On Wed, Nov 11, 2015 at 12:35:48PM -0500, David Miller wrote: > From: Alexei Starovoitov <alexei.starovoi...@gmail.com> > Date: Wed, 11 Nov 2015 09:27:00 -0800 > > > BPF_XADD == atomic_add() in kernel. period. > > we are not going to deprecate it or introduce something else. > > Agreed, it makes no sense to try and tie C99 or whatever atomic > semantics to something that is already clearly defined to have > exactly kernel atomic_add() semantics.
... and which is emitted by LLVM when asked to compile __sync_fetch_and_add, which has clearly defined (yet conflicting) semantics. If the discrepancy is in LLVM (and it sounds like it is), then I'll raise a bug over there instead. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
