nvidia-tegra-modules.git/include/linux/platform/tegra/t19x-cpuidle.h, branch rtss22-ae NVIDIA's kernel modules to support tegra chips (used in Jetson boards) t19x: cpuidle: c6 exit latency measurement 2018-07-24T07:54:38+00:00 Sanjay Chandrashekara sanjayc@nvidia.com 2018-06-21T23:15:49+00:00 27c214726d8d5e76cece3deda271003090ad2c03 Add support to measure C6 exit latency. This patch implements some of the helper functions required for this functionality. Measurement technique 1. Force cores 1 to 7 to enter C6 state. 2. Send an IPI from core 0 to wake all other cores 3. Measure exit latency based on trace printks 4. Check C6 entry count before and after "wfi" to make sure C6 was entered. JIRA: TPM-1217 Change-Id: I1d9943b09cf880631ad17f915bbf84959b899d2f Signed-off-by: Sanjay Chandrashekara <sanjayc@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1757458 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Add support to measure C6 exit latency. This patch implements some
of the helper functions required for this functionality.
Measurement technique
1. Force cores 1 to 7 to enter C6 state.
2. Send an IPI from core 0 to wake all other cores
3. Measure exit latency based on trace printks
4. Check C6 entry count before and after "wfi" to make sure C6 was
   entered.
   
JIRA: TPM-1217

Change-Id: I1d9943b09cf880631ad17f915bbf84959b899d2f
Signed-off-by: Sanjay Chandrashekara <sanjayc@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1757458
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>