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math: make RATIONAL tristate

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Patch series "math: RATIONAL and RATIONAL_KUNIT_TEST improvements".

This series makes the RATIONAL symbol tristate, so it is not forced
builtin if all users are modular, and makes the RATIONAL_KUNIT_TEST depend
on RATIONAL, to avoid enabling RATIONAL if there are no real users.

This patch (of 2):

All but one symbols that select RATIONAL are tristate, but RATIONAL itself
is bool.  Change it to tristate, so the rational fractions support code
can be modular if no builtin code relies on it.

Link: https://lkml.kernel.org/r/20210706100945.3803694-1-geert@linux-m68k.org
Link: https://lkml.kernel.org/r/20210706100945.3803694-2-geert@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Trent Piepho <tpiepho@gmail.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geert Uytterhoeven 2021-09-07 19:58:33 -07:00 committed by Linus Torvalds
parent 1c3493bb29
commit bcda5fd344
2 changed files with 4 additions and 1 deletions
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2
lib/math/Kconfig
View File

@ -14,4 +14,4 @@ config PRIME_NUMBERS
If unsure, say N.
config RATIONAL
bool
tristate

3
lib/math/rational.c
View File

@ -13,6 +13,7 @@
#include <linux/export.h>
#include <linux/minmax.h>
#include <linux/limits.h>
#include <linux/module.h>
/*
* calculate best rational approximation for a given fraction
@ -106,3 +107,5 @@ void rational_best_approximation(
}
EXPORT_SYMBOL(rational_best_approximation);
MODULE_LICENSE("GPL v2");