Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP hotplug notifier removal from Thomas Gleixner: "This is the final cleanup of the hotplug notifier infrastructure. The series has been reintgrated in the last two days because there came a new driver using the old infrastructure via the SCSI tree. Summary: - convert the last leftover drivers utilizing notifiers - fixup for a completely broken hotplug user - prevent setup of already used states - removal of the notifiers - treewide cleanup of hotplug state names - consolidation of state space There is a sphinx based documentation pending, but that needs review from the documentation folks" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/armada-xp: Consolidate hotplug state space irqchip/gic: Consolidate hotplug state space coresight/etm3/4x: Consolidate hotplug state space cpu/hotplug: Cleanup state names cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions staging/lustre/libcfs: Convert to hotplug state machine scsi/bnx2i: Convert to hotplug state machine scsi/bnx2fc: Convert to hotplug state machine cpu/hotplug: Prevent overwriting of callbacks x86/msr: Remove bogus cleanup from the error path bus: arm-ccn: Prevent hotplug callback leak perf/x86/intel/cstate: Prevent hotplug callback leak ARM/imx/mmcd: Fix broken cpu hotplug handling scsi: qedi: Convert to hotplug state machine
This commit is contained in:
commit
b272f732f8
|
@ -339,7 +339,7 @@ static int __init twd_local_timer_common_register(struct device_node *np)
|
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}
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|
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cpuhp_setup_state_nocalls(CPUHP_AP_ARM_TWD_STARTING,
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"AP_ARM_TWD_STARTING",
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"arm/timer/twd:starting",
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twd_timer_starting_cpu, twd_timer_dying_cpu);
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twd_get_clock(np);
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|
|
|
@ -60,6 +60,7 @@
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#define to_mmdc_pmu(p) container_of(p, struct mmdc_pmu, pmu)
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static enum cpuhp_state cpuhp_mmdc_state;
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static int ddr_type;
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struct fsl_mmdc_devtype_data {
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@ -451,8 +452,8 @@ static int imx_mmdc_remove(struct platform_device *pdev)
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{
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struct mmdc_pmu *pmu_mmdc = platform_get_drvdata(pdev);
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cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
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perf_pmu_unregister(&pmu_mmdc->pmu);
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cpuhp_remove_state_nocalls(CPUHP_ONLINE);
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kfree(pmu_mmdc);
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return 0;
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}
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@ -472,6 +473,18 @@ static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_b
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return -ENOMEM;
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}
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/* The first instance registers the hotplug state */
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if (!cpuhp_mmdc_state) {
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ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
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"perf/arm/mmdc:online", NULL,
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mmdc_pmu_offline_cpu);
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if (ret < 0) {
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pr_err("cpuhp_setup_state_multi failed\n");
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goto pmu_free;
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}
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cpuhp_mmdc_state = ret;
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}
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mmdc_num = mmdc_pmu_init(pmu_mmdc, mmdc_base, &pdev->dev);
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if (mmdc_num == 0)
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name = "mmdc";
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@ -485,26 +498,23 @@ static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_b
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HRTIMER_MODE_REL);
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pmu_mmdc->hrtimer.function = mmdc_pmu_timer_handler;
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cpuhp_state_add_instance_nocalls(CPUHP_ONLINE,
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&pmu_mmdc->node);
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cpumask_set_cpu(smp_processor_id(), &pmu_mmdc->cpu);
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ret = cpuhp_setup_state_multi(CPUHP_AP_NOTIFY_ONLINE,
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"MMDC_ONLINE", NULL,
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mmdc_pmu_offline_cpu);
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if (ret) {
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pr_err("cpuhp_setup_state_multi failure\n");
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goto pmu_register_err;
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}
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cpumask_set_cpu(raw_smp_processor_id(), &pmu_mmdc->cpu);
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/* Register the pmu instance for cpu hotplug */
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cpuhp_state_add_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
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ret = perf_pmu_register(&(pmu_mmdc->pmu), name, -1);
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platform_set_drvdata(pdev, pmu_mmdc);
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if (ret)
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goto pmu_register_err;
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platform_set_drvdata(pdev, pmu_mmdc);
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return 0;
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pmu_register_err:
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pr_warn("MMDC Perf PMU failed (%d), disabled\n", ret);
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cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
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hrtimer_cancel(&pmu_mmdc->hrtimer);
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pmu_free:
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kfree(pmu_mmdc);
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return ret;
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}
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|
|
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@ -148,7 +148,7 @@ static void __init armada_370_coherency_init(struct device_node *np)
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of_node_put(cpu_config_np);
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cpuhp_setup_state_nocalls(CPUHP_AP_ARM_MVEBU_COHERENCY,
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"AP_ARM_MVEBU_COHERENCY",
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"arm/mvebu/coherency:starting",
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armada_xp_clear_l2_starting, NULL);
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exit:
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set_cpu_coherent();
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|
|
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@ -563,7 +563,7 @@ static __init int l2x0_pmu_init(void)
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cpumask_set_cpu(0, &pmu_cpu);
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ret = cpuhp_setup_state_nocalls(CPUHP_AP_PERF_ARM_L2X0_ONLINE,
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"AP_PERF_ARM_L2X0_ONLINE", NULL,
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"perf/arm/l2x0:online", NULL,
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l2x0_pmu_offline_cpu);
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if (ret)
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goto out_pmu;
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|
|
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@ -683,7 +683,7 @@ static void __init l2c310_enable(void __iomem *base, unsigned num_lock)
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if (aux & L310_AUX_CTRL_FULL_LINE_ZERO)
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cpuhp_setup_state(CPUHP_AP_ARM_L2X0_STARTING,
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"AP_ARM_L2X0_STARTING", l2c310_starting_cpu,
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"arm/l2x0:starting", l2c310_starting_cpu,
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l2c310_dying_cpu);
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}
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|
|
|
@ -799,7 +799,7 @@ static int __init vfp_init(void)
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}
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cpuhp_setup_state_nocalls(CPUHP_AP_ARM_VFP_STARTING,
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"AP_ARM_VFP_STARTING", vfp_starting_cpu,
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"arm/vfp:starting", vfp_starting_cpu,
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vfp_dying_cpu);
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vfp_vector = vfp_support_entry;
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|
|
|
@ -412,7 +412,7 @@ static int __init xen_guest_init(void)
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pvclock_gtod_register_notifier(&xen_pvclock_gtod_notifier);
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|
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return cpuhp_setup_state(CPUHP_AP_ARM_XEN_STARTING,
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"AP_ARM_XEN_STARTING", xen_starting_cpu,
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"arm/xen:starting", xen_starting_cpu,
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xen_dying_cpu);
|
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}
|
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early_initcall(xen_guest_init);
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|
|
|
@ -640,7 +640,7 @@ static int __init armv8_deprecated_init(void)
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}
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|
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cpuhp_setup_state_nocalls(CPUHP_AP_ARM64_ISNDEP_STARTING,
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"AP_ARM64_ISNDEP_STARTING",
|
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"arm64/isndep:starting",
|
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run_all_insn_set_hw_mode, NULL);
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register_insn_emulation_sysctl(ctl_abi);
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|
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|
|
|
@ -140,7 +140,7 @@ static int clear_os_lock(unsigned int cpu)
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static int debug_monitors_init(void)
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{
|
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return cpuhp_setup_state(CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
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"CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING",
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"arm64/debug_monitors:starting",
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clear_os_lock, NULL);
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}
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postcore_initcall(debug_monitors_init);
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|
|
|
@ -1001,7 +1001,7 @@ static int __init arch_hw_breakpoint_init(void)
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* debugger will leave the world in a nice state for us.
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*/
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ret = cpuhp_setup_state(CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
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"CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING",
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"perf/arm64/hw_breakpoint:starting",
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hw_breakpoint_reset, NULL);
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if (ret)
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pr_err("failed to register CPU hotplug notifier: %d\n", ret);
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|
|
|
@ -475,7 +475,7 @@ static int __init bfin_pmu_init(void)
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|
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ret = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
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if (!ret)
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cpuhp_setup_state(CPUHP_PERF_BFIN, "PERF_BFIN",
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cpuhp_setup_state(CPUHP_PERF_BFIN,"perf/bfin:starting",
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bfin_pmu_prepare_cpu, NULL);
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return ret;
|
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}
|
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|
|
|
@ -868,7 +868,7 @@ static int __init init_hw_perf_events(void)
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metag_out32(0, PERF_COUNT(1));
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|
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cpuhp_setup_state(CPUHP_AP_PERF_METAG_STARTING,
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"AP_PERF_METAG_STARTING", metag_pmu_starting_cpu,
|
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"perf/metag:starting", metag_pmu_starting_cpu,
|
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NULL);
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|
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ret = perf_pmu_register(&pmu, metag_pmu->name, PERF_TYPE_RAW);
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|
|
|
@ -713,7 +713,7 @@ static int __init cps_pm_init(void)
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pr_warn("pm-cps: no CPC, clock & power gating unavailable\n");
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}
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return cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "AP_PM_CPS_CPU_ONLINE",
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return cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "mips/cps_pm:online",
|
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cps_pm_online_cpu, NULL);
|
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}
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arch_initcall(cps_pm_init);
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|
|
|
@ -186,7 +186,7 @@ static int __init loongson3_init(void)
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{
|
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on_each_cpu(reset_counters, NULL, 1);
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cpuhp_setup_state_nocalls(CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
|
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"AP_MIPS_OP_LOONGSON3_STARTING",
|
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"mips/oprofile/loongson3:starting",
|
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loongson3_starting_cpu, loongson3_dying_cpu);
|
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save_perf_irq = perf_irq;
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perf_irq = loongson3_perfcount_handler;
|
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|
|
|
@ -944,7 +944,7 @@ void __init initmem_init(void)
|
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* _nocalls() + manual invocation is used because cpuhp is not yet
|
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* initialized for the boot CPU.
