RelayFS does not appear to be in this kernel -> Pass 4: compilation failed

Tomasz Chmielewski mangoo@wpkg.org
Sat Apr 14 13:35:00 GMT 2007 

I'm trying to use SystemTap.

I followed the instructions here:

http://sourceware.org/systemtap/wiki/SystemTapWithSelfBuiltKernel


I built the kernel with these options:

Kernel hacking  --->
     [*] Kernel debugging
         [*]   Compile the kernel with debug info
Instrumentation Support  --->
     [*] Kprobes (EXPERIMENTAL)


And also, with CONFIG_RELAY, despite the documentation says it's optional.

General setup  --->
     [*] Kernel->user space relay support (formerly relayfs)


Now, I try to run a simple "hello world", but it fails with:

/usr/local/share/systemtap/runtime/transport/relayfs.c:17:2: error: 
#error "RelayFS does not appear to be in this kernel!"
/usr/local/share/systemtap/runtime/transport/relayfs.c:23:30: error: 
linux/relayfs_fs.h: No such file or directory
cc1: warnings being treated as errors


What am I missing? I'm running 2.6.20.4 kernel.

# stap -vve 'probe begin { log("hello world") exit () }'
SystemTap translator/driver (version 0.5.14 built 2007-04-14)
(Using Red Hat elfutils 0.125 libraries.)
Copyright (C) 2005-2007 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
Created temporary directory "/root/tmp/stap2lbmof"
Searched 
'/usr/local/share/systemtap/tapset/2.6.20.4-4mdvtmbcustom/i686/*.stp', 
match count 0
Searched 
'/usr/local/share/systemtap/tapset/2.6.20.4-4mdvtmbcustom/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/2.6.20.4/i686/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/2.6.20.4/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/2.6.20/i686/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/2.6.20/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/2.6/i686/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/2.6/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/i686/*.stp', match count 1
Searched '/usr/local/share/systemtap/tapset/*.stp', match count 34
Searched 
'/usr/local/share/systemtap/tapset/LKET/2.6.20.4-4mdvtmbcustom/i686/*.stp', 
match count 0
Searched 
'/usr/local/share/systemtap/tapset/LKET/2.6.20.4-4mdvtmbcustom/*.stp', 
match count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6.20.4/i686/*.stp', 
match count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6.20.4/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6.20/i686/*.stp', 
match count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6.20/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6/i686/*.stp', match 
count 0
Searched '/usr/local/share/systemtap/tapset/LKET/2.6/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/LKET/i686/*.stp', match count 0
Searched '/usr/local/share/systemtap/tapset/LKET/*.stp', match count 19
Pass 1: parsed user script and 54 library script(s) in 
300usr/10sys/458real ms.
Pass 2: analyzed script: 1 probe(s), 2 function(s), 0 embed(s), 0 
global(s) in 10usr/0sys/6real ms.
Pass 3: translated to C into 
"/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.c" in 
0usr/0sys/0real ms.
Running make -C "/lib/modules/2.6.20.4-4mdvtmbcustom/build" 
M="/root/tmp/stap2lbmof" modules V=1
make: Entering directory `/usr/src/2.6.20.4-tmb-4mdv'
test -e include/linux/autoconf.h -a -e include/config/auto.conf || ( 
         \
         echo;                                                           \
         echo "  ERROR: Kernel configuration is invalid.";               \
         echo "         include/linux/autoconf.h or 
include/config/auto.conf are missing.";      \
         echo "         Run 'make oldconfig && make prepare' on kernel 
src to fix it.";  \
         echo;                                                           \
         /bin/false)
mkdir -p /root/tmp/stap2lbmof/.tmp_versions
rm -f /root/tmp/stap2lbmof/.tmp_versions/*
make -f scripts/Makefile.build obj=/root/tmp/stap2lbmof
   gcc -m32 
-Wp,-MD,/root/tmp/stap2lbmof/.stap_c0214b52f983948bad6db7c010ab7cb9_341.o.d 
  -nostdinc -isystem /usr/lib/gcc/i586-mandriva-linux-gnu/4.1.2/include 
-D__KERNEL__ -Iinclude  -include include/linux/autoconf.h -Wall -Wundef 
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Os 
-pipe -msoft-float -mregparm=3 -mpreferred-stack-boundary=2  -march=i586 
-mtune=generic -ffreestanding -maccumulate-outgoing-args 
-DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 
-Iinclude/asm-i386/mach-default -fomit-frame-pointer -g 
-fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign 
-DSTAPCONF_HRTIMER_REL -freorder-blocks -Wno-unused -Werror 
-I"/usr/local/share/systemtap/runtime"   -DMODULE -D"KBUILD_STR(s)=#s" 
-D"KBUILD_BASENAME=KBUILD_STR(stap_c0214b52f983948bad6db7c010ab7cb9_341)" 
 
