<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/include/linux/pm.h, branch v6.14-rc2</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge tag 'pm-6.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm</title>
<updated>2025-01-30T23:10:34+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-01-30T23:10:34+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=f55b0671e3f90824ac06dc06b988075eb9c6830c'/>
<id>f55b0671e3f90824ac06dc06b988075eb9c6830c</id>
<content type='text'>
Pull more power management updates from Rafael Wysocki:
 "These are mostly fixes on top of the previously merged power
  management material with the addition of some teo cpuidle governor
  updates, some of which may also be regarded as fixes:

   - Add missing error handling for syscore_suspend() to the hibernation
     core code (Wentao Liang)

   - Revert a commit that added unused macros (Andy Shevchenko)

   - Synchronize the runtime PM status of devices that were runtime-
     suspended before a system-wide suspend and need to be resumed
     during the subsequent system-wide resume transition (Rafael
     Wysocki)

   - Clean up the teo cpuidle governor and make the handling of short
     idle intervals in it consistent regardless of the properties of
     idle states supplied by the cpuidle driver (Rafael Wysocki)

   - Fix some boost-related issues in cpufreq (Lifeng Zheng)

   - Fix build issues in the s3c64xx and airoha cpufreq drivers (Viresh
     Kumar)

   - Remove unconditional binding of schedutil governor kthreads to the
     affected CPUs if the cpufreq driver indicates that updates can
     happen from any CPU (Christian Loehle)"

* tag 'pm-6.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: sleep: core: Synchronize runtime PM status of parents and children
  cpufreq: airoha: Depends on OF
  PM: Revert "Add EXPORT macros for exporting PM functions"
  PM: hibernate: Add error handling for syscore_suspend()
  cpufreq/schedutil: Only bind threads if needed
  cpufreq: ACPI: Remove set_boost in acpi_cpufreq_cpu_init()
  cpufreq: CPPC: Fix wrong max_freq in policy initialization
  cpufreq: Introduce a more generic way to set default per-policy boost flag
  cpufreq: Fix re-boost issue after hotplugging a CPU
  cpufreq: s3c64xx: Fix compilation warning
  cpuidle: teo: Skip sleep length computation for low latency constraints
  cpuidle: teo: Replace time_span_ns with a flag
  cpuidle: teo: Simplify handling of total events count
  cpuidle: teo: Skip getting the sleep length if wakeups are very frequent
  cpuidle: teo: Simplify counting events used for tick management
  cpuidle: teo: Clarify two code comments
  cpuidle: teo: Drop local variable prev_intercept_idx
  cpuidle: teo: Combine candidate state index checks against 0
  cpuidle: teo: Reorder candidate state index checks
  cpuidle: teo: Rearrange idle state lookup code
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull more power management updates from Rafael Wysocki:
 "These are mostly fixes on top of the previously merged power
  management material with the addition of some teo cpuidle governor
  updates, some of which may also be regarded as fixes:

   - Add missing error handling for syscore_suspend() to the hibernation
     core code (Wentao Liang)

   - Revert a commit that added unused macros (Andy Shevchenko)

   - Synchronize the runtime PM status of devices that were runtime-
     suspended before a system-wide suspend and need to be resumed
     during the subsequent system-wide resume transition (Rafael
     Wysocki)

   - Clean up the teo cpuidle governor and make the handling of short
     idle intervals in it consistent regardless of the properties of
     idle states supplied by the cpuidle driver (Rafael Wysocki)

   - Fix some boost-related issues in cpufreq (Lifeng Zheng)

   - Fix build issues in the s3c64xx and airoha cpufreq drivers (Viresh
     Kumar)

   - Remove unconditional binding of schedutil governor kthreads to the
     affected CPUs if the cpufreq driver indicates that updates can
     happen from any CPU (Christian Loehle)"

