> FYI the TM spec can be downloaded here: > https://www.power.org/documentation/power-isa-transactional-memory/ > > You're example code looks like this:
I don't think portable code will use this directly. Note it's in arch/x86/ Generally portable code should use higher level interfaces, like elide_lock/elide_lock_adapt that hide the architecture specific details. If you want to do lock elision you would plug in some elision algorithm that works well at that level. > Secondly, can we make xbegin just return true/false and get the status > later if needed? I now removed xbegin() from the portable file, as it's only used in arch specific code. And FWIW I'm considering to change it to save a few instructions and go for the more efficient goto based interface in glibc. > > ppc = tcheck... should be fine, other than the name. Well x and tm doesn't really matter, but I already have x* so i'm inclined to keep it, unless people bikeshed too strongly. It should work for PPC too. BTW if the percpu include loop hell is ever sorted out _xtest may even stop using XTEST. -Andi -- a...@linux.intel.com -- Speaking for myself only -- 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/
