lkml.org 
[lkml]   [2015]   [May]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/7] ARM CCI-500 PMU driver support
Date
From: "Suzuki K. Poulose" <suzuki.poulose@arm.com>

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.

Mark Salter (1):
drivers: CCI: fix used_mask init in validate_group()

Suzuki K. Poulose (6):
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 | 17 +
drivers/bus/arm-cci.c | 905 ++++++++++++++++++++-----
3 files changed, 756 insertions(+), 170 deletions(-)

--
1.7.9.5



\
 
 \ /
  Last update: 2015-05-05 14:21    [W:0.139 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site