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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>
Newsgroups linux.kernel
Subject Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by walking all the percpu data at once
Date 2015-08-29 03:10 +0200
Message-ID <q2COC-3lr-7@gated-at.bofh.it> (permalink)
References (10 earlier) <q2znJ-6NW-23@gated-at.bofh.it> <q2AjL-89a-5@gated-at.bofh.it> <q2B6a-Rf-11@gated-at.bofh.it> <q2BSx-20S-5@gated-at.bofh.it> <q2Clz-2yD-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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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[PATCH RFC V2 0/2]  Optimize the snmp stat aggregation for large cpus  Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-26 19:50 +0200
  [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by walking all the percpu data at once Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-26 19:50 +0200
    Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once David Miller <davem@davemloft.net> - 2015-08-27 20:40 +0200
      Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by walking  all the percpu data at once Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-28 08:40 +0200
        Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once David Miller <davem@davemloft.net> - 2015-08-28 20:30 +0200
          Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-28 21:30 +0200
            Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-28 22:40 +0200
              Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-28 23:00 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-28 23:10 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-28 23:20 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-28 23:30 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-29 00:30 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-29 01:20 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-29 02:10 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-29 02:40 +0200
                Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-29 03:10 +0200
              Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Joe Perches <joe@perches.com> - 2015-08-28 23:00 +0200
          Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-29 05:00 +0200
            Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once Eric Dumazet <eric.dumazet@gmail.com> - 2015-08-29 05:30 +0200
              Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by walking  all the percpu data at once Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-29 10:00 +0200
            Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by  walking all the percpu data at once David Miller <davem@davemloft.net> - 2015-08-29 07:20 +0200
              Re: [PATCH RFC V2 2/2] net: Optimize snmp stat aggregation by walking  all the percpu data at once Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-08-29 10:00 +0200

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