ber_memfree - Linux
Overview
ber_memfree is a memory management utility used on the Berkeley Packet Filter (BPF). It provides a means to manage and free BPF memory explicitly, allowing users to optimize memory usage and prevent memory leaks.
Syntax
ber_memfree [-h] [-c] <address>
Options/Flags
- -h: Display help and usage information.
- -c: Compact memory by moving allocated memory to the beginning of the memory region.
Examples
Simple Memory Freeing
ber_memfree 0x1000
Compacting Memory
ber_memfree -c 0x1000
Common Issues
- Using invalid memory addresses can lead to errors or unexpected behavior.
- Incorrectly freeing memory can result in memory leaks.
Integration
ber_memfree is typically used in conjunction with other BPF-related commands, such as ber_load and ber_unload.
Related Commands
- ber_load: Loads a BPF program into memory.
- ber_unload: Unloads a BPF program from memory.
- bpf: The BPF compiler and interpreter.