zheng.z.yan at intel
May 1, 2012, 7:07 PM
Post #1 of 1
(37 views)
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[PATCH V3 0/9] perf: Intel uncore pmu counting support
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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
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