From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792550553; b=kIZRjvKm3mIDGhExQEb1Y1NZx1vRUOynX+V9ZbFdJo+UdqLY9+mhM7ZB5hd3BzeDIsNc f0Z497Rx/Ipir59bcaVWYU/R/NtFHR8m0UEWkGjEAv5fu88D9mUPIz+rERXyLYE3u4Rxf ERuOAPqCjAUEvcOzj4aXdWNnzwbFMBtKv2cw1pC7mZX/S1hw7+eZASz90y7KmKG3E7opZ Dg2Ys0Q0cKl/+Lofq9vfkOnuvyqLAMPG97CadLbpbRWHmBtq5Y/y1AEn7IhnrcQKns2FX NbL7ld+21DtNtdyItUoWSP/qMRDenfozc6MfQ8N3R8OfNX4R9LTy9rdqxOo8hDslTlw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792550553; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=MrBXikXoDsgqnrwH3iCkGXjYQkI4gJExlYUUvjkuDv8=; b=vG5K20WAM+kwSBkKwfNHKh8rwRgdju3JsMmC5dqR56mO8GoFe1r2uSUmoyKs9fTEhESd +SWqPLzOAvw5/nLDvubLc4U6noN5LpId5s720YjLM7JNrMgHJVg0d7ywvG/3PmfHelFnZ 4JL/g4MyAIcfG+nwC8O1UMPBn18JXcPjB3VBDWSWh6kP0firRbPm/dAzLCNlhTVflUUoN 6TTUOILsyngKNZmxs+Ag83N9/3Gw1DwlpCdPMrEyFN8UHSubIVntoImsP5wpMm1rhd8bl ZNB4hwGjDX5HarkU5LmD7ZieQMOlOjFBysLgSamrBC0O+DLE9mXxF2MoP1swmDmTtMw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=LEBxmszW; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3326D606A319 for ; Wed, 21 Oct 2026 02:42:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=LEBxmszW Received: by smtp.kernel.org (Postfix) with ESMTPSA id 87C7E1F000C9; Wed, 21 Oct 2026 02:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792550552; bh=MrBXikXoDsgqnrwH3iCkGXjYQkI4gJExlYUUvjkuDv8=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=LEBxmszWbJmeRJK6oWH+O+R84uiAnIMq68FxxXld4Yqb+UbylecJF7xSeWXQ44rfa SZBBL+nGgxiDIJ5BLAtStYZI2DQnkvBfoS/oRspyIB61QfyDquopxVHROVoNqgzHEj Z93zMWPZj6DABayV+i4PlbrV4OcXDpsZc16bbkF7SyBR7DbJplKf7+3VEbRSvjwmiw FBaO3O05VP7UKsTBs5jP6ialgsljztlleQF+jnnAL5IYr6W3Pk4MdiWtV7kgjodv18 iTvoOQeCf+lrd6x8D+tgy+pwky5VdI30tJg3DhQh1DmXZB+xL2UJ1jrAJ3UBMVdeNu O9UJX13CU6kMQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH perf-tools-next v9 4/6] perf ftrace: Support display of inlined functions in function graph tracer Reply-To: sashiko-reviews@lists.linux.dev To: "Aaron Tomlin" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261021023337.809936-5-atomlin@atomlin.com> References: <20261021023337.809936-1-atomlin@atomlin.com> <20261021023337.809936-5-atomlin@atomlin.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Wed, 21 Oct 2026 02:42:32 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > The Linux kernel's function graph tracer operates at the machine > instruction level via compiler instrumentation > (-fpatchable-function-entry), recording entry and return events for > physical function calls. Consequently, functions inlined by the compiler > are invisible in the resulting call graph, as no discrete call or return > instructions are emitted for them. While technically expected, this > omission frequently obscures the logical execution flow when analysing > kernel subsystems heavily reliant upon inlining. >=20 > Address this by introducing the --inline option to perf ftrace for the > function_graph tracer. >=20 > When the kernel is configured with CONFIG_FUNCTION_GRAPH_RETADDR=3Dy, the > funcgraph-retaddr trace option records the caller's return address on > each function entry, manifested in the trace stream as a comment > [ ... ] > toggles, bare closing braces handling, task context-switch > isolation and migration, and stack saturation/overflow recovery. >=20 > Assisted-by: Antigravity:gemini-3.1-pro > Signed-off-by: Aaron Tomlin Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261021023337.8099= 36-1-atomlin@atomlin.com?part=3D4