CONFIG_X86_PTRACE_BTS: Branch Trace Store

General informations

The Linux kernel configuration item CONFIG_X86_PTRACE_BTS:

• prompt: Branch Trace Store
• type: bool
• depends on: ( CONFIG_X86_DEBUGCTLMSR ) && ( CONFIG_BROKEN )
• defined in arch/x86/Kconfig.cpu
• found in Linux kernels: 2.6.28–2.6.34

Help text

This adds a ptrace interface to the hardware's branch trace store.

Debuggers may use it to collect an execution trace of the debugged application in order to answer the question 'how did I get here?'. Debuggers may trace user mode as well as kernel mode.

Say Y unless there is no application development on this machine and you want to save a small amount of code size.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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