Subject: [PATCH v5 06/10] Uprobes: Support SDT markers having reference count (semaphore)

From: [email-masked] (Oleg Nesterov)
Date: Tue, 3 Jul 2018 21:26:35 +0200

On 07/03, Ravi Bangoria wrote:
>
> Now about adding ref_ctr_offset into uprobe_consumer. Actually, I
> didn't want to change the uprobe_consumer definition because it's
> already exported and tools like systemtap are using it.

So what? Yes, the out-of-tree modules should be updated, but this doesn't
mean we can add the new features.

And, speaking of systemtap, it already has to do build-time checks to verify
that uprobe_consumer->ret_handler member exists. So it will need another
STAPCONF_INODE_REFCNT and that is all.

Oleg.