Messages in this thread | | | Subject | Re: [RT] lockdep munching nr_list_entries like popcorn | From | Mike Galbraith <> | Date | Thu, 16 Feb 2017 19:06:20 +0100 |
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On Thu, 2017-02-16 at 15:53 +0100, Sebastian Andrzej Siewior wrote: > On 2017-02-16 15:42:59 [+0100], Mike Galbraith wrote: > > > > Weeell, I'm trying to cobble something kinda like that together using > > __RT_SPIN_INITIALIZER() instead, but seems mean ole Mr. Compiler NAKs > > the PER_CPU_DEP_MAP_INIT() thingy. > > > > CC mm/swap.o > > mm/swap.c:54:689: error: braced-group within expression allowed only > > inside a function > > so this is what I have now. I need to get the `static' symbol working > again and PER_CPU_DEP_MAP_INIT but aside from that it seems to do its > job.
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Yeah, works, I should be able to do an ltp run with stock lockdep settings without it taking it's toys and going home in a snit.
berio:/sys/kernel/debug/tracing/:[0]# !while while sleep 60; do tail -1 trace; done <...>-10315 [064] d...1.. 226.953935: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 14223 w-13148 [120] d...111 287.414978: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 14465 w-16492 [089] d...111 347.128742: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 14653 (starts kbuild loop) btrfs-transacti-1964 [016] d...1.. 411.101549: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 17011 <...>-100268 [127] d...112 472.271769: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 18153 w-18864 [011] d...1.. 534.386443: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 18543 <...>-50390 [035] dN..2.. 597.794164: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 18765 <...>-80098 [127] d...111 659.912145: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 18977 checkproc-11123 [017] d...1.. 721.483463: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 19247 <idle>-0 [055] d..h5.. 782.685953: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 19383 <...>-93632 [055] d...111 835.527817: add_lock_to_list.isra.24.constprop.42: nr_list_entries: 19441
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