planning
for the TILE-Gx chip suggests that we may want to have other types of
devices that share the general model of "bind a task to a cpu, then
'activate' a file descriptor on a pseudo-device that gives access to
some hardware resource". As such, we are using a device rather
than, for example, a syscall, to set up and activate this code.
As part of this change, the compat_ptr() declaration was fixed and used
to pass the compat_ioctl argument to the normal ioctl. So far we limit
compat code to 2GB, so the difference between zero-extend and sign-extend
(the latter being correct, eventually) had been overlooked.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2010-06-25 21:00:56 +00:00
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obj-$(CONFIG_HARDWALL) += hardwall.o
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2010-05-29 03:09:12 +00:00
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obj-$(CONFIG_TILEGX) += futex_64.o
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obj-$(CONFIG_COMPAT) += compat.o compat_signal.o
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obj-$(CONFIG_SMP) += smpboot.o smp.o tlb.o
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obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
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