Messages in this thread - First message in thread
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- "Yan, Zheng"
- Peter Zijlstra
- Peter Zijlstra
- Stephane Eranian
| | | From | "Yan, Zheng" <> | Subject | [PATCH V6 0/13] perf: Intel uncore pmu counting support | Date | Fri, 15 Jun 2012 14:31:29 +0800 |
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Hi, all
Here is the V6 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 sysfs directory: /sys/bus/event_source/devices/${uncore_dev}/events/
Each file in the events directory defines an event. The content is a string such as: config=1,config1=2
You can use 'perf stat' to access to the uncore pmu. For example: perf stat -a -C 0 -e 'uncore_imc_0/CAS_COUNT_RD/' sleep 1 perf stat -a -C 0 -e 'uncore_imc_0/event=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
Changes since v3: - Use per cpu pointer to track uncore box - Rework the cpu hotplug code because topology_physical_package_id() return wrong result when the cpu is offline - Rework the event alias code, event terms are stored in the alias structure instead events string
Changes since v4: - Include Jiri's uncore related changes patch set - Add pmu/event=alias/ syntax support
Changes since v5: - All lower case letters for uncore pmu name - Make event alias case insensitive
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