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https://github.com/RGBCube/serenity
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fb00d3ed25
Each GenericInterruptHandler now tracks the number of calls that each CPU has serviced. This takes care of a FIXME in the /sys/kernel/interrupts generator. Also, the lsirq command line tool now displays per-CPU call counts.
53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/JsonObjectSerializer.h>
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#include <Kernel/Arch/InterruptManagement.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Interrupts.h>
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#include <Kernel/Interrupts/GenericInterruptHandler.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT SysFSInterrupts::SysFSInterrupts(SysFSDirectory const& parent_directory)
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: SysFSGlobalInformation(parent_directory)
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{
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}
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UNMAP_AFTER_INIT NonnullLockRefPtr<SysFSInterrupts> SysFSInterrupts::must_create(SysFSDirectory const& parent_directory)
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{
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return adopt_lock_ref_if_nonnull(new (nothrow) SysFSInterrupts(parent_directory)).release_nonnull();
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}
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ErrorOr<void> SysFSInterrupts::try_generate(KBufferBuilder& builder)
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{
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auto array = TRY(JsonArraySerializer<>::try_create(builder));
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ErrorOr<void> result; // FIXME: Make this nicer
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InterruptManagement::the().enumerate_interrupt_handlers([&array, &result](GenericInterruptHandler& handler) {
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if (result.is_error())
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return;
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result = ([&]() -> ErrorOr<void> {
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auto obj = TRY(array.add_object());
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TRY(obj.add("purpose"sv, handler.purpose()));
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TRY(obj.add("interrupt_line"sv, handler.interrupt_number()));
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TRY(obj.add("controller"sv, handler.controller()));
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TRY(obj.add("device_sharing"sv, (unsigned)handler.sharing_devices_count()));
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auto per_cpu_call_counts = TRY(obj.add_array("per_cpu_call_counts"sv));
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for (auto call_count : handler.per_cpu_call_counts()) {
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TRY(per_cpu_call_counts.add(call_count));
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}
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TRY(per_cpu_call_counts.finish());
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TRY(obj.finish());
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return {};
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})();
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});
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TRY(result);
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TRY(array.finish());
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return {};
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}
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}
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