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RE: Kprobes support for accessing args upon return
- From: "Stone, Joshua I" <joshua dot i dot stone at intel dot com>
- To: "Jim Keniston" <jkenisto at us dot ibm dot com>
- Cc: "SystemTAP" <systemtap at sources dot redhat dot com>
- Date: Thu, 7 Dec 2006 17:53:14 -0800
- Subject: RE: Kprobes support for accessing args upon return
On Thursday, December 07, 2006 4:42 PM, Jim Keniston wrote:
> On Wed, 2006-12-06 at 18:35, Frank Ch. Eigler wrote:
>> It seems to me that the current (new) syntax could work unchanged
>> for this alternate backend.
>
> Where is the new syntax documented? I didn't see it in the stap or
> stapprobes man pages.
If you reference a function parameter from a return probe, just as you
would in an entry probe, the translator will magically make the right
thing happen to save/restore the value.
Josh