From: Thomas Graf <tgraf@suug.ch>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, fengguang.wu@intel.com,
wfg@linux.intel.com, lkp@01.org
Subject: Re: [PATCH 2/3] rhashtable-test: retry insert operations in threads
Date: Wed, 2 Sep 2015 09:07:24 +0200 [thread overview]
Message-ID: <20150902070724.GD11564@pox.localdomain> (raw)
In-Reply-To: <20150902020025.GA18184@gondor.apana.org.au>
On 09/02/15 at 10:00am, Herbert Xu wrote:
> On Tue, Sep 01, 2015 at 04:51:24PM +0200, Thomas Graf wrote:
> >
> > 1. The current in-kernel self-test
> > 2. bind_netlink.c: https://github.com/tgraf/rhashtable
>
> Thanks, I will try to reproduce this.
The path in question is:
int rhashtable_insert_rehash(struct rhashtable *ht)
{
[...]
old_tbl = rht_dereference_rcu(ht->tbl, ht);
tbl = rhashtable_last_table(ht, old_tbl);
size = tbl->size;
if (rht_grow_above_75(ht, tbl))
size *= 2;
/* Do not schedule more than one rehash */
else if (old_tbl != tbl)
return -EBUSY;
The behaviour in question is the immediate rehash during
insertion which we want to fail.
Commits:
ccd57b1bd32460d27bbb9c599e795628a3c66983
a87b9ebf1709687ff213091d0fdb4254b1564803
next prev parent reply other threads:[~2015-09-02 7:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-28 10:28 [PATCH 1/3] rhashtable-test: add cond_resched() to thread test Phil Sutter
2015-08-28 10:28 ` [PATCH 2/3] rhashtable-test: retry insert operations in threads Phil Sutter
2015-08-28 11:09 ` Thomas Graf
2015-08-28 11:13 ` Phil Sutter
2015-08-28 13:34 ` Phil Sutter
2015-08-28 22:43 ` Thomas Graf
2015-08-29 9:07 ` Phil Sutter
2015-08-30 7:47 ` Herbert Xu
2015-08-31 11:00 ` Phil Sutter
2015-09-01 11:43 ` Herbert Xu
2015-09-01 12:46 ` Phil Sutter
2015-09-01 13:00 ` Herbert Xu
2015-09-01 13:40 ` Eric Dumazet
2015-09-01 13:43 ` Phil Sutter
2015-09-01 13:50 ` Herbert Xu
2015-09-01 13:56 ` Phil Sutter
2015-09-01 14:03 ` Herbert Xu
2015-09-01 14:13 ` Thomas Graf
2015-09-01 14:16 ` Herbert Xu
2015-09-01 14:51 ` Thomas Graf
2015-09-02 2:00 ` Herbert Xu
2015-09-02 7:07 ` Thomas Graf [this message]
2015-09-10 8:03 ` Herbert Xu
2015-09-10 10:05 ` Phil Sutter
2015-08-28 10:28 ` [PATCH 3/3] rhashtable-test: calculate max_entries value by default Phil Sutter
2015-08-28 11:11 ` Thomas Graf
2015-08-28 11:03 ` [PATCH 1/3] rhashtable-test: add cond_resched() to thread test Thomas Graf
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