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8e0484d2 |
| 03-Jun-2015 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: governor: register notifier from cs_init() Notifiers are required only for conservative governor and the common governor code is unnecessarily polluted with that. Handle that fr
cpufreq: governor: register notifier from cs_init() Notifiers are required only for conservative governor and the common governor code is unnecessarily polluted with that. Handle that from cs_init/exit() instead of cpufreq_governor_dbs(). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v4.1-rc6, v4.1-rc5, v4.1-rc4, v4.1-rc3, v4.1-rc2, v4.1-rc1, v4.0, v4.0-rc7, v4.0-rc6, v4.0-rc5, v4.0-rc4, v4.0-rc3, v4.0-rc2, v4.0-rc1, v3.19, v3.19-rc7, v3.19-rc6, v3.19-rc5, v3.19-rc4, v3.19-rc3, v3.19-rc2, v3.19-rc1, v3.18, v3.18-rc7, v3.18-rc6, v3.18-rc5, v3.18-rc4, v3.18-rc3, v3.18-rc2, v3.18-rc1, v3.17, v3.17-rc7, v3.17-rc6, v3.17-rc5, v3.17-rc4, v3.17-rc3, v3.17-rc2, v3.17-rc1, v3.16, v3.16-rc7, v3.16-rc6, v3.16-rc5, v3.16-rc4, v3.16-rc3, v3.16-rc2, v3.16-rc1, v3.15, v3.15-rc8, v3.15-rc7, v3.15-rc6, v3.15-rc5, v3.15-rc4, v3.15-rc3, v3.15-rc2, v3.15-rc1, v3.14, v3.14-rc8, v3.14-rc7, v3.14-rc6, v3.14-rc5, v3.14-rc4, v3.14-rc3, v3.14-rc2, v3.14-rc1, v3.13, v3.13-rc8, v3.13-rc7, v3.13-rc6, v3.13-rc5, v3.13-rc4, v3.13-rc3, v3.13-rc2, v3.13-rc1 |
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#
6d7bcb14 |
| 07-Nov-2013 |
Xiaoguang Chen <chenxg@marvell.com> |
cpufreq: conservative: set requested_freq to policy max when it is over policy max When requested_freq is over policy->max, set it to policy->max. This can help to speed up decreasing fr
cpufreq: conservative: set requested_freq to policy max when it is over policy max When requested_freq is over policy->max, set it to policy->max. This can help to speed up decreasing frequency. Signed-off-by: Xiaoguang Chen <chenxg@marvell.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
3baa976a |
| 06-Nov-2013 |
Xiaoguang Chen <chenxg@marvell.com> |
cpufreq: conservative: fix requested_freq reduction issue When decreasing frequency, requested_freq may be less than freq_target, So requested_freq minus freq_target may be negative,
cpufreq: conservative: fix requested_freq reduction issue When decreasing frequency, requested_freq may be less than freq_target, So requested_freq minus freq_target may be negative, But reqested_freq's unit is unsigned int, then the negative result will be one larger interger which may be even higher than requested_freq. This patch is to fix such issue. when result becomes negative, set requested_freq as the min value of policy. Signed-off-by: Xiaoguang Chen <chenxg@marvell.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.12, v3.12-rc7, v3.12-rc6, v3.12-rc5, v3.12-rc4, v3.12-rc3, v3.12-rc2, v3.12-rc1, v3.11 |
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#
934dac1e |
| 26-Aug-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: governors: Remove duplicate check of target freq in supported range Function __cpufreq_driver_target() checks if target_freq is within policy->min and policy->max range. generic
cpufreq: governors: Remove duplicate check of target freq in supported range Function __cpufreq_driver_target() checks if target_freq is within policy->min and policy->max range. generic_powersave_bias_target() also checks if target_freq is valid via a cpufreq_frequency_table_target() call. So, drop the unnecessary duplicate check in *_check_cpu(). Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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c49a089c |
| 14-Aug-2013 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge back earlier 'pm-cpufreq' material
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Revision tags: v3.11-rc7, v3.11-rc6, v3.11-rc5 |
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d5b73cd8 |
| 06-Aug-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: Use sizeof(*ptr) convetion for computing sizes Chapter 14 of Documentation/CodingStyle says: The preferred form for passing a size of a struct is the following:
cpufreq: Use sizeof(*ptr) convetion for computing sizes Chapter 14 of Documentation/CodingStyle says: The preferred form for passing a size of a struct is the following: p = kmalloc(sizeof(*p), ...); The alternative form where struct name is spelled out hurts readability and introduces an opportunity for a bug when the pointer variable type is changed but the corresponding sizeof that is passed to a memory allocator is not. This wasn't followed consistently in drivers/cpufreq, let's make it more consistent by always following this rule. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
5ff0a268 |
| 06-Aug-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: Clean up header files included in the core This patch addresses the following issues in the header files in the cpufreq core: - Include headers in ascending order, so that
