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Re: [PATCH 0/2] Ajust lockdep static allocations

From Babu Moger <babu.moger@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH 0/2] Ajust lockdep static allocations
Date 2016-09-23 17:20 +0200
Message-ID <skAqB-5wp-17@gated-at.bofh.it> (permalink)
References (1 earlier) <sksW6-Dp-13@gated-at.bofh.it> <skzkS-4Ew-13@gated-at.bofh.it> <skzNT-4QO-31@gated-at.bofh.it> <skA7g-5af-11@gated-at.bofh.it> <skAgW-5sZ-43@gated-at.bofh.it>
Organization Oracle Corporation

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On 9/23/2016 10:04 AM, Peter Zijlstra wrote:
> On Fri, Sep 23, 2016 at 09:50:52AM -0500, Babu Moger wrote:
>>> Why can't you boot? You have that little memories? 4MB doesn't seem like
>>> a worthwhile amount of memory.
>>>
>>> Also, you didn't say.  This seems a somewhat crucial point.
>>      Correct, We can't boot with lockdep. Sorry I did not make that clear.
>> We have a limit on static size of the kernel.
> This stuff should be in .bss not .data. It should not affect the static
> size at all. Or am I misunderstanding things?
  Here it is.
$ ./scripts/bloat-o-meter vmlinux.lockdep.small vmlinux.lockdep.big
add/remove: 0/0 grow/shrink: 5/0 up/down: 4653056/0 (4653056)
function                                     old     new   delta
stack_trace                              2097152 4194304 +2097152
lock_chains                              1048576 2097152 +1048576
list_entries                             1048576 2097152 +1048576
chain_hlocks                              327680  655360 +327680
chainhash_table                           131072  262144 +131072
Total: Before=21046200, After=25699256, chg 22.000000%

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[PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-22 20:50 +0200
  [PATCH 1/2] lockdep: Keep the default static allocations small Babu Moger <babu.moger@oracle.com> - 2016-09-22 20:50 +0200
  Re: [PATCH 0/2] Ajust lockdep static allocations Peter Zijlstra <peterz@infradead.org> - 2016-09-23 09:20 +0200
    Re: [PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-23 16:10 +0200
      Re: [PATCH 0/2] Ajust lockdep static allocations Peter Zijlstra <peterz@infradead.org> - 2016-09-23 16:40 +0200
        Re: [PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-23 17:00 +0200
          Re: [PATCH 0/2] Ajust lockdep static allocations Peter Zijlstra <peterz@infradead.org> - 2016-09-23 17:10 +0200
            Re: [PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-23 17:20 +0200
              Re: [PATCH 0/2] Ajust lockdep static allocations Peter Zijlstra <peterz@infradead.org> - 2016-09-23 17:50 +0200
                Re: [PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-23 22:00 +0200
                Re: [PATCH 0/2] Ajust lockdep static allocations Rob Gardner <rob.gardner@oracle.com> - 2016-09-23 22:10 +0200
                Re: [PATCH 0/2] Ajust lockdep static allocations Peter Zijlstra <peterz@infradead.org> - 2016-09-23 22:20 +0200
                Re: [PATCH 0/2] Ajust lockdep static allocations Babu Moger <babu.moger@oracle.com> - 2016-09-23 22:40 +0200

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