diff options
| author | Jan Beulich <JBeulich@suse.com> | 2012-07-06 15:20:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-07-10 10:38:15 +0200 |
| commit | a7101d152665817bf7cafc47e7f5dcb1f54664fe (patch) | |
| tree | 8f3adbfb986497700f140387365ce31eff89ada4 | |
| parent | 1ba9a294141b106b7247649a5c3372d8284eca80 (diff) | |
x86/mm/mtrr: Slightly simplify print_mtrr_state()
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>
| -rw-r--r-- | arch/x86/kernel/cpu/mtrr/generic.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index 75772ae6c65..e9fe907cd24 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -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)) |