diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-07-04 15:17:28 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2022-07-06 23:57:51 +0300 |
| commit | b9c2ae6cac403dee3195fda9eb28d8ee733b225b (patch) | |
| tree | 38d56940663d36c26d9b73db3901da36ebb04775 /drivers/soc/qcom/Kconfig | |
| parent | a7ee53e19b6234834acc8f27f8ddb64ef73eebdb (diff) | |
| download | linux-b9c2ae6cac403dee3195fda9eb28d8ee733b225b.tar.xz | |
soc: qcom: icc-bwmon: Add bandwidth monitoring driver
Bandwidth monitoring (BWMON) sits between various subsytems like CPU,
GPU, Last Level caches and memory subsystem. The BWMON can be
configured to monitor the data throuhput between memory and other
subsytems. The throughput is measured within specified sampling window
and is used to vote for corresponding interconnect bandwidth.
Current implementation brings support for BWMON v4, used for example on
SDM845 to measure bandwidth between CPU (gladiator_noc) and Last Level
Cache (memnoc). Usage of this BWMON allows to remove fixed bandwidth
votes from cpufreq (CPU nodes) thus achieve high memory throughput even
with lower CPU frequencies.
The driver was tested on SDM845.
Co-developed-by: Thara Gopinath <thara.gopinath@gmail.com>
Signed-off-by: Thara Gopinath <thara.gopinath@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220704121730.127925-3-krzysztof.kozlowski@linaro.org
Diffstat (limited to 'drivers/soc/qcom/Kconfig')
| -rw-r--r-- | drivers/soc/qcom/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index a750714d5714..c0a46633bed9 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -230,4 +230,19 @@ config QCOM_APR application processor and QDSP6. APR is used by audio driver to configure QDSP6 ASM, ADM and AFE modules. + +config QCOM_ICC_BWMON + tristate "QCOM Interconnect Bandwidth Monitor driver" + depends on ARCH_QCOM || COMPILE_TEST + select PM_OPP + help + Sets up driver monitoring bandwidth on various interconnects and + based on that voting for interconnect bandwidth, adjusting their + speed to current demand. + Current implementation brings support for BWMON v4, used for example + on SDM845 to measure bandwidth between CPU (gladiator_noc) and Last + Level Cache (memnoc). Usage of this BWMON allows to remove some of + the fixed bandwidth votes from cpufreq (CPU nodes) thus achieve high + memory throughput even with lower CPU frequencies. + endmenu |