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path: root/drivers/misc/sgi-xp/xpc_uv.c
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2009-10-14x86: SGI UV: Fix irq affinity for hub based interruptsDimitri Sivanich1-2/+3
This patch fixes handling of uv hub irq affinity. IRQs with ALL or NODE affinity can be routed to cpus other than their originally assigned cpu. Those with CPU affinity cannot be rerouted. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20090930160259.GA7822@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17page allocator: do not check NUMA node ID when the caller knows the node is ↵Mel Gorman1-1/+1
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>
2009-04-14sgi-xpc: clean up numerous globalsRobin Holt1-59/+63
Introduce xpc_arch_ops and eliminate numerous individual global definitions. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-14sgi-xpc: implement opencomplete messagingRobin Holt1-0/+22
sgi-xpc has a window of failure where an open message can be sent and a subsequent data message can get lost. We have added a new message (opencomplete) which closes that window. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-14sgi-xpc: prevent false heartbeat failuresRobin Holt1-80/+43
The heartbeat timeout functionality in sgi-xpc is currently not trained to the connection time. If a connection is made and the code is in the last polling window prior to doing a timeout, the next polling window will see the heartbeat as unchanged and initiate a no-heartbeat disconnect. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-03sgi-gru: add support to the GRU driver for message queue interruptsJack Steiner1-48/+181
Add support to the GRU driver for message queue interrupts. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-05sgi-xp: fix writing past the end of kzalloc()'d spaceDean Nelson1-6/+5
A missing type cast results in writing way beyond the end of a kzalloc()'d memory segment resulting in slab corruption. But it seems like the better solution is to define ->recv_msg_slots as a 'void *' rather than a 'struct xpc_notify_mq_msg_uv *' and add the type cast. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30sgi-xpc: ensure flags are updated before bte_copyRobin Holt1-1/+1
The clearing of the msg->flags needs a barrier between it and the notify of the channel threads that the messages are cleaned and ready for use. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-17sgi-xp: xpc needs to pass the physical address, not virtualRuss Anderson1-4/+4
Impact: fix crash xpc needs to pass the physical address, not virtual. Testing uncovered this problem. The virtual address happens to work most of the time due to the way bios was masking off the node bits. Passing the physical address makes it work all of the time. Signed-off-by: Russ Anderson <rja@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-06sgi-xp: support getting the address of a partition's reserved pageDean Nelson1-3/+28
Add support for getting the address of a partition's reserved page. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-11-06sgi-xp: create activate and notify gru message queuesDean Nelson1-53/+206
For UV add the code to create the activate and notify gru message queues. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-30sgi-xp: setup the notify GRU message queueDean Nelson1-188/+763
Setup the notify GRU message queue that is used for sending user messages on UV systems. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: setup the activate GRU message queueDean Nelson1-30/+751
Setup the activate GRU message queue that is used for partition activation and channel connection on UV systems. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: add usage of GRU driver by xpc_remote_memcpy()Dean Nelson1-1/+1
Add UV support to xpc_remote_memcpy(), which involves interfacing to the GRU driver. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: enable building of XPC/XPNET on x86_64Dean Nelson1-5/+2
Get XPC/XPNET to build on x86_64. Trying to modprobe them up on a non-UV or sn2 system will result in a -ENODEV. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: eliminate '>>>' in commentsDean Nelson1-16/+16
Comments in /drivers/misc/sgi-xp has been using '>>>' as a means to draw attention to something that needs to be done or considered. To avoid colliding with git rejects, '>>>' will now be replaced by '!!!' to indicate something to do, and by '???' to indicate something to be considered. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: separate chctl_flags from XPC's notify IRQDean Nelson1-5/+5
Tie current IPI references to either XPC's notify IRQ or channel control flags. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate additional sn2 specific codeDean Nelson1-4/+11
Move additional sn2 specific code into xpc_sn2.c. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate xpc_vars structure to sn2 onlyDean Nelson1-5/+52
Isolate the xpc_vars structure of XPC's reserved page to sn2 only. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: isolate xpc_vars_part structure to sn2 onlyDean Nelson1-0/+48
Isolate the xpc_vars_part structure of XPC's reserved page to sn2 only. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30sgi-xp: prepare xpc_rsvd_page to work on either sn2 or uv hardwareDean Nelson1-0/+48
Prepare XPC's reserved page header to work for either sn2 or uv. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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