[PATCH v5 0/3] KVM: perf: kvm events analysis tool

[Xiao Guangrong]

Changlong:

Thanks to David's review, there are some changes:
- add kvm-events compile-depend files to tools/perf/MANIFEST

- fix some typos and little clean up

- rebase it on -tip tree

The output example is following:

#./perf kvm-events report --event mmio --vcpu 3


Analyze events for VCPU 3:

         MMIO Access    Samples  Samples%     Time%         Avg time

        0xfee00380:W      29688    61.16%    64.52%      3.37us ( +-   0.86% )
        0xfee00300:W       6285    12.95%    20.06%      4.95us ( +-   2.34% )
        0xfee00300:R       6285    12.95%     8.08%      1.99us ( +-   0.59% )
        0xfee00310:W       6285    12.95%     7.34%      1.81us ( +-   6.76% )

Total Samples:48543, Total events handled time:155156.31us.

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