cpufreq: Clean up header files included in the core This patch addresses the following issues in the header files in the cpufreq core: - Include headers in ascending order, so that we don't add same many times by mistake. - <asm/> must be included after <linux/>, so that they override whatever they need to. - Remove unnecessary includes. - Don't include files already included by cpufreq.h or cpufreq_governor.h. [rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
6c4640c3 |
| 05-Aug-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: rename ignore_nice as ignore_nice_load This sysfs file was called ignore_nice_load earlier and commit 4d5dcc4 (cpufreq: governor: Implement per policy instances of governors
cpufreq: rename ignore_nice as ignore_nice_load This sysfs file was called ignore_nice_load earlier and commit 4d5dcc4 (cpufreq: governor: Implement per policy instances of governors) changed its name to ignore_nice by mistake. Lets get it renamed back to its original name. Reported-by: Martin von Gagern <Martin.vGagern@gmx.net> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 3.10+ <stable@vger.kernel.org> # 3.10+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.11-rc4, v3.11-rc3, v3.11-rc2, v3.11-rc1, v3.10, v3.10-rc7, v3.10-rc6, v3.10-rc5, v3.10-rc4, v3.10-rc3, v3.10-rc2, v3.10-rc1, v3.9, v3.9-rc8, v3.9-rc7, v3.9-rc6, v3.9-rc5, v3.9-rc4 |
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#
98765847 |
| 22-Mar-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: conservative: Use an inline function to evaluate freq_target Use an inline function to evaluate freq_target to avoid duplicate code. Also, define a macro for the default fr
cpufreq: conservative: Use an inline function to evaluate freq_target Use an inline function to evaluate freq_target to avoid duplicate code. Also, define a macro for the default frequency step. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.9-rc3, v3.9-rc2 |
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#
27ed3cd2 |
| 05-Mar-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: conservative: Fix the logic in frequency decrease checking When we evaluate the CPU load for frequency decrease we have to compare the load against down_threshold. There is no n
cpufreq: conservative: Fix the logic in frequency decrease checking When we evaluate the CPU load for frequency decrease we have to compare the load against down_threshold. There is no need to subtract 10 points from down_threshold. Instead, we have to use the default down_threshold or user's selection unmodified. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
7af1c056 |
| 05-Mar-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: conservative: Fix sampling_down_factor functionality sampling_down_factor tunable is unused since commit 8e677ce83bf41ba9c74e5b6d9ee60b07d4e5ed93 (4 years ago). This pa
cpufreq: conservative: Fix sampling_down_factor functionality sampling_down_factor tunable is unused since commit 8e677ce83bf41ba9c74e5b6d9ee60b07d4e5ed93 (4 years ago). This patch restores the original functionality and documents the tunable. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.9-rc1 |
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#
9366d840 |
| 28-Feb-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: governors: Calculate iowait time only when necessary Currently we always calculate the CPU iowait time and add it to idle time. If we are in ondemand and we use io_is_busy, we r
cpufreq: governors: Calculate iowait time only when necessary Currently we always calculate the CPU iowait time and add it to idle time. If we are in ondemand and we use io_is_busy, we re-calculate iowait time and we subtract it from idle time. With this patch iowait time is calculated only when necessary avoiding the double call to get_cpu_iowait_time_us. We use a parameter in function get_cpu_idle_time to distinguish when the iowait time will be added to idle time or not, without the need of keeping the prev_io_wait. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.,org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
fed573d5 |
| 27-Feb-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
cpufreq: conservative: Fix relation when decreasing frequency The relation should be CPUFREQ_RELATION_L to find optimal frequency when decreasing. Signed-off-by: Namhyung Kim <n
cpufreq: conservative: Fix relation when decreasing frequency The relation should be CPUFREQ_RELATION_L to find optimal frequency when decreasing. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
ad529a9c |
| 27-Feb-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
cpufreq: conservative: Break out earlier on the lowest frequency If we're on the lowest frequency, no need to calculate new freq. Break out even earlier in this case. Signed-off
cpufreq: conservative: Break out earlier on the lowest frequency If we're on the lowest frequency, no need to calculate new freq. Break out even earlier in this case. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
031299b3 |
| 27-Feb-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: governors: Avoid unnecessary per cpu timer interrupts Following patch has introduced per cpu timers or works for ondemand and conservative governors. commit 2ab
