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x86/mm/mtrr: Slightly simplify print_mtrr_state()

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high_width can be easily calculated in a single expression when
making use of __ffs64().

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/4FF71053020000780008E1B5@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Jan Beulich 2012-07-06 15:20:35 +01:00 committed by Ingo Molnar
parent 1ba9a29414
commit a7101d1526
1 changed files with 1 additions and 5 deletions
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6
arch/x86/kernel/cpu/mtrr/generic.c
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@ -361,11 +361,7 @@ static void __init print_mtrr_state(void)
}
pr_debug("MTRR variable ranges %sabled:\n",
mtrr_state.enabled & 2 ? "en" : "dis");
if (size_or_mask & 0xffffffffUL)
high_width = ffs(size_or_mask & 0xffffffffUL) - 1;
else
high_width = ffs(size_or_mask>>32) + 32 - 1;
high_width = (high_width - (32 - PAGE_SHIFT) + 3) / 4;
high_width = (__ffs64(size_or_mask) - (32 - PAGE_SHIFT) + 3) / 4;
for (i = 0; i < num_var_ranges; ++i) {
if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))