Webcpuhp_setup_state_nocalls_cpuslocked(state, name, startup, teardown) For cases where a driver or a subsystem has multiple instances and the same CPU hotplug state callbacks need to be invoked for each instance, the CPU hotplug core provides multi-instance support. The advantage over driver specific instance lists is that the instance … Webcpuhp_store_callbacks() which prevents multiple registrations of callbacks for a given state and due to this race, it returns -EBUSY leading to ETM probe failures like below.

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WebCheck our new training course. Real-Time Linux with PREEMPT_RT. Check our new training course. with Creative Commons CC-BY-SA WebCf. __cpuhp_setup_state_cpuslocked() documentation: Return: On success: Positive state number if @state is CPUHP_AP_ONLINE_DYN; 0 for all other states Indeed, the following: cpuhp_remove_state(CPUHP_AP_ONLINE_DYN); removes the first dynamic states added to the cpuhp state machine. Patches were tested as: - … the international gem \u0026 jewelry show inc

CPU hotplug in the Kernel — The Linux Kernel documentation

Webreturn__cpuhp_setup_state(state, name, true, startup, teardown, false); * cpuhp_setup_state_cpuslocked - Setup hotplug state callbacks with calling. * … Webcpuhp_setup/remove_state[_nocalls]() call cpus_read_lock() as well, which is possible in the current implementation but prevents converting the hotplug locking to a percpu rwsem. … WebOct 27, 2024 · From: Greg Kroah-Hartman <> Subject [PATCH 5.8 228/633] coresight: etm4x: Fix etm4_count race by moving cpuhp callbacks to init: Date: Tue, 27 Oct 2024 14:49:31 +0100 the international friendship camp