|
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*/
|
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cpuhp_setup_state_nocalls(CPUHP_POWER_NUMA_PREPARE, "POWER_NUMA_PREPARE",
|
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cpuhp_setup_state_nocalls(CPUHP_POWER_NUMA_PREPARE, "powerpc/numa:prepare",
|
||||
ppc_numa_cpu_prepare, ppc_numa_cpu_dead);
|
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for_each_present_cpu(cpu)
|
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numa_setup_cpu(cpu);
|
||||
|
|
|
@ -2189,7 +2189,7 @@ int register_power_pmu(struct power_pmu *pmu)
|
|||
#endif /* CONFIG_PPC64 */
|
||||
|
||||
perf_pmu_register(&power_pmu, "cpu", PERF_TYPE_RAW);
|
||||
cpuhp_setup_state(CPUHP_PERF_POWER, "PERF_POWER",
|
||||
cpuhp_setup_state(CPUHP_PERF_POWER, "perf/powerpc:prepare",
|
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power_pmu_prepare_cpu, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
|
|
@ -711,7 +711,7 @@ static int __init cpumf_pmu_init(void)
|
|||
return rc;
|
||||
}
|
||||
return cpuhp_setup_state(CPUHP_AP_PERF_S390_CF_ONLINE,
|
||||
"AP_PERF_S390_CF_ONLINE",
|
||||
"perf/s390/cf:online",
|
||||
s390_pmu_online_cpu, s390_pmu_offline_cpu);
|
||||
}
|
||||
early_initcall(cpumf_pmu_init);
|
||||
|
|
|
@ -1623,7 +1623,7 @@ static int __init init_cpum_sampling_pmu(void)
|
|||
goto out;
|
||||
}
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_S390_SF_ONLINE, "AP_PERF_S390_SF_ONLINE",
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_S390_SF_ONLINE, "perf/s390/sf:online",
|
||||
s390_pmu_sf_online_cpu, s390_pmu_sf_offline_cpu);
|
||||
out:
|
||||
return err;
|
||||
|
|
|
@ -371,7 +371,7 @@ static int __init init_vdso(void)
|
|||
|
||||
/* notifier priority > KVM */
|
||||
return cpuhp_setup_state(CPUHP_AP_X86_VDSO_VMA_ONLINE,
|
||||
"AP_X86_VDSO_VMA_ONLINE", vgetcpu_online, NULL);
|
||||
"x86/vdso/vma:online", vgetcpu_online, NULL);
|
||||
}
|
||||
subsys_initcall(init_vdso);
|
||||
#endif /* CONFIG_X86_64 */
|
||||
|
|
|
@ -1010,7 +1010,7 @@ static __init int amd_ibs_init(void)
|
|||
* all online cpus.
|
||||
*/
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
|
||||
"AP_PERF_X86_AMD_IBS_STARTING",
|
||||
"perf/x86/amd/ibs:STARTING",
|
||||
x86_pmu_amd_ibs_starting_cpu,
|
||||
x86_pmu_amd_ibs_dying_cpu);
|
||||
|
||||
|
|
|
@ -291,7 +291,7 @@ static int __init amd_power_pmu_init(void)
|
|||
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
|
||||
"AP_PERF_X86_AMD_POWER_ONLINE",
|
||||
"perf/x86/amd/power:online",
|
||||
power_cpu_init, power_cpu_exit);
|
||||
|
||||
ret = perf_pmu_register(&pmu_class, "power", -1);
|
||||
|
|
|
@ -527,16 +527,16 @@ static int __init amd_uncore_init(void)
|
|||
* Install callbacks. Core will call them for each online cpu.
|
||||
*/
|
||||
if (cpuhp_setup_state(CPUHP_PERF_X86_AMD_UNCORE_PREP,
|
||||
"PERF_X86_AMD_UNCORE_PREP",
|
||||
"perf/x86/amd/uncore:prepare",
|
||||
amd_uncore_cpu_up_prepare, amd_uncore_cpu_dead))
|
||||
goto fail_l2;
|
||||
|
||||
if (cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
|
||||
"AP_PERF_X86_AMD_UNCORE_STARTING",
|
||||
"perf/x86/amd/uncore:starting",
|
||||
amd_uncore_cpu_starting, NULL))
|
||||
goto fail_prep;
|
||||
if (cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
|
||||
"AP_PERF_X86_AMD_UNCORE_ONLINE",
|
||||
"perf/x86/amd/uncore:online",
|
||||
amd_uncore_cpu_online,
|
||||
amd_uncore_cpu_down_prepare))
|
||||
goto fail_start;
|
||||
|
|
|
@ -1820,18 +1820,18 @@ static int __init init_hw_perf_events(void)
|
|||
* Install callbacks. Core will call them for each online
|
||||
* cpu.
|
||||
*/
|
||||
err = cpuhp_setup_state(CPUHP_PERF_X86_PREPARE, "PERF_X86_PREPARE",
|
||||
err = cpuhp_setup_state(CPUHP_PERF_X86_PREPARE, "perf/x86:prepare",
|
||||
x86_pmu_prepare_cpu, x86_pmu_dead_cpu);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = cpuhp_setup_state(CPUHP_AP_PERF_X86_STARTING,
|
||||
"AP_PERF_X86_STARTING", x86_pmu_starting_cpu,
|
||||
"perf/x86:starting", x86_pmu_starting_cpu,
|
||||
x86_pmu_dying_cpu);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
err = cpuhp_setup_state(CPUHP_AP_PERF_X86_ONLINE, "AP_PERF_X86_ONLINE",
|
||||
err = cpuhp_setup_state(CPUHP_AP_PERF_X86_ONLINE, "perf/x86:online",
|
||||
x86_pmu_online_cpu, NULL);
|
||||
if (err)
|
||||
goto out1;
|
||||
|
|
|
@ -1747,9 +1747,9 @@ static int __init intel_cqm_init(void)
|
|||
* is enabled to avoid notifier leak.
|
||||
*/
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_CQM_STARTING,
|
||||
"AP_PERF_X86_CQM_STARTING",
|
||||
"perf/x86/cqm:starting",
|
||||
intel_cqm_cpu_starting, NULL);
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_CQM_ONLINE, "AP_PERF_X86_CQM_ONLINE",
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_CQM_ONLINE, "perf/x86/cqm:online",
|
||||
NULL, intel_cqm_cpu_exit);
|
||||
|
||||
out:
|
||||
|
|
|
@ -594,6 +594,9 @@ static int __init cstate_probe(const struct cstate_model *cm)
|
|||
|
||||
static inline void cstate_cleanup(void)
|
||||
{
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_ONLINE);
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_STARTING);
|
||||
|
||||
if (has_cstate_core)
|
||||
perf_pmu_unregister(&cstate_core_pmu);
|
||||
|
||||
|
@ -606,16 +609,16 @@ static int __init cstate_init(void)
|
|||
int err;
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_CSTATE_STARTING,
|
||||
"AP_PERF_X86_CSTATE_STARTING", cstate_cpu_init,
|
||||
NULL);
|
||||
"perf/x86/cstate:starting", cstate_cpu_init, NULL);
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_CSTATE_ONLINE,
|
||||
"AP_PERF_X86_CSTATE_ONLINE", NULL, cstate_cpu_exit);
|
||||
"perf/x86/cstate:online", NULL, cstate_cpu_exit);
|
||||
|
||||
if (has_cstate_core) {
|
||||
err = perf_pmu_register(&cstate_core_pmu, cstate_core_pmu.name, -1);
|
||||
if (err) {
|
||||
has_cstate_core = false;
|
||||
pr_info("Failed to register cstate core pmu\n");
|
||||
cstate_cleanup();
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
@ -629,8 +632,7 @@ static int __init cstate_init(void)
|
|||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
return err;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init cstate_pmu_init(void)
|
||||
|
@ -655,8 +657,6 @@ module_init(cstate_pmu_init);
|
|||
|
||||
static void __exit cstate_pmu_exit(void)
|
||||
{
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_ONLINE);
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_STARTING);
|
||||
cstate_cleanup();
|
||||
}
|
||||
module_exit(cstate_pmu_exit);
|
||||
|
|
|
@ -803,13 +803,13 @@ static int __init rapl_pmu_init(void)
|
|||
* Install callbacks. Core will call them for each online cpu.
|
||||
*/
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_PERF_X86_RAPL_PREP, "PERF_X86_RAPL_PREP",
|
||||
ret = cpuhp_setup_state(CPUHP_PERF_X86_RAPL_PREP, "perf/x86/rapl:prepare",
|
||||
rapl_cpu_prepare, NULL);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_AP_PERF_X86_RAPL_ONLINE,
|
||||
"AP_PERF_X86_RAPL_ONLINE",
|
||||
"perf/x86/rapl:online",
|
||||
rapl_cpu_online, rapl_cpu_offline);
|
||||
if (ret)
|
||||
goto out1;
|
||||
|
|
|
@ -1398,22 +1398,22 @@ static int __init intel_uncore_init(void)
|
|||
*/
|
||||
if (!cret) {
|
||||
ret = cpuhp_setup_state(CPUHP_PERF_X86_UNCORE_PREP,
|
||||
"PERF_X86_UNCORE_PREP",
|
||||
"perf/x86/intel/uncore:prepare",
|
||||
uncore_cpu_prepare, NULL);
|
||||
if (ret)
|
||||
goto err;
|
||||
} else {
|
||||
cpuhp_setup_state_nocalls(CPUHP_PERF_X86_UNCORE_PREP,
|
||||
"PERF_X86_UNCORE_PREP",
|
||||
"perf/x86/intel/uncore:prepare",
|
||||
uncore_cpu_prepare, NULL);
|
||||
}
|
||||
first_init = 1;
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_UNCORE_STARTING,
|
||||
"AP_PERF_X86_UNCORE_STARTING",
|
||||
"perf/x86/uncore:starting",
|
||||
uncore_cpu_starting, uncore_cpu_dying);
|
||||
first_init = 0;
|
||||
cpuhp_setup_state(CPUHP_AP_PERF_X86_UNCORE_ONLINE,
|
||||
"AP_PERF_X86_UNCORE_ONLINE",
|
||||
"perf/x86/uncore:online",
|
||||
uncore_event_cpu_online, uncore_event_cpu_offline);
|
||||
return 0;
|
||||
|
||||
|
|
|
@ -234,7 +234,7 @@ static __init int apbt_late_init(void)
|
|||
if (intel_mid_timer_options == INTEL_MID_TIMER_LAPIC_APBT ||
|
||||
!apb_timer_block_enabled)
|
||||
return 0;
|
||||
return cpuhp_setup_state(CPUHP_X86_APB_DEAD, "X86_APB_DEAD", NULL,
|
||||
return cpuhp_setup_state(CPUHP_X86_APB_DEAD, "x86/apb:dead", NULL,
|
||||
apbt_cpu_dead);
|
||||
}
|
||||
fs_initcall(apbt_late_init);
|
||||
|
|
|
@ -191,7 +191,7 @@ static int x2apic_cluster_probe(void)
|
|||
if (!x2apic_mode)
|
||||
return 0;
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_X2APIC_PREPARE, "X2APIC_PREPARE",
|
||||
ret = cpuhp_setup_state(CPUHP_X2APIC_PREPARE, "x86/x2apic:prepare",
|
||||
x2apic_prepare_cpu, x2apic_dead_cpu);
|
||||
if (ret < 0) {
|
||||
pr_err("Failed to register X2APIC_PREPARE\n");
|
||||
|
|
|
@ -1051,11 +1051,11 @@ static __init int hpet_late_init(void)
|
|||
return 0;
|
||||
|
||||
