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2025-05-07cpufreq/sched: Move cpufreq-specific EAS checks to cpufreqRafael J. Wysocki
Doing cpufreq-specific EAS checks that require accessing policy internals directly from sched_is_eas_possible() is a bit unfortunate, so introduce cpufreq_ready_for_eas() in cpufreq, move those checks into that new function and make sched_is_eas_possible() call it. While at it, address a possible race between the EAS governor check and governor change by doing the former under the policy rwsem. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Christian Loehle <christian.loehle@arm.com> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Link: https://patch.msgid.link/2317800.iZASKD2KPV@rjwysocki.net
2025-05-07cpufreq/sched: schedutil: Add helper for governor checksRafael J. Wysocki
Add a helper for checking if schedutil is the current governor for a given cpufreq policy and use it in sched_is_eas_possible() to avoid accessing cpufreq policy internals directly from there. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Christian Loehle <christian.loehle@arm.com> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Link: https://patch.msgid.link/3365956.44csPzL39Z@rjwysocki.net
2025-05-07module: ensure that kobject_put() is safe for module type kobjectsDmitry Antipov
In 'lookup_or_create_module_kobject()', an internal kobject is created using 'module_ktype'. So call to 'kobject_put()' on error handling path causes an attempt to use an uninitialized completion pointer in 'module_kobject_release()'. In this scenario, we just want to release kobject without an extra synchronization required for a regular module unloading process, so adding an extra check whether 'complete()' is actually required makes 'kobject_put()' safe. Reported-by: syzbot+7fb8a372e1f6add936dd@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=7fb8a372e1f6add936dd Fixes: 942e443127e9 ("module: Fix mod->mkobj.kobj potentially freed too early") Cc: stable@vger.kernel.org Suggested-by: Petr Pavlu <petr.pavlu@suse.com> Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> Link: https://lore.kernel.org/r/20250507065044.86529-1-dmantipov@yandex.ru Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
2025-05-07Merge branch 'for-6.15-fixes' into for-6.16Tejun Heo
To receive 428dc9fc0873 ("sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator") which conflicts with cdf5a6faa8cf ("sched_ext: Move dsq_hash into scx_sched"). The conflict is a simple context conflict which can be resolved by taking changes from both changes in the right order.
2025-05-07sched_ext: bpf_iter_scx_dsq_new() should always initialize iteratorTejun Heo
BPF programs may call next() and destroy() on BPF iterators even after new() returns an error value (e.g. bpf_for_each() macro ignores error returns from new()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized state after an error return causing bpf_iter_scx_dsq_next() to dereference garbage data. Make bpf_iter_scx_dsq_new() always clear $kit->dsq so that next() and destroy() become noops. Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: 650ba21b131e ("sched_ext: Implement DSQ iterator") Cc: stable@vger.kernel.org # v6.12+ Acked-by: Andrea Righi <arighi@nvidia.com>
2025-05-07genirq: Use scoped_guard() to shut clang upThomas Gleixner
This code pattern trips clang up: if (fail) goto undo; guard(lock)(lock); do_stuff(); return 0; undo: ... as it somehow extends the scope of the guard beyond the return statement. Replace it with a scoped guard to help it to get its act together. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Closes: https://lore.kernel.org/oe-kbuild-all/202505071809.ajpPxfoZ-lkp@intel.com/
2025-05-07PM: hibernate: split and simplify hib_submit_ioChristoph Hellwig
Split hib_submit_io into a sync and async version. The sync version is a small wrapper around bdev_rw_virt which implements all the logic to add a kernel direct mapping range to a bio and synchronously submits it, while the async version is slightly simplified using the bio_add_virt_nofail for adding the single range. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20250507120451.4000627-13-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-05-07genirq: Remove unused remove_percpu_irq()Dr. David Alan Gilbert
remove_percpu_irq() has been unused since it was added in 2011 by commit 31d9d9b6d830 ("genirq: Add support for per-cpu dev_id interrupts") Remove it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250420164656.112641-1-linux@treblig.org
2025-05-07genirq: Remove irq_[get|put]_desc*()Thomas Gleixner
All users are converted to the guards. Remove the helpers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.729586582@linutronix.de
2025-05-07genirq/manage: Rework irq_set_irqchip_state()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.670808288@linutronix.de
2025-05-07genirq/manage: Rework irq_get_irqchip_state()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.612184618@linutronix.de
2025-05-07genirq/manage: Rework teardown_percpu_nmi()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.552884529@linutronix.de
2025-05-07genirq/manage: Rework prepare_percpu_nmi()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.494561120@linutronix.de
2025-05-07genirq/manage: Rework disable_percpu_irq()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.435932527@linutronix.de
