From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) (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 600A73218DD; Thu, 12 Mar 2026 15:24:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773329053; cv=none; b=cb8qOq67rqiZQxV578I8pkQv7tZBnWuklLo5tEDEOcRnEUwJgf6/uQerlEFg2dKwsA23nxP2jhH0o/JWRMP1P+WsZawOjdXG2dt0lT2Bc04gTEAmj47LuOkpJLxWL1+Zy7XvD3k+BhtRqFmjrF75v+IXHpwBt6PUx4iirNwNov8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773329053; c=relaxed/simple; bh=sytxWOkyDIIeHX5CMaw9a1LerCjjFeV5ZrZULOHHkHE=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=eM1BHZwlq502mCNheCYMt1io97d/3/dKuHq3cMGA2MrcfkyQFTBCbreDEdyzXifHxLU4NJIYVQPFZN9x0AKM5PbSUJSomDrtQjEPU+8mU5G7nKVrtAq8gNBp9DitkYe3TNI5ikysoJmdpuj68NzV0sbY2wmFdGmsA/y6/eBRYBs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 37E651A01EF; Thu, 12 Mar 2026 15:24:06 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf01.hostedemail.com (Postfix) with ESMTPA id 087CE60010; Thu, 12 Mar 2026 15:23:39 +0000 (UTC) Date: Thu, 12 Mar 2026 11:23:54 -0400 From: Steven Rostedt To: Mathieu Desnoyers Cc: "Vineeth Pillai (Google)" , Peter Zijlstra , Dmitry Ilvokhin , Masami Hiramatsu , Ingo Molnar , Jens Axboe , io-uring@vger.kernel.org, "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Marcelo Ricardo Leitner , Xin Long , Jon Maloy , Aaron Conole , Eelco Chaudron , Ilya Maximets , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-sctp@vger.kernel.org, tipc-discussion@lists.sourceforge.net, dev@openvswitch.org, Oded Gabbay , Koby Elbaz , dri-devel@lists.freedesktop.org, "Rafael J. Wysocki" , Viresh Kumar , "Gautham R. Shenoy" , Huang Rui , Mario Limonciello , Len Brown , Srinivas Pandruvada , linux-pm@vger.kernel.org, MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Christian =?UTF-8?B?S8O2bmln?= , Sumit Semwal , linaro-mm-sig@lists.linaro.org, Eddie James , Andrew Jeffery , Joel Stanley , linux-fsi@lists.ozlabs.org, David Airlie , Simona Vetter , Alex Deucher , Danilo Krummrich , Matthew Brost , Philipp Stanner , Harry Wentland , Leo Li , amd-gfx@lists.freedesktop.org, Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org, Wolfram Sang , linux-i2c@vger.kernel.org, Mark Brown , Michael Hennerich , Nuno =?UTF-8?B?U8Oh?= , linux-spi@vger.kernel.org, "James E.J. Bottomley" , "Martin K. Petersen" , linux-scsi@vger.kernel.org, Chris Mason , David Sterba , linux-btrfs@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 00/15] tracepoint: Avoid double static_branch evaluation at guarded call sites Message-ID: <20260312112354.3dd99e36@gandalf.local.home> In-Reply-To: <1e3c2830-765e-4271-89f7-0b6784b37597@efficios.com> References: <20260312150523.2054552-1-vineeth@bitbyteword.org> <1e3c2830-765e-4271-89f7-0b6784b37597@efficios.com> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: h3739pmr1eu9bg7iohjao1rrs3tokc6z X-Rspamd-Server: rspamout08 X-Rspamd-Queue-Id: 087CE60010 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX18y4imWQ5s/jJLRD+ifAQxkW+/MJIrfF8g= X-HE-Tag: 1773329019-951038 X-HE-Meta: U2FsdGVkX19VCvtnyeXLm8RYcE/0528Of+u4uh+xWXIoIUAMDgzoBtHgAKGT8nAF/MB27RV3F/HBU7N8Yq3nctz4CjyozsdN+JtQpjXgcPgQ91Udi/zn6KJIrxNJApkTGgQNfwjA1AIJPhvzXyH3aMyWbdyoGtBKFOnq4RRJYVOvsob0d/ffWToVP4J5RUsRMz0qpdmi3Iljf9FrVu7POde112UEVgFi8OQXvPdVYuTecw25DZQQ5ipeWXW6Kr0xXH7b2TXafPsVNaEyw+eNEKMINQbygT33slpoLqfF/VxxC3FTWBQ/CxruNZ4auDV5bvilUFV4TL+gv3A/9X1r2mUEs0jEp6JnA2gRI3WDauIvML8TIfmFKXYkIboJC7/W On Thu, 12 Mar 2026 11:12:41 -0400 Mathieu Desnoyers wrote: > > if (trace_foo_enabled() && cond) > > trace_invoke_foo(args); /* calls __do_trace_foo() directly */ > > FYI, we have a similar concept in LTTng-UST for userspace > instrumentation already: > > if (lttng_ust_tracepoint_enabled(provider, name)) > lttng_ust_do_tracepoint(provider, name, ...); > > Perhaps it can provide some ideas about API naming. I find the word "invoke" sounding more official than "do" ;-) Note, Vineeth came up with the naming. I would have done "do" but when I saw "invoke" I thought it sounded better. -- Steve