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| author | Richard Henderson | 2013-02-14 02:47:40 +0100 |
|---|---|---|
| committer | Blue Swirl | 2013-02-16 12:12:29 +0100 |
| commit | 14e534265aad0796690a5aea429f5bd2877ccff0 (patch) | |
| tree | f737f58d1007171c24c9cdb696d60bbd2f7e298b /target-i386/topology.h | |
| parent | bitops: Write bitops_flsl in terms of clzl (diff) | |
| download | qemu-14e534265aad0796690a5aea429f5bd2877ccff0.tar.gz qemu-14e534265aad0796690a5aea429f5bd2877ccff0.tar.xz qemu-14e534265aad0796690a5aea429f5bd2877ccff0.zip | |
target-i386: Inline bitops_flsl
Use clz32 directly. Which makes slightly more sense given
that the input is type "int" and not type "long".
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-i386/topology.h')
| -rw-r--r-- | target-i386/topology.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/target-i386/topology.h b/target-i386/topology.h index 24ed525453..07a6c5fb55 100644 --- a/target-i386/topology.h +++ b/target-i386/topology.h @@ -52,10 +52,8 @@ typedef uint32_t apic_id_t; static unsigned apicid_bitwidth_for_count(unsigned count) { g_assert(count >= 1); - if (count == 1) { - return 0; - } - return bitops_flsl(count - 1) + 1; + count -= 1; + return count ? 32 - clz32(count) : 0; } /* Bit width of the SMT_ID (thread ID) field on the APIC ID |