/* This notifier should be called after workqueue is ready */
|
||||
ret = cpuhp_setup_state(CPUHP_AP_X86_HPET_ONLINE, "AP_X86_HPET_ONLINE",
|
||||
ret = cpuhp_setup_state(CPUHP_AP_X86_HPET_ONLINE, "x86/hpet:online",
|
||||
hpet_cpuhp_online, NULL);
|
||||
if (ret)
|
||||
return ret;
|
||||
ret = cpuhp_setup_state(CPUHP_X86_HPET_DEAD, "X86_HPET_DEAD", NULL,
|
||||
ret = cpuhp_setup_state(CPUHP_X86_HPET_DEAD, "x86/hpet:dead", NULL,
|
||||
hpet_cpuhp_dead);
|
||||
if (ret)
|
||||
goto err_cpuhp;
|
||||
|
|
|
@ -224,7 +224,6 @@ static int __init msr_init(void)
|
|||
return 0;
|
||||
|
||||
out_class:
|
||||
cpuhp_remove_state(cpuhp_msr_state);
|
||||
class_destroy(msr_class);
|
||||
out_chrdev:
|
||||
__unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr");
|
||||
|
|
|
@ -408,7 +408,7 @@ static __init int tboot_late_init(void)
|
|||
tboot_create_trampoline();
|
||||
|
||||
atomic_set(&ap_wfs_count, 0);
|
||||
cpuhp_setup_state(CPUHP_AP_X86_TBOOT_DYING, "AP_X86_TBOOT_DYING", NULL,
|
||||
cpuhp_setup_state(CPUHP_AP_X86_TBOOT_DYING, "x86/tboot:dying", NULL,
|
||||
tboot_dying_cpu);
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
debugfs_create_file("tboot_log", S_IRUSR,
|
||||
|
|
|
@ -5855,7 +5855,7 @@ static void kvm_timer_init(void)
|
|||
}
|
||||
pr_debug("kvm: max_tsc_khz = %ld\n", max_tsc_khz);
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_X86_KVM_CLK_ONLINE, "AP_X86_KVM_CLK_ONLINE",
|
||||
cpuhp_setup_state(CPUHP_AP_X86_KVM_CLK_ONLINE, "x86/kvm/clk:online",
|
||||
kvmclock_cpu_online, kvmclock_cpu_down_prep);
|
||||
}
|
||||
|
||||
|
|
|
@ -1529,11 +1529,11 @@ static int xen_cpuhp_setup(void)
|
|||
int rc;
|
||||
|
||||
rc = cpuhp_setup_state_nocalls(CPUHP_XEN_PREPARE,
|
||||
"XEN_HVM_GUEST_PREPARE",
|
||||
"x86/xen/hvm_guest:prepare",
|
||||
xen_cpu_up_prepare, xen_cpu_dead);
|
||||
if (rc >= 0) {
|
||||
rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"XEN_HVM_GUEST_ONLINE",
|
||||
"x86/xen/hvm_guest:online",
|
||||
xen_cpu_up_online, NULL);
|
||||
if (rc < 0)
|
||||
cpuhp_remove_state_nocalls(CPUHP_XEN_PREPARE);
|
||||
|
|
|
@ -422,7 +422,7 @@ static int __init xtensa_pmu_init(void)
|
|||
int irq = irq_create_mapping(NULL, XCHAL_PROFILING_INTERRUPT);
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_AP_PERF_XTENSA_STARTING,
|
||||
"AP_PERF_XTENSA_STARTING", xtensa_pmu_setup,
|
||||
"perf/xtensa:starting", xtensa_pmu_setup,
|
||||
NULL);
|
||||
if (ret) {
|
||||
pr_err("xtensa_pmu: failed to register CPU-hotplug.\n");
|
||||
|
|
|
@ -1796,7 +1796,7 @@ static int __init cci_platform_init(void)
|
|||
int ret;
|
||||
|
||||
ret = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_CCI_ONLINE,
|
||||
"AP_PERF_ARM_CCI_ONLINE", NULL,
|
||||
"perf/arm/cci:online", NULL,
|
||||
cci_pmu_offline_cpu);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
|
@ -1562,7 +1562,7 @@ static int __init arm_ccn_init(void)
|
|||
int i, ret;
|
||||
|
||||
ret = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_CCN_ONLINE,
|
||||
"AP_PERF_ARM_CCN_ONLINE", NULL,
|
||||
"perf/arm/ccn:online", NULL,
|
||||
arm_ccn_pmu_offline_cpu);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
@ -1570,7 +1570,10 @@ static int __init arm_ccn_init(void)
|
|||
for (i = 0; i < ARRAY_SIZE(arm_ccn_pmu_events); i++)
|
||||
arm_ccn_pmu_events_attrs[i] = &arm_ccn_pmu_events[i].attr.attr;
|
||||
|
||||
return platform_driver_register(&arm_ccn_driver);
|
||||
ret = platform_driver_register(&arm_ccn_driver);
|
||||
if (ret)
|
||||
cpuhp_remove_multi_state(CPUHP_AP_PERF_ARM_CCN_ONLINE);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit arm_ccn_exit(void)
|
||||
|
|
|
@ -309,7 +309,7 @@ static int __init arc_clockevent_setup(struct device_node *node)
|
|||
}
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_AP_ARC_TIMER_STARTING,
|
||||
"AP_ARC_TIMER_STARTING",
|
||||
"clockevents/arc/timer:starting",
|
||||
arc_timer_starting_cpu,
|
||||
arc_timer_dying_cpu);
|
||||
if (ret) {
|
||||
|
|
|
@ -738,7 +738,7 @@ static int __init arch_timer_register(void)
|
|||
|
||||
/* Register and immediately configure the timer on the boot CPU */
|
||||
err = cpuhp_setup_state(CPUHP_AP_ARM_ARCH_TIMER_STARTING,
|
||||
"AP_ARM_ARCH_TIMER_STARTING",
|
||||
"clockevents/arm/arch_timer:starting",
|
||||
arch_timer_starting_cpu, arch_timer_dying_cpu);
|
||||
if (err)
|
||||
goto out_unreg_cpupm;
|
||||
|
|
|
@ -316,7 +316,7 @@ static int __init global_timer_of_register(struct device_node *np)
|
|||
goto out_irq;
|
||||
|
||||
err = cpuhp_setup_state(CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
|
||||
"AP_ARM_GLOBAL_TIMER_STARTING",
|
||||
"clockevents/arm/global_timer:starting",
|
||||
gt_starting_cpu, gt_dying_cpu);
|
||||
if (err)
|
||||
goto out_irq;
|
||||
|
|
|
@ -34,7 +34,7 @@ static int dummy_timer_starting_cpu(unsigned int cpu)
|
|||
static int __init dummy_timer_register(void)
|
||||
{
|
||||
return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
|
||||
"AP_DUMMY_TIMER_STARTING",
|
||||
"clockevents/dummy_timer:starting",
|
||||
dummy_timer_starting_cpu, NULL);
|
||||
}
|
||||
early_initcall(dummy_timer_register);
|
||||
|
|
|
@ -552,7 +552,7 @@ static int __init exynos4_timer_resources(struct device_node *np, void __iomem *
|
|||
|
||||
/* Install hotplug callbacks which configure the timer on this CPU */
|
||||
err = cpuhp_setup_state(CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
|
||||
"AP_EXYNOS4_MCT_TIMER_STARTING",
|
||||
"clockevents/exynos4/mct_timer:starting",
|
||||
exynos4_mct_starting_cpu,
|
||||
exynos4_mct_dying_cpu);
|
||||
if (err)
|
||||
|
|
|
@ -240,7 +240,7 @@ static int __init jcore_pit_init(struct device_node *node)
|
|||
}
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_JCORE_TIMER_STARTING,
|
||||
"AP_JCORE_TIMER_STARTING",
|
||||
"clockevents/jcore:starting",
|
||||
jcore_pit_local_init, NULL);
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -154,6 +154,6 @@ int __init metag_generic_timer_init(void)
|
|||
|
||||
/* Hook cpu boot to configure the CPU's timers */
|
||||
return cpuhp_setup_state(CPUHP_AP_METAG_TIMER_STARTING,
|
||||
"AP_METAG_TIMER_STARTING",
|
||||
"clockevents/metag:starting",
|
||||
arch_timer_starting_cpu, NULL);
|
||||
}
|
||||
|
|
|
@ -120,8 +120,8 @@ static int gic_clockevent_init(void)
|
|||
}
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_MIPS_GIC_TIMER_STARTING,
|
||||
"AP_MIPS_GIC_TIMER_STARTING", gic_starting_cpu,
|
||||
gic_dying_cpu);
|
||||
"clockevents/mips/gic/timer:starting",
|
||||
gic_starting_cpu, gic_dying_cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
@ -182,7 +182,7 @@ static int __init msm_timer_init(u32 dgt_hz, int sched_bits, int irq,
|
|||
} else {
|
||||
/* Install and invoke hotplug callbacks */
|
||||
res = cpuhp_setup_state(CPUHP_AP_QCOM_TIMER_STARTING,
|
||||
"AP_QCOM_TIMER_STARTING",
|
||||
"clockevents/qcom/timer:starting",
|
||||
msm_local_timer_starting_cpu,
|
||||
msm_local_timer_dying_cpu);
|
||||
if (res) {
|
||||
|
|
|
@ -320,7 +320,7 @@ static int __init armada_370_xp_timer_common_init(struct device_node *np)
|
|||
}
|
||||
|
||||
res = cpuhp_setup_state(CPUHP_AP_ARMADA_TIMER_STARTING,
|
||||
"AP_ARMADA_TIMER_STARTING",
|
||||
"clockevents/armada:starting",
|
||||
armada_370_xp_timer_starting_cpu,
|
||||
armada_370_xp_timer_dying_cpu);
|
||||
if (res) {
|
||||
|
|
|
@ -221,7 +221,7 @@ static int __init sirfsoc_clockevent_init(void)
|
|||
|
||||
/* Install and invoke hotplug callbacks */
|
||||
return cpuhp_setup_state(CPUHP_AP_MARCO_TIMER_STARTING,
|
||||
"AP_MARCO_TIMER_STARTING",
|
||||
"clockevents/marco:starting",
|
||||
sirfsoc_local_timer_starting_cpu,
|
||||
sirfsoc_local_timer_dying_cpu);
|
||||
}
|
||||
|
|
|
@ -804,10 +804,10 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
|
||||
if (!etm_count++) {
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CORESIGHT_STARTING,
|
||||
"AP_ARM_CORESIGHT_STARTING",
|
||||
"arm/coresight:starting",
|
||||
etm_starting_cpu, etm_dying_cpu);
|
||||
ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"AP_ARM_CORESIGHT_ONLINE",
|
||||
"arm/coresight:online",
|
||||
etm_online_cpu, NULL);
|
||||
if (ret < 0)
|
||||
goto err_arch_supported;
|
||||
|
|
|
@ -986,11 +986,11 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
dev_err(dev, "ETM arch init failed\n");
|
||||
|
||||
if (!etm4_count++) {
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CORESIGHT4_STARTING,
|
||||
"AP_ARM_CORESIGHT4_STARTING",
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_ARM_CORESIGHT_STARTING,
|
||||
"arm/coresight4:starting",
|
||||
etm4_starting_cpu, etm4_dying_cpu);
|
||||
ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"AP_ARM_CORESIGHT4_ONLINE",
|
||||
"arm/coresight4:online",
|
||||
etm4_online_cpu, NULL);
|
||||
if (ret < 0)
|
||||
goto err_arch_supported;
|
||||
|
@ -1037,7 +1037,7 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
|
||||
err_arch_supported:
|
||||
if (--etm4_count == 0) {
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_ARM_CORESIGHT4_STARTING);
