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From: Ingo Molnar <mingo@kernel.org>
To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Pratyush Anand <panand@redhat.com>,
	Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Rob Landley <rob@landley.net>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH tip/master 1/3] kprobes: Support blacklist functions in module
Date: Fri, 17 Jul 2015 14:10:37 +0200	[thread overview]
Message-ID: <20150717121037.GA9437@gmail.com> (raw)
In-Reply-To: <20150716071055.14218.64129.stgit@localhost.localdomain>


* Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> wrote:

> To blacklist the functions in a module (e.g. user-defined
> kprobe handler and the functions invoked from it), expand
> blacklist support for modules.
> With this change, users can use NOKPROBE_SYMBOL() macro in
> their own modules.

Btw., whatever happened with renaming '__kprobes' to '__nokprobe' and using that 
consistently to blacklist certain functions?

Also, shouldn't we convert such instances:

	static int notifier_call_chain(struct notifier_block **nl,
                               unsigned long val, void *v,
                               int nr_to_call, int *nr_calls)

	...

	NOKPROBE_SYMBOL(notifier_call_chain);

to:

	static int __nokprobe notifier_call_chain(struct notifier_block **nl,
                               unsigned long val, void *v,
                               int nr_to_call, int *nr_calls)

?

I.e. instead of extending it to modules we should eliminate NOKPROBE_SYMBOL() in 
favor of marking functions as __nokprobe which is the standard syntax for marking 
functions.

Thanks,

	Ingo

  parent reply	other threads:[~2015-07-17 12:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-16  7:10 [PATCH tip/master 0/3] kprobes blacklist enhancement Masami Hiramatsu
2015-07-16  7:10 ` [PATCH tip/master 1/3] kprobes: Support blacklist functions in module Masami Hiramatsu
2015-07-16 11:34   ` Rusty Russell
2015-07-17 12:10   ` Ingo Molnar [this message]
2015-07-19  3:15     ` Masami Hiramatsu
2015-07-21  7:48       ` Ingo Molnar
2015-07-21 10:19         ` Masami Hiramatsu
2015-07-16  7:10 ` [PATCH tip/master 2/3] kprobes: Use NOKPROBE_SYMBOL() in sample modules Masami Hiramatsu
2015-07-16  7:10 ` [PATCH tip/master 3/3] kprobes/x86: Use kprobe_blacklist for .kprobes.text and .entry.text Masami Hiramatsu

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