Messages in this thread | | | Date | Thu, 14 May 2015 17:12:06 +1000 | From | Stephen Rothwell <> | Subject | linux-next: build warnings after merge of the net-next tree |
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Hi all,
After merging the net-next tree, today's linux-next build (sparc64 defconfig) produced these warnings:
In file included from arch/sparc/include/asm/cmpxchg.h:4:0, from arch/sparc/include/asm/atomic_64.h:11, from arch/sparc/include/asm/atomic.h:4, from include/linux/atomic.h:4, from include/linux/spinlock.h:416, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/mm.h:9, from net/packet/af_packet.c:56: net/packet/af_packet.c: In function 'packet_rcv_has_room': arch/sparc/include/asm/cmpxchg_64.h:43:22: warning: value computed is not used [-Wunused-value] #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) ^ net/packet/af_packet.c:1314:3: note: in expansion of macro 'xchg' xchg(&po->pressure, !has_room); ^ net/packet/af_packet.c: In function 'packet_poll': arch/sparc/include/asm/cmpxchg_64.h:43:22: warning: value computed is not used [-Wunused-value] #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) ^ net/packet/af_packet.c:3817:3: note: in expansion of macro 'xchg' xchg(&po->pressure, 0); ^
Introduced by commit 2ccdbaa6d55b ("packet: rollover lock contention avoidance").
-- Cheers, Stephen Rothwell sfr@canb.auug.org.au [unhandled content-type:application/pgp-signature] | |