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* Pull for-2.6.31 into releaseTony Luck2009-06-171-2/+1
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| * [IA64] Convert ia64 to use int-ll64.hMatthew Wilcox2009-06-171-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is generally agreed that it would be beneficial for u64 to be an unsigned long long on all architectures. ia64 (in common with several other 64-bit architectures) currently uses unsigned long. Migrating piecemeal is too painful; this giant patch fixes all compilation warnings and errors that come as a result of switching to use int-ll64.h. Note that userspace will still see __u64 defined as unsigned long. This is important as it affects C++ name mangling. [Updated by Tony Luck to change efi.h:efi_freemem_callback_t to use u64 for start/end rather than unsigned long] Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | page allocator: do not check NUMA node ID when the caller knows the node is ↵Mel Gorman2009-06-161-1/+2
|/ | | | | | | | | | | | | | | | | | | | | | | valid Callers of alloc_pages_node() can optionally specify -1 as a node to mean "allocate from the current node". However, a number of the callers in fast paths know for a fact their node is valid. To avoid a comparison and branch, this patch adds alloc_pages_exact_node() that only checks the nid with VM_BUG_ON(). Callers that know their node is valid are then converted. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Paul Mundt <lethal@linux-sh.org> [for the SLOB NUMA bits] Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* smp_call_function: get rid of the unused nonatomic/retry argumentJens Axboe2008-06-261-3/+2
| | | | | | | | It's never used and the comments refer to nonatomic and retry interchangably. So get rid of it. Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [IA64] allocate multiple contiguous pages via uncached allocatorDean Nelson2008-04-291-10/+13
| | | | | | | | Enable the uncached allocator to allocate multiple pages of contiguous uncached memory. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] make flush_tlb_kernel_range() an inline functionJan Beulich2007-12-191-1/+1
| | | | | | | | | | This fixes an unused variable warning in mm/vmalloc.c. Tony: also fix resulting fallout in uncached.c with a typo in args to flush_tlb_kernel_range(). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Memoryless nodes: Uncached allocator updatesChristoph Lameter2007-10-161-2/+2
| | | | | | | | | | | | | | | | The checks for node_online in the uncached allocator are made to make sure that memory is available on these nodes. Thus switch all the checks to use N_HIGH_MEMORY and to N_ONLINE. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: Bob Picco <bob.picco@hp.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@skynet.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Define easier to handle GFP_THISNODEChristoph Lameter2006-09-261-2/+1
| | | | | | | | | In many places we will need to use the same combination of flags. Specify a single GFP_THISNODE definition for ease of use in gfp.h. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Guarantee that the uncached allocator gets pages on the correct nodeChristoph Lameter2006-09-261-1/+2
| | | | | | | | | | | | The uncached allocator manages per node pools. Specify __GFP_THISNODE in order to force allocation on the indicated node or fail. The uncached allocator has already logic to deal with failing allocations. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IA64] make uncached allocator more node awareDean Nelson2006-08-041-29/+57
| | | | | | | | | | | | The uncached allocator has a function, uncached_get_new_chunk(), that needs to be serialized on a per node basis. It also has a global variable, allocated_granules, which should be defined on a per node basis and protected by that serialization. Additionally, all error returns from functions called (like ia64_pal_mc_drain()) should be handled appropriately. Signed-off-by: Dean Nelson <dcn@sgi.com> Acked-by: Jes Sorenson <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] change gen_pool allocator to not touch managed memoryDean Nelson2006-06-231-95/+105
| | | | | | | | | | | | | | | | | | | | | | | Modify the gen_pool allocator (lib/genalloc.c) to utilize a bitmap scheme instead of the buddy scheme. The purpose of this change is to eliminate the touching of the actual memory being allocated. Since the change modifies the interface, a change to the uncached allocator (arch/ia64/kernel/uncached.c) is also required. Both Andrey Volkov and Jes Sorenson have expressed a desire that the gen_pool allocator not write to the memory being managed. See the following: http://marc.theaimsgroup.com/?l=linux-kernel&m=113518602713125&w=2 http://marc.theaimsgroup.com/?l=linux-kernel&m=113533568827916&w=2 Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Andrey Volkov <avolkov@varma-el.com> Acked-by: Jes Sorensen <jes@trained-monkey.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IA64] eliminate softlockup warningJohn Hawkes2006-01-191-0/+1
| | | | | | | | | | Fix an unnecessary softlockup watchdog warning in the ia64 uncached_build_memmap() that occurs occasionally at 256p and always at 512p. The problem occurs at boot time. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] uncached ref count leakJes Sorensen2005-12-161-3/+3
| | | | | | | | Use raw_smp_processor_id() instead of get_cpu() as we don't need the extra features of get_cpu(). Signed-off-by: Jes Sorensen <jes@trained-monkey.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] simplified efi memory map parsingTony Luck2005-09-081-11/+6
| | | | | | | | | | | | New version leaves the original memory map unmodified. Also saves any granule trimmings for use by the uncached memory allocator. Inspired by Khalid Aziz (various traces of his patch still remain). Fixes to uncached_build_memmap() and sn2 testing by Martin Hicks. Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] uncached allocator: use generic (not sn2 specific) functionsMartin Hicks2005-08-311-2/+2
| | | | | | | | | Change sn2-specific calls into generic functions. Without this change the uncached allocator will not work on non-sn2 platforms. Signed-off-by: Greg Edwards <edwardsg@sgi.com> Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] ia64 uncached allocJes Sorensen2005-06-211-0/+246
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>
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