netdev - Re: [PATCH net-next v2 5/7] rhashtable: avoid unnecessary wakeup for worker queue

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Message-ID: <20150107095013.GJ21820@casper.infradead.org>
Date:	Wed, 7 Jan 2015 09:50:13 +0000
From:	Thomas Graf <tgraf@...g.ch>
To:	Ying Xue <ying.xue@...driver.com>
Cc:	davem@...emloft.net, jon.maloy@...csson.com,
	Paul.Gortmaker@...driver.com, erik.hugne@...csson.com,
	netdev@...r.kernel.org, tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net-next v2 5/7] rhashtable: avoid unnecessary wakeup for
 worker queue

On 01/07/15 at 01:41pm, Ying Xue wrote:
> Move condition statements of verifying whether hash table size exceeds
> its maximum threshold or reaches its minimum threshold from resizing
> functions to resizing decision functions, avoiding unnecessary wakeup
> for worker queue thread.
> 
> Signed-off-by: Ying Xue <ying.xue@...driver.com>
> Cc: Thomas Graf <tgraf@...g.ch>

Good optimization, thanks!

Acked-by: Thomas Graf <tgraf@...g.ch>

Can you do a follow-up patch and add a note in rhashtable.h to
indicate the implementation of the grow and shrink decision function
must enforce min/max shift?
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