nvidia-tegra-modules.git/drivers/cpuidle, branch gpu-paging NVIDIA's kernel modules to support tegra chips (used in Jetson boards) cpuidle: t19x: remove unused debugfs nodes 2019-09-27T18:39:56+00:00 Aaron Tian atian@nvidia.com 2019-09-25T08:28:09+00:00 89a07773a0a61edad1c0d2b55be754788d2310d7 Remove unused debugfs nodes - deepest_cg_state - crossover_cc1_cg7 Bug 200525107 Change-Id: I6b4cac0ae2c8b9fd3f3300294a47900ada815c3c Signed-off-by: Aaron Tian <atian@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2205329 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Krishna Sitaraman <ksitaraman@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Remove unused debugfs nodes
- deepest_cg_state
- crossover_cc1_cg7

Bug 200525107

Change-Id: I6b4cac0ae2c8b9fd3f3300294a47900ada815c3c
Signed-off-by: Aaron Tian <atian@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2205329
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Krishna Sitaraman <ksitaraman@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
cpuidle: obtain wake_time properly for k4.14 2018-08-26T14:26:10+00:00 Bo Yan byan@nvidia.com 2018-08-20T23:47:48+00:00 66790ae185fbe424952639d0af3133719a49912c tick_nohz_get_sleep_length recomputes ts->timers_expired and ts->timer_expires_base and ts->timer_expires. To fix this, just pass target_residency plus a fixed offset. There is no need for precise sleep time, as long as a reasonable estimate is sent over. In addition, remove some other dead code. Bug 200412723 Bug 2337810 Change-Id: Ia015422e0ffd876ade124eea5a99f6e38bb9128b Signed-off-by: Bo Yan <byan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1803435 GVS: Gerrit_Virtual_Submit Reviewed-by: Sanjay Chandrashekara <sanjayc@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
tick_nohz_get_sleep_length recomputes ts->timers_expired
and ts->timer_expires_base and ts->timer_expires.

To fix this, just pass target_residency plus a fixed offset.
There is no need for precise sleep time, as long as a
reasonable estimate is sent over.

In addition, remove some other dead code.

Bug 200412723
Bug 2337810

Change-Id: Ia015422e0ffd876ade124eea5a99f6e38bb9128b
Signed-off-by: Bo Yan <byan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803435
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sanjay Chandrashekara <sanjayc@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
t19x: cpuidle: fix static code warnings 2018-08-23T19:04:39+00:00 Sanjay Chandrashekara sanjayc@nvidia.com 2018-08-20T23:02:38+00:00 cd37552113386637796f6ef825ee319dcff92836 The atomic variable entered_c6_cpu_count is declared and used in the same file and hence should be static. This fixes the kernel sparse warning warning: symbol 'entered_c6_cpu_count' was not declared; should it made static? Bug 200408168 Change-Id: Ib4d7bcc76da6e2ec799d4b29b87b15b189cbf961 Signed-off-by: Sanjay Chandrashekara <sanjayc@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1803421 Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
The atomic variable entered_c6_cpu_count is declared and used in
the same file and hence should be static. This fixes the kernel sparse
warning 
warning: symbol 'entered_c6_cpu_count' was not declared; should it made
static?

Bug 200408168

Change-Id: Ib4d7bcc76da6e2ec799d4b29b87b15b189cbf961
Signed-off-by: Sanjay Chandrashekara <sanjayc@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803421
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
cpuidle: t186: remove dead code 2018-08-21T21:55:17+00:00 Bo Yan byan@nvidia.com 2018-08-20T22:08:22+00:00 3987f881c2431852b84bbbd12bc09f45ba35b1f9 The wake time is only used in MCE and MTS interface. Remove its references in other places. In addition, remove the unnecessary kernel version check when printing ktime_t variables by converting ktime_t to ns first. Bug 200412723 Bug 2337810 Change-Id: I72a96e03bd2e57483461b0c533353844f08ad959 Signed-off-by: Bo Yan <byan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1803384 GVS: Gerrit_Virtual_Submit Reviewed-by: Rohit Khanna <rokhanna@nvidia.com> Reviewed-by: Vignesh Radhakrishnan <vigneshr@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
The wake time is only used in MCE and MTS interface. Remove its
references in other places. In addition, remove the unnecessary kernel
version check when printing ktime_t variables by converting ktime_t to
ns first.

Bug 200412723
Bug 2337810

Change-Id: I72a96e03bd2e57483461b0c533353844f08ad959
Signed-off-by: Bo Yan <byan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803384
GVS: Gerrit_Virtual_Submit
Reviewed-by: Rohit Khanna <rokhanna@nvidia.com>
Reviewed-by: Vignesh Radhakrishnan <vigneshr@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
cpuidle: t19x: remove dead code 2018-08-20T19:01:32+00:00 Bo Yan byan@nvidia.com 2018-08-18T00:23:04+00:00 3554fbe953f465d92efb41260818efc0a9d3a73a The tick_nohz_get_sleep_length can not be called from cpuidle driver in newer kernel, because it will update timer_expires_base and timer_expires variables in tick_sched. This is causing problems in tick handling code. Bug 200412723 Change-Id: I51269256ed70e07a82818f48fb332da51939e2c4 Signed-off-by: Bo Yan <byan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1802165 Reviewed-by: Rohit Khanna <rokhanna@nvidia.com> Reviewed-by: Vignesh Radhakrishnan <vigneshr@nvidia.com> 
The tick_nohz_get_sleep_length can not be called from cpuidle
driver in newer kernel, because it will update timer_expires_base
and timer_expires variables in tick_sched. This is causing problems
in tick handling code.

