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[IA64] New IA64 core/thread detection patch

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IPF SDM 2.2 changes definition of PAL_LOGICAL_TO_PHYSICAL to add
proc_number=-1 to get core/thread mapping info on the running processer.

Based on this change, we had better to update existing core/thread
detection in IA64 kernel correspondingly. The attached patch implements
this change. It simplifies detection code and eliminates potential race
condition. It also runs a bit faster and has better scalability especially
when cores and threads number grows up in one package.

Signed-off-by: Fenghua Yu <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
This commit is contained in:
Fenghua Yu 2006-02-27 16:16:22 -08:00 • committed by Tony Luck
commit 4129a953ad
2 changed files with 5 additions and 107 deletions
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3
include/asm-ia64/pal.h
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@ -1640,8 +1640,7 @@ ia64_pal_logical_to_phys(u64 proc_number, pal_logical_to_physical_t *mapping)
if (iprv.status == PAL_STATUS_SUCCESS)
{
if (proc_number == 0)
mapping->overview.overview_data = iprv.v0;
mapping->overview.overview_data = iprv.v0;
mapping->ppli1.ppli1_data = iprv.v1;
mapping->ppli2.ppli2_data = iprv.v2;
}