Re: [Qemu-block] [Qemu-devel] [PATCH 3/9] IDE: add tracing for data ports

2017-08-08 Thread John Snow


On 08/08/2017 04:30 PM, Eric Blake wrote:
> On 08/08/2017 01:33 PM, John Snow wrote:
>> To be used sparingly, but still interesting in the case of small
>> firmwares designed to reproduce bugs in QEMU IDE.
> 
> Is that because the trace would fire so frequently in normal usage that
> it will drown the user in noise?
> 

Yeah, and it's of little use for a real guest due to the volume and
relative unimportance of what that data actually is

>>
>> Signed-off-by: John Snow 
>> ---
>>  hw/ide/core.c | 12 +++-
>>  1 file changed, 11 insertions(+), 1 deletion(-)
>>
> 
> Reviewed-by: Eric Blake 
> 



Re: [Qemu-block] [Qemu-devel] [PATCH 3/9] IDE: add tracing for data ports

2017-08-08 Thread Eric Blake
On 08/08/2017 03:30 PM, Eric Blake wrote:
> On 08/08/2017 01:33 PM, John Snow wrote:
>> To be used sparingly, but still interesting in the case of small
>> firmwares designed to reproduce bugs in QEMU IDE.
> 
> Is that because the trace would fire so frequently in normal usage that
> it will drown the user in noise?
> 
>>
>> Signed-off-by: John Snow 
>> ---
>>  hw/ide/core.c | 12 +++-
>>  1 file changed, 11 insertions(+), 1 deletion(-)
>>
> 
> Reviewed-by: Eric Blake 

Argh. I had two compose windows open at once. R-b is only valid if you
fix the time-traveling trace-events changes :)

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.   +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



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Re: [Qemu-block] [Qemu-devel] [PATCH 3/9] IDE: add tracing for data ports

2017-08-08 Thread Eric Blake
On 08/08/2017 01:33 PM, John Snow wrote:
> To be used sparingly, but still interesting in the case of small
> firmwares designed to reproduce bugs in QEMU IDE.

Is that because the trace would fire so frequently in normal usage that
it will drown the user in noise?

> 
> Signed-off-by: John Snow 
> ---
>  hw/ide/core.c | 12 +++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 

Reviewed-by: Eric Blake 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.   +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



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Re: [Qemu-block] [Qemu-devel] [PATCH 3/9] IDE: add tracing for data ports

2017-08-08 Thread John Snow


On 08/08/2017 04:10 PM, Eric Blake wrote:
> On 08/08/2017 01:33 PM, John Snow wrote:
>> To be used sparingly, but still interesting in the case of small
>> firmwares designed to reproduce bugs in QEMU IDE.
>>
>> Signed-off-by: John Snow 
>> ---
>>  hw/ide/core.c | 12 +++-
>>  1 file changed, 11 insertions(+), 1 deletion(-)
>>
>> diff --git a/hw/ide/core.c b/hw/ide/core.c
>> index 6235bdf..29848ff 100644
>> --- a/hw/ide/core.c
>> +++ b/hw/ide/core.c
>> @@ -2251,6 +2251,8 @@ void ide_data_writew(void *opaque, uint32_t addr, 
>> uint32_t val)
>>  IDEState *s = idebus_active_if(bus);
>>  uint8_t *p;
>>  
>> +trace_ide_data_writew(addr, val, bus, s);
> 
> Umm, where's the trace-events addition for this?
> 

Accidentally traveled forward through time to patch 04.



Re: [Qemu-block] [Qemu-devel] [PATCH 3/9] IDE: add tracing for data ports

2017-08-08 Thread Eric Blake
On 08/08/2017 01:33 PM, John Snow wrote:
> To be used sparingly, but still interesting in the case of small
> firmwares designed to reproduce bugs in QEMU IDE.
> 
> Signed-off-by: John Snow 
> ---
>  hw/ide/core.c | 12 +++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/ide/core.c b/hw/ide/core.c
> index 6235bdf..29848ff 100644
> --- a/hw/ide/core.c
> +++ b/hw/ide/core.c
> @@ -2251,6 +2251,8 @@ void ide_data_writew(void *opaque, uint32_t addr, 
> uint32_t val)
>  IDEState *s = idebus_active_if(bus);
>  uint8_t *p;
>  
> +trace_ide_data_writew(addr, val, bus, s);

Umm, where's the trace-events addition for this?

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.   +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



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