From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: [PATCH 0/2] zs_object_copy() micro-optimizations
Date: Wed, 25 Mar 2015 00:24:45 +0900 [thread overview]
Message-ID: <1427210687-6634-1-git-send-email-sergey.senozhatsky@gmail.com> (raw)
Hello,
two small patches two micro-optimize zs_object_copy().
The first one removes unneeded kunmap_atomic/kmap_atomic of dst page,
when object that we copy belongs to two source pages.
The seconds one is also trivial -- removes branching and (a bit)
reduses the amount of work done by the function (double offsets
calculations).
Sergey Senozhatsky (2):
zsmalloc: do not remap dst page while prepare next src page
zsmalloc: micro-optimize zs_object_copy()
mm/zsmalloc.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
--
2.3.4
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next reply other threads:[~2015-03-24 15:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 15:24 Sergey Senozhatsky [this message]
2015-03-24 15:24 ` [PATCH 1/2] zsmalloc: do not remap dst page while prepare next src page Sergey Senozhatsky
2015-03-25 5:05 ` Heesub Shin
2015-03-25 5:29 ` Sergey Senozhatsky
2015-03-24 15:24 ` [PATCH 2/2] zsmalloc: micro-optimize zs_object_copy() Sergey Senozhatsky
2015-03-25 15:07 ` Minchan Kim
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