linux-kernel - Re: [PATCH v2 0/4] improve fault-tolerance of rhashtable runtime-test

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Message-Id: <20151123.123821.1971816203199981831.davem@davemloft.net>
Date:	Mon, 23 Nov 2015 12:38:21 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	phil@....cc
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	tgraf@...g.ch, fengguang.wu@...el.com, wfg@...ux.intel.com,
	lkp@...org
Subject: Re: [PATCH v2 0/4] improve fault-tolerance of rhashtable
 runtime-test

From: Phil Sutter <phil@....cc>
Date: Fri, 20 Nov 2015 18:17:16 +0100

> The following series aims to improve lib/test_rhashtable in different
> situations:
> 
> Patch 1 allows the kernel to reschedule so the test does not block too
>         long on slow systems.
> Patch 2 fixes behaviour under pressure, retrying inserts in non-permanent
>         error case (-EBUSY).
> Patch 3 auto-adjusts the upper table size limit according to the number
>         of threads (in concurrency test). In fact, the current default is
> 	already too small.
> Patch 4 makes it possible to retry inserts even in supposedly permanent
>         error case (-ENOMEM) to expose rhashtable's remaining problem of
> 	-ENOMEM being not as permanent as it is expected to be.
> 
> Changes since v1:
> - Introduce insert_retry() which is then used in single-threaded test as
>   well.
> - Do not retry inserts by default if -ENOMEM was returned.
> - Rename the retry counter to be a bit more verbose about what it
>   contains.
> - Add patch 4 as a debugging aid.

Series applied, thanks Phil.
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