>However, the C-code hack to force reordering is incorrect. It ties
jiffies is volatile so the increment won't be reordered.
And the only reason we make jiffies volatile is for the readers and _not_
for the only writer (do_timer) we are discussing about. In do_timer
there's no problem if the compiler reoder or cache jiffies in regs for
some time.
Andrea
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