* tag 'pm-6.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: sleep: core: Synchronize runtime PM status of parents and children
  cpufreq: airoha: Depends on OF
  PM: Revert "Add EXPORT macros for exporting PM functions"
  PM: hibernate: Add error handling for syscore_suspend()
  cpufreq/schedutil: Only bind threads if needed
  cpufreq: ACPI: Remove set_boost in acpi_cpufreq_cpu_init()
  cpufreq: CPPC: Fix wrong max_freq in policy initialization
  cpufreq: Introduce a more generic way to set default per-policy boost flag
  cpufreq: Fix re-boost issue after hotplugging a CPU
  cpufreq: s3c64xx: Fix compilation warning
  cpuidle: teo: Skip sleep length computation for low latency constraints
  cpuidle: teo: Replace time_span_ns with a flag
  cpuidle: teo: Simplify handling of total events count
  cpuidle: teo: Skip getting the sleep length if wakeups are very frequent
  cpuidle: teo: Simplify counting events used for tick management
  cpuidle: teo: Clarify two code comments
  cpuidle: teo: Drop local variable prev_intercept_idx
  cpuidle: teo: Combine candidate state index checks against 0
  cpuidle: teo: Reorder candidate state index checks
  cpuidle: teo: Rearrange idle state lookup code
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: sleep: core: Synchronize runtime PM status of parents and children</title>
<updated>2025-01-29T10:50:33+00:00</updated>
<author>
<name>Rafael J. Wysocki</name>
<email>rafael.j.wysocki@intel.com</email>
</author>
<published>2025-01-28T19:24:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=3775fc538f535a7c5adaf11990c7932a0bd1f9eb'/>
<id>3775fc538f535a7c5adaf11990c7932a0bd1f9eb</id>
<content type='text'>
Commit 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the
resume phase") overlooked the case in which the parent of a device with
DPM_FLAG_SMART_SUSPEND set did not use that flag and could be runtime-
suspended before a transition into a system-wide sleep state.  In that
case, if the child is resumed during the subsequent transition from
that state into the working state, its runtime PM status will be set to
RPM_ACTIVE, but the runtime PM status of the parent will not be updated
accordingly, even though the parent will be resumed too, because of the
dev_pm_skip_suspend() check in device_resume_noirq().

Address this problem by tracking the need to set the runtime PM status
to RPM_ACTIVE during system-wide resume transitions for devices with
DPM_FLAG_SMART_SUSPEND set and all of the devices depended on by them.

Fixes: 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the resume phase")
Closes: https://lore.kernel.org/linux-pm/Z30p2Etwf3F2AUvD@hovoldconsulting.com/
Reported-by: Johan Hovold &lt;johan@kernel.org&gt;
Tested-by: Manivannan Sadhasivam &lt;manivannan.sadhasivam@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Johan Hovold &lt;johan+linaro@kernel.org&gt;
Tested-by: Johan Hovold &lt;johan+linaro@kernel.org&gt;
Link: https://patch.msgid.link/12619233.O9o76ZdvQC@rjwysocki.net
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Commit 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the
resume phase") overlooked the case in which the parent of a device with
DPM_FLAG_SMART_SUSPEND set did not use that flag and could be runtime-
suspended before a transition into a system-wide sleep state.  In that
case, if the child is resumed during the subsequent transition from
that state into the working state, its runtime PM status will be set to
RPM_ACTIVE, but the runtime PM status of the parent will not be updated
accordingly, even though the parent will be resumed too, because of the
dev_pm_skip_suspend() check in device_resume_noirq().

Address this problem by tracking the need to set the runtime PM status
to RPM_ACTIVE during system-wide resume transitions for devices with
DPM_FLAG_SMART_SUSPEND set and all of the devices depended on by them.

