[lttng-dev] make a trace_event in a modul (driver)

[klaus.dannecker@gmx.de (Klaus Dannecker)]

Hi,

Nobody can help me?

now i have ubuntu 13.10 installed  in a vmware.
but i have the same error!

s$ sudo make modules_install
make -C /lib/modules/3.11.0-12-generic/build 
M=/home/klaus/lttng_src/lttng-modules modules_install
make[1]: Entering directory `/usr/src/linux-headers-3.11.0-12-generic'
   INSTALL /home/klaus/lttng_src/lttng-modules/lib/lttng-lib-ring-buffer.ko
Can't read private key
....
lsmod | grep lttng
-> no module found

Thanks!

Am 13.11.2013 18:37, schrieb Klaus Dannecker:
>
> Am 09.11.2013 09:33, schrieb Klaus Dannecker:
>> Hi,
>> I want to write a driver with trace events.
>> In the first step i compile the example  trace-events-sample.c with 
>> the makefile:
>>
>> ifneq ($(KERNELRELEASE),)
>>     obj-m  := modul_trace-events-sample.o
>>     modul_trace-events-sample-y := trace-events-sample.o
>>     ccflags-y := -I$(src)
>> else
>>     KDIR ?= /lib/modules/`uname -r`/build
>> default:
>>     $(MAKE) -C $(KDIR) M=$$PWD
>> endif
>>
>> now i get the modul_trace-events-sample.ko File.
>> now:
>> insmod modul_trace-events-sample.ko
>> lttng create
>> lttng enable-event -k -a
>> lttng start
>> ...wait...
>> lttng stop
>> lttng destroy
>>
>> now i look the result in the eclise viewer, but i found event 
>> "trace_foo_bar" not in the session!
>> what am I doing wrong?
>>
>> I use ubuntu 13.04 in a vmware
>>
>> Thanks
>>
>> _______________________________________________
> Hi,
>
> now i found a answer:
> http://lists.lttng.org/pipermail/lttng-dev/2013-October/021540.html
> now i download the lttng-module and compiled it.
> |$ git clone git://git.lttng.org/lttng-modules.git
> ||$ cd lttng-tools|
> |$ make|
> |$ sudo make modules_install
> |here I get  error
> INSTALL /mnt/hgfs/shared_Folder/lttng-modules/lib/lttng-lib-ring-buffer.ko
> Can't read private key
> ...
> what does that mean?
> what  should I do?
>
> please help me!
>
> another question:
> when i create atrace events in module_a,
> can i use it in module_b?
> if yes,what  should I do?
> thanks Klaus
>
>
> _______________________________________________
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> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

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