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Date: Sun, 23 Nov 2014 23:29:32 -0500 From: Steven Rostedt <rostedt@...dmis.org> To: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> Cc: Josh Poimboeuf <jpoimboe@...hat.com>, Ananth N Mavinakayanahalli <ananth@...ibm.com>, Jiri Kosina <jkosina@...e.cz>, Seth Jennings <sjenning@...hat.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Petr Mladek <pmladek@...e.cz>, Vojtech Pavlik <vojtech@...e.cz>, Namhyung Kim <namhyung@...nel.org>, Miroslav Benes <mbenes@...e.cz>, Ingo Molnar <mingo@...nel.org> Subject: Re: [PATCH ftrace/core v6 5/5] kselftest, ftrace: Add ftrace IPMODIFY flag test On Mon, 24 Nov 2014 11:50:06 +0900 Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> wrote: > (2014/11/22 6:03), Steven Rostedt wrote: > > On Fri, 21 Nov 2014 05:25:37 -0500 > > Masami Hiramatsu <masami.hiramatsu.pt@...achi.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.pt@...achi.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@...est 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@...est 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_FXSAVEQ=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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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