tag

#printk

2 posts

LinuxDeep Dive October 4, 2026 7 min read

Linux printk Ring Buffer: Sequence, Retention, and /dev/kmsg Evidence

Read Linux kernel logs as bounded printk records, distinguish console filtering from retention, and preserve evidence before ring-buffer overwrite.

#linux#printk#kernel

LinuxHow-To October 3, 2026 7 min read

Use Linux dynamic debug selectors to enable targeted pr_debug and dev_dbg call sites, control log volume, and restore the prior kernel logging state.

#linux#kernel#diagnostics