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Move CPU capacity check to em_adjust_new_capacity() PM: EM: Documentation: Fix typos in example driver code cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas() PM: sleep: Introduce pm_suspend_in_progress() ... PM: sleep: Print PM debug messages during hibernation 2025-05-13T12:00:20Z Rafael J. Wysocki rafael.j.wysocki@intel.com 2025-05-09T12:51:47Z urn:sha1:1b17d4525bca3916644c41e01522df8fa0f8b90b Commit cdb8c100d8a4 ("include/linux/suspend.h: Only show pm_pr_dbg messages at suspend/resume") caused PM debug messages to only be printed during system-wide suspend and resume in progress, but it forgot about hibernation. Address this by adding a check for hibernation in progress to pm_debug_messages_should_print(). Fixes: cdb8c100d8a4 ("include/linux/suspend.h: Only show pm_pr_dbg messages at suspend/resume") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://patch.msgid.link/4998903.GXAFRqVoOG@rjwysocki.net power: freeze filesystems during suspend/resume 2025-05-09T10:41:23Z Christian Brauner brauner@kernel.org 2025-04-02T14:07:33Z urn:sha1:eacfbf74196f91e4c26d9f8c78e1576c1225cd8c Now all the pieces are in place to actually allow the power subsystem to freeze/thaw filesystems during suspend/resume. Filesystems are only frozen and thawed if the power subsystem does actually own the freeze. We could bubble up errors and fail suspend/resume if the error isn't EBUSY (aka it's already frozen) but I don't think that this is worth it. Filesystem freezing during suspend/resume is best-effort. If the user has 500 ext4 filesystems mounted and 4 fail to freeze for whatever reason then we simply skip them. What we have now is already a big improvement and let's see how we fare with it before making our lives even harder (and uglier) than we have to. We add a new sysctl know /sys/power/freeze_filesystems that will allow userspace to freeze filesystems during suspend/hibernate. For now it defaults to off. The thaw logic doesn't require checking whether freezing is enabled because the power subsystem exclusively owns frozen filesystems for the duration of suspend/hibernate and is able to skip filesystems it doesn't need to freeze. Also it is technically possible that filesystem filesystem_freeze_enabled is true and power freezes the filesystems but before freezing all processes another process disables filesystem_freeze_enabled. If power were to place the filesystems_thaw() call under filesystems_freeze_enabled it would fail to thaw the fileystems it frozw. The exclusive holder mechanism makes it possible to iterate through the list without any concern making sure that no filesystems are left frozen. Link: https://lore.kernel.org/r/20250402-work-freeze-v2-3-6719a97b52ac@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> PM: sleep: convert comment from kernel-doc to plain comment 2025-01-14T20:14:19Z Randy Dunlap rdunlap@infradead.org 2025-01-11T06:31:07Z urn:sha1:96484d21ae2775e142b23e99f90c02faef80d480 Modify a non-kernel-doc comment to begin with /* instead of /** so that it does not cause a kernel-doc warning. power.h:114: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Auxiliary structure used for reading the snapshot image data and power.h:114: warning: missing initial short description on line: * Auxiliary structure used for reading the snapshot image data and Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Pavel Machek <pavel@ucw.cz> Link: https://patch.msgid.link/20250111063107.910825-1-rdunlap@infradead.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>