From patchwork Fri Dec 12 17:45:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonas Gorski X-Patchwork-Id: 420612 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from arrakis.dune.hu (arrakis.dune.hu [78.24.191.176]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id C94DB14009B for ; Sat, 13 Dec 2014 04:45:40 +1100 (AEDT) Received: from arrakis.dune.hu (localhost [127.0.0.1]) by arrakis.dune.hu (Postfix) with ESMTP id 8DD7728C23F; Fri, 12 Dec 2014 18:43:47 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on arrakis.dune.hu X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=ALL_TRUSTED,BAYES_00, UPPERCASE_50_75 autolearn=unavailable version=3.3.2 Received: from localhost (localhost [127.0.0.1]) by arrakis.dune.hu (Postfix) with ESMTP id D595228C244 for ; Fri, 12 Dec 2014 18:43:41 +0100 (CET) X-Virus-Scanned: at arrakis.dune.hu Received: from mail-qa0-f47.google.com (mail-qa0-f47.google.com [209.85.216.47]) by arrakis.dune.hu (Postfix) with ESMTPSA id A93AD28C23F for ; Fri, 12 Dec 2014 18:43:40 +0100 (CET) Received: by mail-qa0-f47.google.com with SMTP id s7so5465859qap.34 for ; Fri, 12 Dec 2014 09:45:26 -0800 (PST) X-Received: by 10.229.50.135 with SMTP id z7mr32832548qcf.21.1418406326425; Fri, 12 Dec 2014 09:45:26 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.17.56 with HTTP; Fri, 12 Dec 2014 09:45:06 -0800 (PST) In-Reply-To: <1418400142-6918-5-git-send-email-maxime.ripard@free-electrons.com> References: <1418400142-6918-1-git-send-email-maxime.ripard@free-electrons.com> <1418400142-6918-5-git-send-email-maxime.ripard@free-electrons.com> From: Jonas Gorski Date: Fri, 12 Dec 2014 18:45:06 +0100 Message-ID: To: Maxime Ripard Cc: Thomas Petazzoni , OpenWrt Development List Subject: Re: [OpenWrt-Devel] [PATCH v4 4/4] kernel: 3.18: Strip off all the useless options X-BeenThere: openwrt-devel@lists.openwrt.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: OpenWrt Development List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: openwrt-devel-bounces@lists.openwrt.org Sender: "openwrt-devel" On Fri, Dec 12, 2014 at 5:02 PM, Maxime Ripard wrote: > Now that we use the defconfigs, we can remove all the options at their default > value. This causes a lot of kernel-config changes for e.g bcm63xx_smp with 3.18, several of which are unwanted (e.g. enabling of the FPU emulator). How did you determine which of these symbols were unneeded? Here a diff of the resulting .config with patches 1-3 applied (before), and with patch 4 in addition applied (after) --- config-3.18-before 2014-12-12 18:39:08.385702153 +0100 +++ config-3.18-after 2014-12-12 18:33:58.197708840 +0100 @@ -167,9 +167,9 @@ # CONFIG_PREEMPT is not set # CONFIG_KEXEC is not set # CONFIG_CRASH_DUMP is not set -# CONFIG_SECCOMP is not set +CONFIG_SECCOMP=y CONFIG_MIPS_O32_FP64_SUPPORT=y -# CONFIG_MIPS_FPU_EMULATOR is not set +CONFIG_MIPS_FPU_EMULATOR=y CONFIG_USE_OF=y CONFIG_BOOT_RAW=y CONFIG_LOCKDEP_SUPPORT=y @@ -262,7 +262,7 @@ # CONFIG_KALLSYMS_UNCOMPRESSED is not set CONFIG_BPF=y CONFIG_EXPERT=y -# CONFIG_SGETMASK_SYSCALL is not set +CONFIG_SGETMASK_SYSCALL=y # CONFIG_SYSFS_SYSCALL is not set # CONFIG_SYSCTL_SYSCALL is not set CONFIG_KALLSYMS=y @@ -276,7 +276,7 @@ CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y -CONFIG_BPF_SYSCALL=y +# CONFIG_BPF_SYSCALL is not set CONFIG_SHMEM=y # CONFIG_AIO is not set # CONFIG_ADVISE_SYSCALLS is not set @@ -311,6 +311,7 @@ CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y CONFIG_HAVE_ARCH_SECCOMP_FILTER=y +CONFIG_SECCOMP_FILTER=y CONFIG_HAVE_CC_STACKPROTECTOR=y # CONFIG_CC_STACKPROTECTOR is not set CONFIG_CC_STACKPROTECTOR_NONE=y @@ -406,7 +407,11 @@ # CONFIG_PCIEPORTBUS=y # CONFIG_PCIEAER is not set -# CONFIG_PCIEASPM is not set +CONFIG_PCIEASPM=y +# CONFIG_PCIEASPM_DEBUG is not set +CONFIG_PCIEASPM_DEFAULT=y +# CONFIG_PCIEASPM_POWERSAVE is not set +# CONFIG_PCIEASPM_PERFORMANCE is not set CONFIG_MMU=y # CONFIG_PCCARD is not set # CONFIG_HOTPLUG_PCI is not set @@ -418,7 +423,7 @@ # CONFIG_BINFMT_ELF=y CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y -# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y CONFIG_BINFMT_SCRIPT=y # CONFIG_HAVE_AOUT is not set # CONFIG_BINFMT_MISC is not set @@ -528,7 +533,7 @@ CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set CONFIG_NETFILTER_ADVANCED=y -# CONFIG_BRIDGE_NETFILTER is not set +CONFIG_BRIDGE_NETFILTER=y # # Core Netfilter Configuration @@ -636,6 +641,7 @@ CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m # CONFIG_NETFILTER_XT_MATCH_NFACCT is not set # CONFIG_NETFILTER_XT_MATCH_OWNER is not set +# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set # CONFIG_NETFILTER_XT_MATCH_PKTTYPE is not set # CONFIG_NETFILTER_XT_MATCH_QUOTA is not set # CONFIG_NETFILTER_XT_MATCH_RATEEST is not set @@ -657,7 +663,7 @@ # CONFIG_NF_DEFRAG_IPV4=m CONFIG_NF_CONNTRACK_IPV4=m -# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set +CONFIG_NF_CONNTRACK_PROC_COMPAT=y # CONFIG_NF_LOG_ARP is not set CONFIG_NF_LOG_IPV4=m CONFIG_NF_REJECT_IPV4=m @@ -966,7 +972,7 @@ # # CONFIG_MTD_LPDDR is not set CONFIG_MTD_SPI_NOR=y -# CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is not set +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y # CONFIG_MTD_UBI is not set CONFIG_DTC=y CONFIG_OF=y @@ -1201,7 +1207,9 @@ # CONFIG_FORCEDETH is not set CONFIG_NET_VENDOR_OKI=y # CONFIG_ETHOC is not set -# CONFIG_NET_PACKET_ENGINE is not set +CONFIG_NET_PACKET_ENGINE=y +# CONFIG_HAMACHI is not set +# CONFIG_YELLOWFIN is not set CONFIG_NET_VENDOR_QLOGIC=y # CONFIG_QLA3XXX is not set # CONFIG_QLCNIC is not set @@ -1304,9 +1312,9 @@ CONFIG_PPP=m # CONFIG_PPP_BSDCOMP is not set # CONFIG_PPP_DEFLATE is not set -CONFIG_PPP_FILTER=y +# CONFIG_PPP_FILTER is not set # CONFIG_PPP_MPPE is not set -CONFIG_PPP_MULTILINK=y +# CONFIG_PPP_MULTILINK is not set CONFIG_PPPOE=m CONFIG_PPP_ASYNC=m # CONFIG_PPP_SYNC_TTY is not set @@ -1345,7 +1353,10 @@ # # Userland interfaces # -# CONFIG_INPUT_MOUSEDEV is not