Fixes: 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the resume phase")
Closes: https://lore.kernel.org/linux-pm/Z30p2Etwf3F2AUvD@hovoldconsulting.com/
Reported-by: Johan Hovold &lt;johan@kernel.org&gt;
Tested-by: Manivannan Sadhasivam &lt;manivannan.sadhasivam@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Johan Hovold &lt;johan+linaro@kernel.org&gt;
Tested-by: Johan Hovold &lt;johan+linaro@kernel.org&gt;
Link: https://patch.msgid.link/12619233.O9o76ZdvQC@rjwysocki.net
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: Revert "Add EXPORT macros for exporting PM functions"</title>
<updated>2025-01-23T20:21:21+00:00</updated>
<author>
<name>Andy Shevchenko</name>
<email>andriy.shevchenko@linux.intel.com</email>
</author>
<published>2025-01-16T15:43:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=4891cd3eba62ac611a7929948cf5588a1abed909'/>
<id>4891cd3eba62ac611a7929948cf5588a1abed909</id>
<content type='text'>
Revert commit 41a337b40e98 ("Add EXPORT macros for exporting PM
functions") because the macros added by it are still unused almost
two years after they had been introduced.

Reported-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Link: https://patch.msgid.link/20250116154354.149297-1-andriy.shevchenko@linux.intel.com
[ rjw: New changelog ]
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Revert commit 41a337b40e98 ("Add EXPORT macros for exporting PM
functions") because the macros added by it are still unused almost
two years after they had been introduced.

Reported-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Link: https://patch.msgid.link/20250116154354.149297-1-andriy.shevchenko@linux.intel.com
[ rjw: New changelog ]
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: Fix the issue of task recovery failure caused by USB status when S4 wakes up</title>
<updated>2024-12-04T15:14:08+00:00</updated>
<author>
<name>Duan Chenghao</name>
<email>duanchenghao@kylinos.cn</email>
</author>
<published>2024-10-24T02:40:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d9b4067aef50aa7a13d1a9fbb4e35bdea6804ff3'/>
<id>d9b4067aef50aa7a13d1a9fbb4e35bdea6804ff3</id>
<content type='text'>
When a device is inserted into the USB port and an S4 wakeup is initiated,
after the USB-hub initialization is completed, it will automatically enter
suspend mode. Upon detecting a device on the USB port, it will proceed with
resume and set the hcd to the HCD_FLAG_WAKEUP_PENDING state. During the S4
wakeup process, peripherals are put into suspend mode, followed by task
recovery. However, upon detecting that the hcd is in the
HCD_FLAG_WAKEUP_PENDING state, it will return an EBUSY status, causing the
S4 suspend to fail and subsequent task recovery to not proceed.
-
[   27.594598][ 1]  PM: pci_pm_freeze(): hcd_pci_suspend+0x0/0x28 returns -16
[   27.594601][ 1]  PM: dpm_run_callback(): pci_pm_freeze+0x0/0x100 returns -16
[   27.603420][ 1]  ehci-pci 0000:00:04.1: pci_pm_freeze+0x0/0x100 returned 0 after 3 usecs
[   27.612233][ 1]  ehci-pci 0000:00:05.1: pci_pm_freeze+0x0/0x100 returned -16 after 17223 usecs
[   27.810067][ 1]  PM: Device 0000:00:05.1 failed to quiesce async: error -16
[   27.816988][ 1]  PM: quiesce of devices aborted after 1833.282 msecs
[   27.823302][ 1]  PM: start quiesce of devices aborted after 1839.975 msecs
......
[   31.303172][ 1]  PM: recover of devices complete after 3473.039 msecs
[   31.309818][ 1]  PM: Failed to load hibernation image, recovering.
[   31.348188][ 1]  PM: Basic memory bitmaps freed
[   31.352686][ 1]  OOM killer enabled.
[   31.356232][ 1]  Restarting tasks ... done.
[   31.360609][ 1]  PM: resume from hibernation failed (0)
[   31.365800][ 1]  PM: Hibernation image not present or could not be loaded.

