Doug Moore 6f309b9d56 log2: move log2 functions from linuxkpi to libkern ... Linux has a header file that defines an ilog2 function and some simple functions/macros that use it: roundup_pow_of_two, is_power_of_2, rounddown_pow_of_two, and order_base_2. This change moves three of those simple functions (all but is_power_of_2) from linuxkpi to libkern. It also deletes a few implementations of these functions that have previously been copied into code for various device drivers, so that they can use the libkern version. The is_power_of_2 macro was not moved because powerof2 in param.h provides almost the same service already (except that they disagree about whether 0 is a power of two). Since the linux definitions of these functions were copied into FreeBSD 11 years ago, linux has improved them, and this change provides those improvements. In particular, a giant table of log values for evaluating ilog2 for constant values is no longer necessary. Reviewed by: alc, markj (previous version) Differential Revision: https://reviews.freebsd.org/D45536 (cherry picked from commit c8b0c33b03ac072413b27bed2bdae2ae27426f3a)		2025-02-10 04:29:23 -06:00
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common	log2: move log2 functions from linuxkpi to libkern	2025-02-10 04:29:23 -06:00
dummy/include	LinuxKPI: add new dummy headers visibility.h and of_net.h	2024-10-16 21:50:30 +00:00