Messages in this thread | | | Date | Tue, 19 Jan 2021 18:16:37 +0100 | From | Willy Tarreau <> | Subject | Re: rcutorture initrd/nolibc build on ARMv8? |
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Hi Mark,
On Tue, Jan 19, 2021 at 05:02:38PM +0000, Mark Rutland wrote: > > I can't spot from the report above the original C file that was attempted > > to be built, it makes me think we tried to compile directly the .h file. > > That was the inline snippet in > tools/testing/selftests/rcutorture/bin/mkinitrd.sh: > > | #ifndef NOLIBC > | #include <unistd.h> > | #include <sys/time.h> > | #endif > | > | volatile unsigned long delaycount; > | > | int main(int argc, int argv[]) > | { > | int i; > | struct timeval tv; > | struct timeval tvb; > | > | for (;;) { > | sleep(1); > | /* Need some userspace time. */ > | if (gettimeofday(&tvb, NULL)) > | continue; > | do { > | for (i = 0; i < 1000 * 100; i++) > | delaycount = i * i; > | if (gettimeofday(&tv, NULL)) > | break; > | tv.tv_sec -= tvb.tv_sec; > | if (tv.tv_sec > 1) > | break; > | tv.tv_usec += tv.tv_sec * 1000 * 1000; > | tv.tv_usec -= tvb.tv_usec; > | } while (tv.tv_usec < 1000); > | } > | return 0; > | } > > ... which gets written to a file called init.c, and then built with: > > | ${CROSS_COMPILE}gcc -fno-asynchronous-unwind-tables -fno-ident \ > | -nostdlib -include ../../../../include/nolibc/nolibc.h \ > | -lgcc -s -static -Os -o init init.c
OK I'll retry this, thank you!
> I was building natively on an arm64 box: > > | ./tools/testing/selftests/rcutorture/bin/kvm.sh \ > | --cpus 250 --trust-make --configs "TREE03" \ > | --kmake-arg "CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64" > > > Having it run through sh -x would help me try to locate the root cause or > > possibly even attempt to reproduce it. > > I ran with sh -x, but it didn't log the compiler invocation; hopefully > the above is sufficient?
I guess so, yes. I'm pretty sure I'll come back with new questions soon :-)
Thanks, Willy
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