Messages in this thread | | | From | Ramon Fried <> | Date | Wed, 13 Apr 2022 10:40:09 +0300 | Subject | Re: [PATCH] uio: make MAX_UIO_MAPS & MAX_UIO_PORT_REGIONS configurable |
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On Wed, Apr 13, 2022 at 10:28 AM Greg KH <gregkh@linuxfoundation.org> wrote: > > On Wed, Apr 13, 2022 at 10:11:37AM +0300, Ramon Fried wrote: > > MAX_UIO_MAPS and MAX_UIO_PORT_REGIONS are hard-coded to 5. > > This is not always sufficiant for some drivers. > > Why not? What in-kernel drivers need more than this? Obviously kernel drivers don't need more, but I'm developing a driver that needs more. > > > Make the MAX_UIO_MAPS and MAX_UIO_PORT_REGIONS configurable by > > providing Kconfig int option with the defaut value of 5. > > Spelling check? Ack, will do. > > > > > Signed-off-by: Ramon Fried <rfried.dev@gmail.com> > > --- > > drivers/uio/Kconfig | 14 ++++++++++++++ > > include/linux/uio_driver.h | 4 ++-- > > 2 files changed, 16 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig > > index 2e16c5338e5b..bc1fe83cec13 100644 > > --- a/drivers/uio/Kconfig > > +++ b/drivers/uio/Kconfig > > @@ -13,6 +13,20 @@ menuconfig UIO > > > > if UIO > > > > +config UIO_MAX_MAPS > > + int "Maximum of memory nodes each uio device support(1-128)" > > Space before "(" please. Ack > > > + range 1 128 > > + default 5 > > + help > > + Maximum memory mapping each uio device can support. > > Any hints as to what this means in more detail? Sure. > > > + > > +config UIO_MAX_PORT_REGIONS > > + int "Maximum of port regions each uio device support(1-128)" > > + range 1 128 > > + default 5 > > + help > > + Maximum port regions each uio device can support. > > Again more detail please. Sure. > > thanks, > > greg k-h
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