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div128_by_32() used to be called from outside time.c in the old days but since v2.6.15 it hasn't been used outside time.c $ git grep div128_by_32 v2.6.14 v2.6.14:arch/ppc64/kernel/iSeries_setup.c: div128_by_32(1024 * 1024, 0, tb_ticks_per_sec, &divres); v2.6.14:arch/ppc64/kernel/pmac_time.c: div128_by_32( 1024*1024, 0, tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32( XSEC_PER_SEC, 0, tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32(1024*1024, 0, tb_ticks_per_sec, &divres); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32(1000000000, 0, tb_ticks_per_sec, &res); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32( 1024*1024, 0, new_tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c:void div128_by_32( unsigned long dividend_high, unsigned long dividend_low, v2.6.14:include/asm-ppc64/time.h:void div128_by_32( unsigned long dividend_high, unsigned long dividend_low, $ git grep div128_by_32 v2.6.15 v2.6.15:arch/powerpc/kernel/time.c: div128_by_32( XSEC_PER_SEC, 0, tb_ticks_per_sec, &divres ); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1024*1024, 0, tb_ticks_per_sec, &res); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1000000000, 0, tb_ticks_per_sec, &res); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1024*1024, 0, new_tb_ticks_per_sec, &divres); v2.6.15:arch/powerpc/kernel/time.c:void div128_by_32(u64 dividend_high, u64 dividend_low, v2.6.15:include/asm-powerpc/time.h:extern void div128_by_32(u64 dividend_high, u64 dividend_low, Move it above its only caller which is time_init() and define it static and __init. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/50810349bf1eee378fbeab72a36e4b6553a60c3d.1738749246.git.christophe.leroy@csgroup.eu
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.