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10
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# eBPF Beginner's Development Tutorial Ten: Capturing Interrupt Events in eBPF Using hardirqs or softirqs
# eBPF Tutorial by Example 10: Capturing Interrupt Events Using hardirqs or softirqs
eBPF (Extended Berkeley Packet Filter) is a powerful network and performance analysis tool on the Linux kernel. It allows developers to dynamically load, update, and run user-defined code at runtime in the kernel.
This article is the tenth part of the eBPF Beginner's Development Tutorial, focusing on capturing interrupt events using hardirqs or softirqs in eBPF.
This article is the tenth part of the eBPF Tutorial by Example, focusing on capturing interrupt events using hardirqs or softirqs in eBPF.
hardirqs and softirqs are two different types of interrupt handlers in the Linux kernel. They are used to handle interrupt requests generated by hardware devices, as well as asynchronous events in the kernel. In eBPF, we can use the eBPF tools hardirqs and softirqs to capture and analyze information related to interrupt handling in the kernel.
## What are hardirqs and softirqs?
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The code for Softirq is similar, and I won't elaborate on it here.
## Run code.Translated content:
## Run code.Translated content
"eunomia-bpf is an open-source eBPF dynamic loading runtime and development toolchain that combines Wasm. Its purpose is to simplify the development, building, distribution, and execution of eBPF programs. You can refer to <https://github.com/eunomia-bpf/eunomia-bpf> to download and install the ecc compilation toolchain and ecli runtime. We use eunomia-bpf to compile and run this example.
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## Summary
In this chapter (eBPF Getting Started Tutorial Ten: Capturing Interrupt Events in eBPF with Hardirqs or Softirqs), we learned how to capture and analyze the execution information of hardware interrupt handlers (hardirqs) in the kernel using eBPF programs. We explained the example code in detail, including how to define data structures, mappings, eBPF program entry points, and how to call helper functions to record execution information at the entry and exit points of interrupt handlers.
In this chapter (eBPF Tutorial by Example Ten: Capturing Interrupt Events in eBPF with Hardirqs or Softirqs), we learned how to capture and analyze the execution information of hardware interrupt handlers (hardirqs) in the kernel using eBPF programs. We explained the example code in detail, including how to define data structures, mappings, eBPF program entry points, and how to call helper functions to record execution information at the entry and exit points of interrupt handlers.
By studying the content of this chapter, you should have mastered the methods of capturing interrupt events with hardirqs or softirqs in eBPF, as well as how to analyze these events to identify performance issues and other problems related to interrupt handling in the kernel. These skills are crucial for analyzing and optimizing the performance of the Linux kernel.
To better understand and practice eBPF programming, we recommend reading the official documentation of eunomia-bpf: <https://github.com/eunomia-bpf/eunomia-bpf>. In addition, we provide a complete tutorial and source code for you to view and learn from at <https://github.com/eunomia-bpf/bpf-developer-tutorial>. We hope this tutorial can help you get started with eBPF development smoothly and provide useful references for your further learning and practice."
To better understand and practice eBPF programming, we recommend reading the official documentation of eunomia-bpf: <https://github.com/eunomia-bpf/eunomia-bpf>. In addition, we provide a complete tutorial and source code for you to view and learn from at <https://github.com/eunomia-bpf/bpf-developer-tutorial>.