mirror of
https://github.com/RGBCube/serenity
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b02ee664e7
To do this we also need to get rid of LockRefPtrs in the USB code as well. Most of the SysFS nodes are statically generated during boot and are not mutated afterwards. The same goes for general device code - once we generate the appropriate SysFS nodes, we almost never mutate the node pointers afterwards, making locking unnecessary.
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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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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#if ARCH(X86_64)
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# include <Kernel/Arch/x86_64/ProcessorInfo.h>
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#endif
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/CPUInfo.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT SysFSCPUInformation::SysFSCPUInformation(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 NonnullRefPtr<SysFSCPUInformation> SysFSCPUInformation::must_create(SysFSDirectory const& parent_directory)
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{
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return adopt_ref_if_nonnull(new (nothrow) SysFSCPUInformation(parent_directory)).release_nonnull();
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}
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ErrorOr<void> SysFSCPUInformation::try_generate(KBufferBuilder& builder)
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{
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#if ARCH(X86_64)
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auto array = TRY(JsonArraySerializer<>::try_create(builder));
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TRY(Processor::try_for_each(
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[&](Processor& proc) -> ErrorOr<void> {
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auto& info = proc.info();
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auto obj = TRY(array.add_object());
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TRY(obj.add("processor"sv, proc.id()));
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TRY(obj.add("vendor_id"sv, info.vendor_id_string()));
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TRY(obj.add("family"sv, info.display_family()));
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if (!info.hypervisor_vendor_id_string().is_null())
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TRY(obj.add("hypervisor_vendor_id"sv, info.hypervisor_vendor_id_string()));
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auto features_array = TRY(obj.add_array("features"sv));
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auto keep_empty = SplitBehavior::KeepEmpty;
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TRY(info.features_string().for_each_split_view(' ', keep_empty, [&](StringView feature) {
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return features_array.add(feature);
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}));
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TRY(features_array.finish());
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TRY(obj.add("model"sv, info.display_model()));
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TRY(obj.add("stepping"sv, info.stepping()));
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TRY(obj.add("type"sv, info.type()));
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TRY(obj.add("brand"sv, info.brand_string()));
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auto caches = TRY(obj.add_object("caches"sv));
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auto add_cache_info = [&](StringView name, ProcessorInfo::Cache const& cache) -> ErrorOr<void> {
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auto cache_object = TRY(caches.add_object(name));
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TRY(cache_object.add("size"sv, cache.size));
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TRY(cache_object.add("line_size"sv, cache.line_size));
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TRY(cache_object.finish());
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return {};
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};
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if (info.l1_data_cache().has_value())
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TRY(add_cache_info("l1_data"sv, *info.l1_data_cache()));
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if (info.l1_instruction_cache().has_value())
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TRY(add_cache_info("l1_instruction"sv, *info.l1_instruction_cache()));
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if (info.l2_cache().has_value())
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TRY(add_cache_info("l2"sv, *info.l2_cache()));
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if (info.l3_cache().has_value())
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TRY(add_cache_info("l3"sv, *info.l3_cache()));
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TRY(caches.finish());
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TRY(obj.finish());
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return {};
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}));
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TRY(array.finish());
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return {};
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#elif ARCH(AARCH64)
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(void)builder;
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dmesgln("TODO: Implement ProcessorInfo for AArch64!");
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return Error::from_errno(EINVAL);
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#else
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# error Unknown architecture
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#endif
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}
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}
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