Messages in this thread | | | Date | Thu, 28 Nov 2019 16:07:21 +0100 | From | Thomas Bogendoerfer <> | Subject | Re: MIPS: bug: gettimeofday syscall broken on CI20 board |
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On Thu, Nov 28, 2019 at 02:48:46PM +0100, H. Nikolaus Schaller wrote: > > What still does not fit into the picture is the errno = 1 i.e. EPERM. > Maybe I have to study the libc code that tries to read the ELF symbols > you have mentioned. It may fail for unknown reasons.
to understand vdso you might look at arch/mips/vdso and lib/vdso kernel sources.
And if I understand it correctly you neither have a working high resolution timer usable bei do_hres() in lib/vdso/gettimeofday.c or a working gettimeofday_fallback(), which is enabled via CONFIG_MIPS_CLOCK_VSYSCALL and needs either CSRC_R4K or CLKSRC_MIPS_GIC.
Thomas.
-- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
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