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![]() * Theodore Ts'o (tytso@mit.edu) wrote:
>
> I've been playing with adding some markers into ext4 to see if they
> could be useful in solving some problems along with Systemtap. It
> appears, though, that as of 2.6.27-rc8, markers defined in code which is
> compiled directly into the kernel (i.e., not as modules) don't show up
> in Module.markers:
>
> kvm_trace_entryexit arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u
> kvm_trace_handler arch/x86/kvm/kvm-intel %u %p %u %u %u %u %u %u
> kvm_trace_entryexit arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u
> kvm_trace_handler arch/x86/kvm/kvm-amd %u %p %u %u %u %u %u %u
>
> (Note the lack of any of the kernel_sched_* markers, and the markers I
> added for ext4_* and jbd2_* are missing as wel.)
>
> Systemtap apparently depends on in-kernel trace_mark being recorded in
> Module.markers, and apparently it's been claimed that it used to be
> there. Is this a bug in systemtap, or in how Module.markers is getting
> built? And is there a file that contains the equivalent information
> for markers located in non-modules code?
I think the problem comes from "markers: fix duplicate modpost entry"
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basic | ||
genksyms | ||
kconfig | ||
ksymoops | ||
mod | ||
package | ||
rt-tester | ||
.gitignore | ||
bin2c.c | ||
binoffset.c | ||
bloat-o-meter | ||
checkincludes.pl | ||
checkkconfigsymbols.sh | ||
checkpatch.pl | ||
checkstack.pl | ||
checksyscalls.sh | ||
checkversion.pl | ||
cleanfile | ||
cleanpatch | ||
conmakehash.c | ||
decodecode | ||
diffconfig | ||
export_report.pl | ||
extract-ikconfig | ||
gcc-version.sh | ||
gcc-x86_64-has-stack-protector.sh | ||
gen_initramfs_list.sh | ||
headers.sh | ||
headers_check.pl | ||
headers_install.pl | ||
kallsyms.c | ||
Kbuild.include | ||
kernel-doc | ||
Lindent | ||
Makefile | ||
Makefile.build | ||
Makefile.clean | ||
Makefile.fwinst | ||
Makefile.headersinst | ||
Makefile.host | ||
Makefile.lib | ||
Makefile.modinst | ||
Makefile.modpost | ||
makelst | ||
mkcompile_h | ||
mkmakefile | ||
mksysmap | ||
mkuboot.sh | ||
mkversion | ||
namespace.pl | ||
patch-kernel | ||
pnmtologo.c | ||
profile2linkerlist.pl | ||
setlocalversion | ||
show_delta | ||
unifdef.c | ||
ver_linux |