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>
2005-06-21 18:46:18 -07:00
[NETFILTER]: Kill lockhelp.h
2005-06-21 14:01:30 -07:00
[ATALK]: endian annotations
2005-06-20 13:32:05 -07:00
[PATCH] Driver core: change device_attribute callbacks
2005-06-20 15:15:31 -07:00
[SCSI] Add DMA mask constants other than 32 and 64 bit
2005-06-17 20:37:11 -05:00
[PATCH] libfs: add simple attribute files
2005-06-20 15:15:30 -07:00
[PATCH] ia64 uncached alloc
2005-06-21 18:46:18 -07:00
[PATCH] Periodically drain non local pagesets
2005-06-21 18:46:18 -07:00
[PATCH] Hugepage consolidation
2005-06-21 18:46:15 -07:00
[PATCH] I2C: add i2c sensor_device_attribute and macros
2005-06-20 15:15:36 -07:00
[PATCH] INPUT: move to use the new class code, instead of class_simple
2005-06-20 15:15:04 -07:00
[NET] Rename open_request to request_sock
2005-06-18 22:47:21 -07:00
[NET] Rename open_request to request_sock
2005-06-18 22:47:21 -07:00
[PATCH] add klist_node_attached() to determine if a node is on a list or not.
2005-06-20 15:15:17 -07:00
[PATCH] kset_hotplug_ops->name shoudl return const char *
2005-06-20 15:15:01 -07:00
[PATCH] node local per-cpu-pages
2005-06-21 18:46:16 -07:00
[PATCH] node local per-cpu-pages
2005-06-21 18:46:16 -07:00
[NETFILTER]: Kill nf_debug
2005-06-21 14:01:57 -07:00
[NETLINK]: netlink_callback structure needs 5 args not 4
2005-06-21 12:38:48 -07:00
[PATCH] Driver core: unregister_node() for hotplug use
2005-06-20 15:15:29 -07:00
[PATCH] __read_page_state(): pass unsigned long instead of unsigned
2005-06-21 18:46:17 -07:00
[PATCH] VM: add __GFP_NORECLAIM
2005-06-21 18:46:14 -07:00
[IPSEC]: Add XFRM_STATE_NOPMTUDISC flag
2005-06-20 13:21:43 -07:00
[RTNETLINK]: Add RTA_(PUT|GET) shortcuts for u8, u16, and flag
2005-06-18 22:52:36 -07:00
[PATCH] Avoiding mmap fragmentation
2005-06-21 18:46:16 -07:00
[NETFILTER]: Kill nf_debug
2005-06-21 14:01:57 -07:00
[SLAB] Introduce kmem_cache_name
2005-06-18 22:46:19 -07:00
[PATCH] smp_processor_id() cleanup
2005-06-21 18:46:13 -07:00
[PATCH] vm: try_to_free_pages unused argument
2005-06-21 18:46:17 -07:00
[PATCH] sysfs-iattr: add sysfs_setattr
2005-06-20 15:15:37 -07:00
[NET] Generalise tcp_listen_opt
2005-06-18 22:47:59 -07:00
[PATCH] USB: move the usb hcd code to use the new class code.
2005-06-20 15:15:07 -07:00
[IPSEC]: Add XFRM_STATE_NOPMTUDISC flag
2005-06-20 13:21:43 -07:00
