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Jes Sorensen f14f75b811 [PATCH] ia64 uncached alloc ... This patch contains the ia64 uncached page allocator and the generic allocator (genalloc). The uncached allocator was formerly part of the SN2 mspec driver but there are several other users of it so it has been split off from the driver. The generic allocator can be used by device driver to manage special memory etc. The generic allocator is based on the allocator from the sym53c8xx_2 driver. Various users on ia64 needs uncached memory. The SGI SN architecture requires it for inter-partition communication between partitions within a large NUMA cluster. The specific user for this is the XPC code. Another application is large MPI style applications which use it for synchronization, on SN this can be done using special 'fetchop' operations but it also benefits non SN hardware which may use regular uncached memory for this purpose. Performance of doing this through uncached vs cached memory is pretty substantial. This is handled by the mspec driver which I will push out in a seperate patch. Rather than creating a specific allocator for just uncached memory I came up with genalloc which is a generic purpose allocator that can be used by device drivers and other subsystems as they please. For instance to handle onboard device memory. It was derived from the sym53c7xx_2 driver's allocator which is also an example of a potential user (I am refraining from modifying sym2 right now as it seems to have been under fairly heavy development recently). On ia64 memory has various properties within a granule, ie. it isn't safe to access memory as uncached within the same granule as currently has memory accessed in cached mode. The regular system therefore doesn't utilize memory in the lower granules which is mixed in with device PAL code etc. The uncached driver walks the EFI memmap and pulls out the spill uncached pages and sticks them into the uncached pool. Only after these chunks have been utilized, will it start converting regular cached memory into uncached memory. Hence the reason for the EFI related code additions. Signed-off-by: Jes Sorensen <jes@wildopensource.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		20 years ago
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Makefile	[PATCH] ia64 uncached alloc	20 years ago
acpi-ext.c	Linux-2.6.12-rc2	20 years ago
acpi.c	[IA64] use common pxm function	20 years ago
asm-offsets.c	Linux-2.6.12-rc2	20 years ago
brl_emu.c	Linux-2.6.12-rc2	20 years ago
cyclone.c	Linux-2.6.12-rc2	20 years ago
domain.c	Linux-2.6.12-rc2	20 years ago
efi.c	[PATCH] ia64 uncached alloc	20 years ago
efi_stub.S	Linux-2.6.12-rc2	20 years ago
entry.S	[PATCH] VM: early zone reclaim	20 years ago
entry.h	Linux-2.6.12-rc2	20 years ago
fsys.S	[IA64] Fix race condition in the rt_sigprocmask fastcall	20 years ago
gate-data.S	Linux-2.6.12-rc2	20 years ago
gate.S	Linux-2.6.12-rc2	20 years ago
gate.lds.S	Linux-2.6.12-rc2	20 years ago
head.S	[IA64] Fix build errors for !HOTPLUG case.	20 years ago
ia64_ksyms.c	Linux-2.6.12-rc2	20 years ago
init_task.c	Linux-2.6.12-rc2	20 years ago
iosapic.c	[IA64] iosapic.c: typo ... s/spin_unlock_irq/spin_unlock/	20 years ago
irq.c	Linux-2.6.12-rc2	20 years ago
irq_ia64.c	[IA64] vector sharing (Large I/O system support)	20 years ago
irq_lsapic.c	Linux-2.6.12-rc2	20 years ago
ivt.S	Linux-2.6.12-rc2	20 years ago
machvec.c	Linux-2.6.12-rc2	20 years ago
mca.c	[IA64] Cleanup compile warnings for ski config	20 years ago
mca_asm.S	[IA64] cpu hotplug: return offlined cpus to SAL	20 years ago
mca_drv.c	[IA64] MCA recovery improvements	20 years ago
mca_drv.h	Linux-2.6.12-rc2	20 years ago
mca_drv_asm.S	[IA64] MCA recovery improvements	20 years ago
minstate.h	[IA64] Fix stack placement when INIT hits in kernel mode.	20 years ago
module.c	[IA64] Module gp must point to valid memory	20 years ago
pal.S	Linux-2.6.12-rc2	20 years ago
palinfo.c	Linux-2.6.12-rc2	20 years ago
patch.c	Linux-2.6.12-rc2	20 years ago
perfmon.c	[IA64] Use "PER_CPU" form of EXPORT macro	20 years ago
perfmon_default_smpl.c	[IA64] perfmon: make pfm_sysctl a global, and other cleanup	20 years ago
perfmon_generic.h	Linux-2.6.12-rc2	20 years ago
perfmon_itanium.h	Linux-2.6.12-rc2	20 years ago
perfmon_mckinley.h	Linux-2.6.12-rc2	20 years ago
process.c	[IA64] Fix two warnings introduced by perfmon patches.	20 years ago
ptrace.c	[PATCH] ia64: fix floating-point preemption problem	20 years ago
sal.c	Linux-2.6.12-rc2	20 years ago
salinfo.c	Linux-2.6.12-rc2	20 years ago
semaphore.c	Linux-2.6.12-rc2	20 years ago
setup.c	[IA64] Update comment to describe modes set in default control register.	20 years ago
sigframe.h	Linux-2.6.12-rc2	20 years ago
signal.c	[IA64] fix ia64 syscall auditing	20 years ago
smp.c	Linux-2.6.12-rc2	20 years ago
smpboot.c	[IA64] fix "section mismatch" compile-time-error	20 years ago
sys_ia64.c	[IA64] sys_mmap doesn't follow posix.1 when parameter len=0	20 years ago
time.c	Linux-2.6.12-rc2	20 years ago
topology.c	Linux-2.6.12-rc2	20 years ago
traps.c	[PATCH] ia64: fix floating-point preemption problem	20 years ago
unaligned.c	Linux-2.6.12-rc2	20 years ago
uncached.c	[PATCH] ia64 uncached alloc	20 years ago
unwind.c	[IA64] Tighten up unw_unwind_to_user check	20 years ago
unwind_decoder.c	Linux-2.6.12-rc2	20 years ago
unwind_i.h	Linux-2.6.12-rc2	20 years ago
vmlinux.lds.S	Linux-2.6.12-rc2	20 years ago