Re: [Qemu-devel] [PATCH qemu] loader: Trace loaded images

[Philippe Mathieu-Daudé]

On 6/14/19 11:33 AM, Stefan Hajnoczi wrote:
> On Fri, Jun 14, 2019 at 10:13:04AM +1000, Alexey Kardashevskiy wrote:
>>
>>
>> On 13/06/2019 23:08, Philippe Mathieu-Daudé wrote:
>>> Hi Alexey,
>>>
>>> On 6/13/19 7:09 AM, Alexey Kardashevskiy wrote:
>>>> This adds a trace point which prints every loaded image. This includes
>>>> bios/firmware/kernel/initradmdisk/pcirom.
>>>>
>>>> Signed-off-by: Alexey Kardashevskiy <address@hidden>
>>>> ---
>>>>
>>>> The example for a pseries guest:
>>>>
>>>> loader_write_rom slof.bin: @0x0 size=0xe22e0 ROM=0
>>>> loader_write_rom phdr #0: /home/aik/t/vml4120le: @0x400000 size=0x13df000 
>>>> ROM=0
>>>> loader_write_rom /home/aik/t/le.cpio: @0x1ad0000 size=0x9463a00 ROM=0
>>>
>>> I find the "ROM=0" part confuse, maybe you can change to "ROM:false".
>>
>> How? I mean I can do that in the code as rom->isrom?"true":"false" and
>> make trace point accept "%s" but it is quite ugly and others seem to
>> just use %d for bool.
> 
> Yes, %d is the convention for bool.  Perhaps you can name it "is_rom"
> instead of "ROM".  That way the name communicates that this is a boolean
> value.

I agree a boolean is easier to parse for trace analyzer tools than a
"true/false" string.

Stefan, is it possible to add a boolean format string to the backends?
For example the 'log' backend would log it as "true"/"false".

Just a thought ;)

Regards,

Phil.

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