Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 15 Dec 2023 18:36:23 +0200 | From | Andy Shevchenko <> | Subject | Re: [PATCH v3 3/5] gpiolib: cdev: reduce locking in gpio_desc_to_lineinfo() |
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On Fri, Dec 15, 2023 at 10:38:03AM +0800, Kent Gibson wrote: > Reduce the time holding the gpio_lock by snapshotting the desc flags, > rather than testing them individually while holding the lock. > > Accept that the calculation of the used field is inherently racy, and > only check the availability of the line from pinctrl if other checks > pass, so avoiding the check for lines that are otherwise in use.
Just wondering if you are using --histogram (diff algo) when preparing the patches...
-- With Best Regards, Andy Shevchenko
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