[Tracing] Deciding the Yaml configuration for barectf input

[Sebastian Huber]

On 07/06/18 11:31, Vidushi Vashishth wrote:
> Hi!
>
> Quick question. I tried to modify the printk trace generator to print 
> the output traces into a text file instead of the console. On running 
> the normal link and trace linker commands there are no compilation 
> errors. However when I run the application executable using GDB it 
> says [Inferior 1 (process 42000) exited normally].
>
> This is what I am doing to the code section of the rtld-print.ini's 
> printk generator:
>
> static inline void rtld_pg_printk_entry(const char* func_name,
>                                         void*       func_addr)
> {
>   FILE* fp = fopen("trace.txt", "a");

Always check the return value of functions which may fail.

>   fprintf (fp, ">>> %s (0x%08x)\n", func_name, func_addr);
>   fclose(fp);
> }
>
> Is there something wrong with this approach?

Maybe the wrong execution context. The fprintf() must be called from 
task context. I would debug the rtld_pg_printk_entry() function to 
figure out what is going on.

-- 
Sebastian Huber, embedded brains GmbH

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