atomic: add atomic_interrupt_fence()

[kib]

Summary

with the semantic following C11 signal_fence, that is, it establishes ordering between its place and any interrupt handler executing on the same CPU.

[markj]

Thanks.

[rlibby]

share/man/man9/atomic.9

34

Comma?

298–305

Apologies in advance for nitpicking grammar, but since this is the man page (which by the way is excellent overall):

Interrupt Fence Operation

I think should be plural, like Thread Fence Operations is.

It is modelled after similar C11 function
.Fn atomic_signal_fence() ,
adapted for the kernel environment.

Suggestions:

It is modelled after the similar C11 function
.Fn atomic_signal_fence() ,
and adapted for the kernel environment.

Additionally my spell check wants "modelled" to have one L, but I think this is a regional thing and I'm not sure if we're consistent about that.

[kib]

Man page fixes.