Re: Script with static probe point throws error in Pass 3

[David Smith <dsmith at redhat dot com>]

beginner966 wrote:
> I got the following error while probing static probe points.
> 
> Pass 3: translated to C into
> "/tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c" in
> 1030usr/550sys/2102real ms.
> Running make -C "/lib/modules/2.6.26.5-rt9/build" M="/tmp/stapS8IQsL"
> modules >/dev/null
> cc1: warnings being treated as errors
> /tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c: In function
> Ãsystemtap_module_initÃ:
> /tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c:853: warning:
> passing argument 3 of Ãmarker_probe_registerà from incompatible pointer type
> /tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c:857: warning:
> passing argument 2 of Ãmarker_probe_unregisterà from incompatible pointer
> type
> /tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c: In function
> Ãsystemtap_module_exitÃ:
> /tmp/stapS8IQsL/stap_ef975aa4108a2079c82c8d4c7d4fccaf_1986.c:945: warning:
> passing argument 2 of Ãmarker_probe_unregisterà from incompatible pointer
> type
> 
> 
> Please suggest some solutions. Thanks.

Hmm.  I can't think of why we'd have trouble calling
marker_probe_register()/marker_probe_unregister().  The calling
conventions for those haven't changed that I can recall.

Can you show me the declarations for those two functions from
linux/marker.h?  They should look like:

----
extern int marker_probe_register(const char *name, const char *format,
                      marker_probe_func *probe, void *probe_private);

extern int marker_probe_unregister(const char *name,
        marker_probe_func *probe, void *probe_private);
----

-- 
David Smith
dsmith@redhat.com
Red Hat
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