Messages in this thread | | | Subject | Re: [PATCH 3/4] trace: add ability to collect call chain of non-current task. | From | Peter Zijlstra <> | Date | Tue, 27 Sep 2011 16:05:51 +0200 |
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On Mon, 2011-09-26 at 19:55 +0400, Andrew Vagin wrote: > > Know issues: > * Now call chains for non-current tasks are collected on x86 only, > but it may be done for other architectures simply. > * It collects only kernel call chains, because we can't get direct > access to memory of other processes and this operation should be > fast enough.
Also, it changes the semantics of tracepoint, normally you return the callchain leading to the tracepoint, this changes that.
I'm not entirely against it, as I can see the use, but I would like to solicit other opinions.
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