linux-kernel - Re: [External] Re: [PATCH bpf-next v2 8/9] libbpf: add support for the multi-link of tracing

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Date: Wed, 13 Mar 2024 09:14:03 +0800
From: 梦龙董 <dongmenglong.8@...edance.com>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: Andrii Nakryiko <andrii@...nel.org>, Alexei Starovoitov <ast@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, Martin KaFai Lau <martin.lau@...ux.dev>, Eddy Z <eddyz87@...il.com>, 
	Song Liu <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, 
	John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
	Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	Alexander Gordeev <agordeev@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ux.ibm.com>, 
	Sven Schnelle <svens@...ux.ibm.com>, "David S. Miller" <davem@...emloft.net>, 
	David Ahern <dsahern@...nel.org>, Dave Hansen <dave.hansen@...ux.intel.com>, 
	X86 ML <x86@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, 
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Quentin Monnet <quentin@...valent.com>, 
	bpf <bpf@...r.kernel.org>, 
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, LKML <linux-kernel@...r.kernel.org>, 
	linux-riscv <linux-riscv@...ts.infradead.org>, linux-s390 <linux-s390@...r.kernel.org>, 
	Network Development <netdev@...r.kernel.org>, linux-trace-kernel@...r.kernel.org, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, linux-stm32@...md-mailman.stormreply.com
Subject: Re: [External] Re: [PATCH bpf-next v2 8/9] libbpf: add support for
 the multi-link of tracing

On Wed, Mar 13, 2024 at 12:12 AM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Mon, Mar 11, 2024 at 7:44 PM 梦龙董 <dongmenglong.8@...edance.com> wrote:
> >
> > On Tue, Mar 12, 2024 at 9:56 AM Alexei Starovoitov
> > <alexei.starovoitov@...il.com> wrote:
> > >
> > > On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
> > > <dongmenglong.8@...edance.com> wrote:
[...]
> > > Pls use glob_match the way [ku]probe multi are doing
> > > instead of exact match.
> >
> > Hello,
> >
> > I'm a little suspecting the effect of glob_match. I seldom found
> > the use case that the kernel functions which we want to trace
> > have the same naming pattern. And the exact match seems more
> > useful.
> >
> > Can we use both exact and glob match here?
>
> exact is a subset of glob_match.
> Pls follow the pattern that[ku]probe multi established
> in terms of user interface expectations.

Okay!