Messages in this thread | | | Date | Tue, 25 Jul 2006 15:33:18 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] RTC: Add mmap method to rtc character driver |
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Neil Horman wrote: >> > Yes, but if its in trade for something thats being used currently which hurts > more (case in point being the X server), using this solution is a net gain. > > I'm not arguing with you that adding a low res gettimeofday vsyscall is a better > long term solution, but doing that requires potentially several implementations > in the C library accross a range of architectures, some of which may not be able > to provide a time solution any better than what the gettimeofday syscall > provides today. The /dev/rtc solution is easy, available right now, and applies > to all arches. It has zero impact for systems which do not use it, and for > those applications which make a decision to use it instead of an alternate > method, the result I expect will be a net gain, until such time as we code up, > test and roll out a vsyscall solution >
Quick hacks are frowned upon in the Linux universe. The kernel-user space interface is supposed to be stable, and thus a hack like this has to be maintained indefinitely.
Putting temporary hacks like this in is not a good idea.
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