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Date: Sun, 4 Feb 2007 03:42:39 +0100 From: Arnd Bergmann <arnd@...db.de> To: cbe-oss-dev@...abs.org Cc: Maynard Johnson <maynardj@...ibm.com>, linuxppc-dev@...abs.org, oprofile-list@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: Re: [Cbe-oss-dev] [RFC, PATCH 4/4] Add support to OProfile for profiling Cell BE SPUs -- update On Saturday 03 February 2007 21:03, Maynard Johnson wrote: > I presume you mean 'object_id'. Right, sorry for the confusion. > What you're asking for is a new > requirement, and one which I don't believe is achievable in the current > timeframe. Since this is spufs code that's dynamicaly loaded into the > SPU at runtime, the symbol information for this code is not accessible > to the userspace post-processing tools. We can always fix the user space tool later, but it is important to get at least the kernel interface right, so we can add the functionality later without breaking new user space on old kernels or vice versa. > It would require an altogether > different mechanism to record samples along with necessary information, > not to mention the changes required in the post-processing tools. This > will have to be a future enhancement. So what do you do with the samples for object_id == 0? I would expect them to be simply added to the sample buffer for the kernel, which is sort of special in oprofile anyway. Arnd <>< - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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