Bug 200412723

Change-Id: I51269256ed70e07a82818f48fb332da51939e2c4
Signed-off-by: Bo Yan <byan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1802165
Reviewed-by: Rohit Khanna <rokhanna@nvidia.com>
Reviewed-by: Vignesh Radhakrishnan <vigneshr@nvidia.com>
nvidia: cpuidle: fix tick_nohz_get_sleep_length for K4.14 2018-08-16T12:44:23+00:00 Sachin Nikam snikam@nvidia.com 2018-08-02T09:42:40+00:00 ce1e92d1c8f43645d862c074b89a873696dd25f7 In K4.14 tick_nohz_get_sleep_length() added a parameter. Fixed the compilation error with putting kernel version check. Bug 200412723 Change-Id: I6b38789c0b2d50421e8d1e354ae1f0e084c18354 Signed-off-by: Sachin Nikam <snikam@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1791060 GVS: Gerrit_Virtual_Submit Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
In K4.14 tick_nohz_get_sleep_length() added a parameter.
Fixed the compilation error with putting kernel version check.

Bug 200412723

Change-Id: I6b38789c0b2d50421e8d1e354ae1f0e084c18354
Signed-off-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1791060
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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>
drivers: cpuidle: fix read permission for cpuidle 2018-07-20T09:33:49+00:00 Jeetesh Burman jburman@nvidia.com 2018-07-19T11:27:18+00:00 95f02a2990dd4a7c9e76a235ab30550ab3382429 While running "sudo nvidia-bug-report-tegra.sh" on Galen, below errors observed and similar issue observed in T186: cat: /sys/kernel/debug/tegra_cpuidle/crossover_c1_c6: Permission denied cat: /sys/kernel/debug/tegra_cpuidle/crossover_cc1_cc6: Permission denied cat: /sys/kernel/debug/tegra_cpuidle/crossover_cc1_cg7: Permission denied cat: /sys/kernel/debug/tegra_cpuidle/forced_idle_duration_us: Permission denied cat: /sys/kernel/debug/tegra_cpuidle/testmode: Permission denied To fix make above attributes, change permission to WRITE permission only and remove READ permission for above file for T194 and similar file for T186. Bug 200431878 Change-Id: I0233e8805d7a2706f9d1dc77a4a35fc60ba946ba Signed-off-by: Jeetesh Burman <jburman@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1781667 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
While running "sudo nvidia-bug-report-tegra.sh" on Galen, below errors
observed and similar issue observed in T186:

cat: /sys/kernel/debug/tegra_cpuidle/crossover_c1_c6: Permission denied
cat: /sys/kernel/debug/tegra_cpuidle/crossover_cc1_cc6: Permission denied
cat: /sys/kernel/debug/tegra_cpuidle/crossover_cc1_cg7: Permission denied
cat: /sys/kernel/debug/tegra_cpuidle/forced_idle_duration_us: Permission denied
cat: /sys/kernel/debug/tegra_cpuidle/testmode: Permission denied

To fix make above attributes, change permission to WRITE permission only
and remove READ permission for above file for T194 and similar file for
T186.

Bug 200431878

Change-Id: I0233e8805d7a2706f9d1dc77a4a35fc60ba946ba
Signed-off-by: Jeetesh Burman <jburman@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1781667
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
cpuidle: Add config for t186 2018-07-10T21:27:22+00:00 Timo Alho talho@nvidia.com 2018-07-06T06:21:43+00:00 2a23885bed6d87fd8d1ee7d853c2811d3b706d51 Add Kconfig support for t186 cpuidle Bug 2196214 Change-Id: I36c7f335f1c7d21903fbb78eb06b47c750806aaf Signed-off-by: Timo Alho <talho@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1772374 GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Add Kconfig support for t186 cpuidle

Bug 2196214

Change-Id: I36c7f335f1c7d21903fbb78eb06b47c750806aaf
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1772374
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
cpuidle: tegra: use hotplug state callbacks 2018-07-10T21:27:18+00:00 Timo Alho talho@nvidia.com 2018-07-06T06:18:05+00:00 3baee09fc4638332bc23de1513f83e44c513de15 Recent kernel versions deprecated CPU hotplug notifier chains in favor of hotplug state callbacks. Adapt t18x cpuidle driver to this new interface. While at it, update some ktime_t related prints to work on kernel version > 4.9. Bug 2196214 Change-Id: I57ccd531840cb2d1599f6c0b5067811160732727 Signed-off-by: Timo Alho <talho@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1772373 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> 
Recent kernel versions deprecated CPU hotplug notifier chains in favor
of hotplug state callbacks. Adapt t18x cpuidle driver to this new
interface.

While at it, update some ktime_t related prints to work on kernel
version > 4.9.

Bug 2196214

Change-Id: I57ccd531840cb2d1599f6c0b5067811160732727
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1772373
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>