x86, UV: Calculate BAU destination timeout

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Calculate the Broadcast Assist Unit's destination timeout period from the
values in the relevant MMR's.

Store it in each cpu's per-cpu BAU structure so that a destination
timeout can be differentiated from a 'plugged' situation in which all
software ack resources are already allocated and a timeout is pending.
That case returns an immediate destination error.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: gregkh@suse.de
LKML-Reference: <E1OJvNx-0004Zq-RK@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Cliff Wickman 2010-06-02 16:22:01 -05:00 • committed by Ingo Molnar

parent 3975d16760

commit 12a6611fa1

2 changed files with 59 additions and 4 deletions

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12

arch/x86/include/asm/uv/uv_bau.h

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51

arch/x86/kernel/tlb_uv.c

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