In the approximately two weeks since Linux 3.4 was released, the kernel developers have integrated features such as uprobes (userspace probes). These can be used by Systemtap and the kernel’s own perf tracing tool to analyse the runtime behaviour of userspace programs. Other important additions to Linux 3.5 include some patches to internal logging functions, championed by Udev maintainer Kay Sievers, which should improve the structured analysis of event logs.
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