Messages in this thread |  | | Date | Thu, 6 Feb 2014 10:42:41 -0800 | From | "Paul E. McKenney" <> | Subject | Re: [RFC][PATCH 0/5] arch: atomic rework |
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On Thu, Feb 06, 2014 at 06:25:49PM +0000, David Howells wrote: > > Is it worth considering a move towards using C11 atomics and barriers and > compiler intrinsics inside the kernel? The compiler _ought_ to be able to do > these.
Makes sense to me!
> One thing I'm not sure of, though, is how well gcc's atomics will cope with > interrupt handlers touching atomics on CPUs without suitable atomic > instructions - that said, userspace does have to deal with signals getting > underfoot. but then userspace can't normally disable interrupts.
Perhaps make the C11 definitions so that any arch can override any specific definition?
Thanx, Paul
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