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arch/tile: remove bogus performance optimization

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We were re-homing the initial task's kernel stack on the boot cpu,
but in fact it's better to let it stay globally homed, since that
task isn't bound to the boot cpu anyway.  This is more of a general
cleanup than an actual performance optimization, but it removes
code, which is a good thing. :-)

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2012-03-30 16:27:20 -04:00
parent cdd8e16feb
commit b1760c847f
1 changed files with 0 additions and 5 deletions
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5
arch/tile/mm/init.c
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@ -254,11 +254,6 @@ static pgprot_t __init init_pgprot(ulong address)
return construct_pgprot(PAGE_KERNEL_RO, PAGE_HOME_IMMUTABLE);
}
/* As a performance optimization, keep the boot init stack here. */
if (address >= (ulong)&init_thread_union &&
address < (ulong)&init_thread_union + THREAD_SIZE)
return construct_pgprot(PAGE_KERNEL, smp_processor_id());
#ifndef __tilegx__
#if !ATOMIC_LOCKS_FOUND_VIA_TABLE()
/* Force the atomic_locks[] array page to be hash-for-home. */