kernel/drivers/base/power/wakeup.c, branch linux-5.1.y

Merge branches 'pm-core', 'pm-sleep' and 'pm-qos'

2019-03-14T09:51:38Z

* pm-core: PM-runtime: Call pm_runtime_active|suspended_time() from sysfs PM-runtime: Consolidate code to get active/suspended time * pm-sleep: PM / wakeup: Drop wakeup_source_drop() PM / wakeup: Rework wakeup source timer cancellation * pm-qos: PM / QoS: Fix typo in file description

PM / wakeup: Drop wakeup_source_drop()

2019-03-12T08:43:00Z

After commit d856f39ac1cc ("PM / wakeup: Rework wakeup source timer cancellation") wakeup_source_drop() is a trivial wrapper around __pm_relax() and it has no users except for wakeup_source_destroy() and wakeup_source_trash() which also has no users, so drop it along with the latter and make wakeup_source_destroy() call __pm_relax() directly. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar

PM / wakeup: Rework wakeup source timer cancellation

2019-03-12T08:40:48Z

If wakeup_source_add() is called right after wakeup_source_remove() for the same wakeup source, timer_setup() may be called for a potentially scheduled timer which is incorrect. To avoid that, move the wakeup source timer cancellation from wakeup_source_drop() to wakeup_source_remove(). Moreover, make wakeup_source_remove() clear the timer function after canceling the timer to let wakeup_source_not_registered() treat unregistered wakeup sources in the same way as the ones that have never been registered. Signed-off-by: Viresh Kumar Cc: 4.4+ # 4.4+ [ rjw: Subject, changelog, merged two patches together ] Signed-off-by: Rafael J. Wysocki

PM: Add and use pr_fmt()

2019-03-07T10:02:02Z

Prefix all printk/pr_ messages with "PM: " to make the logging a bit more consistent. Miscellanea: o Convert a few printks to pr_ o Whitespace to align to open parentheses o Remove embedded "PM: " from pr_debugs as pr_fmt adds it Signed-off-by: Joe Perches Reviewed-by: Kees Cook Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki

PM / wakeup: fix kerneldoc comment for pm_wakeup_dev_event()

2019-01-29T10:40:13Z

This brings the kernel doc in line with the function signature. Signed-off-by: Yangtao Li Acked-by: Pavel Machek [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki

Merge branches 'pm-pci', 'acpi-pm', 'pm-sleep' and 'pm-avs'

2018-06-04T08:41:53Z

* pm-pci: PCI / PM: Clean up outdated comments in pci_target_state() PCI / PM: Do not clear state_saved for devices that remain suspended * acpi-pm: ACPI: EC: Dispatch the EC GPE directly on s2idle wake ACPICA: Introduce acpi_dispatch_gpe() * pm-sleep: PM / hibernate: Fix oops at snapshot_write() PM / wakeup: Make s2idle_lock a RAW_SPINLOCK PM / s2idle: Make s2idle_wait_head swait based PM / wakeup: Make events_lock a RAW_SPINLOCK PM / suspend: Prevent might sleep splats * pm-avs: PM / AVS: rockchip-io: add io selectors and supplies for PX30

PM / wakeup: Make events_lock a RAW_SPINLOCK

2018-05-27T09:55:02Z

The `events_lock' is acquired during suspend while interrupts are disabled even on RT. The lock is taken only for a very brief moment. Make it a RAW lock which avoids "sleeping while atomic" warnings on RT. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Rafael J. Wysocki

PM: wakeup: Use pr_debug() for the "aborting suspend" message

2018-05-24T08:19:16Z

The message printed by pm_wakeup_pending() on wakeup detection is not very useful if someone is not interested specifically in debugging wakeup, so turn it into a pm_debug() one. Signed-off-by: Rafael J. Wysocki

PM / wakeup: Only update last time for active wakeup sources

2018-05-10T09:39:19Z

When wakelock support was added, the wakeup_source_add() function was updated to set the last_time value of the wakeup source. This has the unintended side effect of producing confusing output from pm_print_active_wakeup_sources() when a wakeup source is added prior to a sleep that is blocked by a different wakeup source. The function pm_print_active_wakeup_sources() will search for the most recently active wakeup source when no active source is found. If a wakeup source is added after a different wakeup source blocks the system from going to sleep it may have a later last_time value than the blocking source and be output as the last active wakeup source even if it has never actually been active. It looks to me like the change to wakeup_source_add() was made to prevent the wakelock garbage collection from accidentally dropping a wakelock during the narrow window between adding the wakelock to the wakelock list in wakelock_lookup_add() and the activation of the wakeup source in pm_wake_lock(). This commit changes the behavior so that only the last_time of the wakeup source used by a wakelock is initialized prior to adding it to the wakeup source list. This preserves the meaning of the last_time value as the last time the wakeup source was active and allows a wakeup source that has never been active to have a last_time value of 0. Fixes: b86ff9820fd5 (PM / Sleep: Add user space interface for manipulating wakeup sources, v3) Signed-off-by: Doug Berger Signed-off-by: Rafael J. Wysocki

PM / wakeup: Use seq_open() to show wakeup stats

2018-05-10T09:36:46Z

single_open() interface requires that the whole output must fit into a single buffer. This will lead to timeout when system memory is not in a good situation. This patch use seq_open() to show wakeup stats. This method need only one page, so timeout will not be observed. Signed-off-by: Ganesh Mahendran Signed-off-by: Rafael J. Wysocki