On Oct 9, 2015, at 11:24 PM, James Morse wrote: Hi James,
[ ... ] > I think unwind_frame() needs to walk the irq stack too. [2] is an example > of perf tracing back to userspace, (and there are patches on the list to > do/fix this), so we need to walk back to the start of the first stack for > the perf accounting to be correct. I plan to do re-spin this series without [PATCH 2/2] since 1) Akashi's approach looks better than mine and 2) you have the perf patches for [2]. This would help us to move forward. Thoughts? [ ... ] > [0] sudo ./perf record -e mem:<address of __do_softirq()>:x -ag -- sleep 10 > [1] sudo ./perf report --call-graph --stdio > [2] http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html Best Regards Jungseok Lee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