The "do_wakeup" is determined based on whether the controller's
power/wakeup attribute is set. The current issue necessitates considering
the type of suspend that is occurring. If the suspend type is either
PM_EVENT_FREEZE or PM_EVENT_QUIESCE, then "do_wakeup" should be set to
false.

Reported-by: kernel test robot &lt;lkp@intel.com&gt;
Closes: https://lore.kernel.org/oe-kbuild-all/202410151722.rfjtknRz-lkp@intel.com/
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Duan Chenghao &lt;duanchenghao@kylinos.cn&gt;
Link: https://lore.kernel.org/r/20241024024038.26157-1-duanchenghao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
When a device is inserted into the USB port and an S4 wakeup is initiated,
after the USB-hub initialization is completed, it will automatically enter
suspend mode. Upon detecting a device on the USB port, it will proceed with
resume and set the hcd to the HCD_FLAG_WAKEUP_PENDING state. During the S4
wakeup process, peripherals are put into suspend mode, followed by task
recovery. However, upon detecting that the hcd is in the
HCD_FLAG_WAKEUP_PENDING state, it will return an EBUSY status, causing the
S4 suspend to fail and subsequent task recovery to not proceed.
-
[   27.594598][ 1]  PM: pci_pm_freeze(): hcd_pci_suspend+0x0/0x28 returns -16
[   27.594601][ 1]  PM: dpm_run_callback(): pci_pm_freeze+0x0/0x100 returns -16
[   27.603420][ 1]  ehci-pci 0000:00:04.1: pci_pm_freeze+0x0/0x100 returned 0 after 3 usecs
[   27.612233][ 1]  ehci-pci 0000:00:05.1: pci_pm_freeze+0x0/0x100 returned -16 after 17223 usecs
[   27.810067][ 1]  PM: Device 0000:00:05.1 failed to quiesce async: error -16
[   27.816988][ 1]  PM: quiesce of devices aborted after 1833.282 msecs
[   27.823302][ 1]  PM: start quiesce of devices aborted after 1839.975 msecs
......
[   31.303172][ 1]  PM: recover of devices complete after 3473.039 msecs
[   31.309818][ 1]  PM: Failed to load hibernation image, recovering.
[   31.348188][ 1]  PM: Basic memory bitmaps freed
[   31.352686][ 1]  OOM killer enabled.
[   31.356232][ 1]  Restarting tasks ... done.
[   31.360609][ 1]  PM: resume from hibernation failed (0)
[   31.365800][ 1]  PM: Hibernation image not present or could not be loaded.

The "do_wakeup" is determined based on whether the controller's
power/wakeup attribute is set. The current issue necessitates considering
the type of suspend that is occurring. If the suspend type is either
PM_EVENT_FREEZE or PM_EVENT_QUIESCE, then "do_wakeup" should be set to
false.

Reported-by: kernel test robot &lt;lkp@intel.com&gt;
Closes: https://lore.kernel.org/oe-kbuild-all/202410151722.rfjtknRz-lkp@intel.com/
Signed-off-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Duan Chenghao &lt;duanchenghao@kylinos.cn&gt;
Link: https://lore.kernel.org/r/20241024024038.26157-1-duanchenghao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>module: Convert symbol namespace to string literal</title>
<updated>2024-12-02T19:34:44+00:00</updated>
<author>
<name>Peter Zijlstra</name>
<email>peterz@infradead.org</email>
</author>
<published>2024-12-02T14:59:47+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=cdd30ebb1b9f36159d66f088b61aee264e649d7a'/>
<id>cdd30ebb1b9f36159d66f088b61aee264e649d7a</id>
<content type='text'>
Clean up the existing export namespace code along the same lines of
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.

