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Re: [PATCH][kprobe]disallow kprobes on emulate_step function

From: fche at redhat dot com (Frank Ch. Eigler)
To: Li Guanglei <guanglei at cn dot ibm dot com>
Cc: systemtap at sources dot redhat dot com
Date: 31 Oct 2006 11:38:53 -0500
Subject: Re: [PATCH][kprobe]disallow kprobes on emulate_step function
References: <454713AF.9030307@cn.ltcfwd.linux.ibm.com> <20061031095118.GA14460@in.ibm.com> <45474A8C.2030207@cn.ibm.com>

Li Guanglei <guanglei@cn.ibm.com> writes:

> [...]  So now the questions is, shall we mark all functions appeared
> in the call path to kprobe with __kprobes?

Yes, and also into the translator's blacklist.

> If so, then these functions will be put in __kprobe section. Will
> this have a negative performance impact because of the lower hit
> ratio of instruction cache?

This seems to be an unfortunate necessity.

- FChE

References:
- [PATCH][kprobe]disallow kprobes on emulate_step function
  - From: Gui,Jian
- Re: [PATCH][kprobe]disallow kprobes on emulate_step function
  - From: Ananth N Mavinakayanahalli
- Re: [PATCH][kprobe]disallow kprobes on emulate_step function
  - From: Li Guanglei

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