|
||||
cpuhp_remove_state_nocalls(CPUHP_AP_ARM_CORESIGHT_STARTING);
|
||||
if (hp_online)
|
||||
cpuhp_remove_state_nocalls(hp_online);
|
||||
}
|
||||
|
|
|
@ -578,13 +578,13 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
|
|||
#ifdef CONFIG_SMP
|
||||
set_smp_cross_call(armada_mpic_send_doorbell);
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_ARMADA_XP_STARTING,
|
||||
"AP_IRQ_ARMADA_XP_STARTING",
|
||||
"irqchip/armada/ipi:starting",
|
||||
armada_xp_mpic_starting_cpu, NULL);
|
||||
#endif
|
||||
} else {
|
||||
#ifdef CONFIG_SMP
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
|
||||
"AP_IRQ_ARMADA_CASC_STARTING",
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_ARMADA_XP_STARTING,
|
||||
"irqchip/armada/cascade:starting",
|
||||
mpic_cascaded_starting_cpu, NULL);
|
||||
#endif
|
||||
irq_set_chained_handler(parent_irq,
|
||||
|
|
|
@ -245,7 +245,7 @@ bcm2836_arm_irqchip_smp_init(void)
|
|||
#ifdef CONFIG_SMP
|
||||
/* Unmask IPIs to the boot CPU. */
|
||||
cpuhp_setup_state(CPUHP_AP_IRQ_BCM2836_STARTING,
|
||||
"AP_IRQ_BCM2836_STARTING", bcm2836_cpu_starting,
|
||||
"irqchip/bcm2836:starting", bcm2836_cpu_starting,
|
||||
bcm2836_cpu_dying);
|
||||
|
||||
set_smp_cross_call(bcm2836_arm_irqchip_send_ipi);
|
||||
|
|
|
@ -632,9 +632,9 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
|
|||
static void gic_smp_init(void)
|
||||
{
|
||||
set_smp_cross_call(gic_raise_softirq);
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_GICV3_STARTING,
|
||||
"AP_IRQ_GICV3_STARTING", gic_starting_cpu,
|
||||
NULL);
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_GIC_STARTING,
|
||||
"irqchip/arm/gicv3:starting",
|
||||
gic_starting_cpu, NULL);
|
||||
}
|
||||
|
||||
static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
|
||||
|
|
|
@ -1191,7 +1191,7 @@ static int __init __gic_init_bases(struct gic_chip_data *gic,
|
|||
set_smp_cross_call(gic_raise_softirq);
|
||||
#endif
|
||||
cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_GIC_STARTING,
|
||||
"AP_IRQ_GIC_STARTING",
|
||||
"irqchip/arm/gic:starting",
|
||||
gic_starting_cpu, NULL);
|
||||
set_handle_irq(gic_handle_irq);
|
||||
if (static_key_true(&supports_deactivate))
|
||||
|
|
|
@ -407,7 +407,7 @@ hip04_of_init(struct device_node *node, struct device_node *parent)
|
|||
set_handle_irq(hip04_handle_irq);
|
||||
|
||||
hip04_irq_dist_init(&hip04_data);
|
||||
cpuhp_setup_state(CPUHP_AP_IRQ_HIP04_STARTING, "AP_IRQ_HIP04_STARTING",
|
||||
cpuhp_setup_state(CPUHP_AP_IRQ_HIP04_STARTING, "irqchip/hip04:starting",
|
||||
hip04_irq_starting_cpu, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
|
|
@ -127,7 +127,7 @@ static int __init ledtrig_cpu_init(void)
|
|||
|
||||
register_syscore_ops(&ledtrig_cpu_syscore_ops);
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "AP_LEDTRIG_STARTING",
|
||||
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "leds/trigger:starting",
|
||||
ledtrig_online_cpu, ledtrig_prepare_down_cpu);
|
||||
if (ret < 0)
|
||||
pr_err("CPU hotplug notifier for ledtrig-cpu could not be registered: %d\n",
|
||||
|
|
|
@ -2484,13 +2484,13 @@ static __init int virtio_net_driver_init(void)
|
|||
{
|
||||
int ret;
|
||||
|
||||
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "AP_VIRT_NET_ONLINE",
|
||||
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "virtio/net:online",
|
||||
virtnet_cpu_online,
|
||||
virtnet_cpu_down_prep);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
virtionet_online = ret;
|
||||
ret = cpuhp_setup_state_multi(CPUHP_VIRT_NET_DEAD, "VIRT_NET_DEAD",
|
||||
ret = cpuhp_setup_state_multi(CPUHP_VIRT_NET_DEAD, "virtio/net:dead",
|
||||
NULL, virtnet_cpu_dead);
|
||||
if (ret)
|
||||
goto err_dead;
|
||||
|
|
|
@ -1084,7 +1084,7 @@ static int arm_pmu_hp_init(void)
|
|||
int ret;
|
||||
|
||||
ret = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_STARTING,
|
||||
"AP_PERF_ARM_STARTING",
|
||||
"perf/arm/pmu:starting",
|
||||
arm_perf_starting_cpu, NULL);
|
||||
if (ret)
|
||||
pr_err("CPU hotplug notifier for ARM PMU could not be registered: %d\n",
|
||||
|
|
|
@ -127,13 +127,6 @@ module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR);
|
|||
MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is "
|
||||
"initiating a FIP keep alive when debug logging is enabled.");
|
||||
|
||||
static int bnx2fc_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu);
|
||||
/* notification function for CPU hotplug events */
|
||||
static struct notifier_block bnx2fc_cpu_notifier = {
|
||||
.notifier_call = bnx2fc_cpu_callback,
|
||||
};
|
||||
|
||||
static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport)
|
||||
{
|
||||
return ((struct bnx2fc_interface *)
|
||||
|
@ -2622,37 +2615,19 @@ static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
|
|||
kthread_stop(thread);
|
||||
}
|
||||
|
||||
/**
|
||||
* bnx2fc_cpu_callback - Handler for CPU hotplug events
|
||||
*
|
||||
* @nfb: The callback data block
|
||||
* @action: The event triggering the callback
|
||||
* @hcpu: The index of the CPU that the event is for
|
||||
*
|
||||
* This creates or destroys per-CPU data for fcoe
|
||||
*
|
||||
* Returns NOTIFY_OK always.
|
||||
*/
|
||||
static int bnx2fc_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
unsigned cpu = (unsigned long)hcpu;
|
||||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
static int bnx2fc_cpu_online(unsigned int cpu)
|
||||
{
|
||||
printk(PFX "CPU %x online: Create Rx thread\n", cpu);
|
||||
bnx2fc_percpu_thread_create(cpu);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bnx2fc_cpu_dead(unsigned int cpu)
|
||||
{
|
||||
printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
|
||||
bnx2fc_percpu_thread_destroy(cpu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return NOTIFY_OK;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bnx2fc_slave_configure(struct scsi_device *sdev)
|
||||
|
@ -2664,6 +2639,8 @@ static int bnx2fc_slave_configure(struct scsi_device *sdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static enum cpuhp_state bnx2fc_online_state;
|
||||
|
||||
/**
|
||||
* bnx2fc_mod_init - module init entry point
|
||||
*
|
||||
|
@ -2724,21 +2701,31 @@ static int __init bnx2fc_mod_init(void)
|
|||
spin_lock_init(&p->fp_work_lock);
|
||||
}
|
||||
|
||||
cpu_notifier_register_begin();
|
||||
get_online_cpus();
|
||||
|
||||
for_each_online_cpu(cpu) {
|
||||
for_each_online_cpu(cpu)
|
||||
bnx2fc_percpu_thread_create(cpu);
|
||||
}
|
||||
|
||||
/* Initialize per CPU interrupt thread */
|
||||
__register_hotcpu_notifier(&bnx2fc_cpu_notifier);
|
||||
rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"scsi/bnx2fc:online",
|
||||
bnx2fc_cpu_online, NULL);
|
||||
if (rc < 0)
|
||||
goto stop_threads;
|
||||
bnx2fc_online_state = rc;
|
||||
|
||||
cpu_notifier_register_done();
|
||||
cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD, "scsi/bnx2fc:dead",
|
||||
NULL, bnx2fc_cpu_dead);
|
||||
put_online_cpus();
|
||||
|
||||
cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
|
||||
|
||||
return 0;
|
||||
|
||||
stop_threads:
|
||||
for_each_online_cpu(cpu)
|
||||
bnx2fc_percpu_thread_destroy(cpu);
|
||||
put_online_cpus();
|
||||
kthread_stop(l2_thread);
|
||||
free_wq:
|
||||
destroy_workqueue(bnx2fc_wq);
|
||||
release_bt:
|
||||
|
@ -2797,16 +2784,16 @@ static void __exit bnx2fc_mod_exit(void)
|
|||
if (l2_thread)
|
||||
kthread_stop(l2_thread);
|
||||
|
||||
cpu_notifier_register_begin();
|
||||
|
||||
get_online_cpus();
|
||||
/* Destroy per cpu threads */
|
||||
for_each_online_cpu(cpu) {
|
||||
bnx2fc_percpu_thread_destroy(cpu);
|
||||
}
|
||||
|
||||
__unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
|
||||
cpuhp_remove_state_nocalls(bnx2fc_online_state);
|
||||
cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD);
|
||||
|
||||
cpu_notifier_register_done();
|
||||
put_online_cpus();
|
||||
|
||||
destroy_workqueue(bnx2fc_wq);
|
||||
/*
|
||||
|
|
|
@ -70,14 +70,6 @@ u64 iscsi_error_mask = 0x00;
|
|||
|
||||
DEFINE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu);
|
||||
|
||||
static int bnx2i_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu);
|
||||
/* notification function for CPU hotplug events */
|
||||
static struct notifier_block bnx2i_cpu_notifier = {
|
||||
.notifier_call = bnx2i_cpu_callback,
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* bnx2i_identify_device - identifies NetXtreme II device type
|
||||
* @hba: Adapter structure pointer
|
||||
|
@ -461,41 +453,21 @@ static void bnx2i_percpu_thread_destroy(unsigned int cpu)
|
|||
kthread_stop(thread);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* bnx2i_cpu_callback - Handler for CPU hotplug events
|
||||
*
|
||||
* @nfb: The callback data block
|
||||
* @action: The event triggering the callback
|
||||
* @hcpu: The index of the CPU that the event is for
|
||||
*
|
||||
* This creates or destroys per-CPU data for iSCSI
|
||||
*
|
||||
* Returns NOTIFY_OK always.
