On Mon, 24 Nov 2014 11:50:06 +0900
Masami Hiramatsu <masami.hiramatsu...@hitachi.com> wrote:
> (2014/11/22 6:03), Steven Rostedt wrote:
> > On Fri, 21 Nov 2014 05:25:37 -0500
> > Masami Hiramatsu <masami.hiramatsu...@hitachi.com> wrote:
> >
> >> Add ftrace IPMODIFY flag test to selftest/ftrace. The
> >> test checks simple ftrace handler insertion and
> >> combinations of ftrace, kprobe, and jprobe.
> >> This test requires kernel build tree to build a test
> >> kernel module and root privilege to run.
> >>
> >> Signed-off-by: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
> >>
> >> ---
> >
> > Can you make it so that make O=/path/to/build works?
>
> Hmm, I always use "O=builddir" option in my build script...
But do you use O=builddir where builddir is where the kernel was built?
I don't.
Remember, I build on a server and install on a test box. The server
directory is read only. I can not have O= be the path to where the
kernel was built. I have to use a different directory.
>
> >
> > I tried running this on my test box, which has /home/rostedt mounted
> > read only from my build box, and I get this:
>
> My case is just to keep the source tree clean, so source tree is
> still writable and builddir is under another directory in /home/<user>/.
>
>
> > [root@bxtest ftrace]# make O=/tmp
> > for TARGET in ipmodify; do \
> > make -C $TARGET; \
> > done;
> > make[1]: Entering directory
> > `/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify'
> > make -C /lib/modules/3.18.0-rc1-test+/build
> > M=/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify
> > ipmodify.ko
> > make[2]: Entering directory `/home/rostedt/work/git/nobackup/bxtest/trace'
> > CC [M]
> > /work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.o
> > /bin/sh: ./scripts/recordmcount: Permission denied
>
> Hmm, this error looks odd, not ENOENT but EPERM??
> Could you run it again with V=1 ?
Sure, here's the output:
[root@bxtest ftrace]# make V=1 O=/tmp
for TARGET in ipmodify; do \
make -C $TARGET; \
done;
make[1]: Entering directory
`/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify'
make -C /lib/modules/3.18.0-rc1-test+/build
M=/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify ipmodify.ko
make[2]: Entering directory `/home/rostedt/work/git/nobackup/bxtest/trace'
make -C /home/rostedt/work/git/linux-trace.git
O=/home/rostedt/work/git/nobackup/bxtest/trace/. ipmodify.ko
make -C /home/rostedt/work/git/nobackup/bxtest/trace
KBUILD_SRC=/home/rostedt/work/git/linux-trace.git \
-f /home/rostedt/work/git/linux-trace.git/Makefile ipmodify.ko
test -e include/generated/autoconf.h -a -e include/config/auto.conf || (
\
echo >&2; \
echo >&2 " ERROR: Kernel configuration is invalid."; \
echo >&2 " include/generated/autoconf.h or include/config/auto.conf are
missing.";\
echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix
it."; \
echo >&2 ; \
/bin/false)
mkdir -p
/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/.tmp_versions
; rm -f
/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/.tmp_versions/*
make KBUILD_MODULES=1 \
-f /home/rostedt/work/git/linux-trace.git/scripts/Makefile.build
obj=/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify ipmodify.o
gcc
-Wp,-MD,/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/.ipmodify.o.d
-nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.7.2/include
-I/home/rostedt/work/git/linux-trace.git/arch/x86/include
-Iarch/x86/include/generated -I/home/rostedt/work/git/linux-trace.git/include
-Iinclude -I/home/rostedt/work/git/linux-trace.git/arch/x86/include/uapi
-Iarch/x86/include/generated/uapi
-I/home/rostedt/work/git/linux-trace.git/include/uapi -Iinclude/generated/uapi
-include /home/rostedt/work/git/linux-trace.git/include/linux/kconfig.h
-I/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify
-D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
-fno-strict-aliasing -fno-common -Werror-implicit-function-declaration
-Wno-format-security -m64 -mno-80387 -mno-fp-ret-in-387 -mtune=generic
-mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args
-DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVE
Q=1 -DCONFIG_AS_CRC32=1 -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -pipe
-Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2
-mno-3dnow -mno-avx -fno-delete-null-pointer-checks -Os
-Wno-maybe-uninitialized --param=allow-store-data-races=0
-Wframe-larger-than=2048 -fno-stack-protector -Wno-unused-but-set-variable
-fno-omit-frame-pointer -fno-optimize-sibling-calls
-fno-var-tracking-assignments -g -pg -mfentry -DCC_USING_FENTRY
-Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow
-fconserve-stack -Werror=implicit-int -Werror=strict-prototypes
-DCC_HAVE_ASM_GOTO -DMODULE -D"KBUILD_STR(s)=#s"
-D"KBUILD_BASENAME=KBUILD_STR(ipmodify)"
-D"KBUILD_MODNAME=KBUILD_STR(ipmodify)" -c -o
/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.o
/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.c
if [ "-pg" = "-pg" ]; then if [
/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.o !=
"scripts/mod/empty.o" ]; then ./scripts/recordmcount
"/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.o";
fi; fi;
/bin/sh: ./scripts/recordmcount: Permission denied
make[5]: ***
[/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify/ipmodify.o]
Error 1
make[4]: *** [ipmodify.ko] Error 2
make[3]: *** [sub-make] Error 2
make[2]: *** [__sub-make] Error 2
make[2]: Leaving directory `/home/rostedt/work/git/nobackup/bxtest/trace'
make[1]: *** [ipmodify.ko] Error 2
make[1]: Leaving directory
`/work/git/linux-trace.git/tools/testing/selftests/ftrace/ipmodify'
make: *** [all] Error 2
Thanks (on my way to bed),
-- Steve
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