From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756717AbdDGVHg (ORCPT ); Fri, 7 Apr 2017 17:07:36 -0400 Received: from mx3.molgen.mpg.de ([141.14.17.11]:50574 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756106AbdDGVH1 (ORCPT ); Fri, 7 Apr 2017 17:07:27 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Fri, 07 Apr 2017 23:07:15 +0200 From: Paul Menzel To: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: `pci_apply_final_quirks()` taking half a second Organization: =?UTF-8?Q?Max-Planck-Institut_f=C3=BCr_molekulare_Genetik?= Message-ID: <44cada166e42007d27b4c3e3aa0744d7@molgen.mpg.de> User-Agent: Roundcube Webmail/1.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Linux folks, Measuring where time is spent during boot with `systemd-bootchart` on an Asus A780FullHD, it turns out that half a second is spent in `pci_apply_final_quirks()`. Here are the times copied from the SVG: init_ladder 0.012s init_menu 0.012s pm_sysrq_init 0.012s acpi_init 0.027s pci_subsys_init 0.008s hpet_late_init 0.004s tracer_init_tracefs 0.002s event_trace_init 0.008s pnpacpi_init 0.002s chr_dev_init 0.003s init_acpi_pm_clocksource 0.004s pci_apply_final_quirks 0.452s populate_rootfs 0.400s pci_iommu_init 0.003s rsa_init 0.058s serial8250_init 0.020s i8042_init 0.003s load_system_certificate_list 0.002s ata_init 0.007s ehci_pci_init 0.030s ohci_pci_init 0.312s ahci_pci_driver_init 0.342s atiixp_pci_driver_init 0.337s hid_init 0.004s init_sr 0.031s I don’t know what information you need, so I just include the Linux Kernel version, and the output of `lspci -nn`. ``` $ more /proc/version Linux version 4.9.0-0.bpo.2-amd64 (debian-kernel@lists.debian.org) (gcc version 4.9.2 (Debian 4.9.2-10) ) #1 SMP Debian 4.9.13-1~bpo8+1 (201 7-02-27) $ lspci -nn 00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] RS780 Host Bridge [1022:9600] 00:01.0 PCI bridge [0604]: ASRock Incorporation Device [1849:9602] 00:09.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 4) [1022:9608] 00:0a.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 5) [1022:9609] 00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] [1002:4391] 00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] 00:12.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398] 00:12.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] 00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] 00:13.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398] 00:13.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller [1002:4385] (rev 3a) 00:14.1 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller [1002:439c] 00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) [1002:4383] 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller [1002:439d] 00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge [1002:4384] 00:14.5 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller [1002:4399] 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration [1022:1100] 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map [1022:1101] 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller [1022:1102] 00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control [1022:1103] 01:05.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RS780 [Radeon HD 3200] [1002:9610] 04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 02) ``` It’d be great, if the times could be reduced, so that the time from GRUB to entering the LUKS passphrase gets smaller. Kind regards, Paul