x86, UV: BAU tunables into a debugfs file

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Make the Broadcast Assist Unit driver's nine tuning values variable by
making them accessible through a read/write debugfs file.

The file will normally be mounted as
/sys/kernel/debug/sgi_uv/bau_tunables. The tunables are kept in each
cpu's per-cpu BAU structure.

The patch also does a little name improvement, and corrects the reset of
two destination timeout counters.

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

...

This commit is contained in:

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

parent 12a6611fa1

commit e8e5e8a804

2 changed files with 278 additions and 56 deletions

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55

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

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285

arch/x86/kernel/tlb_uv.c

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