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(unknown [4.155.48.126]) by linux.microsoft.com (Postfix) with ESMTPSA id 6DDD520B7001; Wed, 3 Jul 2024 15:26:50 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 6DDD520B7001 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1720045610; bh=VxOS5jnbA0Lf+6v1MBAkXU6TPJciosuFNl3HvdPNn6c=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=iYeJHUmcJAvo9XetcxRm48+P4V1WJQBWYGeMQJIVJk11tNhseVXjjCOLPi+V/wKS9 2vKzvOZNl5UoSS+gdJvqbw/oC5yktnm71yqL+g649SzJMcjcbRkw83ATX80eeWuOxA R5dXbgloSUJbwjpZKZ/+eQqNADRGrMf2hQbSngtk= Date: Wed, 3 Jul 2024 22:26:46 +0000 From: Beau Belgrave To: Steven Rostedt Cc: Mathieu Desnoyers , "Dmitry V. Levin" , Vincent Donnefort , mhiramat@kernel.org, kernel-team@android.com, rdunlap@infradead.org, rppt@kernel.org, david@redhat.com, linux-trace-kernel@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, Linus Torvalds Subject: Re: [PATCH v23 3/5] tracing: Allow user-space mapping of the ring-buffer Message-ID: <20240703222646.GA2025-beaub@linux.microsoft.com> References: <20240510140435.3550353-1-vdonnefort@google.com> <20240510140435.3550353-4-vdonnefort@google.com> <20240630105322.GA17573@altlinux.org> <20240630084053.0b506916@rorschach.local.home> <9a9c8ea4-8e17-4e7e-95fe-7b51441a228c@efficios.com> <20240702111807.13d2dd2c@rorschach.local.home> <20240702125126.50a6267c@rorschach.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240702125126.50a6267c@rorschach.local.home> X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: BDBD840014 X-Stat-Signature: rgftupn1cntr3tir58hxqc35s3mj5nsz X-Rspam-User: X-HE-Tag: 1720045611-455636 X-HE-Meta: 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 iMXcpzYG 6Q0n5Lj3ZnuW0qAZQdzuIEV4iYncrUWlbB3Y3Aci/tB3xOUZDbeisG6XisH+cyn5Uo0MU2zUVRuUUwuOWpyLE63gJ6D3uAjf/Z/NKFKTciTrAPHesYGeXeyaGaK+U7v11JM4qRuRWoB1hOWHjQ/RqEeUC23OWdtfx1oDdU7oq+wulncgp1L+lQSXA6kXeZ1Hn7L7Zq6Afvd2+NgCxkHW58iPztEDroJYhnk0Cx/bD5VY/uE5yaDXdEwLbMYKJ47Z5ilFURFYj9A3cW3NCXOiQyaGGq4OZZ+HZl4SMQcl0T9fcTVGDPXbbRgzwKG6HPDddRBdaoSxEYm9YkIMV2pWbRV6fKR3W3U5KBQjrCRgYYXoUM38eusQubjyt6VA6zu7vfvYaktZbiU4NSNautPTL+jsCNGclOjVeRwn6XamJkvaFnvs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jul 02, 2024 at 12:51:26PM -0400, Steven Rostedt wrote: > On Tue, 2 Jul 2024 11:32:53 -0400 > Mathieu Desnoyers wrote: > > > If we use '*' for user events already, perhaps we'd want to consider > > using the same range for the ring buffer ioctls ? Arguably one is > > about instrumentation and the other is about ring buffer interaction > > (data transport), but those are both related to tracing. > > Yeah, but I still rather keep them separate. > > Beau, care to send a patch adding an entry into that ioctl document for > user events? > > -- Steve Sure thing, sent one out [1]. Thanks, -Beau 1. https://lore.kernel.org/linux-doc/20240703222501.1547-1-beaub@linux.microsoft.com/