|
||||
*/
|
||||
static int bnx2i_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu)
|
||||
static int bnx2i_cpu_online(unsigned int cpu)
|
||||
{
|
||||
unsigned cpu = (unsigned long)hcpu;
|
||||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
printk(KERN_INFO "bnx2i: CPU %x online: Create Rx thread\n",
|
||||
cpu);
|
||||
pr_info("bnx2i: CPU %x online: Create Rx thread\n", cpu);
|
||||
bnx2i_percpu_thread_create(cpu);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
printk(KERN_INFO "CPU %x offline: Remove Rx thread\n", cpu);
|
||||
bnx2i_percpu_thread_destroy(cpu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return NOTIFY_OK;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bnx2i_cpu_dead(unsigned int cpu)
|
||||
{
|
||||
pr_info("CPU %x offline: Remove Rx thread\n", cpu);
|
||||
bnx2i_percpu_thread_destroy(cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static enum cpuhp_state bnx2i_online_state;
|
||||
|
||||
/**
|
||||
* bnx2i_mod_init - module init entry point
|
||||
|
@ -539,18 +511,28 @@ static int __init bnx2i_mod_init(void)
|
|||
p->iothread = NULL;
|
||||
}
|
||||
|
||||
cpu_notifier_register_begin();
|
||||
get_online_cpus();
|
||||
|
||||
for_each_online_cpu(cpu)
|
||||
bnx2i_percpu_thread_create(cpu);
|
||||
|
||||
/* Initialize per CPU interrupt thread */
|
||||
__register_hotcpu_notifier(&bnx2i_cpu_notifier);
|
||||
|
||||
cpu_notifier_register_done();
|
||||
err = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"scsi/bnx2i:online",
|
||||
bnx2i_cpu_online, NULL);
|
||||
if (err < 0)
|
||||
goto remove_threads;
|
||||
bnx2i_online_state = err;
|
||||
|
||||
cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2I_DEAD, "scsi/bnx2i:dead",
|
||||
NULL, bnx2i_cpu_dead);
|
||||
put_online_cpus();
|
||||
return 0;
|
||||
|
||||
remove_threads:
|
||||
for_each_online_cpu(cpu)
|
||||
bnx2i_percpu_thread_destroy(cpu);
|
||||
put_online_cpus();
|
||||
cnic_unregister_driver(CNIC_ULP_ISCSI);
|
||||
unreg_xport:
|
||||
iscsi_unregister_transport(&bnx2i_iscsi_transport);
|
||||
out:
|
||||
|
@ -587,14 +569,14 @@ static void __exit bnx2i_mod_exit(void)
|
|||
}
|
||||
mutex_unlock(&bnx2i_dev_lock);
|
||||
|
||||
cpu_notifier_register_begin();
|
||||
get_online_cpus();
|
||||
|
||||
for_each_online_cpu(cpu)
|
||||
bnx2i_percpu_thread_destroy(cpu);
|
||||
|
||||
__unregister_hotcpu_notifier(&bnx2i_cpu_notifier);
|
||||
|
||||
cpu_notifier_register_done();
|
||||
cpuhp_remove_state_nocalls(bnx2i_online_state);
|
||||
cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2I_DEAD);
|
||||
put_online_cpus();
|
||||
|
||||
iscsi_unregister_transport(&bnx2i_iscsi_transport);
|
||||
cnic_unregister_driver(CNIC_ULP_ISCSI);
|
||||
|
|
|
@ -1612,30 +1612,29 @@ static int qedi_percpu_io_thread(void *arg)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void qedi_percpu_thread_create(unsigned int cpu)
|
||||
static int qedi_cpu_online(unsigned int cpu)
|
||||
{
|
||||
struct qedi_percpu_s *p;
|
||||
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
|
||||
struct task_struct *thread;
|
||||
|
||||
p = &per_cpu(qedi_percpu, cpu);
|
||||
|
||||
thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
|
||||
cpu_to_node(cpu),
|
||||
"qedi_thread/%d", cpu);
|
||||
if (likely(!IS_ERR(thread))) {
|
||||
if (IS_ERR(thread))
|
||||
return PTR_ERR(thread);
|
||||
|
||||
kthread_bind(thread, cpu);
|
||||
p->iothread = thread;
|
||||
wake_up_process(thread);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void qedi_percpu_thread_destroy(unsigned int cpu)
|
||||
static int qedi_cpu_offline(unsigned int cpu)
|
||||
{
|
||||
struct qedi_percpu_s *p;
|
||||
struct task_struct *thread;
|
||||
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
|
||||
struct qedi_work *work, *tmp;
|
||||
struct task_struct *thread;
|
||||
|
||||
p = &per_cpu(qedi_percpu, cpu);
|
||||
spin_lock_bh(&p->p_work_lock);
|
||||
thread = p->iothread;
|
||||
p->iothread = NULL;
|
||||
|
@ -1650,35 +1649,9 @@ static void qedi_percpu_thread_destroy(unsigned int cpu)
|
|||
spin_unlock_bh(&p->p_work_lock);
|
||||
if (thread)
|
||||
kthread_stop(thread);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qedi_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
unsigned int cpu = (unsigned long)hcpu;
|
||||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
QEDI_ERR(NULL, "CPU %d online.\n", cpu);
|
||||
qedi_percpu_thread_create(cpu);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
QEDI_ERR(NULL, "CPU %d offline.\n", cpu);
|
||||
qedi_percpu_thread_destroy(cpu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return NOTIFY_OK;
|
||||
}
|
||||
|
||||
static struct notifier_block qedi_cpu_notifier = {
|
||||
.notifier_call = qedi_cpu_callback,
|
||||
};
|
||||
|
||||
void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
|
||||
{
|
||||
struct qed_ll2_params params;
|
||||
|
@ -2038,6 +2011,8 @@ static struct pci_device_id qedi_pci_tbl[] = {
|
|||
};
|
||||
MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
|
||||
|
||||
static enum cpuhp_state qedi_cpuhp_state;
|
||||
|
||||
static struct pci_driver qedi_pci_driver = {
|
||||
.name = QEDI_MODULE_NAME,
|
||||
.id_table = qedi_pci_tbl,
|
||||
|
@ -2047,16 +2022,13 @@ static struct pci_driver qedi_pci_driver = {
|
|||
|
||||
static int __init qedi_init(void)
|
||||
{
|
||||
int rc = 0;
|
||||
int ret;
|
||||
struct qedi_percpu_s *p;
|
||||
unsigned int cpu = 0;
|
||||
int cpu, rc = 0;
|
||||
|
||||
qedi_ops = qed_get_iscsi_ops();
|
||||
if (!qedi_ops) {
|
||||
QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
|
||||
rc = -EINVAL;
|
||||
goto exit_qedi_init_0;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
|
@ -2070,15 +2042,6 @@ static int __init qedi_init(void)
|
|||
goto exit_qedi_init_1;
|
||||
}
|
||||
|
||||
register_hotcpu_notifier(&qedi_cpu_notifier);
|
||||
|
||||
ret = pci_register_driver(&qedi_pci_driver);
|
||||
if (ret) {
|
||||
QEDI_ERR(NULL, "Failed to register driver\n");
|
||||
rc = -EINVAL;
|
||||
goto exit_qedi_init_2;
|
||||
}
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
p = &per_cpu(qedi_percpu, cpu);
|
||||
INIT_LIST_HEAD(&p->work_list);
|
||||
|
@ -2086,11 +2049,22 @@ static int __init qedi_init(void)
|
|||
p->iothread = NULL;
|
||||
}
|
||||
|
||||
for_each_online_cpu(cpu)
|
||||
qedi_percpu_thread_create(cpu);
|
||||
rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
|
||||
qedi_cpu_online, qedi_cpu_offline);
|
||||
if (rc < 0)
|
||||
goto exit_qedi_init_2;
|
||||
qedi_cpuhp_state = rc;
|
||||
|
||||
return rc;
|
||||
rc = pci_register_driver(&qedi_pci_driver);
|
||||
if (rc) {
|
||||
QEDI_ERR(NULL, "Failed to register driver\n");
|
||||
goto exit_qedi_hp;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
exit_qedi_hp:
|
||||
cpuhp_remove_state(qedi_cpuhp_state);
|
||||
exit_qedi_init_2:
|
||||
iscsi_unregister_transport(&qedi_iscsi_transport);
|
||||
exit_qedi_init_1:
|
||||
|
@ -2098,19 +2072,13 @@ exit_qedi_init_1:
|
|||
qedi_dbg_exit();
|
||||
#endif
|
||||
qed_put_iscsi_ops();
|
||||
exit_qedi_init_0:
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void __exit qedi_cleanup(void)
|
||||
{
|
||||
unsigned int cpu = 0;
|
||||
|
||||
for_each_online_cpu(cpu)
|
||||
qedi_percpu_thread_destroy(cpu);
|
||||
|
||||
pci_unregister_driver(&qedi_pci_driver);
|
||||
unregister_hotcpu_notifier(&qedi_cpu_notifier);
|
||||
cpuhp_remove_state(qedi_cpuhp_state);
|
||||
iscsi_unregister_transport(&qedi_iscsi_transport);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
|
|
|
@ -967,48 +967,38 @@ cfs_cpt_table_create_pattern(char *pattern)
|
|||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
static int
|
||||
cfs_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
|
||||
{
|
||||
unsigned int cpu = (unsigned long)hcpu;
|
||||
bool warn;
|
||||
static enum cpuhp_state lustre_cpu_online;
|
||||
|
||||
switch (action) {
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
static void cfs_cpu_incr_cpt_version(void)
|
||||
{
|
||||
spin_lock(&cpt_data.cpt_lock);
|
||||
cpt_data.cpt_version++;
|
||||
spin_unlock(&cpt_data.cpt_lock);
|
||||
/* Fall through */
|
||||
default:
|
||||
if (action != CPU_DEAD && action != CPU_DEAD_FROZEN) {
|
||||
CDEBUG(D_INFO, "CPU changed [cpu %u action %lx]\n",
|
||||
cpu, action);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static int cfs_cpu_online(unsigned int cpu)
|
||||
{
|
||||
cfs_cpu_incr_cpt_version();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cfs_cpu_dead(unsigned int cpu)
|
||||
{
|
||||
bool warn;
|
||||
|
||||
cfs_cpu_incr_cpt_version();
|
||||
|
||||
mutex_lock(&cpt_data.cpt_mutex);
|
||||
/* if all HTs in a core are offline, it may break affinity */
|
||||
cpumask_copy(cpt_data.cpt_cpumask,
|
||||
topology_sibling_cpumask(cpu));
|
||||
cpumask_copy(cpt_data.cpt_cpumask, topology_sibling_cpumask(cpu));
|
||||
warn = cpumask_any_and(cpt_data.cpt_cpumask,
|
||||
cpu_online_mask) >= nr_cpu_ids;
|
||||
mutex_unlock(&cpt_data.cpt_mutex);
|
||||
CDEBUG(warn ? D_WARNING : D_INFO,
|
||||