set +CONFIG_INPUT_MOUSEDEV=m +CONFIG_INPUT_MOUSEDEV_PSAUX=y +CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 +CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768 # CONFIG_INPUT_JOYDEV is not set # CONFIG_INPUT_EVDEV is not set # CONFIG_INPUT_EVBUG is not set @@ -1354,7 +1365,7 @@ # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y -# CONFIG_KEYBOARD_ATKBD is not set +CONFIG_KEYBOARD_ATKBD=m # CONFIG_KEYBOARD_LKKBD is not set # CONFIG_KEYBOARD_GPIO is not set CONFIG_KEYBOARD_GPIO_POLLED=m @@ -1366,29 +1377,41 @@ # CONFIG_KEYBOARD_SUNKBD is not set # CONFIG_KEYBOARD_OMAP4 is not set # CONFIG_KEYBOARD_XTKBD is not set -# CONFIG_INPUT_MOUSE is not set +CONFIG_INPUT_MOUSE=y +CONFIG_MOUSE_PS2=m +CONFIG_MOUSE_PS2_ALPS=y +CONFIG_MOUSE_PS2_LOGIPS2PP=y +CONFIG_MOUSE_PS2_SYNAPTICS=y +CONFIG_MOUSE_PS2_CYPRESS=y +CONFIG_MOUSE_PS2_TRACKPOINT=y +# CONFIG_MOUSE_PS2_ELANTECH is not set +# CONFIG_MOUSE_PS2_SENTELIC is not set +# CONFIG_MOUSE_PS2_TOUCHKIT is not set +# CONFIG_MOUSE_SERIAL is not set +# CONFIG_MOUSE_APPLETOUCH is not set +# CONFIG_MOUSE_BCM5974 is not set +# CONFIG_MOUSE_VSXXXAA is not set +# CONFIG_MOUSE_GPIO is not set +# CONFIG_MOUSE_SYNAPTICS_USB is not set # CONFIG_INPUT_JOYSTICK is not set # CONFIG_INPUT_TABLET is not set # CONFIG_INPUT_TOUCHSCREEN is not set -CONFIG_INPUT_MISC=y -# CONFIG_INPUT_AD714X is not set -# CONFIG_INPUT_GPIO_BEEPER is not set -# CONFIG_INPUT_GPIO_TILT_POLLED is not set -# CONFIG_INPUT_ATI_REMOTE2 is not set -# CONFIG_INPUT_KEYSPAN_REMOTE is not set -# CONFIG_INPUT_POWERMATE is not set -# CONFIG_INPUT_YEALINK is not set -# CONFIG_INPUT_CM109 is not set -# CONFIG_INPUT_UINPUT is not set -# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set -# CONFIG_INPUT_ADXL34X is not set -# CONFIG_INPUT_CMA3000 is not set +# CONFIG_INPUT_MISC is not set # # Hardware I/O ports # -# CONFIG_SERIO is not set +CONFIG_SERIO=m CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y +CONFIG_SERIO_I8042=m +CONFIG_SERIO_SERPORT=m +# CONFIG_SERIO_PCIPS2 is not set +CONFIG_SERIO_LIBPS2=m +# CONFIG_SERIO_RAW is not set +# CONFIG_SERIO_ALTERA_PS2 is not set +# CONFIG_SERIO_PS2MULT is not set +# CONFIG_SERIO_ARC_PS2 is not set +# CONFIG_SERIO_APBPS2 is not set # CONFIG_GAMEPORT is not set # @@ -1636,7 +1659,8 @@ # # Graphics support # -# CONFIG_VGA_ARB is not set +CONFIG_VGA_ARB=y +CONFIG_VGA_ARB_MAX_GPUS=16 # # Direct Rendering Manager @@ -1942,7 +1966,7 @@ # Compile-time checks and compiler options # CONFIG_DEBUG_INFO=y -CONFIG_DEBUG_INFO_REDUCED=y +# CONFIG_DEBUG_INFO_REDUCED is not set # CONFIG_DEBUG_INFO_SPLIT is not set # CONFIG_DEBUG_INFO_DWARF4 is not set CONFIG_ENABLE_WARN_DEPRECATED=y @@ -2015,7 +2039,7 @@ # CONFIG_SPARSE_RCU_POINTER is not set # CONFIG_TORTURE_TEST is not set # CONFIG_RCU_TORTURE_TEST is not set -CONFIG_RCU_CPU_STALL_TIMEOUT=60 +CONFIG_RCU_CPU_STALL_TIMEOUT=21 # CONFIG_RCU_CPU_STALL_INFO is not set # CONFIG_RCU_TRACE is not set # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set