From: David Miller <davem@davemloft.net>
To: bhutchings@solarflare.com
Cc: peppe.cavallaro@st.com, netdev@vger.kernel.org
Subject: Re: [net-next.git 3/8 (V2)] stmmac: add the initial tx coalesce schema
Date: Thu, 13 Sep 2012 17:37:27 -0400 (EDT) [thread overview]
Message-ID: <20120913.173727.314155374058895289.davem@davemloft.net> (raw)
In-Reply-To: <1347570650.13258.40.camel@deadeye.wl.decadent.org.uk>
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 13 Sep 2012 22:10:50 +0100
> On Thu, 2012-09-13 at 16:46 -0400, David Miller wrote:
>> From: Ben Hutchings <bhutchings@solarflare.com>
>> Date: Thu, 13 Sep 2012 21:42:51 +0100
>>
>> Well written NAPI drivers never need to disable hardware interrupts
>> in their ->poll() method and it's callers, neither should you.
>
> Perhaps you should get round to reviewing netpoll, because it does
> exactly this.
Then I don't understand the point you're trying to make.
Hardware interrupt disabling has absolutely no place in the
NAPI polling fast paths.
If NAPI drivers can't be implemented without hardware interrupt
toggling in ->poll(), we've failed.
next prev parent reply other threads:[~2012-09-13 21:37 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-11 6:55 [net-next.git 0/8 (V4)] stmmac: remove dead code for STMMAC_TIMER and add new mitigation schema Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 1/8] stmmac: remove dead code for TIMER Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 2/8 (V2)] stmmac: manage tx clean out of rx_poll Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 3/8 (V2)] stmmac: add the initial tx coalesce schema Giuseppe CAVALLARO
2012-09-13 20:23 ` David Miller
2012-09-13 20:42 ` Ben Hutchings
2012-09-13 20:46 ` David Miller
2012-09-13 21:10 ` Ben Hutchings
2012-09-13 21:37 ` David Miller [this message]
2012-09-13 23:11 ` Ben Hutchings
2012-09-14 7:36 ` Giuseppe CAVALLARO
2012-09-18 5:41 ` Giuseppe CAVALLARO
2012-10-04 10:06 ` Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 4/8 (V3)] stmmac: add Rx watchdog support to mitigate the DMA irqs Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 5/8 (V2)] stmmac: get/set coalesce parameters via ethtool Giuseppe CAVALLARO
2012-09-11 18:14 ` Ben Hutchings
2012-09-11 6:55 ` [net-next.git 6/8] stmmac: fix and review the rx irq path after adding new mitigation Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 7/8] stmmac: update the doc with new IRQ mitigation Giuseppe CAVALLARO
2012-09-11 6:55 ` [net-next.git 8/8] stmmac: update the driver version to Sept_2012 Giuseppe CAVALLARO
-- strict thread matches above, loose matches on Subject: below --
2012-09-10 7:38 [net-next.git 0/8 (V3)] stmmac: remove dead code for STMMAC_TIMER and add new mitigation schema Giuseppe CAVALLARO
2012-09-10 7:38 ` [net-next.git 3/8 (V2)] stmmac: add the initial tx coalesce schema Giuseppe CAVALLARO
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