linux-kernel - Re: The state of uprobes work and logistics

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Message-ID: <20241106110557.GY33184@noisy.programming.kicks-ass.net>
Date: Wed, 6 Nov 2024 12:05:57 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc: Jiri Olsa <olsajiri@...il.com>, Ingo Molnar <mingo@...nel.org>,
	Will Deacon <will@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Mark Rutland <mark.rutland@....com>,
	Linux trace kernel <linux-trace-kernel@...r.kernel.org>,
	bpf <bpf@...r.kernel.org>, Oleg Nesterov <oleg@...hat.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Liao Chang <liaochang1@...wei.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>,
	"linux-perf-use." <linux-perf-users@...r.kernel.org>,
	Kernel Team <kernel-team@...a.com>
Subject: Re: The state of uprobes work and logistics

On Wed, Nov 06, 2024 at 11:46:39AM +0100, Peter Zijlstra wrote:
> On Tue, Nov 05, 2024 at 06:11:07PM -0800, Andrii Nakryiko wrote:
> > On Wed, Oct 30, 2024 at 2:42 AM Jiri Olsa <olsajiri@...il.com> wrote:
> > >
> > > On Wed, Oct 16, 2024 at 12:35:21PM -0700, Andrii Nakryiko wrote:
> > >
> > > SNIP
> > >
> > > >   - Jiri Olsa's uprobe "session" support ([5]). This is less
> > > > performance focused, but important functionality by itself. But I'm
> > > > calling this out here because the first two patches are pure uprobe
> > > > internal changes, and I believe they should go into tip/perf/core to
> > > > avoid conflicts with the rest of pending uprobe changes.
> > > >
> > > > Peter, do you mind applying those two and creating a stable tag for
> > > > bpf-next to pull? We'll apply the rest of Jiri's series to
> > > > bpf-next/master.
> > >
> > >
> > > Hi Ingo,
> > > there's uprobe session support change that already landed in tip tree,
> > > but we have bpf related changes that need to go in through bpf-next tree
> > >
> > > could you please create the stable tag that we could pull to bpf-next/master
> > > and apply the rest of the uprobe session changes in there?
> > 
> > Ping. We (BPF) are blocked on this, we can't apply Jiri's uprobe
> > session series ([0]), until we merge two of his patches that landed
> > into perf/core. Can we please get a stable tag which we can use to
> > pull perf/core's patches into bpf-next/master?
> 
> The whole tip/perf/core should be stable, but let me try and figure out
> how git tags work.. might as well read a man-page today.

I might have managed to create a perf-core-for-bpf-next tag, but I'm not
sure I know enough about git to even test it.

Let me know..