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=1794582810; b=X05zOBIhi3YVG/IAOvodRF2aQAsRGOZwwT71ECRQzopP34RuAy0TWoC1NZifHn0DHZUn rST0gFkx2ab14rDzg1QWG5fLleuA0C+meWbq3ghN+0ziSNH8263zdjZi99mypokTkO542 ZllVXw6l82BDEAfJyJ5R3oqUhRc5VweXyWqpnMRdGyX/HWJ1OLQd67l8OhXnP1PEmw4e9 NFuakDx5YCx5JBSeTt/je9bYN5ihQk8ETYbe4Kf9AmuChLKFOG/tl1NNYeJnssUxQuXSf SorR/44d/q1zzFB5dizKQJ0lWndw3DvUAvdoAYbIh02hNU846Oiu/h05rw5MXqsL8HA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794582810; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=MoP2S/ZlEQAlYawBhX7E6bsTOIUofYk8sFHL1XHC1yA=; b=fpaPBX5tLVhBuQnxJT38GxFGzESMxVI0zzYB2/tCbVPuDd3mToLYdtcOySkQMymyR2BZ OgcpxaJEFcrwrBuAyMEyvHQa75KIeVY2RCNfJaxxgSm74e8Yv3yTkqN7ydYKT2c6Dv+b5 lwKX/SYSHjfd061VND6UVK+Qvj7Rcf6JHEJolvy9gJWwTkS9+TZ2ISuUDZsp+ZwVxmzb4 5l8oQarZxeD16aH8+JpaumMUKbU1RZ/r4b7NJRQTrN+SZF1PKLNcBH9NlaKuuCL9Cg3Rx B6g91Zxt1j5NsryG6Fqw4h791dv6U5EGlwhkcQu03za//Bm6oHoBaX4iYGxGG+Kg61g== 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=nVQ75YhV; 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 B77DD606A32D for ; Fri, 13 Nov 2026 15:13:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=nVQ75YhV Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2824B1F000C4; Fri, 13 Nov 2026 15:13:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794582810; bh=MoP2S/ZlEQAlYawBhX7E6bsTOIUofYk8sFHL1XHC1yA=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=nVQ75YhV8tzeWYiQp/DsYeu/jFWjBE46nxelakn8jt6vH024nfYb5XZMjN+pLX91/ 1YOcsQJ6aPgrG9yhK0RTTMf41yRdx9aoWx2g/btpIhNhYD1tL4UbX4nEZbkntQ9uHL TXw0/6ap5IhTuHqsLjeaL+dFOCE9sUWV9GHsjtxfM8b2NsIO8fRbHnD9Wi4gDxoi3V sXCI9IdDTWX/ePfAm7iQp+nueKQGy8UMlZXDD9K7SMSOuXDm4SeHdDTCMbwWovJm9e n8fbcdRkRiMcAg9K/lzXLLeacIcIlDFNMRLEtC185WsRGTgIsEheXEdW0NiAN2lBGO G1mWOnPZL90eQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v1 05/12] perf tests: Exercise data type resolution from a register Reply-To: sashiko-reviews@lists.linux.dev To: "Arnaldo Carvalho de Melo" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261113150555.1163049-6-acme@kernel.org> References: <20261113150555.1163049-1-acme@kernel.org> <20261113150555.1163049-6-acme@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 13 Nov 2026 15:13:29 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Arnaldo Carvalho de Melo >=20 > At -O2 a struct pointer lives in a register and DWARF describes it with > a register location, while the unoptimized workloads the data type tests > profile keep their variables on the stack. >=20 > Build a workload with a noinline function that gets the pointer from a > volatile global, which keeps it in a register, and check that its three > member accesses are resolved from that location. >=20 > Signed-off-by: Arnaldo Carvalho de Melo Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261113150555.1163= 049-1-acme@kernel.org?part=3D5