"Lustre: can't support CPU plug-out well now, performance and stability could be impacted [CPU %u action: %lx]\n",
|
||||
cpu, action);
|
||||
}
|
||||
|
||||
return NOTIFY_OK;
|
||||
"Lustre: can't support CPU plug-out well now, performance and stability could be impacted [CPU %u]\n",
|
||||
cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct notifier_block cfs_cpu_notifier = {
|
||||
.notifier_call = cfs_cpu_notify,
|
||||
.priority = 0
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
void
|
||||
|
@ -1018,7 +1008,9 @@ cfs_cpu_fini(void)
|
|||
cfs_cpt_table_free(cfs_cpt_table);
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
unregister_hotcpu_notifier(&cfs_cpu_notifier);
|
||||
if (lustre_cpu_online > 0)
|
||||
cpuhp_remove_state_nocalls(lustre_cpu_online);
|
||||
cpuhp_remove_state_nocalls(CPUHP_LUSTRE_CFS_DEAD);
|
||||
#endif
|
||||
if (cpt_data.cpt_cpumask)
|
||||
LIBCFS_FREE(cpt_data.cpt_cpumask, cpumask_size());
|
||||
|
@ -1027,6 +1019,8 @@ cfs_cpu_fini(void)
|
|||
int
|
||||
cfs_cpu_init(void)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
LASSERT(!cfs_cpt_table);
|
||||
|
||||
memset(&cpt_data, 0, sizeof(cpt_data));
|
||||
|
@ -1041,8 +1035,19 @@ cfs_cpu_init(void)
|
|||
mutex_init(&cpt_data.cpt_mutex);
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
register_hotcpu_notifier(&cfs_cpu_notifier);
|
||||
ret = cpuhp_setup_state_nocalls(CPUHP_LUSTRE_CFS_DEAD,
|
||||
"staging/lustre/cfe:dead", NULL,
|
||||
cfs_cpu_dead);
|
||||
if (ret < 0)
|
||||
goto failed;
|
||||
ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
|
||||
"staging/lustre/cfe:online",
|
||||
cfs_cpu_online, NULL);
|
||||
if (ret < 0)
|
||||
goto failed;
|
||||
lustre_cpu_online = ret;
|
||||
#endif
|
||||
ret = -EINVAL;
|
||||
|
||||
if (*cpu_pattern) {
|
||||
cfs_cpt_table = cfs_cpt_table_create_pattern(cpu_pattern);
|
||||
|
@ -1075,7 +1080,7 @@ cfs_cpu_init(void)
|
|||
|
||||
failed:
|
||||
cfs_cpu_fini();
|
||||
return -1;
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
@ -445,7 +445,7 @@ int __init xen_evtchn_fifo_init(void)
|
|||
evtchn_ops = &evtchn_ops_fifo;
|
||||
|
||||
cpuhp_setup_state_nocalls(CPUHP_XEN_EVTCHN_PREPARE,
|
||||
"CPUHP_XEN_EVTCHN_PREPARE",
|
||||
"xen/evtchn:prepare",
|
||||
xen_evtchn_cpu_prepare, xen_evtchn_cpu_dead);
|
||||
out:
|
||||
put_cpu();
|
||||
|
|
|
@ -57,9 +57,6 @@ struct notifier_block;
|
|||
|
||||
#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
|
||||
#define CPU_UP_PREPARE 0x0003 /* CPU (unsigned)v coming up */
|
||||
#define CPU_UP_CANCELED 0x0004 /* CPU (unsigned)v NOT coming up */
|
||||
#define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */
|
||||
#define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */
|
||||
#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */
|
||||
#define CPU_POST_DEAD 0x0009 /* CPU (unsigned)v dead, cpu_hotplug
|
||||
* lock is dropped */
|
||||
|
@ -80,80 +77,14 @@ struct notifier_block;
|
|||
|
||||
#ifdef CONFIG_SMP
|
||||
extern bool cpuhp_tasks_frozen;
|
||||
/* Need to know about CPUs going up/down? */
|
||||
#if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)
|
||||
#define cpu_notifier(fn, pri) { \
|
||||
static struct notifier_block fn##_nb = \
|
||||
{ .notifier_call = fn, .priority = pri }; \
|
||||
register_cpu_notifier(&fn##_nb); \
|
||||
}
|
||||
|
||||
#define __cpu_notifier(fn, pri) { \
|
||||
static struct notifier_block fn##_nb = \
|
||||
{ .notifier_call = fn, .priority = pri }; \
|
||||
__register_cpu_notifier(&fn##_nb); \
|
||||
}
|
||||
|
||||
extern int register_cpu_notifier(struct notifier_block *nb);
|
||||
extern int __register_cpu_notifier(struct notifier_block *nb);
|
||||
extern void unregister_cpu_notifier(struct notifier_block *nb);
|
||||
extern void __unregister_cpu_notifier(struct notifier_block *nb);
|
||||
|
||||
#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
|
||||
#define cpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
#define __cpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
|
||||
static inline int register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int __register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void __unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
int cpu_up(unsigned int cpu);
|
||||
void notify_cpu_starting(unsigned int cpu);
|
||||
extern void cpu_maps_update_begin(void);
|
||||
extern void cpu_maps_update_done(void);
|
||||
|
||||
#define cpu_notifier_register_begin cpu_maps_update_begin
|
||||
#define cpu_notifier_register_done cpu_maps_update_done
|
||||
|
||||
#else /* CONFIG_SMP */
|
||||
#define cpuhp_tasks_frozen 0
|
||||
|
||||
#define cpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
#define __cpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
|
||||
static inline int register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int __register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void __unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void cpu_maps_update_begin(void)
|
||||
{
|
||||
}
|
||||
|
@ -162,14 +93,6 @@ static inline void cpu_maps_update_done(void)
|
|||
{
|
||||
}
|
||||
|
||||
static inline void cpu_notifier_register_begin(void)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void cpu_notifier_register_done(void)
|
||||
{
|
||||
}
|
||||
|
||||
#endif /* CONFIG_SMP */
|
||||
extern struct bus_type cpu_subsys;
|
||||
|
||||
|
@ -182,12 +105,6 @@ extern void get_online_cpus(void);
|
|||
extern void put_online_cpus(void);
|
||||
extern void cpu_hotplug_disable(void);
|
||||
extern void cpu_hotplug_enable(void);
|
||||
#define hotcpu_notifier(fn, pri) cpu_notifier(fn, pri)
|
||||
#define __hotcpu_notifier(fn, pri) __cpu_notifier(fn, pri)
|
||||
#define register_hotcpu_notifier(nb) register_cpu_notifier(nb)
|
||||
#define __register_hotcpu_notifier(nb) __register_cpu_notifier(nb)
|
||||
#define unregister_hotcpu_notifier(nb) unregister_cpu_notifier(nb)
|
||||
#define __unregister_hotcpu_notifier(nb) __unregister_cpu_notifier(nb)
|
||||
void clear_tasks_mm_cpumask(int cpu);
|
||||
int cpu_down(unsigned int cpu);
|
||||
|
||||
|
@ -199,13 +116,6 @@ static inline void cpu_hotplug_done(void) {}
|
|||
#define put_online_cpus() do { } while (0)
|
||||
#define cpu_hotplug_disable() do { } while (0)
|
||||
#define cpu_hotplug_enable() do { } while (0)
|
||||
#define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
#define __hotcpu_notifier(fn, pri) do { (void)(fn); } while (0)
|
||||
/* These aren't inline functions due to a GCC bug. */
|
||||
#define register_hotcpu_notifier(nb) ({ (void)(nb); 0; })
|
||||
#define __register_hotcpu_notifier(nb) ({ (void)(nb); 0; })
|
||||
#define unregister_hotcpu_notifier(nb) ({ (void)(nb); })
|
||||
#define __unregister_hotcpu_notifier(nb) ({ (void)(nb); })
|
||||
#endif /* CONFIG_HOTPLUG_CPU */
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP_SMP
|
||||
|
|
|
@ -41,6 +41,9 @@ enum cpuhp_state {
|
|||
CPUHP_NET_DEV_DEAD,
|
||||
CPUHP_PCI_XGENE_DEAD,
|
||||
CPUHP_IOMMU_INTEL_DEAD,
|
||||
CPUHP_LUSTRE_CFS_DEAD,
|
||||
CPUHP_SCSI_BNX2FC_DEAD,
|
||||
CPUHP_SCSI_BNX2I_DEAD,
|
||||
CPUHP_WORKQUEUE_PREP,
|
||||
CPUHP_POWER_NUMA_PREPARE,
|
||||
CPUHP_HRTIMERS_PREPARE,
|
||||
|
@ -56,7 +59,6 @@ enum cpuhp_state {
|
|||
CPUHP_POWERPC_MMU_CTX_PREPARE,
|
||||
CPUHP_XEN_PREPARE,
|
||||
CPUHP_XEN_EVTCHN_PREPARE,
|
||||
CPUHP_NOTIFY_PREPARE,
|
||||
CPUHP_ARM_SHMOBILE_SCU_PREPARE,
|
||||
CPUHP_SH_SH3X_PREPARE,
|
||||
CPUHP_BLK_MQ_PREPARE,
|
||||
|
@ -71,7 +73,6 @@ enum cpuhp_state {
|
|||
CPUHP_KVM_PPC_BOOK3S_PREPARE,
|
||||
CPUHP_ZCOMP_PREPARE,
|
||||
CPUHP_TIMERS_DEAD,
|
||||
CPUHP_NOTF_ERR_INJ_PREPARE,
|
||||
CPUHP_MIPS_SOC_PREPARE,
|
||||
CPUHP_BRINGUP_CPU,
|
||||
CPUHP_AP_IDLE_DEAD,
|
||||
|
@ -79,10 +80,8 @@ enum cpuhp_state {
|
|||
CPUHP_AP_SCHED_STARTING,
|
||||
CPUHP_AP_RCUTREE_DYING,
|
||||
CPUHP_AP_IRQ_GIC_STARTING,
|
||||
CPUHP_AP_IRQ_GICV3_STARTING,
|
||||
CPUHP_AP_IRQ_HIP04_STARTING,
|
||||
CPUHP_AP_IRQ_ARMADA_XP_STARTING,
|
||||
CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
|
||||
CPUHP_AP_IRQ_BCM2836_STARTING,
|
||||
CPUHP_AP_ARM_MVEBU_COHERENCY,
|
||||
CPUHP_AP_PERF_X86_UNCORE_STARTING,
|
||||
|
@ -118,7 +117,6 @@ enum cpuhp_state {
|
|||
CPUHP_AP_DUMMY_TIMER_STARTING,
|
||||
CPUHP_AP_ARM_XEN_STARTING,
|
||||
CPUHP_AP_ARM_CORESIGHT_STARTING,
|
||||
CPUHP_AP_ARM_CORESIGHT4_STARTING,
|
||||
CPUHP_AP_ARM64_ISNDEP_STARTING,
|
||||
CPUHP_AP_SMPCFD_DYING,
|
||||
CPUHP_AP_X86_TBOOT_DYING,
|
||||
|
@ -142,7 +140,6 @@ enum cpuhp_state {
|
|||
CPUHP_AP_PERF_ARM_L2X0_ONLINE,
|
||||
CPUHP_AP_WORKQUEUE_ONLINE,
|
||||
CPUHP_AP_RCUTREE_ONLINE,
|
||||
CPUHP_AP_NOTIFY_ONLINE,
|
||||
CPUHP_AP_ONLINE_DYN,
|
||||
CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30,
|
||||
CPUHP_AP_X86_HPET_ONLINE,
|
||||
|
|
219
kernel/cpu.c
219
kernel/cpu.c
|
@ -183,23 +183,16 @@ EXPORT_SYMBOL_GPL(cpuhp_tasks_frozen);
|
|||
/*
|
||||
* The following two APIs (cpu_maps_update_begin/done) must be used when
|
||||
* attempting to serialize the updates to cpu_online_mask & cpu_present_mask.
