root/arch/x86/kernel/trace.c
#include <asm/trace/irq_vectors.h>
#include <linux/trace.h>

#if defined(CONFIG_OSNOISE_TRACER) && defined(CONFIG_X86_LOCAL_APIC)
/*
 * trace_intel_irq_entry - record intel specific IRQ entry
 */
static void trace_intel_irq_entry(void *data, int vector)
{
        osnoise_trace_irq_entry(vector);
}

/*
 * trace_intel_irq_exit - record intel specific IRQ exit
 */
static void trace_intel_irq_exit(void *data, int vector)
{
        char *vector_desc = (char *) data;

        osnoise_trace_irq_exit(vector, vector_desc);
}

/*
 * register_intel_irq_tp - Register intel specific IRQ entry tracepoints
 */
int osnoise_arch_register(void)
{
        int ret;

        ret = register_trace_local_timer_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_err;

        ret = register_trace_local_timer_exit(trace_intel_irq_exit, "local_timer");
        if (ret)
                goto out_timer_entry;

#ifdef CONFIG_X86_THERMAL_VECTOR
        ret = register_trace_thermal_apic_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_timer_exit;

        ret = register_trace_thermal_apic_exit(trace_intel_irq_exit, "thermal_apic");
        if (ret)
                goto out_thermal_entry;
#endif /* CONFIG_X86_THERMAL_VECTOR */

#ifdef CONFIG_X86_MCE_AMD
        ret = register_trace_deferred_error_apic_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_thermal_exit;

        ret = register_trace_deferred_error_apic_exit(trace_intel_irq_exit, "deferred_error");
        if (ret)
                goto out_deferred_entry;
#endif

#ifdef CONFIG_X86_MCE_THRESHOLD
        ret = register_trace_threshold_apic_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_deferred_exit;

        ret = register_trace_threshold_apic_exit(trace_intel_irq_exit, "threshold_apic");
        if (ret)
                goto out_threshold_entry;
#endif /* CONFIG_X86_MCE_THRESHOLD */

#ifdef CONFIG_SMP
        ret = register_trace_call_function_single_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_threshold_exit;

        ret = register_trace_call_function_single_exit(trace_intel_irq_exit,
                                                       "call_function_single");
        if (ret)
                goto out_call_function_single_entry;

        ret = register_trace_call_function_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_call_function_single_exit;

        ret = register_trace_call_function_exit(trace_intel_irq_exit, "call_function");
        if (ret)
                goto out_call_function_entry;

        ret = register_trace_reschedule_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_call_function_exit;

        ret = register_trace_reschedule_exit(trace_intel_irq_exit, "reschedule");
        if (ret)
                goto out_reschedule_entry;
#endif /* CONFIG_SMP */

#ifdef CONFIG_IRQ_WORK
        ret = register_trace_irq_work_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_reschedule_exit;

        ret = register_trace_irq_work_exit(trace_intel_irq_exit, "irq_work");
        if (ret)
                goto out_irq_work_entry;
#endif

        ret = register_trace_x86_platform_ipi_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_irq_work_exit;

        ret = register_trace_x86_platform_ipi_exit(trace_intel_irq_exit, "x86_platform_ipi");
        if (ret)
                goto out_x86_ipi_entry;

        ret = register_trace_error_apic_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_x86_ipi_exit;

        ret = register_trace_error_apic_exit(trace_intel_irq_exit, "error_apic");
        if (ret)
                goto out_error_apic_entry;

        ret = register_trace_spurious_apic_entry(trace_intel_irq_entry, NULL);
        if (ret)
                goto out_error_apic_exit;

        ret = register_trace_spurious_apic_exit(trace_intel_irq_exit, "spurious_apic");
        if (ret)
                goto out_spurious_apic_entry;

        return 0;

out_spurious_apic_entry:
        unregister_trace_spurious_apic_entry(trace_intel_irq_entry, NULL);
out_error_apic_exit:
        unregister_trace_error_apic_exit(trace_intel_irq_exit, "error_apic");
out_error_apic_entry:
        unregister_trace_error_apic_entry(trace_intel_irq_entry, NULL);
out_x86_ipi_exit:
        unregister_trace_x86_platform_ipi_exit(trace_intel_irq_exit, "x86_platform_ipi");
out_x86_ipi_entry:
        unregister_trace_x86_platform_ipi_entry(trace_intel_irq_entry, NULL);
out_irq_work_exit:

#ifdef CONFIG_IRQ_WORK
        unregister_trace_irq_work_exit(trace_intel_irq_exit, "irq_work");
out_irq_work_entry:
        unregister_trace_irq_work_entry(trace_intel_irq_entry, NULL);
out_reschedule_exit:
#endif

