Re: [PATCH 10/10] REMOVE: Instrumentation to show the module functions being replaced

[Christophe de Dinechin]

On 2020-06-26 at 19:29 CEST, Daniel P. Berrangé wrote...
> On Fri, Jun 26, 2020 at 06:43:07PM +0200, Christophe de Dinechin wrote:
>> Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
>> ---
>>  include/qemu/module.h | 4 ++++
>>  1 file changed, 4 insertions(+)
>>
>> diff --git a/include/qemu/module.h b/include/qemu/module.h
>> index 1922a0293c..8d6e10ba81 100644
>> --- a/include/qemu/module.h
>> +++ b/include/qemu/module.h
>> @@ -14,10 +14,13 @@
>>  #ifndef QEMU_MODULE_H
>>  #define QEMU_MODULE_H
>>
>> +#include "trace/recorder.h"
>>
>>  #define DSO_STAMP_FUN         glue(qemu_stamp, CONFIG_STAMP)
>>  #define DSO_STAMP_FUN_STR     stringify(DSO_STAMP_FUN)
>>
>> +RECORDER_DECLARE(modules);
>> +
>>  #ifdef BUILD_DSO
>>  void DSO_STAMP_FUN(void);
>>  /* This is a dummy symbol to identify a loaded DSO as a QEMU module, so we 
>> can
>> @@ -55,6 +58,7 @@ static void __attribute__((constructor)) do_qemu_init_ ## 
>> function(void)    \
>>      static void __attribute__((constructor)) Name##_register(void)      \
>>      {                                                                   \
>>          Name = Name##_implementation;                                   \
>> +        record(modules, "Setting " #Name " to %p", Name);               \
>>      }                                                                   \
>>      Ret Name##_implementation Args
>>  #else /* !CONFIG_MODULES */
>
> Contrary to the commit $SUBJECT, I think you should keep this, not remove
> it. It should use QEMU's trace backend though.

OK. Will add a trace backend version in next iteration.

>
> Regards,
> Daniel


--
Cheers,
Christophe de Dinechin (IRC c3d)