pm24.git/drivers/cpuidle, branch master

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43Z

The continual trickle of small conversion patches is grating on me, and is really not helping. Just get rid of the 'remove_new' member function, which is just an alias for the plain 'remove', and had a comment to that effect: /* * .remove_new() is a relic from a prototype conversion of .remove(). * New drivers are supposed to implement .remove(). Once all drivers are * converted to not use .remove_new any more, it will be dropped. */ This was just a tree-wide 'sed' script that replaced '.remove_new' with '.remove', with some care taken to turn a subsequent tab into two tabs to make things line up. I did do some minimal manual whitespace adjustment for places that used spaces to line things up. Then I just removed the old (sic) .remove_new member function, and this is the end result. No more unnecessary conversion noise. Signed-off-by: Linus Torvalds

Merge tag 'riscv-for-linus-6.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-11-27T19:19:09Z

Pull RISC-v updates from Palmer Dabbelt: - Support for pointer masking in userspace - Support for probing vector misaligned access performance - Support for qspinlock on systems with Zacas and Zabha * tag 'riscv-for-linus-6.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits) RISC-V: Remove unnecessary include from compat.h riscv: Fix default misaligned access trap riscv: Add qspinlock support dt-bindings: riscv: Add Ziccrse ISA extension description riscv: Add ISA extension parsing for Ziccrse asm-generic: ticket-lock: Add separate ticket-lock.h asm-generic: ticket-lock: Reuse arch_spinlock_t of qspinlock riscv: Implement xchg8/16() using Zabha riscv: Implement arch_cmpxchg128() using Zacas riscv: Improve zacas fully-ordered cmpxchg() riscv: Implement cmpxchg8/16() using Zabha dt-bindings: riscv: Add Zabha ISA extension description riscv: Implement cmpxchg32/64() using Zacas riscv: Do not fail to build on byte/halfword operations with Zawrs riscv: Move cpufeature.h macros into their own header KVM: riscv: selftests: Add Smnpm and Ssnpm to get-reg-list test RISC-V: KVM: Allow Smnpm and Ssnpm extensions for guests riscv: hwprobe: Export the Supm ISA extension riscv: selftests: Add a pointer masking test riscv: Allow ptrace control of the tagged address ABI ...

Merge tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2024-11-23T18:44:31Z

Pull powerpc updates from Michael Ellerman: - Rework kfence support for the HPT MMU to work on systems with >= 16TB of RAM. - Remove the powerpc "maple" platform, used by the "Yellow Dog Powerstation". - Add support for DYNAMIC_FTRACE_WITH_CALL_OPS, DYNAMIC_FTRACE_WITH_DIRECT_CALLS & BPF Trampolines. - Add support for running KVM nested guests on Power11. - Other small features, cleanups and fixes. Thanks to Amit Machhiwal, Arnd Bergmann, Christophe Leroy, Costa Shulyupin, David Hunter, David Wang, Disha Goel, Gautam Menghani, Geert Uytterhoeven, Hari Bathini, Julia Lawall, Kajol Jain, Keith Packard, Lukas Bulwahn, Madhavan Srinivasan, Markus Elfring, Michal Suchanek, Ming Lei, Mukesh Kumar Chaurasiya, Nathan Chancellor, Naveen N Rao, Nicholas Piggin, Nysal Jan K.A, Paulo Miguel Almeida, Pavithra Prakash, Ritesh Harjani (IBM), Rob Herring (Arm), Sachin P Bappalige, Shen Lichuan, Simon Horman, Sourabh Jain, Thomas Weißschuh, Thorsten Blum, Thorsten Leemhuis, Venkat Rao Bagalkote, Zhang Zekun, and zhang jiao. * tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (89 commits) EDAC/powerpc: Remove PPC_MAPLE drivers powerpc/perf: Add per-task/process monitoring to vpa_pmu driver powerpc/kvm: Add vpa latency counters to kvm_vcpu_arch docs: ABI: sysfs-bus-event_source-devices-vpa-pmu: Document sysfs event format entries for vpa_pmu powerpc/perf: Add perf interface to expose vpa counters MAINTAINERS: powerpc: Mark Maddy as "M" powerpc/Makefile: Allow overriding CPP powerpc-km82xx.c: replace of_node_put() with __free ps3: Correct some typos in comments powerpc/kexec: Fix return of uninitialized variable macintosh: Use common error handling code in via_pmu_led_init() powerpc/powermac: Use of_property_match_string() in pmac_has_backlight_type() powerpc: remove dead config options for MPC85xx platform support powerpc/xive: Use cpumask_intersects() selftests/powerpc: Remove the path after initialization. powerpc/xmon: symbol lookup length fixed powerpc/ep8248e: Use %pa to format resource_size_t powerpc/ps3: Reorganize kerneldoc parameter names KVM: PPC: Book3S HV: Fix kmv -> kvm typo powerpc/sstep: make emulate_vsx_load and emulate_vsx_store static ...