cpufreq: governors: Avoid unnecessary per cpu timer interrupts Following patch has introduced per cpu timers or works for ondemand and conservative governors. commit 2abfa876f1117b0ab45f191fb1f82c41b1cbc8fe Author: Rickard Andersson <rickard.andersson@stericsson.com> Date: Thu Dec 27 14:55:38 2012 +0000 cpufreq: handle SW coordinated CPUs This causes additional unnecessary interrupts on all cpus when the load is recently evaluated by any other cpu. i.e. When load is recently evaluated by cpu x, we don't really need any other cpu to evaluate this load again for the next sampling_rate time. Some sort of code is present to avoid that but we are still getting timer interrupts for all cpus. A good way of avoiding this would be to modify delays for all cpus (policy->cpus) whenever any cpu has evaluated load. This patch does this change and some related code cleanup. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
4d5dcc42 |
| 27-Mar-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: governor: Implement per policy instances of governors Currently, there can't be multiple instances of single governor_type. If we have a multi-package system, where we have mult
cpufreq: governor: Implement per policy instances of governors Currently, there can't be multiple instances of single governor_type. If we have a multi-package system, where we have multiple instances of struct policy (per package), we can't have multiple instances of same governor. i.e. We can't have multiple instances of ondemand governor for multiple packages. Governors directory in sysfs is created at /sys/devices/system/cpu/cpufreq/ governor-name/. Which again reflects that there can be only one instance of a governor_type in the system. This is a bottleneck for multicluster system, where we want different packages to use same governor type, but with different tunables. This patch uses the infrastructure provided by earlier patch and implements init/exit routines for ondemand and conservative governors. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.8, v3.8-rc7 |
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#
c88883cd |
| 08-Feb-2013 |
Stratos Karafotis <stratosk@semaphore.gr> |
cpufreq: conservative: Fix typos in comments Fix a couple of typos in comments. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@lin
cpufreq: conservative: Fix typos in comments Fix a couple of typos in comments. Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.8-rc6 |
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#
4447266b |
| 31-Jan-2013 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: governors: Remove code redundancy between governors With the inclusion of following patches: 9f4eb10 cpufreq: conservative: call dbs_check_cpu only when necessary 772b4
cpufreq: governors: Remove code redundancy between governors With the inclusion of following patches: 9f4eb10 cpufreq: conservative: call dbs_check_cpu only when necessary 772b4b1 cpufreq: ondemand: call dbs_check_cpu only when necessary code redundancy between the conservative and ondemand governors is introduced again, so get rid of it. [rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
09dca5ae |
| 31-Jan-2013 |
Fabio Baltieri <fabio.baltieri@linaro.org> |
cpufreq: governors: fix misuse of cdbs.cpu Fix governors code to set all cpu's cdbs->cpu to the the actual cpu id and use cur_policy->cpu istead of cdbs->cpu to track current governor's
cpufreq: governors: fix misuse of cdbs.cpu Fix governors code to set all cpu's cdbs->cpu to the the actual cpu id and use cur_policy->cpu istead of cdbs->cpu to track current governor's leader cpu. Reported-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
2624f90c |
| 31-Jan-2013 |
Fabio Baltieri <fabio.baltieri@linaro.org> |
cpufreq: governors: implement generic policy_is_shared Implement a generic helper function policy_is_shared() to replace the current dbs_sw_coordinated_cpus() at cpufreq level, so that i
cpufreq: governors: implement generic policy_is_shared Implement a generic helper function policy_is_shared() to replace the current dbs_sw_coordinated_cpus() at cpufreq level, so that it can be used by code other than cpufreq governors. Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.8-rc5, v3.8-rc4, v3.8-rc3, v3.8-rc2 |
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#
66df2a01 |
| 27-Dec-2012 |
Fabio Baltieri <fabio.baltieri@linaro.org> |
cpufreq: conservative: call dbs_check_cpu only when necessary Modify conservative timer to not resample CPU utilization if recently sampled from another SW coordinated core. Sig
cpufreq: conservative: call dbs_check_cpu only when necessary Modify conservative timer to not resample CPU utilization if recently sampled from another SW coordinated core. Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
2abfa876 |
| 27-Dec-2012 |
Rickard Andersson <rickard.andersson@stericsson.com> |
cpufreq: handle SW coordinated CPUs This patch fixes a bug that occurred when we had load on a secondary CPU and the primary CPU was sleeping. Only one sampling timer was spawned and
