wireguard-linux/kernel/power, branch jd/orphan-parallel

kernel/: fix repeated words in comments

2020-10-16T18:11:19Z

Fix multiple occurrences of duplicated words in kernel/. Fix one typo/spello on the same line as a duplicate word. Change one instance of "the the" to "that the". Otherwise just drop one of the repeated words. Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Link: https://lkml.kernel.org/r/98202fa6-8919-ef63-9efe-c0fad5ca7af1@infradead.org Signed-off-by: Linus Torvalds

Merge tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2020-10-14T17:45:41Z

Pull power management updates from Rafael Wysocki: "These rework the collection of cpufreq statistics to allow it to take place if fast frequency switching is enabled in the governor, rework the frequency invariance handling in the cpufreq core and drivers, add new hardware support to a couple of cpufreq drivers, fix a number of assorted issues and clean up the code all over. Specifics: - Rework cpufreq statistics collection to allow it to take place when fast frequency switching is enabled in the governor (Viresh Kumar). - Make the cpufreq core set the frequency scale on behalf of the driver and update several cpufreq drivers accordingly (Ionela Voinescu, Valentin Schneider). - Add new hardware support to the STI and qcom cpufreq drivers and improve them (Alain Volmat, Manivannan Sadhasivam). - Fix multiple assorted issues in cpufreq drivers (Jon Hunter, Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan Gerhold, Viresh Kumar). - Fix several assorted issues in the operating performance points (OPP) framework (Stephan Gerhold, Viresh Kumar). - Allow devfreq drivers to fetch devfreq instances by DT enumeration instead of using explicit phandles and modify the devfreq core code to support driver-specific devfreq DT bindings (Leonard Crestez, Chanwoo Choi). - Improve initial hardware resetting in the tegra30 devfreq driver and clean up the tegra cpuidle driver (Dmitry Osipenko). - Update the cpuidle core to collect state entry rejection statistics and expose them via sysfs (Lina Iyer). - Improve the ACPI _CST code handling diagnostics (Chen Yu). - Update the PSCI cpuidle driver to allow the PM domain initialization to occur in the OSI mode as well as in the PC mode (Ulf Hansson). - Rework the generic power domains (genpd) core code to allow domain power off transition to be aborted in the absence of the "power off" domain callback (Ulf Hansson). - Fix two suspend-to-idle issues in the ACPI EC driver (Rafael Wysocki). - Fix the handling of timer_expires in the PM-runtime framework on 32-bit systems and the handling of device links in it (Grygorii Strashko, Xiang Chen). - Add IO requests batching support to the hibernate image saving and reading code and drop a bogus get_gendisk() from there (Xiaoyi Chen, Christoph Hellwig). - Allow PCIe ports to be put into the D3cold power state if they are power-manageable via ACPI (Lukas Wunner). - Add missing header file include to a power capping driver (Pujin Shi). - Clean up the qcom-cpr AVS driver a bit (Liu Shixin). - Kevin Hilman steps down as designated reviwer of adaptive voltage scaling (AVS) drivers (Kevin Hilman)" * tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits) cpufreq: stats: Fix string format specifier mismatch arm: disable frequency invariance for CONFIG_BL_SWITCHER cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() cpufreq: stats: Add memory barrier to store_reset() cpufreq: schedutil: Simplify sugov_fast_switch() ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe() ACPI: EC: PM: Flush EC work unconditionally after wakeup PCI/ACPI: Whitelist hotplug ports for D3 if power managed by ACPI PM: hibernate: remove the bogus call to get_gendisk() in software_resume() cpufreq: Move traces and update to policy->cur to cpufreq core cpufreq: stats: Enable stats for fast-switch as well cpufreq: stats: Mark few conditionals with unlikely() cpufreq: stats: Remove locking cpufreq: stats: Defer stats update to cpufreq_stats_record_transition() PM: domains: Allow to abort power off when no ->power_off() callback PM: domains: Rename power state enums for genpd PM / devfreq: tegra30: Improve initial hardware resetting PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function PM / devfreq: Change prototype of devfreq_get_devfreq_by_phandle function PM / devfreq: Add devfreq_get_devfreq_by_node function ...

Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block

2020-10-13T19:12:44Z

Pull block updates from Jens Axboe: - Series of merge handling cleanups (Baolin, Christoph) - Series of blk-throttle fixes and cleanups (Baolin) - Series cleaning up BDI, seperating the block device from the backing_dev_info (Christoph) - Removal of bdget() as a generic API (Christoph) - Removal of blkdev_get() as a generic API (Christoph) - Cleanup of is-partition checks (Christoph) - Series reworking disk revalidation (Christoph) - Series cleaning up bio flags (Christoph) - bio crypt fixes (Eric) - IO stats inflight tweak (Gabriel) - blk-mq tags fixes (Hannes) - Buffer invalidation fixes (Jan) - Allow soft limits for zone append (Johannes) - Shared tag set improvements (John, Kashyap) - Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel) - DM no-wait support (Mike, Konstantin) - Request allocation improvements (Ming) - Allow md/dm/bcache to use IO stat helpers (Song) - Series improving blk-iocost (Tejun) - Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang, Xianting, Yang, Yufen, yangerkun) * tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits) block: fix uapi blkzoned.h comments blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue blk-mq: get rid of the dead flush handle code path block: get rid of unnecessary local variable block: fix comment and add lockdep assert blk-mq: use helper function to test hw stopped block: use helper function to test queue register block: remove redundant mq check block: invoke blk_mq_exit_sched no matter whether have .exit_sched percpu_ref: don't refer to ref->data if it isn't allocated block: ratelimit handle_bad_sector() message blk-throttle: Re-use the throtl_set_slice_end() blk-throttle: Open code __throtl_de/enqueue_tg() blk-throttle: Move service tree validation out of the throtl_rb_first() blk-throttle: Move the list operation after list validation blk-throttle: Fix IO hang for a corner case blk-throttle: Avoid tracking latency if low limit is invalid blk-throttle: Avoid getting the current time if tg->last_finish_time is 0 blk-throttle: Remove a meaningless parameter for throtl_downgrade_state() block: Remove redundant 'return' statement ...

PM: hibernate: remove the bogus call to get_gendisk() in software_resume()

2020-10-05T16:42:58Z

get_gendisk grabs a reference on the disk and file operation, so this code will leak both of them while having absolutely no use for the gendisk itself. This effectively reverts commit 2df83fa4bce421f ("PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format") Signed-off-by: Christoph Hellwig Signed-off-by: Rafael J. Wysocki

PM: hibernate: Batch hibernate and resume IO requests

2020-09-28T13:58:18Z

Hibernate and resume process submits individual IO requests for each page of the data, so use blk_plug to improve the batching of these requests. Testing this change with hibernate and resumes consistently shows merging of the IO requests and more than an order of magnitude improvement in hibernate and resume speed is observed. One hibernate and resume cycle for 16GB RAM out of 32GB in use takes around 21 minutes before the change, and 1 minutes after the change on a system with limited storage IOPS. Signed-off-by: Xiaoyi Chen Co-Developed-by: Anchal Agarwal Signed-off-by: Anchal Agarwal [ rjw: Subject and changelog edits, white space damage fixes ] Signed-off-by: Rafael J. Wysocki

PM: mm: cleanup swsusp_swap_check

2020-09-23T16:43:19Z

Use blkdev_get_by_dev instead of bdget + blkdev_get. Signed-off-by: Christoph Hellwig Acked-by: Rafael J. Wysocki Signed-off-by: Jens Axboe

mm: split swap_type_of

2020-09-23T16:43:19Z

swap_type_of is used for two entirely different purposes: (1) check what swap type a given device/offset corresponds to (2) find the first available swap device that can be written to Mixing both in a single function creates an unreadable mess. Create two separate functions instead, and switch both to pass a dev_t instead of a struct block_device to further simplify the code. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

PM: rewrite is_hibernate_resume_dev to not require an inode

2020-09-23T16:43:19Z

Just check the dev_t to help simplifying the code. Signed-off-by: Christoph Hellwig Acked-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Jens Axboe

notifier: Fix broken error handling pattern

2020-09-01T07:58:03Z

The current notifiers have the following error handling pattern all over the place: int err, nr; err = __foo_notifier_call_chain(&chain, val_up, v, -1, &nr); if (err & NOTIFIER_STOP_MASK) __foo_notifier_call_chain(&chain, val_down, v, nr-1, NULL) And aside from the endless repetition thereof, it is broken. Consider blocking notifiers; both calls take and drop the rwsem, this means that the notifier list can change in between the two calls, making @nr meaningless. Fix this by replacing all the __foo_notifier_call_chain() functions with foo_notifier_call_chain_robust() that embeds the above pattern, but ensures it is inside a single lock region. Note: I switched atomic_notifier_call_chain_robust() to use the spinlock, since RCU cannot provide the guarantee required for the recovery. Note: software_resume() error handling was broken afaict. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Acked-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/20200818135804.325626653@infradead.org

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59Z

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva