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From: "David S. Miller" <davem@davemloft.net>
To: paulmck@us.ibm.com
Cc: dada1@cosmosbay.com, alan@lxorguk.ukuu.org.uk, torvalds@osdl.org,
	linux-kernel@vger.kernel.org, dipankar@in.ibm.com,
	manfred@colorfullife.com, netdev@vger.kernel.org
Subject: Re: [PATCH, RFC] RCU : OOM avoidance and lower latency
Date: Fri, 06 Jan 2006 12:33:32 -0800 (PST)	[thread overview]
Message-ID: <20060106.123332.109879608.davem@davemloft.net> (raw)
In-Reply-To: <20060106202626.GA5677@us.ibm.com>

From: "Paul E. McKenney" <paulmck@us.ibm.com>
Date: Fri, 6 Jan 2006 12:26:26 -0800

> If not, it may be worthwhile to limit the number of times that
> rt_run_flush() runs per RCU grace period.

This is mixing two sets of requirements.

rt_run_flush() runs periodically in order to regenerate the hash
function secret key.  Now, for that specific case it might actually be
possible to rehash instead of flush, but the locking is a little bit
tricky :-)  And also, I think we're regenerating the secret key
just a little bit too often, I think we'd get enough security
with a less frequent regeneration.

I'll look into this and your other ideas later today hopefully.

  reply	other threads:[~2006-01-06 20:34 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20060105235845.967478000@sorel.sous-sol.org>
2006-01-05 21:47 ` [PATCH 0/6] -stable review Chris Wright
2006-01-06  0:45   ` [PATCH 1/6] drivers/net/sungem.c: gem_remove_one mustnt be __devexit Chris Wright
2006-01-06  0:45   ` [PATCH 2/6] ieee80211_crypt_tkip depends on NET_RADIO Chris Wright
2006-01-06  0:45   ` [PATCH 3/6] Insanity avoidance in /proc (CVE-2005-4605) Chris Wright
2006-01-06  0:45   ` [PATCH 4/6] sysctl: dont overflow the user-supplied buffer with 0 Chris Wright
2006-01-06  1:30     ` Linus Torvalds
2006-01-06  3:40       ` Chris Wright
2006-01-06 10:17       ` [PATCH, RFC] RCU : OOM avoidance and lower latency Eric Dumazet
2006-01-06 12:52         ` [PATCH, RFC] RCU : OOM avoidance and lower latency (Version 2), HOTPLUG_CPU fix Eric Dumazet
2006-01-06 12:58         ` [PATCH, RFC] RCU : OOM avoidance and lower latency Andi Kleen
2006-01-06 13:09           ` Eric Dumazet
2006-01-06 19:26           ` Lee Revell
2006-01-06 22:18             ` Andi Kleen
2006-01-06 13:37         ` Alan Cox
2006-01-06 14:00           ` Eric Dumazet
2006-01-06 14:45             ` Alan Cox
2006-01-06 16:47           ` Paul E. McKenney
2006-01-06 17:19             ` Eric Dumazet
2006-01-06 20:26               ` Paul E. McKenney
2006-01-06 20:33                 ` David S. Miller [this message]
2006-01-06 20:57                 ` Andi Kleen
2006-01-07  0:17                   ` David S. Miller
2006-01-07  1:09                     ` Andi Kleen
2006-01-07  7:10                       ` David S. Miller
2006-01-07  7:34                       ` Eric Dumazet
2006-01-07  7:44                         ` David S. Miller
2006-01-07  7:53                           ` Eric Dumazet
2006-01-07  8:36                             ` David S. Miller
2006-01-07 20:30                               ` Paul E. McKenney
2006-01-07  8:30                     ` Eric Dumazet
2006-01-06 19:24         ` Lee Revell
2006-01-06  0:46   ` [PATCH 5/6] UFS: inode->i_sem is not released in error path Chris Wright
2006-01-06  0:46   ` [PATCH 6/6] [ATYFB]: Fix onboard video on SPARC Blade 100 for 2.6.{13,14,15} Chris Wright
2006-01-06  0:53   ` [PATCH 0/6] -stable review Chris Wright

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