From nobody Tue Feb 10 12:57:38 2026 Received: from mail-qk1-f194.google.com (mail-qk1-f194.google.com [209.85.222.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5AC973A9623 for ; Wed, 14 Jan 2026 22:13:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768428843; cv=none; b=Ow+gr8DUkCF68zkfSwFX9CAhNaBnTntpqfcx5YSJNpsMZzpTAf8tNL1dWo1ov4eyKEG3M8TEP4pzKcm1PcqRAjpV8NkLHZHxIQ/gQ4mduhVzM08yIuBqb7NmRJngxBGx2UCCsEdoPEAUyB4B0K4h2CKnWSAazpLz1FLEBNirk8o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768428843; c=relaxed/simple; bh=IZqAGizxkk9ErROuOBGZmrieBz1ow5xW+bA7VsOBVFI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Vp6IitxhSZW4kPB/S2PEaubJx2/mDsP8d2c99tnjHC28L+jcDBfbRzhIDYqv4ph85auXu3gCZ67Ulz/64sqLOUOon5bVcbmEQy2L7sxG/o/RAJH5LEJWzuCPDhpimpKy9fBFT7QwVh8ousr2X3075/uIesOfJjsA5qJAy83mBJQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=WO4tddO7; arc=none smtp.client-ip=209.85.222.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="WO4tddO7" Received: by mail-qk1-f194.google.com with SMTP id af79cd13be357-8c5384ee23fso32523885a.1 for ; Wed, 14 Jan 2026 14:13:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768428827; x=1769033627; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=WXFVdIECi6ilyP/TUQ5Ud/VbVwJbO6QDA7pbbRj1oPg=; b=WO4tddO7xAYYTf9hDsF5hBYqWylnDKYCtVCM3g5Bu2Ww9Xv17G0AZ3RiMCeQwCSxhU 8kaIqew1Cj+bgucV+m8L8PZirehadkRbtJqDSRXPk6rEmt4UXf5ZLqLsN8FjeHxc2ucX rFRcPDiPwEPOQNe8SIkaXBwBbgvZJ7+vJ5fSAPZTG9rZ2gnmlRdiJ+kSSgGcfToaxhzH Efftzc2YdIxe+P/RPDi1LM553BI1MzUamD99yYorWtKzygvlAiqb3RSrYdqJeFvjy4og gTm3gpiSpRgyPK1krhxxxZE3LdXKsVKfVMiyPoamSL+EEuLS3ioJgR1gA/jh5qHQBMEU 4hvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768428827; x=1769033627; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=WXFVdIECi6ilyP/TUQ5Ud/VbVwJbO6QDA7pbbRj1oPg=; b=AMFTx33FGvntRbhX2GZIda6W7vpwvDsmsr98Y0nuLgv5RMZOdgwMv/4vdkqSTXpMzh Fpw17rDDir72A5Ay4vAcfjNAzplTumZ271I6BuNk07VolXbuy0wdf4vExKd56GJDjLMz sygTppRPDyZpKxgC3e9bQ98IO9acdxxhhmXxU5RTjUXxWy5877Nf1BwPxKMMgmPO1h9U IgjEXhlfbfDFSoU1GG1cLDRbZvc/cN54EcT6LUwko08qK0XUpKh5xHJx1cx1l1voPCJu TMy3bAvIQqHBPIFSiPbYJ+Z/mST3i0VNoMIQtIxFFim2hq2RpkEV2rtt9y2pjXg8Ckeo qf9A== X-Forwarded-Encrypted: i=1; AJvYcCUJ3OlLk0VF5Ld9ayEClf1OxxBdXThntMKshPg9XXCa5eZDM9ePRuCscuAJp5dYRnVRJU64iLEcOWFRrQY=@vger.kernel.org X-Gm-Message-State: AOJu0YwYbUYseQdYG8n1ES77y2PQCh+3ZL32DV5yu3VQyW6PS/o9jKok sIiwjpEjXTpoJLSgOuOWugmmtklWbEt4EHG5L83IQjCLQcu7fYw52o5Q X-Gm-Gg: AY/fxX6Kv39ScYf6QFJS/bU+8yP1QGoCAue2maUpUVxLte4kZhzfm5CFx7i7HO/EMYD 0KLBxE5pfDLatGNOIvfgDS2Mqa/yrH00kcMqGpoEsV7G/t5XSWJ2BxZrRraUsIt4ZlhxrCIi3Rk qk6U2yk5ClRRiZglUTHohop1y9vco1/eUtC31wARpDYwLY6z7PxzVH7JezHmU+B+K0z9T1TTjef zNVHSV278/0QWpzMx7WuyeTsimqDVvet6S8N9PHcNn3VTNSau0NG8zoOifV0renyIyAh+plisHO jNZJsXKwqXZWEwLXZsPpo6bigZnaJrUEEHxoLdqYfCuLRQZcSYbFzQfqGFnKf/CiKNi15KGyAN/ ljZGiqb0C3JxFDXJv+XFEiA26PgwfPUfw+PNBTcb3rGGY6jUOQn9ek7MJCsD4JuFgOU7JvrdYPU Ph/TXnzba3vH8bhOagusgZ1ljrOcpU9Se2EFXQCK+STcyCwJf0r1I3PUHkqG/MragoBrrXFDw= X-Received: by 2002:a05:620a:29cc:b0:8b2:e1fa:6eab with SMTP id af79cd13be357-8c52fbb918bmr575020685a.62.1768428827000; Wed, 14 Jan 2026 14:13:47 -0800 (PST) Received: from pc.mynetworksettings.com ([2600:4041:4491:2000:c1bc:6046:8762:e96]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c530bb685fsm250007785a.44.2026.01.14.14.13.