cpuidle: Do not return from cpuidle_play_dead() on callback failures

2024-11-19T20:46:51Z

If the :enter_dead() idle state callback fails for a certain state, there may be still a shallower state for which it will work. Because the only caller of cpuidle_play_dead(), native_play_dead(), falls back to hlt_play_dead() if it returns an error, it should better try all of the idle states for which :enter_dead() is present before failing, so change it accordingly. Also notice that the :enter_dead() state callback is not expected to return on success (the CPU should be "dead" then), so make cpuidle_play_dead() ignore its return value. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mario Limonciello Tested-by: Mario Limonciello # 6.12-rc7 Reviewed-by: Gautham R. Shenoy Link: https://patch.msgid.link/3318440.aeNJFYEL58@rjwysocki.net

powerpc/machdep: Drop include of dma-mapping.h

2024-10-29T12:01:05Z

Drop the include of dma-mapping.h in machdep.h, replace it with forward declarations of struct device and struct pci_dev, and include time64.h and page.h which are required for time64_t and pgprot_t respectively. Add direct includes of some other headers to some files that were getting them via machdep.h. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241009051826.132805-2-mpe@ellerman.id.au

cpuidle: Correct some typos in comments

2024-10-18T16:44:32Z

Fixed some confusing typos that were currently identified with codespell, the details are as follows: -in the code comments: drivers/cpuidle/cpuidle-arm.c:142: registeration ==> registration drivers/cpuidle/cpuidle-qcom-spm.c:51: accidently ==> accidentally drivers/cpuidle/cpuidle.c:409: dependant ==> dependent drivers/cpuidle/driver.c:264: occuring ==> occurring drivers/cpuidle/driver.c:299: occuring ==> occurring Signed-off-by: Shen Lichuan Link: https://patch.msgid.link/20240927081018.8608-1-shenlichuan@vivo.com Signed-off-by: Rafael J. Wysocki

Merge patch series "cpuidle: riscv-sbi: Allow cpuidle pd used by other devices"

2024-10-17T18:34:46Z

Nick Hu says: Add this patchset so the devices that inside the cpu/cluster power domain can use the cpuidle pd to register the genpd notifier to handle the PM when cpu/cluster is going to enter a deeper sleep state. * b4-shazam-merge: cpuidle: riscv-sbi: Add cpuidle_disabled() check cpuidle: riscv-sbi: Move sbi_cpuidle_init to arch_initcall Link: https://lore.kernel.org/r/20240814054434.3563453-1-nick.hu@sifive.com Signed-off-by: Palmer Dabbelt

cpuidle: riscv-sbi: Add cpuidle_disabled() check

2024-10-17T18:34:43Z

The consumer devices that inside the cpu/cluster power domain may register the genpd notifier where their power domains point to the pd nodes under '/cpus/power-domains'. If the cpuidle.off==1, the genpd notifier will fail due to sbi_cpuidle_pd_allow_domain_state is not set. We also need the sbi_cpuidle_cpuhp_up/down to invoke the callbacks. Therefore adding a cpuidle_disabled() check before cpuidle_register() to address the issue. Signed-off-by: Nick Hu Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20240814054434.3563453-3-nick.hu@sifive.com Signed-off-by: Palmer Dabbelt

cpuidle: riscv-sbi: Move sbi_cpuidle_init to arch_initcall

2024-10-17T18:34:42Z

Move the sbi_cpuidle_init to the arch_initcall to prevent the consumer devices from being deferred. Signed-off-by: Nick Hu Link: https://lore.kernel.org/lkml/CAKddAkAOUJSnM=Px-YO=U6pis_7mODHZbmYqcgEzXikriqYvXQ@mail.gmail.com/ Suggested-by: Anup Patel Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20240814054434.3563453-2-nick.hu@sifive.com Signed-off-by: Palmer Dabbelt

cpuidle: menu: Remove iowait influence

2024-09-30T15:00:55Z

Remove CPU iowaiters influence on idle state selection. Remove the menu notion of performance multiplier which increased with the number of tasks that went to iowait sleep on this CPU and haven't woken up yet. Relying on iowait for cpuidle is problematic for a few reasons: 1. There is no guarantee that an iowaiting task will wake up on the same CPU. 2. The task being in iowait says nothing about the idle duration, we could be selecting shallower states for a long time. 3. The task being in iowait doesn't always imply a performance hit with increased latency. 4. If there is such a performance hit, the number of iowaiting tasks doesn't directly correlate. 5. The definition of iowait altogether is vague at best, it is sprinkled across kernel code. Signed-off-by: Christian Loehle Link: https://patch.msgid.link/20240905092645.2885200-2-christian.loehle@arm.com [ rjw: Minor edits in the changelog ] Signed-off-by: Rafael J. Wysocki