[ktap] Re: [PATCH] add new symbol module to search symbols in DSO (for uprobes)
- From: Azat Khuzhin <a3at.mail@xxxxxxxxx>
- To: ktap <ktap@xxxxxxxxxxxxx>
- Date: Thu, 7 Nov 2013 07:55:51 +0400
On 7 Nov 2013 07:29, "Jovi Zhangwei" <jovi.zhangwei@xxxxxxxxx> wrote:
>
> On Wed, Nov 6, 2013 at 5:51 PM, Azat Khuzhin <a3at.mail@xxxxxxxxx> wrote:
> > This will allow to don't hardcoding addresses of functions in ktap
> > scripts, that use uprobes, but instead, use normal function names.
> >
> > Before this patch:
> > $ ktap -e 'trace probe:/path/to/bin:0xDEADBEAF' # instead some real
address
> >
> > After this path:
> > $ ktap -e 'trace probe:/path/to/bin:foo'
> >
> > Works also for ret probes (%return)
> > Requires libelf.
> >
> > Have NO_LIBELF option for makefile, for cross-builds.
> >
> > Signed-off-by: Azat Khuzhin <a3at.mail@xxxxxxxxx>
> > ---
> > v2: make it more pretty
> > v3: make it faster (thanks to Yicheng)
> > v4: add NO_LIBELF option into Makefile, and more common parsing
> > v5: fix leaking of "tail"
> > v6: coding styles fixes
> >
> Applied, thank you.
>
> Now we can use symbol(like malloc and free) in ktap uprobe scripts, a big
step.
Nice!
I see you also changed examples, thanks.
>
> Jovi
>
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