[rfc, PATCH v1 0/2] overflow: Convert size_add() to take variadic arguments

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

This is an RFC!

We have already users that want add sizes of up to 5 arguments and
I know about at least one that also wants 3 or 4.

This is brave move to make size_add() to take variadic arguments.
The second patch is an example of use.

The implementation includes a case with a single argument on a purpose.
In the future it might be extended to take an array as an argument,
something like

	int sizes[21];
	size_add(sizes);

where the first element is amount of entries in the array (the same format
as used in get_options() call) or other possible variants. This can be
distinguished by _Generic().

But it may be dropped and we require always two arguments at minimum.

The RFC just to collect opinions and perception. Note, array3*(), min3()/max3()
and all like that also can use similar approach.

Andy Shevchenko (2):
  overflow: Allow to sum a few arguments at once
  wifi: nl80211: Call size_add() only once

 include/linux/overflow.h | 37 ++++++++++++++++++++++++++-----------
 net/wireless/nl80211.c   | 11 ++++-------
 2 files changed, 30 insertions(+), 18 deletions(-)

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2.50.1