Re: [PATCH] ia64 oprofile support for 2.6.0-test4

From: Will Cohen <wcohen_at_redhat.com>
Date: 2003-08-27 08:02:58
David Mosberger wrote:
>>>>>>On Tue, 26 Aug 2003 17:19:14 -0400, Will Cohen <wcohen@redhat.com> said:
>>>>>
> 
>   Will> For OProfile it didn't make a difference, but for the
>   Will> histograms it is wasteful. I didn't think about the impact on
>   Will> the traditional histogram.
> 
> You can't just break existing data formats for absolutely no reason.
> 
>   Will> Do the histogram analysis tools currently handle
> 
> Yes.  For example, I use "readprofile -b" from time to time to get
> instruction-level histograms.
> 
>   Will> the fiction of bundle instruction 0 at address ending in 0,
>   Will> bundle instruction 1 ending in 4, and bundle instruction 2 in
>   Will> 8? GDB doesn't.
> 
> And encoding the slot number in bits 0 and 1 is somehow less
> fictitious? ;-)

They are equally fictitious. I just happen to pick the wrong one. I 
changed the patch to be compatible with the existing data format used 
for the kernel profiling.

-Will



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Received on Tue Aug 26 18:35:23 2003

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