|
||||
* The APIs cpu_notifier_register_begin/done() must be used to protect CPU
|
||||
* hotplug callback (un)registration performed using __register_cpu_notifier()
|
||||
* or __unregister_cpu_notifier().
|
||||
*/
|
||||
void cpu_maps_update_begin(void)
|
||||
{
|
||||
mutex_lock(&cpu_add_remove_lock);
|
||||
}
|
||||
EXPORT_SYMBOL(cpu_notifier_register_begin);
|
||||
|
||||
void cpu_maps_update_done(void)
|
||||
{
|
||||
mutex_unlock(&cpu_add_remove_lock);
|
||||
}
|
||||
EXPORT_SYMBOL(cpu_notifier_register_done);
|
||||
|
||||
static RAW_NOTIFIER_HEAD(cpu_chain);
|
||||
|
||||
/* If set, cpu_up and cpu_down will return -EBUSY and do nothing.
|
||||
* Should always be manipulated under cpu_add_remove_lock
|
||||
|
@ -349,66 +342,7 @@ void cpu_hotplug_enable(void)
|
|||
EXPORT_SYMBOL_GPL(cpu_hotplug_enable);
|
||||
#endif /* CONFIG_HOTPLUG_CPU */
|
||||
|
||||
/* Need to know about CPUs going up/down? */
|
||||
int register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
int ret;
|
||||
cpu_maps_update_begin();
|
||||
ret = raw_notifier_chain_register(&cpu_chain, nb);
|
||||
cpu_maps_update_done();
|
||||
return ret;
|
||||
}
|
||||
|
||||
int __register_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
return raw_notifier_chain_register(&cpu_chain, nb);
|
||||
}
|
||||
|
||||
static int __cpu_notify(unsigned long val, unsigned int cpu, int nr_to_call,
|
||||
int *nr_calls)
|
||||
{
|
||||
unsigned long mod = cpuhp_tasks_frozen ? CPU_TASKS_FROZEN : 0;
|
||||
void *hcpu = (void *)(long)cpu;
|
||||
|
||||
int ret;
|
||||
|
||||
ret = __raw_notifier_call_chain(&cpu_chain, val | mod, hcpu, nr_to_call,
|
||||
nr_calls);
|
||||
|
||||
return notifier_to_errno(ret);
|
||||
}
|
||||
|
||||
static int cpu_notify(unsigned long val, unsigned int cpu)
|
||||
{
|
||||
return __cpu_notify(val, cpu, -1, NULL);
|
||||
}
|
||||
|
||||
static void cpu_notify_nofail(unsigned long val, unsigned int cpu)
|
||||
{
|
||||
BUG_ON(cpu_notify(val, cpu));
|
||||
}
|
||||
|
||||
/* Notifier wrappers for transitioning to state machine */
|
||||
static int notify_prepare(unsigned int cpu)
|
||||
{
|
||||
int nr_calls = 0;
|
||||
int ret;
|
||||
|
||||
ret = __cpu_notify(CPU_UP_PREPARE, cpu, -1, &nr_calls);
|
||||
if (ret) {
|
||||
nr_calls--;
|
||||
printk(KERN_WARNING "%s: attempt to bring up CPU %u failed\n",
|
||||
__func__, cpu);
|
||||
__cpu_notify(CPU_UP_CANCELED, cpu, nr_calls, NULL);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int notify_online(unsigned int cpu)
|
||||
{
|
||||
cpu_notify(CPU_ONLINE, cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bringup_wait_for_ap(unsigned int cpu)
|
||||
{
|
||||
|
@ -433,10 +367,8 @@ static int bringup_cpu(unsigned int cpu)
|
|||
/* Arch-specific enabling code. */
|
||||
ret = __cpu_up(cpu, idle);
|
||||
irq_unlock_sparse();
|
||||
if (ret) {
|
||||
cpu_notify(CPU_UP_CANCELED, cpu);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
ret = bringup_wait_for_ap(cpu);
|
||||
BUG_ON(!cpu_online(cpu));
|
||||
return ret;
|
||||
|
@ -565,11 +497,6 @@ static void cpuhp_thread_fun(unsigned int cpu)
|
|||
BUG_ON(st->state < CPUHP_AP_ONLINE_IDLE);
|
||||
|
||||
undo_cpu_down(cpu, st);
|
||||
/*
|
||||
* This is a momentary workaround to keep the notifier users
|
||||
* happy. Will go away once we got rid of the notifiers.
|
||||
*/
|
||||
cpu_notify_nofail(CPU_DOWN_FAILED, cpu);
|
||||
st->rollback = false;
|
||||
} else {
|
||||
/* Cannot happen .... */
|
||||
|
@ -659,22 +586,6 @@ void __init cpuhp_threads_init(void)
|
|||
kthread_unpark(this_cpu_read(cpuhp_state.thread));
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(register_cpu_notifier);
|
||||
EXPORT_SYMBOL(__register_cpu_notifier);
|
||||
void unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
cpu_maps_update_begin();
|
||||
raw_notifier_chain_unregister(&cpu_chain, nb);
|
||||
cpu_maps_update_done();
|
||||
}
|
||||
EXPORT_SYMBOL(unregister_cpu_notifier);
|
||||
|
||||
void __unregister_cpu_notifier(struct notifier_block *nb)
|
||||
{
|
||||
raw_notifier_chain_unregister(&cpu_chain, nb);
|
||||
}
|
||||
EXPORT_SYMBOL(__unregister_cpu_notifier);
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
/**
|
||||
* clear_tasks_mm_cpumask - Safely clear tasks' mm_cpumask for a CPU
|
||||
|
@ -741,20 +652,6 @@ static inline void check_for_tasks(int dead_cpu)
|
|||
read_unlock(&tasklist_lock);
|
||||
}
|
||||
|
||||
static int notify_down_prepare(unsigned int cpu)
|
||||
{
|
||||
int err, nr_calls = 0;
|
||||
|
||||
err = __cpu_notify(CPU_DOWN_PREPARE, cpu, -1, &nr_calls);
|
||||
if (err) {
|
||||
nr_calls--;
|
||||
__cpu_notify(CPU_DOWN_FAILED, cpu, nr_calls, NULL);
|
||||
pr_warn("%s: attempt to take down CPU %u failed\n",
|
||||
__func__, cpu);
|
||||
}
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Take this CPU down. */
|
||||
static int take_cpu_down(void *_param)
|
||||
{
|
||||
|
@ -833,13 +730,6 @@ static int takedown_cpu(unsigned int cpu)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int notify_dead(unsigned int cpu)
|
||||
{
|
||||
cpu_notify_nofail(CPU_DEAD, cpu);
|
||||
check_for_tasks(cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void cpuhp_complete_idle_dead(void *arg)
|
||||
{
|
||||
struct cpuhp_cpu_state *st = arg;
|
||||
|
@ -863,9 +753,7 @@ void cpuhp_report_idle_dead(void)
|
|||
}
|
||||
|
||||
#else
|
||||
#define notify_down_prepare NULL
|
||||
#define takedown_cpu NULL
|
||||
#define notify_dead NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
|
@ -924,9 +812,6 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen,
|
|||
hasdied = prev_state != st->state && st->state == CPUHP_OFFLINE;
|
||||
out:
|
||||
cpu_hotplug_done();
|
||||
/* This post dead nonsense must die */
|
||||
if (!ret && hasdied)
|
||||
cpu_notify_nofail(CPU_POST_DEAD, cpu);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1291,17 +1176,6 @@ static struct cpuhp_step cpuhp_bp_states[] = {
|
|||
.startup.single = rcutree_prepare_cpu,
|
||||
.teardown.single = rcutree_dead_cpu,
|
||||
},
|
||||
/*
|
||||
* Preparatory and dead notifiers. Will be replaced once the notifiers
|
||||
* are converted to states.
|
||||
*/
|
||||
[CPUHP_NOTIFY_PREPARE] = {
|
||||
.name = "notify:prepare",
|
||||
.startup.single = notify_prepare,
|
||||
.teardown.single = notify_dead,
|
||||
.skip_onerr = true,
|
||||
.cant_stop = true,
|
||||
},
|
||||
/*
|
||||
* On the tear-down path, timers_dead_cpu() must be invoked
|
||||
* before blk_mq_queue_reinit_notify() from notify_dead(),
|
||||
|
@ -1391,17 +1265,6 @@ static struct cpuhp_step cpuhp_ap_states[] = {
|
|||
.startup.single = rcutree_online_cpu,
|
||||
.teardown.single = rcutree_offline_cpu,
|
||||
},
|
||||
|
||||
/*
|
||||
* Online/down_prepare notifiers. Will be removed once the notifiers
|
||||
* are converted to states.
|
||||
*/
|
||||
[CPUHP_AP_NOTIFY_ONLINE] = {
|
||||
.name = "notify:online",
|
||||
.startup.single = notify_online,
|
||||
.teardown.single = notify_down_prepare,
|
||||
.skip_onerr = true,
|
||||
},
|
||||
#endif
|
||||
/*
|
||||
* The dynamically registered state space is here
|
||||
|
@ -1432,23 +1295,53 @@ static int cpuhp_cb_check(enum cpuhp_state state)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void cpuhp_store_callbacks(enum cpuhp_state state,
|
||||
const char *name,
|
||||
/*
|
||||
* Returns a free for dynamic slot assignment of the Online state. The states
|
||||
* are protected by the cpuhp_slot_states mutex and an empty slot is identified
|
||||
* by having no name assigned.