Scripted using

  git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
  do
    awk -i inplace '
      /^#define EXPORT_SYMBOL_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /^#define MODULE_IMPORT_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /MODULE_IMPORT_NS/ {
        $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
      }
      /EXPORT_SYMBOL_NS/ {
        if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
  	if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &amp;&amp;
  	    $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &amp;&amp;
  	    $0 !~ /^my/) {
  	  getline line;
  	  gsub(/[[:space:]]*\\$/, "");
  	  gsub(/[[:space:]]/, "", line);
  	  $0 = $0 " " line;
  	}

  	$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
  		    "\\1(\\2, \"\\3\")", "g");
        }
      }
      { print }' $file;
  done

Requested-by: Masahiro Yamada &lt;masahiroy@kernel.org&gt;
Signed-off-by: Peter Zijlstra (Intel) &lt;peterz@infradead.org&gt;
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Clean up the existing export namespace code along the same lines of
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.

Scripted using

  git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
  do
    awk -i inplace '
      /^#define EXPORT_SYMBOL_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /^#define MODULE_IMPORT_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /MODULE_IMPORT_NS/ {
        $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
      }
      /EXPORT_SYMBOL_NS/ {
        if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
  	if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &amp;&amp;
  	    $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &amp;&amp;
  	    $0 !~ /^my/) {
  	  getline line;
  	  gsub(/[[:space:]]*\\$/, "");
  	  gsub(/[[:space:]]/, "", line);
  	  $0 = $0 " " line;
  	}

  	$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
  		    "\\1(\\2, \"\\3\")", "g");
        }
      }
      { print }' $file;
  done

Requested-by: Masahiro Yamada &lt;masahiroy@kernel.org&gt;
Signed-off-by: Peter Zijlstra (Intel) &lt;peterz@infradead.org&gt;
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: sleep: Use bool for all 1-bit fields in struct dev_pm_info</title>
<updated>2024-01-24T16:10:30+00:00</updated>
<author>
<name>Rafael J. Wysocki</name>
<email>rafael.j.wysocki@intel.com</email>
</author>
<published>2024-01-22T16:11:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=b017500ab53c06441ff7d3a681484e37039b4f57'/>
<id>b017500ab53c06441ff7d3a681484e37039b4f57</id>
<content type='text'>
For some 1-bit fields in struct dev_pm_info the data type is bool, while
for some other 1-bit fields in there it is unsigned int, and these
differences are somewhat arbitrary.

For consistency, change the data type of the latter to bool, so that all
of the 1-bit fields in struct dev_pm_info fields are bool.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
For some 1-bit fields in struct dev_pm_info the data type is bool, while
for some other 1-bit fields in there it is unsigned int, and these
differences are somewhat arbitrary.

For consistency, change the data type of the latter to bool, so that all
of the 1-bit fields in struct dev_pm_info fields are bool.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: sleep: Restore asynchronous device resume optimization</title>
<updated>2024-01-10T19:59:20+00:00</updated>
<author>
<name>Rafael J. Wysocki</name>
<email>rafael.j.wysocki@intel.com</email>
</author>
<published>2024-01-09T16:59:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=3e999770ac1c7c31a70685dd5b88e89473509e9c'/>
<id>3e999770ac1c7c31a70685dd5b88e89473509e9c</id>
<content type='text'>
Before commit 7839d0078e0d ("PM: sleep: Fix possible deadlocks in core
system-wide PM code"), the resume of devices that were allowed to resume
asynchronously was scheduled before starting the resume of the other
devices, so the former did not have to wait for the latter unless
functional dependencies were present.

Commit 7839d0078e0d removed that optimization in order to address a
correctness issue, but it can be restored with the help of a new device
power management flag, so do that now.

Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Stanislaw Gruszka &lt;stanislaw.gruszka@linux.intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Before commit 7839d0078e0d ("PM: sleep: Fix possible deadlocks in core
system-wide PM code"), the resume of devices that were allowed to resume
asynchronously was scheduled before starting the resume of the other
devices, so the former did not have to wait for the latter unless
functional dependencies were present.

Commit 7839d0078e0d removed that optimization in order to address a
correctness issue, but it can be restored with the help of a new device
power management flag, so do that now.

Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Reviewed-by: Stanislaw Gruszka &lt;stanislaw.gruszka@linux.intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge branches 'pm-sleep', 'powercap' and 'pm-tools'</title>
<updated>2023-10-26T13:16:03+00:00</updated>
<author>
<name>Rafael J. Wysocki</name>
<email>rafael.j.wysocki@intel.com</email>
</author>
<published>2023-10-26T13:16:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=bf224871c27a7c7e2146d667176977ffe3752750'/>
<id>bf224871c27a7c7e2146d667176977ffe3752750</id>
<content type='text'>
Merge updates related to system sleep handling, one power capping update
and one PM utility update for 6.7-rc1:

 - Use __get_safe_page() rather than touching the list in hibernation
   snapshot code (Brian Geffon).

 - Fix symbol export for _SIMPLE_ variants of _PM_OPS() (Raag Jadav).

 - Clean up sync_read handling in snapshot_write_next() (Brian Geffon).

 - Fix kerneldoc comments for swsusp_check() and swsusp_close() to
   better match code (Christoph Hellwig).

 - Downgrade BIOS locked limits pr_warn() in the Intel RAPL power
   capping driver to pr_debug() (Ville Syrjälä).

 - Change the minimum python version for the intel_pstate_tracer utility
   from 2.7 to 3.6 (Doug Smythies).

* pm-sleep:
  PM: hibernate: fix the kerneldoc comment for swsusp_check() and swsusp_close()
  PM: hibernate: Clean up sync_read handling in snapshot_write_next()
  PM: sleep: Fix symbol export for _SIMPLE_ variants of _PM_OPS()
  PM: hibernate: Use __get_safe_page() rather than touching the list

* powercap:
  powercap: intel_rapl: Downgrade BIOS locked limits pr_warn() to pr_debug()

* pm-tools:
  tools/power/x86/intel_pstate_tracer: python minimum version
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Merge updates related to system sleep handling, one power capping update
and one PM utility update for 6.7-rc1:

 - Use __get_safe_page() rather than touching the list in hibernation
   snapshot code (Brian Geffon).

 - Fix symbol export for _SIMPLE_ variants of _PM_OPS() (Raag Jadav).

 - Clean up sync_read handling in snapshot_write_next() (Brian Geffon).

 - Fix kerneldoc comments for swsusp_check() and swsusp_close() to
   better match code (Christoph Hellwig).

 - Downgrade BIOS locked limits pr_warn() in the Intel RAPL power
   capping driver to pr_debug() (Ville Syrjälä).

 - Change the minimum python version for the intel_pstate_tracer utility
   from 2.7 to 3.6 (Doug Smythies).

* pm-sleep:
  PM: hibernate: fix the kerneldoc comment for swsusp_check() and swsusp_close()
  PM: hibernate: Clean up sync_read handling in snapshot_write_next()
  PM: sleep: Fix symbol export for _SIMPLE_ variants of _PM_OPS()
  PM: hibernate: Use __get_safe_page() rather than touching the list

* powercap:
  powercap: intel_rapl: Downgrade BIOS locked limits pr_warn() to pr_debug()

* pm-tools:
  tools/power/x86/intel_pstate_tracer: python minimum version
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: domains: Introduce dev_pm_domain_set_performance_state()</title>
<updated>2023-10-06T07:07:33+00:00</updated>
<author>
<name>Ulf Hansson</name>
<email>ulf.hansson@linaro.org</email>
</author>
<published>2023-09-25T13:17:07+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=3fbc5c3b8522d655cf91d32c158261060fdc02fe'/>
<id>3fbc5c3b8522d655cf91d32c158261060fdc02fe</id>
<content type='text'>
The generic PM domain is currently the only PM domain variant that supports
performance scaling. To allow performance scaling to be supported through a
common interface, let's add an optional callback -&gt;set_performance_state(),
in the struct dev_pm_domain.