cpufreq: handle SW coordinated CPUs This patch fixes a bug that occurred when we had load on a secondary CPU and the primary CPU was sleeping. Only one sampling timer was spawned and it was spawned as a deferred timer on the primary CPU, so when a secondary CPU had a change in load this was not detected by the cpufreq governor (both ondemand and conservative). This patch make sure that deferred timers are run on all CPUs in the case of software controlled CPUs that run on the same frequency. Signed-off-by: Rickard Andersson <rickard.andersson@stericsson.com> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revision tags: v3.8-rc1, v3.7, v3.7-rc8, v3.7-rc7, v3.7-rc6, v3.7-rc5, v3.7-rc4, v3.7-rc3 |
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#
4471a34f |
| 25-Oct-2012 |
Viresh Kumar <viresh.kumar@linaro.org> |
cpufreq: governors: remove redundant code Initially ondemand governor was written and then using its code conservative governor is written. It used a lot of code from ondemand governor,
cpufreq: governors: remove redundant code Initially ondemand governor was written and then using its code conservative governor is written. It used a lot of code from ondemand governor, but copy of code was created instead of using the same routines from both governors. Which increased code redundancy, which is difficult to manage. This patch is an attempt to move common part of both the governors to cpufreq_governor.c file to come over above mentioned issues. This shouldn't change anything from functionality point of view. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
2aacdfff |
| 22-Oct-2012 |
viresh kumar <viresh.kumar@linaro.org> |
cpufreq: Move common part from governors to separate file, v2 Multiple cpufreq governers have defined similar get_cpu_idle_time_***() routines. These routines must be moved to some commo
cpufreq: Move common part from governors to separate file, v2 Multiple cpufreq governers have defined similar get_cpu_idle_time_***() routines. These routines must be moved to some common place, so that all governors can use them. So moving them to cpufreq_governor.c, which seems to be a better place for keeping these routines. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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#
16642a2e |
| 02-Oct-2012 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael J Wysocki: - Improved system suspend/resume an
Merge tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael J Wysocki: - Improved system suspend/resume and runtime PM handling for the SH TMU, CMT and MTU2 clock event devices (also used by ARM/shmobile). - Generic PM domains framework extensions related to cpuidle support and domain objects lookup using names. - ARM/shmobile power management updates including improved support for the SH7372's A4S power domain containing the CPU core. - cpufreq changes related to AMD CPUs support from Matthew Garrett, Andre Przywara and Borislav Petkov. - cpu0 cpufreq driver from Shawn Guo. - cpufreq governor fixes related to the relaxing of limit from Michal Pecio. - OMAP cpufreq updates from Axel Lin and Richard Zhao. - cpuidle ladder governor fixes related to the disabling of states from Carsten Emde and me. - Runtime PM core updates related to the interactions with the system suspend core from Alan Stern and Kevin Hilman. - Wakeup sources modification allowing more helper functions to be called from interrupt context from John Stultz and additional diagnostic code from Todd Poynor. - System suspend error code path fix from Feng Hong. Fixed up conflicts in cpufreq/powernow-k8 that stemmed from the workqueue fixes conflicting fairly badly with the removal of support for hardware P-state chips. The changes were independent but somewhat intertwined. * tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits) Revert "PM QoS: Use spinlock in the per-device PM QoS constraints code" PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2 cpuidle: rename function name "__cpuidle_register_driver", v2 cpufreq: OMAP: Check IS_ERR() instead of NULL for omap_device_get_by_hwmod_name cpuidle: remove some empty lines PM: Prevent runtime suspend during system resume PM QoS: Use spinlock in the per-device PM QoS constraints code PM / Sleep: use resume event when call dpm_resume_early cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure ACPI / processor: remove pointless variable initialization ACPI / processor: remove unused function parameter cpufreq: OMAP: remove loops_per_jiffy recalculate for smp sections: fix section conflicts in drivers/cpufreq cpufreq: conservative: update frequency when limits are relaxed cpufreq / ondemand: update frequency when limits are relaxed properly __init-annotate pm_sysrq_init() cpufreq: Add a generic cpufreq-cpu0 driver PM / OPP: Initialize OPP table from device tree ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp cpufreq: Remove support for hardware P-state chips from powernow-k8 ...
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