From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DAC882483; Mon, 10 Jun 2024 15:16:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718032579; cv=none; b=B4nFFNh0fhfFR1BUHFPKk4bSFroJWGD1mixVQ3v6G/HTHpV71QM2ptdt7un1oDA2JvDHL8ywwW02Sj2dyDEu0BmiFezkdLfz2rRY31OBLO1Ef6kN+GsXOL6Os/99WoUPbSWAAx4jIl7e6g0cOaSGmQYelzjfxyuKXtyOoC0oO5k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718032579; c=relaxed/simple; bh=7WETetKobdT3s6/DNAZaGWym4aHxPPI1/kHjkxitoXU=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=P4nYVsbhnK1wlq64iPc8zp/5t5qF2F3wf4F3hi5L1BcB8L4Hxli6hx7RwmD+Th2NgcDTHa9TibKMzFdlZ/yQgYU1Fw+/kTzsgp3Z35y1fUemhQKRO5KNWhKqKqxjw+5kMcbiT/XXNriQE5FgIK2/2kKKl9AEDmIXB7FB3hQvx30= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8C33C2BBFC; Mon, 10 Jun 2024 15:16:15 +0000 (UTC) Date: Mon, 10 Jun 2024 11:16:14 -0400 From: Steven Rostedt To: Andrii Nakryiko Cc: Masami Hiramatsu , Oleg Nesterov , Jiri Olsa , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-api@vger.kernel.org, linux-man@vger.kernel.org, x86@kernel.org, bpf@vger.kernel.org, Song Liu , Yonghong Song , John Fastabend , Peter Zijlstra , Thomas Gleixner , "Borislav Petkov (AMD)" , Ingo Molnar , Andy Lutomirski , "Edgecombe, Rick P" , Deepak Gupta , Linus Torvalds Subject: Re: [PATCHv7 bpf-next 0/9] uprobe: uretprobe speed up Message-ID: <20240610111614.1448e721@rorschach.local.home> In-Reply-To: References: <20240523121149.575616-1-jolsa@kernel.org> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 5 Jun 2024 09:42:45 -0700 Andrii Nakryiko wrote: > Another ping. It's been two weeks since Jiri posted the last revision > that got no more feedback to be addressed and everyone seems to be > happy with it. Sorry, there's been a lot going on. > > This is an important speed up improvement for uprobe infrastructure in > general and for BPF ecosystem in particular. "Uprobes are slow" is one > of the top complaints from production BPF users, and sys_uretprobe > approach is significantly improving the situation for return uprobes > (aka uretprobes), potentially enabling new use cases that previously > could have been too expensive to trace in practice and reducing the > overhead of the existing ones. > > I'd appreciate the engagement from linux-trace maintainers on this > patch set. Given it's important for BPF and that a big part of the > patch set is BPF-based selftests, we'd also be happy to route all this > through the bpf-next tree (which would actually make logistics for us > much easier, but that's not the main concern). But regardless of the > tree, it would be nice to make a decision and go forward with it. I'll be talking with Masami about this later today. -- Steve