2025-05-07genirq/manage: Rework irq_percpu_is_enabled()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.376836282@linutronix.de
2025-05-07genirq/manage: Rework enable_percpu_irq()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.315844964@linutronix.de
2025-05-07genirq/manage: Rework irq_set_parent()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.258216558@linutronix.de
2025-05-07genirq/manage: Rework can_request_irq()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Make the return value boolean to reflect it's meaning. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.187250840@linutronix.de
2025-05-07genirq/manage: Rework irq_set_irq_wake()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/87ldrhq0hc.ffs@tglx
2025-05-07genirq/manage: Rework enable_irq()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.071157729@linutronix.de
2025-05-07genirq/manage: Rework __disable_irq_nosync()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065422.013088277@linutronix.de
2025-05-07genirq/manage: Rework irq_set_vcpu_affinity()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/87ikmlq0fk.ffs@tglx
2025-05-07genirq/manage: Rework __irq_apply_affinity_hint()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.897188799@linutronix.de
2025-05-07genirq/manage: Rework irq_update_affinity_desc()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.830357569@linutronix.de
2025-05-07genirq/manage: Convert to lock guardsThomas Gleixner
Convert lock/unlock pairs to guards. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.771476066@linutronix.de
2025-05-07genirq/manage: Cleanup kernel doc commentsThomas Gleixner
Get rid of the extra tab to make it consistent. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.710273122@linutronix.de
2025-05-07genirq/chip: Rework irq_modify_status()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.650454052@linutronix.de
2025-05-07genirq/chip: Rework irq_set_handler() variantsThomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.590753128@linutronix.de
2025-05-07genirq/chip: Rework irq_set_chip_data()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.532308759@linutronix.de
2025-05-07genirq/chip: Rework irq_set_msi_desc_off()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.473563978@linutronix.de
2025-05-07genirq/chip: Rework irq_set_handler_data()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.415072350@linutronix.de
2025-05-07genirq/chip: Rework irq_set_irq_type()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.355673840@linutronix.de
2025-05-07genirq/chip: Rework irq_set_chip()Thomas Gleixner
Use the new guards to get and lock the interrupt descriptor and tidy up the code. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.295400891@linutronix.de
2025-05-07genirq/chip: Use lock guards where applicableThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.236248749@linutronix.de
2025-05-07genirq/chip: Rework handle_fasteoi_mask_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Note: The mask_irq() operation in the second condition was redundant as the interrupt is already masked right at the beginning of the function. Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.175652864@linutronix.de
2025-05-07genirq/chip: Rework handle_fasteoi_ack_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.105015800@linutronix.de
2025-05-07genirq/chip: Rework handle_edge_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065421.045492336@linutronix.de
2025-05-07genirq/chip: Rework handle_eoi_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.986002418@linutronix.de
2025-05-07genirq/chip: Rework handle_level_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.926362488@linutronix.de
2025-05-07genirq/chip: Rework handle_untracked_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.865212916@linutronix.de
2025-05-07genirq/chip: Rework handle_simple_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.804683349@linutronix.de
2025-05-07genirq/chip: Rework handle_nested_irq()Thomas Gleixner
Use the new helpers to decide whether the interrupt should be handled and switch the descriptor locking to guard(). Fixup the kernel doc comment while at it. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.744042890@linutronix.de
2025-05-07genirq/chip: Prepare for code reductionThomas Gleixner
The interrupt flow handlers have similar patterns to decide whether to handle an interrupt or not. Provide common helper functions to allow removal of duplicated code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.682547546@linutronix.de
2025-05-07genirq/debugfs: Convert to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.620200108@linutronix.de
2025-05-07genirq/cpuhotplug: Convert to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.560083665@linutronix.de
2025-05-07genirq/spurious: Switch to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.497714413@linutronix.de
2025-05-07genirq/spurious: Cleanup codeThomas Gleixner
Clean up the coding style No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.437285102@linutronix.de
2025-05-07genirq/proc: Switch to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.373998838@linutronix.de
2025-05-07genirq/resend: Switch to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.312487167@linutronix.de
2025-05-07genirq/pm: Switch to lock guardsThomas Gleixner
Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/20250429065420.251299112@linutronix.de
generated by cgit (git 2.34.1) at 2025-07-23 07:25:42 +0000