#ifdef CONFIG_SMP
        unregister_trace_reschedule_exit(trace_intel_irq_exit, "reschedule");
out_reschedule_entry:
        unregister_trace_reschedule_entry(trace_intel_irq_entry, NULL);
out_call_function_exit:
        unregister_trace_call_function_exit(trace_intel_irq_exit, "call_function");
out_call_function_entry:
        unregister_trace_call_function_entry(trace_intel_irq_entry, NULL);
out_call_function_single_exit:
        unregister_trace_call_function_single_exit(trace_intel_irq_exit, "call_function_single");
out_call_function_single_entry:
        unregister_trace_call_function_single_entry(trace_intel_irq_entry, NULL);
out_threshold_exit:
#endif

#ifdef CONFIG_X86_MCE_THRESHOLD
        unregister_trace_threshold_apic_exit(trace_intel_irq_exit, "threshold_apic");
out_threshold_entry:
        unregister_trace_threshold_apic_entry(trace_intel_irq_entry, NULL);
out_deferred_exit:
#endif

#ifdef CONFIG_X86_MCE_AMD
        unregister_trace_deferred_error_apic_exit(trace_intel_irq_exit, "deferred_error");
out_deferred_entry:
        unregister_trace_deferred_error_apic_entry(trace_intel_irq_entry, NULL);
out_thermal_exit:
#endif /* CONFIG_X86_MCE_AMD */

#ifdef CONFIG_X86_THERMAL_VECTOR
        unregister_trace_thermal_apic_exit(trace_intel_irq_exit, "thermal_apic");
out_thermal_entry:
        unregister_trace_thermal_apic_entry(trace_intel_irq_entry, NULL);
out_timer_exit:
#endif /* CONFIG_X86_THERMAL_VECTOR */

        unregister_trace_local_timer_exit(trace_intel_irq_exit, "local_timer");
out_timer_entry:
        unregister_trace_local_timer_entry(trace_intel_irq_entry, NULL);
out_err:
        return -EINVAL;
}

void osnoise_arch_unregister(void)
{
        unregister_trace_spurious_apic_exit(trace_intel_irq_exit, "spurious_apic");
        unregister_trace_spurious_apic_entry(trace_intel_irq_entry, NULL);
        unregister_trace_error_apic_exit(trace_intel_irq_exit, "error_apic");
        unregister_trace_error_apic_entry(trace_intel_irq_entry, NULL);
        unregister_trace_x86_platform_ipi_exit(trace_intel_irq_exit, "x86_platform_ipi");
        unregister_trace_x86_platform_ipi_entry(trace_intel_irq_entry, NULL);

#ifdef CONFIG_IRQ_WORK
        unregister_trace_irq_work_exit(trace_intel_irq_exit, "irq_work");
        unregister_trace_irq_work_entry(trace_intel_irq_entry, NULL);
#endif

#ifdef CONFIG_SMP
        unregister_trace_reschedule_exit(trace_intel_irq_exit, "reschedule");
        unregister_trace_reschedule_entry(trace_intel_irq_entry, NULL);
        unregister_trace_call_function_exit(trace_intel_irq_exit, "call_function");
        unregister_trace_call_function_entry(trace_intel_irq_entry, NULL);
        unregister_trace_call_function_single_exit(trace_intel_irq_exit, "call_function_single");
        unregister_trace_call_function_single_entry(trace_intel_irq_entry, NULL);
#endif

#ifdef CONFIG_X86_MCE_THRESHOLD
        unregister_trace_threshold_apic_exit(trace_intel_irq_exit, "threshold_apic");
        unregister_trace_threshold_apic_entry(trace_intel_irq_entry, NULL);
#endif

#ifdef CONFIG_X86_MCE_AMD
        unregister_trace_deferred_error_apic_exit(trace_intel_irq_exit, "deferred_error");
        unregister_trace_deferred_error_apic_entry(trace_intel_irq_entry, NULL);
#endif

#ifdef CONFIG_X86_THERMAL_VECTOR
        unregister_trace_thermal_apic_exit(trace_intel_irq_exit, "thermal_apic");
        unregister_trace_thermal_apic_entry(trace_intel_irq_entry, NULL);
#endif /* CONFIG_X86_THERMAL_VECTOR */

        unregister_trace_local_timer_exit(trace_intel_irq_exit, "local_timer");
        unregister_trace_local_timer_entry(trace_intel_irq_entry, NULL);
}
#endif /* CONFIG_OSNOISE_TRACER && CONFIG_X86_LOCAL_APIC */