[PATCH V3 0/9] perf: Intel uncore pmu counting support

Yan, Zheng
2012-05-02T02:07:26Z

Hi, all

Here is the V3 patches to add uncore counting support for Nehalem,
Sandy Bridge and Sandy Bridge-EP, applied on top of current tip.
The code is based on Lin Ming's old patches.

For Nehalem and Sandy Bridge-EP, A few general events are exported
under directory:
/sys/bus/event_source/devices/${uncore_dev}/events/

Each file in the events directory defines an event. The content is
like:
config=1,config1=2

You can use 'perf stat' to access to the uncore pmu. For example:
perf stat -a -C 0 -e 'uncore_imc0/CAS_COUNT_RD/' sleep 1

Any comment is appreciated.
Thank you
---
Changes since v1:
- Modify perf tool to parse events from sysfs
- A few minor code cleanup

Changes since v2:
- Place all events for a particular socket onto a single cpu
- Make the events parser in perf tool reentrantable
- A few code cleanup