Re: [Lhms-devel] [RFC] buddy allocator without bitmap [2/4]

Okay, I'll do more test and if I find atomic ops are slow,
I'll add __XXXPagePrivate() macros.

ps. I usually test codes on Xeon 1.8G x 2 server.

-- Kame

Andrew Morton wrote:

Hiroyuki KAMEZAWA [off-list ref] wrote:

quoted

In the previous version, I used SetPagePrivate()/ClearPagePrivate()/PagePrivate().
But these are "atomic" operation and looks very slow.
This is why I doesn't used these macros in this version.

My previous version, which used set_bit/test_bit/clear_bit, shows very bad performance
on my test, and I replaced it.

That's surprising.  But if you do intend to use non-atomic bitops then
please add __SetPagePrivate() and __ClearPagePrivate()

-- 
--the clue is these footmarks leading to the door.--
KAMEZAWA Hiroyuki [off-list ref]

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