Paul Jackson <[email protected]> wrote:
> The sed/perl script to make the textual change should be practical.
> Indeed, I would claim that the initial big patch -should- be done
> that way. Keep refining a sed script until manual inspection and
> trial builds of all arch's, allconfig, show that it seems to be right.
> Each time you find an error doing this, don't manually edit the
> kernel source; rather refine the script and try applying it again.
Actually, you may have a point.
If the order of patches is:
(1) Create new mutex as struct mutex/up_mutex/down_mutex, say.
(2) Make counting semaphore implementation struct semaphore/up_sem/down_sem.
(3) Convert uses of semaphores that should be completions into completions.
(4) Convert uses of semaphores that should be counting semaphores to use
up_sem/down_sem.
(5) Mass convert by script all the remaining ups and downs into up_mutex and
down_mutex.
(6) Make wrappers for up/down that map to counting semaphores with the
deprecation attribute set.
That might work, and would be a lot easier; except for the humongous patch
generated at step 5 - which could be regenerated by script. I think I can make
a simple perl script to do that.
Note that I am assuming above that down == down/down_trylock/down_interruptible
for clarity.
David
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