Messages in this thread | | | From | "Suzuki K. Poulose" <> | Subject | [PATCH 0/7] ARM CCI PMU updates for 4.2 | Date | Tue, 26 May 2015 10:53:09 +0100 |
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From: "Suzuki K. Poulose" <suzuki.poulose@arm.com>
Hi,
Here is the series which adds support for the CCI-500 PMU. Could you please apply this for 4.2 ?
Please let me know if you need a pull request, I could ask Will to setup one.
--- This series adds the support for CCI-500 PMU, by reusing and rearranging the CCI-400 PMU driver code.
CCI-500 (the new Cache Coherent Interconnect IP) has a PMU with 8 independent event counters and supports profiling events related to master/slave interfaces along with the global events(cci internal events).
The series also adds aliases for events for all the supported CCI PMUs(CCI_400{r0,r1}, CCI_500).
Patches 1/7 is a fix posted by Mark Salter, which has been posted to arm@kernel.org already. I have included it in this series, as this series applies on top of it.
Patches 2-5 - Creates an abstraction of a CCI PMU and makes the CCI-400 driver code to make use of the abstraction. Patch 6 - Adds the CCI-500 PMU driver support Patch 7 - Adds the aliases for CCI PMU events (specific to chipsets).
With the series, one can use named events for the CCI pmus.
e.g, CCI-400
# perf list | grep CCI CCI_400/cycles/ [Kernel PMU event] CCI_400/mi_retry_speculative_fetch,source=?/ [Kernel PMU event]
e.g, CCI-500
# perf list |grep CCI CCI_500/cci_rq_stall_address_hazard/ [Kernel PMU event] CCI_500/cci_snoop_access_filter_bank_0_1/ [Kernel PMU event]
Testing was performed on a fast model, with perf fuzzer and functional tests for the CCI-500 PMU. --- Changes since V1: https://lkml.org/lkml/2015/5/5/323
The series remains functionaly pretty much the same, except for a minor fix in the Kconfig default for CCI-500. - Pulled in a CCI-400 config fix posted separately, as Patch 1/7. https://patchwork.kernel.org/patch/6387121/ - Add the similar Kconfig changes for CCI-500 as fixed in the patch above. - Dropped Mark Salter's fix for CCI, which is now queued.
Suzuki K. Poulose (7): arm-cci: Do not enable CCI-400 PMU by default arm-cci: Cleanup PMU driver code arm-cci: Abstract out the PMU counter details arm-cci: Abstract handling for CCI events arm-cci: Sanitise CCI400 PMU driver specific code arm-cci: Add CCI-500 PMU support arm-cci: Add aliases for PMU events
Documentation/devicetree/bindings/arm/cci.txt | 4 +- drivers/bus/Kconfig | 31 +- drivers/bus/arm-cci.c | 905 ++++++++++++++++++++----- 3 files changed, 763 insertions(+), 177 deletions(-)
-- 1.7.9.5
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