The patch titled kernel.h: add {min,max}3 macros has been added to the -mm tree. Its filename is kernelh-add-minmax3-macros.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: kernel.h: add {min,max}3 macros From: Hagen Paul Pfeifer <hagen@xxxxxxxx> Introduce two additional min/max macros to compare three operands. This will save some cycles as well as some bytes on the stack and last but not least more pleasing as macro nesting. Signed-off-by: Hagen Paul Pfeifer <hagen@xxxxxxxx> Cc: Joe Perches <joe@xxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxx> Cc: Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Cc: Roland Dreier <rolandd@xxxxxxxxx> Cc: Sean Hefty <sean.hefty@xxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/kernel.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff -puN include/linux/kernel.h~kernelh-add-minmax3-macros include/linux/kernel.h --- a/include/linux/kernel.h~kernelh-add-minmax3-macros +++ a/include/linux/kernel.h @@ -640,6 +640,22 @@ static inline void ftrace_dump(enum ftra (void) (&_max1 == &_max2); \ _max1 > _max2 ? _max1 : _max2; }) +#define min3(x, y, z) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + typeof(z) _min3 = (z); \ + (void) (&_min1 == &_min2 == &_min3); \ + _min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \ + (_min2 < _min3 ? _min2 : _min3); }) + +#define max3(x, y, z) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + typeof(z) _max3 = (z); \ + (void) (&_max1 == &_max2 == &_max3); \ + _max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \ + (_max2 > _max3 ? _max2 : _max3); }) + /** * clamp - return a value clamped to a given range with strict typechecking * @val: current value _ Patches currently in -mm which might be from hagen@xxxxxxxx are kernelh-add-minmax3-macros.patch replace-nested-max-min-macros-with-maxmin3-macro.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html