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[IA64-SGI] - New SN hardware support - ptc_fixes

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Shub2 provides a much improved mechanism for issuing internode
TLB purges. Add code to support the newer mechanism. There is also 
some debug code (disabled) that is useful for testing.

Collect statistics on the number, type & duration of TLB purges.
This data will be useful for making future improvements in the algorithms.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Jack Steiner
2005-08-11 10:28:00 -07:00
committed by Tony Luck
parent 68b9753f47
commit 470ceb05d9
4 changed files with 245 additions and 28 deletions
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arch/ia64/sn/kernel/setup.c
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@ -403,6 +403,7 @@ static void __init sn_init_pdas(char **cmdline_p)
memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
memset(nodepdaindr[cnode]->phys_cpuid, -1,
sizeof(nodepdaindr[cnode]->phys_cpuid));
spin_lock_init(&nodepdaindr[cnode]->ptc_lock);
}
/*