Re: trace_printk() support in trace-cmd

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On 12/12/2010 07:36 PM, Arnaldo Carvalho de Melo wrote:
Em Sun, Dec 12, 2010 at 06:35:24PM +0200, Avi Kivity escreveu:
>  On 11/23/2010 05:45 PM, Steven Rostedt wrote:
>  >Again, the work around is to replace your trace_printks() with
>  >__trace_printk(_THIS_IP_, ...) or just modify the trace_printk() macro
>  >in include/linux/kernel.h to always use the __trace_printk() version.
>
>  This works; I'm using it for now (I tried to use 'perf probe', but I
>  get unpredictable results, like null pointer derefs).

Can you tell us which functions, environment, etc?

Something around 2.6.27-rc4; example functions are FNAME(fetch) in arch/x86/kvm/paging_tmpl.h; compiled modular (which was Steven's guess as to why it fails).

(note, the failure is with trace-cmd, not /sys/kernel/debug/tracing).

--
error compiling committee.c: too many arguments to function

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