-D"KBUILD_MODNAME=KBUILD_STR(stap_c0214b52f983948bad6db7c010ab7cb9_341)" 
-c -o 
/root/tmp/stap2lbmof/.tmp_stap_c0214b52f983948bad6db7c010ab7cb9_341.o 
/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.c
In file included from 
/usr/local/share/systemtap/runtime/transport/transport.c:24,
                  from /usr/local/share/systemtap/runtime/print.c:17,
                  from /usr/local/share/systemtap/runtime/runtime.h:81,
                  from 
/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.c:42:
/usr/local/share/systemtap/runtime/transport/relayfs.c:17:2: error: 
#error "RelayFS does not appear to be in this kernel!"
/usr/local/share/systemtap/runtime/transport/relayfs.c:23:30: error: 
linux/relayfs_fs.h: No such file or directory
cc1: warnings being treated as errors
In file included from 
/usr/local/share/systemtap/runtime/transport/transport.c:24,
                  from /usr/local/share/systemtap/runtime/print.c:17,
                  from /usr/local/share/systemtap/runtime/runtime.h:81,
                  from 
/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.c:42:
/usr/local/share/systemtap/runtime/transport/relayfs.c:35: warning: 
'struct rchan_buf' declared inside parameter list
/usr/local/share/systemtap/runtime/transport/relayfs.c:35: warning: its 
scope is only this definition or declaration, which is probably not what 
you want
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'_stp_subbuf_start':
/usr/local/share/systemtap/runtime/transport/relayfs.c:37: error: 
dereferencing pointer to incomplete type
/usr/local/share/systemtap/runtime/transport/relayfs.c: At top level:
/usr/local/share/systemtap/runtime/transport/relayfs.c:49: warning: 
'struct rchan_buf' declared inside parameter list
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'_stp_buf_full':
/usr/local/share/systemtap/runtime/transport/relayfs.c:51: error: 
dereferencing pointer to incomplete type
/usr/local/share/systemtap/runtime/transport/relayfs.c: At top level:
/usr/local/share/systemtap/runtime/transport/relayfs.c:55: error: 
variable 'stp_rchan_callbacks' has initializer but incomplete type
/usr/local/share/systemtap/runtime/transport/relayfs.c:57: error: 
unknown field 'subbuf_start' specified in initializer
/usr/local/share/systemtap/runtime/transport/relayfs.c:57: warning: 
excess elements in struct initializer
/usr/local/share/systemtap/runtime/transport/relayfs.c:57: warning: 
(near initialization for 'stp_rchan_callbacks')
/usr/local/share/systemtap/runtime/transport/relayfs.c:58: error: 
unknown field 'buf_full' specified in initializer
/usr/local/share/systemtap/runtime/transport/relayfs.c:58: warning: 
excess elements in struct initializer
/usr/local/share/systemtap/runtime/transport/relayfs.c:58: warning: 
(near initialization for 'stp_rchan_callbacks')
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'_stp_remove_relay_dir':
/usr/local/share/systemtap/runtime/transport/relayfs.c:65: warning: 
implicit declaration of function 'relayfs_remove_dir'
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'utt_trace_setup':
/usr/local/share/systemtap/runtime/transport/relayfs.c:92: warning: 
implicit declaration of function 'relayfs_create_dir'
/usr/local/share/systemtap/runtime/transport/relayfs.c:92: warning: 
assignment makes pointer from integer without a cast
/usr/local/share/systemtap/runtime/transport/relayfs.c:98: warning: 
implicit declaration of function 'relay_open'
/usr/local/share/systemtap/runtime/transport/relayfs.c:98: warning: 
assignment makes pointer from integer without a cast
/usr/local/share/systemtap/runtime/transport/relayfs.c:102: error: 
dereferencing pointer to incomplete type
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'utt_trace_startstop':
/usr/local/share/systemtap/runtime/transport/relayfs.c:141: warning: 
implicit declaration of function 'relay_flush'
/usr/local/share/systemtap/runtime/transport/relayfs.c: In function 
'utt_trace_remove':
/usr/local/share/systemtap/runtime/transport/relayfs.c:154: warning: 
implicit declaration of function 'relay_close'
In file included from /usr/local/share/systemtap/runtime/print.c:17,
                  from /usr/local/share/systemtap/runtime/runtime.h:81,
                  from 
/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.c:42:
/usr/local/share/systemtap/runtime/transport/transport.c: In function 
'_stp_lock_debugfs':
/usr/local/share/systemtap/runtime/transport/transport.c:302: warning: 
assignment makes pointer from integer without a cast
/usr/local/share/systemtap/runtime/transport/transport.c: In function 
'_stp_get_root_dir':
/usr/local/share/systemtap/runtime/transport/transport.c:351: warning: 
assignment makes pointer from integer without a cast
make[1]: *** 
[/root/tmp/stap2lbmof/stap_c0214b52f983948bad6db7c010ab7cb9_341.o] Error 1
make: *** [_module_/root/tmp/stap2lbmof] Error 2
make: Leaving directory `/usr/src/2.6.20.4-tmb-4mdv'
Pass 4: compiled C into "stap_c0214b52f983948bad6db7c010ab7cb9_341.ko" 
in 1100usr/250sys/1738real ms.
Pass 4: compilation failed.  Try again with more '-v' (verbose) options.
Running rm -rf /root/tmp/stap2lbmof


-- 
Tomasz Chmielewski
http://wpkg.org

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