Message-ID: <1440809991.8932.97.camel@edumazet-glaptop2.roam.corp.google.com>
Subject: Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by
 walking all the percpu data at once
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>, raghavendra.kt@linux.vnet.ibm.com,
        edumazet@google.com, kuznet@ms2.inr.ac.ru, jmorris@namei.org,
        yoshfuji@linux-ipv6.org, kaber@trash.net, jiri@resnulli.us,
        hannes@stressinduktion.org, tom@herbertland.com, azhou@nicira.com,
        ebiederm@xmission.com, ipm@chirality.org.uk, nicolas.dichtel@6wind.com,
        serge.hallyn@canonical.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, anton@au1.ibm.com,
        nacc@linux.vnet.ibm.com, srikar@linux.vnet.ibm.com
Date: Fri, 28 Aug 2015 17:59:51 -0700
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On Fri, 2015-08-28 at 17:35 -0700, Joe Perches wrote:

> That of course depends on what a "leaf" is and
> whether or not any other function call in the
> "leaf" consumes stack.
> 
> inet6_fill_ifla6_attrs does call other functions
> (none of which has the stack frame size of k.alloc)

Just define/use this automatic array in the damn leaf function.

That should not be hard, and maybe no one will complain and we can
work on more complex issues.


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