Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [PATCH] mm: cleanup swap unused warning | Date | Wed, 10 May 2006 21:56:07 +1000 |
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On Wednesday 10 May 2006 21:46, Con Kolivas wrote: > On Wednesday 10 May 2006 21:38, Andrew Morton wrote: > > We have __attribute_used__, which hides a gcc oddity. > > I tried that. > > In file included from arch/i386/mm/pgtable.c:11: > include/linux/swap.h:82: warning: ‘__used__’ attribute ignored > In file included from include/linux/suspend.h:8, > from init/do_mounts.c:7: > include/linux/swap.h:82: warning: ‘__used__’ attribute ignored > In file included from arch/i386/mm/init.c:22: > include/linux/swap.h:82: warning: ‘__used__’ attribute ignored > AS arch/i386/kernel/vsyscall-sysenter.o > > etc.. > > and doesn't fix the warning in vmscan.c. __attribute_used__ is handled > differently by gcc4 it seems (this is 4.1.0)
in compiler-gcc3.h #if __GNUC_MINOR__ >= 3 # define __attribute_used__ __attribute__((__used__)) #else # define __attribute_used__ __attribute__((__unused__)) #endif
and in compiler-gcc4.h #define __attribute_used__ __attribute__((__used__))
it looks like the pre gcc3.3 version is suited here or I'm misusing the __attribute_used__ extension somehow.
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