Moreover, let's add a function, dev_pm_domain_set_performance_state(), that
may be called by consumers to request a new performance state for a device
through its PM domain.

Note that, in most cases it's preferred that a consumer use the OPP library
to request a new performance state for its device. Although, this requires
some additional changes to be supported, which are being implemented from
subsequent changes.

Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Acked-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The generic PM domain is currently the only PM domain variant that supports
performance scaling. To allow performance scaling to be supported through a
common interface, let's add an optional callback -&gt;set_performance_state(),
in the struct dev_pm_domain.

Moreover, let's add a function, dev_pm_domain_set_performance_state(), that
may be called by consumers to request a new performance state for a device
through its PM domain.

Note that, in most cases it's preferred that a consumer use the OPP library
to request a new performance state for its device. Although, this requires
some additional changes to be supported, which are being implemented from
subsequent changes.

Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Acked-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: sleep: Fix symbol export for _SIMPLE_ variants of _PM_OPS()</title>
<updated>2023-09-26T16:40:15+00:00</updated>
<author>
<name>Raag Jadav</name>
<email>raag.jadav@intel.com</email>
</author>
<published>2023-09-22T05:45:52+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=8d74f1da776da9b0306630b13a3025214fa44618'/>
<id>8d74f1da776da9b0306630b13a3025214fa44618</id>
<content type='text'>
Currently EXPORT_*_SIMPLE_DEV_PM_OPS() use EXPORT_*_DEV_PM_OPS() set
of macros to export dev_pm_ops symbol, which export the symbol in case
CONFIG_PM=y but don't take CONFIG_PM_SLEEP into consideration.

Since _SIMPLE_ variants of _PM_OPS() do not include runtime PM handles
and are only used in case CONFIG_PM_SLEEP=y, we should not be exporting
dev_pm_ops symbol for them in case CONFIG_PM_SLEEP=n.

This can be fixed by having two distinct set of export macros for both
_RUNTIME_ and _SIMPLE_ variants of _PM_OPS(), such that the export of
dev_pm_ops symbol used in each variant depends on CONFIG_PM and
CONFIG_PM_SLEEP respectively.

Introduce _DEV_SLEEP_PM_OPS() set of export macros for _SIMPLE_ variants
of _PM_OPS(), which export dev_pm_ops symbol only in case CONFIG_PM_SLEEP=y
and discard it otherwise.

Fixes: 34e1ed189fab ("PM: Improve EXPORT_*_DEV_PM_OPS macros")
Signed-off-by: Raag Jadav &lt;raag.jadav@intel.com&gt;
Reviewed-by: Paul Cercueil &lt;paul@crapouillou.net&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Currently EXPORT_*_SIMPLE_DEV_PM_OPS() use EXPORT_*_DEV_PM_OPS() set
of macros to export dev_pm_ops symbol, which export the symbol in case
CONFIG_PM=y but don't take CONFIG_PM_SLEEP into consideration.

Since _SIMPLE_ variants of _PM_OPS() do not include runtime PM handles
and are only used in case CONFIG_PM_SLEEP=y, we should not be exporting
dev_pm_ops symbol for them in case CONFIG_PM_SLEEP=n.

This can be fixed by having two distinct set of export macros for both
_RUNTIME_ and _SIMPLE_ variants of _PM_OPS(), such that the export of
dev_pm_ops symbol used in each variant depends on CONFIG_PM and
CONFIG_PM_SLEEP respectively.

Introduce _DEV_SLEEP_PM_OPS() set of export macros for _SIMPLE_ variants
of _PM_OPS(), which export dev_pm_ops symbol only in case CONFIG_PM_SLEEP=y
and discard it otherwise.

Fixes: 34e1ed189fab ("PM: Improve EXPORT_*_DEV_PM_OPS macros")
Signed-off-by: Raag Jadav &lt;raag.jadav@intel.com&gt;
Reviewed-by: Paul Cercueil &lt;paul@crapouillou.net&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