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jan 2026 14:13:46 -0800 (PST) From: "Seokwoo Chung (Ryan)" To: rostedt@goodmis.org, mhiramat@kernel.org, corbet@lwn.net, shuah@kernel.org Cc: mathieu.desnoyers@efficios.com, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, "Seokwoo Chung (Ryan)" Subject: [PATCH v5 2/3] docs: tracing/fprobe: Document list filters and :entry/:exit Date: Wed, 14 Jan 2026 17:13:39 -0500 Message-ID: <20260114221341.128038-3-seokwoo.chung130@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260114221341.128038-1-seokwoo.chung130@gmail.com> References: <20251126184110.72241-1-seokwoo.chung130@gmail.com> <20260114221341.128038-1-seokwoo.chung130@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Signed-off-by: Seokwoo Chung (Ryan) --- Documentation/trace/fprobetrace.rst | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/Documentation/trace/fprobetrace.rst b/Documentation/trace/fpro= betrace.rst index b4c2ca3d02c1..5efd9c374365 100644 --- a/Documentation/trace/fprobetrace.rst +++ b/Documentation/trace/fprobetrace.rst @@ -25,14 +25,19 @@ Synopsis of fprobe-events ------------------------- :: =20 - f[:[GRP1/][EVENT1]] SYM [FETCHARGS] : Probe on fun= ction entry - f[MAXACTIVE][:[GRP1/][EVENT1]] SYM%return [FETCHARGS] : Probe on fun= ction exit + f[:[GRP1/][EVENT1]] SYM [FETCHARGS] : Probe on function entry + f[MAXACTIVE][:[GRP1/][EVENT1]] SYM%return [FETCHARGS] : Probe on functio= n exit + f[:[GRP1/][EVENT1] SYM[,[!]SYM[,...][:entry|:exit] [FETCHARGS] : Probe on + list/wildcard t[:[GRP2/][EVENT2]] TRACEPOINT [FETCHARGS] : Probe on tra= cepoint =20 GRP1 : Group name for fprobe. If omitted, use "fprobes" for it. GRP2 : Group name for tprobe. If omitted, use "tracepoints" for= it. EVENT1 : Event name for fprobe. If omitted, the event name is - "SYM__entry" or "SYM__exit". + - For a single literal symbol, the event name is + "SYM__entry" or "SYM__exit". + - For a *list or any wildcard*, an explicit [GRP1/][EVENT1] is + required. EVENT2 : Event name for tprobe. If omitted, the event name is the same as "TRACEPOINT", but if the "TRACEPOINT" starts with a digit character, "_TRACEPOINT" is used. @@ -40,6 +45,13 @@ Synopsis of fprobe-events can be probed simultaneously, or 0 for the default value as defined in Documentation/trace/fprobe.rst =20 + SYM : Function name or comma-separated list of symbols. + - SYM prefixed with "!" are exclusions. + - ":entry" suffix means it probes entry of given symbols + (default) + - ":exit" suffix means it probes exit of given symbols. + - "%return" suffix means it probes exit of SYM (single + symbol). FETCHARGS : Arguments. Each probe can have up to 128 args. ARG : Fetch "ARG" function argument using BTF (only for functi= on entry or tracepoint.) (\*1) --=20 2.43.0