combine per-cpu trace files

combine per-cpu trace files

[Arend van Spriel]

Hi Steven,

Regarding trace-cmd I have a question about the trace files. While
debugging an driver issue I had trace-cmd recording driver events on the
target system until it crashed and I had to power down the machine. Now
I have three trace-cmd files: trace.dat, trace.cpu1 and trace.cpu2.
trace-cmd combines the per-cpu files into final trace.dat, but would it
be possible to do that as a separate post process after a crash/abort.

Regards,
Arend

Re: combine per-cpu trace files

[Steven Rostedt]

On Mon, 24 Feb 2014 13:07:50 +0100
Arend van Spriel <arend@broadcom.com> wrote:

> Hi Steven,
> 
> Regarding trace-cmd I have a question about the trace files. While
> debugging an driver issue I had trace-cmd recording driver events on the
> target system until it crashed and I had to power down the machine. Now
> I have three trace-cmd files: trace.dat, trace.cpu1 and trace.cpu2.
> trace-cmd combines the per-cpu files into final trace.dat, but would it
> be possible to do that as a separate post process after a crash/abort.

Yep, if you installed the trace-cmd man pages (make install_doc) then
do a "man trace-cmd-restore"

-- Steve

Re: combine per-cpu trace files

[Arend van Spriel]

On 02/24/2014 02:36 PM, Steven Rostedt wrote:
> On Mon, 24 Feb 2014 13:07:50 +0100
> Arend van Spriel <arend@broadcom.com> wrote:
> 
>> Hi Steven,
>>
>> Regarding trace-cmd I have a question about the trace files. While
>> debugging an driver issue I had trace-cmd recording driver events on the
>> target system until it crashed and I had to power down the machine. Now
>> I have three trace-cmd files: trace.dat, trace.cpu1 and trace.cpu2.
>> trace-cmd combines the per-cpu files into final trace.dat, but would it
>> be possible to do that as a separate post process after a crash/abort.
> 
> Yep, if you installed the trace-cmd man pages (make install_doc) then
> do a "man trace-cmd-restore"

Nope. But I have a cloned repo so I think I will manage ;-)

Thanks,
Arend

> -- Steve
> 
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