I'm trying to build Takashi's version of latencytest (0.5.3) and
apparently something has changed in the kernel (or I have something that
I need to turn on in the config options?). This is what I get:

# make -f Makefile.module
make -C /lib/modules/`uname -r`/build SUBDIRS=`pwd` modules
make[1]: Entering directory
  CC [M]  /home/nando/software/latencytest/kernel/latencytest.o
  LD [M]  /home/nando/software/latencytest/kernel/latency-test.o
  Building modules, stage 2.
*** Warning: "kallsyms_lookup"
[/home/nando/software/latencytest/kernel/latency-test.ko] undefined!
  CC      /home/nando/software/latencytest/kernel/latency-test.mod.o
  LD [M]  /home/nando/software/latencytest/kernel/latency-test.ko
make[1]: Leaving directory

If I look for that symbol or something similar this is what I get:

# grep _lookup /boot/System.map-2.6.6-1.391.2.ll.rhfc2.ccrma|grep ksym
022b6ee0 r __ksymtab_d_lookup
022b9388 r __ksymtab_flow_cache_lookup
022b6d00 r __ksymtab_lookup_create
022b6d08 r __ksymtab_lookup_hash
022b7050 r __ksymtab_lookup_mnt
022b6d10 r __ksymtab_lookup_one_len
022b95b0 r __ksymtab_neigh_lookup
022b6d48 r __ksymtab_path_lookup
022b9600 r __ksymtab_pneigh_lookup
022b7648 r __ksymtab_radix_tree_gang_lookup
022b7650 r __ksymtab_radix_tree_gang_lookup_tag
022b7630 r __ksymtab_radix_tree_lookup
022b7140 r __ksymtab_simple_lookup
022b90e0 r __ksymtab_sockfd_lookup
022b98a0 r __ksymtab_tcf_police_lookup
022b9b78 r __ksymtab_tcp_v4_lookup_listener
022b9f70 r __ksymtab_xfrm_dst_lookup
022b9df8 r __ksymtab_xfrm_lookup
022b9e50 r __ksymtab_xfrm_state_lookup

-- Fernando

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