Messages in this thread | | | Date | Tue, 25 Jun 2013 15:25:50 +0800 | From | Chen Gang <> | Subject | Re: [Suggestion] arch: s390: mm: the warnings with allmodconfig and "EXTRA_CFLAGS=-W" |
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On 06/25/2013 02:50 PM, Martin Schwidefsky wrote: > On Tue, 25 Jun 2013 09:54:41 +0800 > Chen Gang <gang.chen@asianux.com> wrote: > >> > Hello Maintainers: >> > >> > When allmodconfig for " IBM zSeries model z800 and z900" >> > >> > It will report the related warnings ("EXTRA_CFLAGS=-W"): >> > mm/slub.c:1875:1: warning: ‘deactivate_slab’ uses dynamic stack allocation [enabled by default] >> > mm/slub.c:1941:1: warning: ‘unfreeze_partials.isra.32’ uses dynamic stack allocation [enabled by default] >> > mm/slub.c:2575:1: warning: ‘__slab_free’ uses dynamic stack allocation [enabled by default] >> > mm/slub.c:1582:1: warning: ‘get_partial_node.isra.34’ uses dynamic stack allocation [enabled by default] >> > mm/slub.c:2311:1: warning: ‘__slab_alloc.constprop.42’ uses dynamic stack allocation [enabled by default] >> > >> > Is it OK ? > Yes, these warnings should be ok. They are enabled by CONFIG_WARN_DYNAMIC_STACK, > the purpose is to find all functions with dynamic stack allocations. The check > if the allocations are truly ok needs to be done manually as the compiler > can not find out the maximum allocation size automatically.
Thank you very much for your details information.
-- Chen Gang
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