|
||||
*/
|
||||
static int cpuhp_reserve_state(enum cpuhp_state state)
|
||||
{
|
||||
enum cpuhp_state i;
|
||||
|
||||
for (i = CPUHP_AP_ONLINE_DYN; i <= CPUHP_AP_ONLINE_DYN_END; i++) {
|
||||
if (!cpuhp_ap_states[i].name)
|
||||
return i;
|
||||
}
|
||||
WARN(1, "No more dynamic states available for CPU hotplug\n");
|
||||
return -ENOSPC;
|
||||
}
|
||||
|
||||
static int cpuhp_store_callbacks(enum cpuhp_state state, const char *name,
|
||||
int (*startup)(unsigned int cpu),
|
||||
int (*teardown)(unsigned int cpu),
|
||||
bool multi_instance)
|
||||
{
|
||||
/* (Un)Install the callbacks for further cpu hotplug operations */
|
||||
struct cpuhp_step *sp;
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&cpuhp_state_mutex);
|
||||
|
||||
if (state == CPUHP_AP_ONLINE_DYN) {
|
||||
ret = cpuhp_reserve_state(state);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
state = ret;
|
||||
}
|
||||
sp = cpuhp_get_step(state);
|
||||
if (name && sp->name) {
|
||||
ret = -EBUSY;
|
||||
goto out;
|
||||
}
|
||||
sp->startup.single = startup;
|
||||
sp->teardown.single = teardown;
|
||||
sp->name = name;
|
||||
sp->multi_instance = multi_instance;
|
||||
INIT_HLIST_HEAD(&sp->list);
|
||||
out:
|
||||
mutex_unlock(&cpuhp_state_mutex);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void *cpuhp_get_teardown_cb(enum cpuhp_state state)
|
||||
|
@ -1509,29 +1402,6 @@ static void cpuhp_rollback_install(int failedcpu, enum cpuhp_state state,
|
|||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Returns a free for dynamic slot assignment of the Online state. The states
|
||||
* are protected by the cpuhp_slot_states mutex and an empty slot is identified
|
||||
* by having no name assigned.
|
||||
*/
|
||||
static int cpuhp_reserve_state(enum cpuhp_state state)
|
||||
{
|
||||
enum cpuhp_state i;
|
||||
|
||||
mutex_lock(&cpuhp_state_mutex);
|
||||
for (i = CPUHP_AP_ONLINE_DYN; i <= CPUHP_AP_ONLINE_DYN_END; i++) {
|
||||
if (cpuhp_ap_states[i].name)
|
||||
continue;
|
||||
|
||||
cpuhp_ap_states[i].name = "Reserved";
|
||||
mutex_unlock(&cpuhp_state_mutex);
|
||||
return i;
|
||||
}
|
||||
mutex_unlock(&cpuhp_state_mutex);
|
||||
WARN(1, "No more dynamic states available for CPU hotplug\n");
|
||||
return -ENOSPC;
|
||||
}
|
||||
|
||||
int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
|
||||
bool invoke)
|
||||
{
|
||||
|
@ -1585,6 +1455,8 @@ EXPORT_SYMBOL_GPL(__cpuhp_state_add_instance);
|
|||
* cpu state >= @state
|
||||
* @startup: startup callback function
|
||||
* @teardown: teardown callback function
|
||||
* @multi_instance: State is set up for multiple instances which get
|
||||
* added afterwards.
|
||||
*
|
||||
* Returns:
|
||||
* On success:
|
||||
|
@ -1599,25 +1471,16 @@ int __cpuhp_setup_state(enum cpuhp_state state,
|
|||
bool multi_instance)
|
||||
{
|
||||
int cpu, ret = 0;
|
||||
int dyn_state = 0;
|
||||
|
||||
if (cpuhp_cb_check(state) || !name)
|
||||
return -EINVAL;
|
||||
|
||||
get_online_cpus();
|
||||
|
||||
/* currently assignments for the ONLINE state are possible */
|
||||
if (state == CPUHP_AP_ONLINE_DYN) {
|
||||
dyn_state = 1;
|
||||
ret = cpuhp_reserve_state(state);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
state = ret;
|
||||
}
|
||||
ret = cpuhp_store_callbacks(state, name, startup, teardown,
|
||||
multi_instance);
|
||||
|
||||
cpuhp_store_callbacks(state, name, startup, teardown, multi_instance);
|
||||
|
||||
if (!invoke || !startup)
|
||||
if (ret || !invoke || !startup)
|
||||
goto out;
|
||||
|
||||
/*
|
||||
|
@ -1641,7 +1504,11 @@ int __cpuhp_setup_state(enum cpuhp_state state,
|
|||
}
|
||||
out:
|
||||
put_online_cpus();
|
||||
if (!ret && dyn_state)
|
||||
/*
|
||||
* If the requested state is CPUHP_AP_ONLINE_DYN, return the
|
||||
* dynamically allocated state in case of success.
|
||||
*/
|
||||
if (!ret && state == CPUHP_AP_ONLINE_DYN)
|
||||
return state;
|
||||
return ret;
|
||||
}
|
||||
|
|
|
@ -1538,30 +1538,6 @@ config NOTIFIER_ERROR_INJECTION
|
|||
|
||||
Say N if unsure.
|
||||
|
||||
config CPU_NOTIFIER_ERROR_INJECT
|
||||
tristate "CPU notifier error injection module"
|
||||
depends on HOTPLUG_CPU && NOTIFIER_ERROR_INJECTION
|
||||
help
|
||||
This option provides a kernel module that can be used to test
|
||||
the error handling of the cpu notifiers by injecting artificial
|
||||
errors to CPU notifier chain callbacks. It is controlled through
|
||||
debugfs interface under /sys/kernel/debug/notifier-error-inject/cpu
|
||||
|
||||
If the notifier call chain should be failed with some events
|
||||
notified, write the error code to "actions/<notifier event>/error".
|
||||
|
||||
Example: Inject CPU offline error (-1 == -EPERM)
|
||||
|
||||
# cd /sys/kernel/debug/notifier-error-inject/cpu
|
||||
# echo -1 > actions/CPU_DOWN_PREPARE/error
|
||||
# echo 0 > /sys/devices/system/cpu/cpu1/online
|
||||
bash: echo: write error: Operation not permitted
|
||||
|
||||
To compile this code as a module, choose M here: the module will
|
||||
be called cpu-notifier-error-inject.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
config PM_NOTIFIER_ERROR_INJECT
|
||||
tristate "PM notifier error injection module"
|
||||
depends on PM && NOTIFIER_ERROR_INJECTION
|
||||
|
|
|
@ -128,7 +128,6 @@ obj-$(CONFIG_SWIOTLB) += swiotlb.o
|
|||
obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o iommu-common.o
|
||||
obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
|
||||
obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
|
||||
obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o
|
||||
obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
|
||||
obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
|
||||
obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
|
||||
|
|
|
@ -1,84 +0,0 @@
|
|||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/cpu.h>
|
||||
|
||||
#include "notifier-error-inject.h"
|
||||
|
||||
static int priority;
|
||||
module_param(priority, int, 0);
|
||||
MODULE_PARM_DESC(priority, "specify cpu notifier priority");
|
||||
|
||||
#define UP_PREPARE 0
|
||||
#define UP_PREPARE_FROZEN 0
|
||||
#define DOWN_PREPARE 0
|
||||
#define DOWN_PREPARE_FROZEN 0
|
||||
|
||||
static struct notifier_err_inject cpu_notifier_err_inject = {
|
||||
.actions = {
|
||||
{ NOTIFIER_ERR_INJECT_ACTION(UP_PREPARE) },
|
||||
{ NOTIFIER_ERR_INJECT_ACTION(UP_PREPARE_FROZEN) },
|
||||
{ NOTIFIER_ERR_INJECT_ACTION(DOWN_PREPARE) },
|
||||
{ NOTIFIER_ERR_INJECT_ACTION(DOWN_PREPARE_FROZEN) },
|
||||
{}
|
||||
}
|
||||
};
|
||||
|
||||
static int notf_err_handle(struct notifier_err_inject_action *action)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = action->error;
|
||||
if (ret)
|
||||
pr_info("Injecting error (%d) to %s\n", ret, action->name);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int notf_err_inj_up_prepare(unsigned int cpu)
|
||||
{
|
||||
if (!cpuhp_tasks_frozen)
|
||||
return notf_err_handle(&cpu_notifier_err_inject.actions[0]);
|
||||
else
|
||||
return notf_err_handle(&cpu_notifier_err_inject.actions[1]);
|
||||
}
|
||||
|
||||
static int notf_err_inj_dead(unsigned int cpu)
|
||||
{
|
||||
if (!cpuhp_tasks_frozen)
|
||||
return notf_err_handle(&cpu_notifier_err_inject.actions[2]);
|
||||
else
|
||||
return notf_err_handle(&cpu_notifier_err_inject.actions[3]);
|
||||
}
|
||||
|
||||
static struct dentry *dir;
|
||||
|
||||
static int err_inject_init(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
dir = notifier_err_inject_init("cpu", notifier_err_inject_dir,
|
||||
&cpu_notifier_err_inject, priority);
|
||||
if (IS_ERR(dir))
|
||||
return PTR_ERR(dir);
|
||||
|
||||
err = cpuhp_setup_state_nocalls(CPUHP_NOTF_ERR_INJ_PREPARE,
|
||||
"cpu-err-notif:prepare",
|
||||
notf_err_inj_up_prepare,
|
||||
notf_err_inj_dead);
|
||||
if (err)
|
||||
debugfs_remove_recursive(dir);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static void err_inject_exit(void)
|
||||
{
|
||||
cpuhp_remove_state_nocalls(CPUHP_NOTF_ERR_INJ_PREPARE);
|
||||
debugfs_remove_recursive(dir);
|
||||
}
|
||||
|
||||
module_init(err_inject_init);
|
||||
module_exit(err_inject_exit);
|
||||
|
||||
MODULE_DESCRIPTION("CPU notifier error injection module");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
|
|
@ -456,7 +456,7 @@ int kvm_timer_hyp_init(void)
|
|||
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
|
||||
|
||||
cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING,
|
||||
"AP_KVM_ARM_TIMER_STARTING", kvm_timer_starting_cpu,
|
||||
"kvm/arm/timer:starting", kvm_timer_starting_cpu,
|
||||
kvm_timer_dying_cpu);
|
||||
return err;
|
||||
}
|
||||
|
|
|
@ -428,7 +428,7 @@ int kvm_vgic_hyp_init(void)
|
|||
}
|
||||
|
||||
ret = cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
|
||||
"AP_KVM_ARM_VGIC_INIT_STARTING",
|
||||
"kvm/arm/vgic:starting",
|
||||
vgic_init_cpu_starting, vgic_init_cpu_dying);
|
||||
if (ret) {
|
||||
kvm_err("Cannot register vgic CPU notifier\n");
|
||||
|
|
|
@ -3944,7 +3944,7 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
|
|||
goto out_free_1;
|
||||
}
|
||||
|
||||
r = cpuhp_setup_state_nocalls(CPUHP_AP_KVM_STARTING, "AP_KVM_STARTING",
|
||||
r = cpuhp_setup_state_nocalls(CPUHP_AP_KVM_STARTING, "kvm/cpu:starting",
|
||||
kvm_starting_cpu, kvm_dying_cpu);
|
||||
if (r)
|
||||
goto out_free_2;
|
||||
|
|
Loading…
Reference in New Issue