0 views collected around this technical thread.
This article explains the problem of internal and external memory fragmentation in Linux systems, introduces eBPF as a powerful tracing tool, and provides step‑by‑step guidance for building, loading, and running eBPF programs to analyze and mitigate fragmentation on both Linux and Android platforms.
This article explains how Linux system calls serve as the primary interface between user‑space programs and the kernel, describes the transition from user mode to kernel mode, and provides step‑by‑step debugging examples and source‑code snippets for x86_64 architectures.
The article explains how to use the Linux crash utility for efficient, on‑demand analysis of Android Kdump dumps on MTK and Qualcomm devices, covering dump loading parameters, baseline data collection, stack back‑tracing, local variable recovery, thread searching, and why crash outperforms memory‑heavy tools like trace32.
The article explains Linux hung‑task detection, detailing both a system‑wide polling method that compares unchanged D‑state task context‑switch counts and a watchdog approach for critical processes, describes kernel implementations, analysis of real‑world hang cases, and emphasizes log analysis and parameter tuning to prevent system hangs.
This article provides a comprehensive tutorial on configuring KGDB on Linux, covering target and host machine preparation, kernel recompilation with debugging options, module installation, boot‑loader adjustments, and detailed remote‑gdb debugging procedures for both the kernel image and loadable modules.