From: Kent Overstreet <kmo@daterainc.com>
Date: Thu, 22 Aug 2013 01:36:45 +0000 (-0700)
Subject: bcache: Delete some slower inline asm
X-Git-Tag: v3.13-rc1~68^2~1^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=098fb25498214069e6bbf908515f2952dd7654d0;p=pandora-kernel.git

bcache: Delete some slower inline asm

Never saw a profile of bset_search_tree() where it wasn't bottlenecked
on memory until I got my new Haswell machine, but when I tried it there
it was suddenly burning 20% of the cpu in the inner loop on shrd...

Turns out, the version of shrd that takes 64 bit operands has a 9 cycle
latency. hah.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
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