Re: [PATCH] Avoid overflows in kernel/time.c (version 4)

> diff --git a/kernel/Makefile b/kernel/Makefile > index dfa9695..749825a 100644 > --- a/kernel/Makefile > +++ b/kernel/Makefile > @@ -80,3 +80,11 @@ quiet_cmd_ikconfiggz = IKCFG $@ > targets += config_data.h > $(obj)/config_data.h: $(obj)/config_data.gz FORCE > $(call if_changed,ikconfig

[PATCH] Avoid overflows in kernel/time.c (version 4)

When the conversion factor between jiffies and milli- or microseconds is not a single multiply or divide, as for the case of HZ == 300, we currently do a multiply followed by a divide. The intervening result, however, is subject to overflows, especially since the fraction is not simplified (for HZ