From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Song Liu <songliubraving@fb.com>
Cc: peterz@infradead.org, rostedt@goodmis.org, mingo@redhat.com,
davem@davemloft.net, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, daniel@iogearbox.net,
kernel-team@fb.com
Subject: Re: [PATCH 0/6] enable creating [k,u]probe with perf_event_open
Date: Tue, 21 Nov 2017 21:00:47 -0800 [thread overview]
Message-ID: <20171122050045.cjt4legewplt3yet@ast-mbp> (raw)
In-Reply-To: <20171115172339.1791161-1-songliubraving@fb.com>
On Wed, Nov 15, 2017 at 09:23:31AM -0800, Song Liu wrote:
> Changes RFC v2 to PATCH v1:
> Check type PERF_TYPE_PROBE in perf_event_set_filter().
> Rebase on to tip perf/core.
>
> Changes RFC v1 to RFC v2:
> Fix build issue reported by kbuild test bot by adding ifdef of
> CONFIG_KPROBE_EVENTS, and CONFIG_UPROBE_EVENTS.
>
> RFC v1 cover letter:
>
> This is to follow up the discussion over "new kprobe api" at Linux
> Plumbers 2017:
>
> 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.
Peter, Ingo,
could you please review the proposed perf_event_open api extension?
next prev parent reply other threads:[~2017-11-22 5:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-15 17:23 [PATCH 0/6] enable creating [k,u]probe with perf_event_open Song Liu
2017-11-15 17:23 ` [PATCH] bcc: Try use new API to create " Song Liu
2017-11-15 17:23 ` [PATCH 1/6] perf: Add new type PERF_TYPE_PROBE Song Liu
2017-11-23 10:02 ` Peter Zijlstra
2017-11-24 6:31 ` Alexei Starovoitov
2017-11-24 8:28 ` Peter Zijlstra
2017-11-26 1:59 ` Alexei Starovoitov
2017-11-27 7:58 ` Peter Zijlstra
2017-11-23 10:22 ` Peter Zijlstra
2017-11-30 1:43 ` Song Liu
2017-11-30 13:37 ` Peter Zijlstra
2017-11-15 17:23 ` [PATCH] perf_event_open.2: add " Song Liu
2017-11-15 17:23 ` [PATCH 2/6] perf: copy new perf_event.h to tools/include/uapi Song Liu
2017-11-15 17:23 ` [PATCH 3/6] perf: implement kprobe support to PERF_TYPE_PROBE Song Liu
2017-11-23 10:06 ` Peter Zijlstra
2017-11-15 17:23 ` [PATCH 4/6] perf: implement uprobe " Song Liu
2017-11-15 17:23 ` [PATCH 5/6] bpf: add option for bpf_load.c to use PERF_TYPE_PROBE Song Liu
2017-11-15 17:23 ` [PATCH 6/6] bpf: add new test test_many_kprobe Song Liu
2017-11-22 5:00 ` Alexei Starovoitov [this message]
2017-11-23 9:02 ` [PATCH 0/6] enable creating [k,u]probe with perf_event_open Christoph Hellwig
2017-11-23 9:49 ` Peter Zijlstra
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