Messages in this thread | | | Date | Thu, 05 Dec 2013 17:10:57 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [RFC PATCH tip 0/5] tracing filters with BPF |
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On 12/05/2013 04:14 PM, Andi Kleen wrote: > > In my experience there are roughly two groups of trace users: > kernel hackers and users. The kernel hackers want something > convenient and fast, but for anything complicated or performance > critical they can always hack the kernel to include custom > instrumentation. >
Not to mention that in that case we might as well -- since we need a compiler anyway -- generate the machine code in user space; the JIT solution really only is useful if it can provide something that we can't do otherwise, e.g. enable it in secure boot environments.
-hpa
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