On Sat, 26 Jan 2008 23:52:48 +0530 Abhishek Sagar <[EMAIL PROTECTED]> wrote:
> This is a repost of a patch which was reviewed earlier at: > http://lkml.org/lkml/2007/11/13/58 (thanks to Jim Keniston and Srinivasa for > their review comments). This provides support to add an optional user defined > callback to be run at function entry of a kretprobe'd function. It also > modifies the kprobe smoke tests to include an entry-handler during the > kretprobe sanity test. > Neither the changelog nor the newly-added documentation explain why Linux needs this feature. What will it be used for?? > +1.3.2 Kretprobe entry-handler > + > +Kretprobes also provides an optional user-specified handler which runs I think "caller-specified" would be a better term here. Generally "user" refers to Aunt Tillie sitting at the keyboard. > +/* Timestamp function entry. */ > +static int entry_handler(struct kretprobe_instance *ri, struct pt_regs *regs) > +{ > + struct my_data *data; > + > + if(!current->mm) > + return 1; /* skip kernel threads */ gargh, what's happened to checkpatch lately? It failed to notice the missing space. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
