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Message-Id: <97e2c641-9dfe-bf7c-9043-c79fa0c568f9@linux.vnet.ibm.com> Date: Tue, 10 Apr 2018 10:15:05 +0530 From: Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com> To: Song Liu <songliubraving@...com> Cc: peterz@...radead.org, rostedt@...dmis.org, mingo@...hat.com, davem@...emloft.net, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, daniel@...earbox.net, kernel-team@...com, Oleg Nesterov <oleg@...hat.com>, "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com> Subject: Re: [PATCH v5 0/6] enable creating [k,u]probe with perf_event_open Hi Song, On 12/07/2017 04:15 AM, Song Liu wrote: > With current kernel, user space tools can only create/destroy [k,u]probes > with a text-based API (kprobe_events and uprobe_events in tracefs). This > approach relies on user space to clean up the [k,u]probe after using them. > However, this is not easy for user space to clean up properly. > > To solve this problem, we introduce a file descriptor based API. > Specifically, we extended perf_event_open to create [k,u]probe, and attach > this [k,u]probe to the file descriptor created by perf_event_open. These > [k,u]probe are associated with this file descriptor, so they are not > available in tracefs. Sorry for being late. One simple question.. Will it be good to support k/uprobe arguments with perf_event_open()? Do you have any plans about that? Thanks, Ravi
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