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| author | Kent Overstreet <kmo@daterainc.com> | 2013-08-22 03:36:45 +0200 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-11 06:56:42 +0100 |
| commit | 098fb25498214069e6bbf908515f2952dd7654d0 (patch) | |
| tree | f170596e7abb95f78a6b89044945aaea81919214 /drivers/md/bcache/debug.c | |
| parent | bcache: Use ida for bcache block dev minor (diff) | |
| download | linux-098fb25498214069e6bbf908515f2952dd7654d0.tar.xz linux-098fb25498214069e6bbf908515f2952dd7654d0.zip | |
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>
Diffstat (limited to 'drivers/md/bcache/debug.c')
0 files changed, 0 insertions, 0 deletions