On 12/15/2016 10:12 AM, Alexey Brodkin wrote: > Stand-alone nSIM platform has the only peripheral which is serial port. > That means support of networking and mice makes no sense for it. > > Moreover removal of networking alone gives us 2 nice benefits: > 1. Build happens faster > On my machine I'm seeing this: > Existing defconfig: > real 2m37.887s > user 8m22.077s > sys 0m35.995s > > New defconfig: > real 1m35.351s > user 5m11.988s > sys 0m25.211s > > Which gives us ~60% speed-up. > > 2. Memory footprint is smaller: > arc-linux-size vmlinux.org > text data bss dec hex filename > 5829381 798756 257280 6885417 691029 vmlinux.org > > arc-linux-size vmlinux.new > text data bss dec hex filename > 4426769 526348 225244 5178361 4f03f9 vmlinux.new > > Though this has one down-side - UNIX sockets are disabled an so on > attempt to run hackbench by default user will see: > --------------------->8------------------- > hackbench > Running in process mode with 10 groups using 40 file descriptors each > (== 400 tasks) > Each sender will pass 100 messages of 100 bytes > Creating fdpair (error: Function not implemented) > --------------------->8------------------- > > Still it's possible to ask hackbench to use pipes instead like this: > --------------------->8------------------- > hackbench -p > Running in process mode with 10 groups using 40 file descriptors each > (== 400 tasks) > Each sender will pass 100 messages of 100 bytes > Time: 9.216 > --------------------->8------------------- Sorry this part is a no go ! -Vineet > > Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> > --- > arch/arc/configs/nsim_700_defconfig | 16 +--------------- > arch/arc/configs/nsim_hs_defconfig | 13 +------------ > arch/arc/configs/nsim_hs_smp_defconfig | 12 +----------- > 3 files changed, 3 insertions(+), 38 deletions(-) > > diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig > index b0066a749d4c..80bd8faecb95 100644 > --- a/arch/arc/configs/nsim_700_defconfig > +++ b/arch/arc/configs/nsim_700_defconfig > @@ -2,7 +2,6 @@ > CONFIG_DEFAULT_HOSTNAME="ARCLinux" > # CONFIG_SWAP is not set > CONFIG_SYSVIPC=y > -CONFIG_POSIX_MQUEUE=y > # CONFIG_CROSS_MEMORY_ATTACH is not set > CONFIG_HIGH_RES_TIMERS=y > CONFIG_IKCONFIG=y > @@ -27,22 +26,12 @@ CONFIG_ARC_PLAT_SIM=y > CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700" > CONFIG_PREEMPT=y > # CONFIG_COMPACTION is not set > -CONFIG_NET=y > -CONFIG_PACKET=y > -CONFIG_UNIX=y > -CONFIG_UNIX_DIAG=y > -CONFIG_NET_KEY=y > -CONFIG_INET=y > -# CONFIG_IPV6 is not set > CONFIG_DEVTMPFS=y > # CONFIG_STANDALONE is not set > # CONFIG_PREVENT_FIRMWARE_BUILD is not set > # CONFIG_FIRMWARE_IN_KERNEL is not set > # CONFIG_BLK_DEV is not set > -CONFIG_NETDEVICES=y > -CONFIG_ARC_EMAC=y > -CONFIG_LXT_PHY=y > -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set > +# CONFIG_INPUT_MOUSEDEV is not set > # CONFIG_INPUT_KEYBOARD is not set > # CONFIG_INPUT_MOUSE is not set > # CONFIG_SERIO is not set > @@ -55,11 +44,8 @@ CONFIG_SERIAL_ARC_CONSOLE=y > # CONFIG_HID is not set > # CONFIG_USB_SUPPORT is not set > # CONFIG_IOMMU_SUPPORT is not set > -CONFIG_EXT2_FS=y > -CONFIG_EXT2_FS_XATTR=y > CONFIG_TMPFS=y > # CONFIG_MISC_FILESYSTEMS is not set > -CONFIG_NFS_FS=y > # CONFIG_ENABLE_WARN_DEPRECATED is not set > # CONFIG_ENABLE_MUST_CHECK is not set > # CONFIG_DEBUG_PREEMPT is not set > diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig > index ebe9ebb92933..ad8e7e53ab26 100644 > --- a/arch/arc/configs/nsim_hs_defconfig > +++ b/arch/arc/configs/nsim_hs_defconfig > @@ -2,7 +2,6 @@ > CONFIG_DEFAULT_HOSTNAME="ARCLinux" > # CONFIG_SWAP is not set > CONFIG_SYSVIPC=y > -CONFIG_POSIX_MQUEUE=y > # CONFIG_CROSS_MEMORY_ATTACH is not set > CONFIG_HIGH_RES_TIMERS=y > CONFIG_IKCONFIG=y > @@ -31,19 +30,12 @@ CONFIG_ISA_ARCV2=y > CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs" > CONFIG_PREEMPT=y > # CONFIG_COMPACTION is not set > -CONFIG_NET=y > -CONFIG_PACKET=y > -CONFIG_UNIX=y > -CONFIG_UNIX_DIAG=y > -CONFIG_NET_KEY=y > -CONFIG_INET=y > -# CONFIG_IPV6 is not set > CONFIG_DEVTMPFS=y > # CONFIG_STANDALONE is not set > # CONFIG_PREVENT_FIRMWARE_BUILD is not set > # CONFIG_FIRMWARE_IN_KERNEL is not set > # CONFIG_BLK_DEV is not set > -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set > +# CONFIG_INPUT_MOUSEDEV is not set > # CONFIG_INPUT_KEYBOARD is not set > # CONFIG_INPUT_MOUSE is not set > # CONFIG_SERIO is not set > @@ -56,11 +48,8 @@ CONFIG_SERIAL_ARC_CONSOLE=y > # CONFIG_HID is not set > # CONFIG_USB_SUPPORT is not set > # CONFIG_IOMMU_SUPPORT is not set > -CONFIG_EXT2_FS=y > -CONFIG_EXT2_FS_XATTR=y > CONFIG_TMPFS=y > # CONFIG_MISC_FILESYSTEMS is not set > -CONFIG_NFS_FS=y > # CONFIG_ENABLE_WARN_DEPRECATED is not set > # CONFIG_ENABLE_MUST_CHECK is not set > # CONFIG_DEBUG_PREEMPT is not set > diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig > index 4bde43278be6..d0e609e26bfb 100644 > --- a/arch/arc/configs/nsim_hs_smp_defconfig > +++ b/arch/arc/configs/nsim_hs_smp_defconfig > @@ -30,19 +30,12 @@ CONFIG_SMP=y > CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu" > CONFIG_PREEMPT=y > # CONFIG_COMPACTION is not set > -CONFIG_NET=y > -CONFIG_PACKET=y > -CONFIG_UNIX=y > -CONFIG_UNIX_DIAG=y > -CONFIG_NET_KEY=y > -CONFIG_INET=y > -# CONFIG_IPV6 is not set > CONFIG_DEVTMPFS=y > # CONFIG_STANDALONE is not set > # CONFIG_PREVENT_FIRMWARE_BUILD is not set > # CONFIG_FIRMWARE_IN_KERNEL is not set > # CONFIG_BLK_DEV is not set > -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set > +# CONFIG_INPUT_MOUSEDEV is not set > # CONFIG_INPUT_KEYBOARD is not set > # CONFIG_INPUT_MOUSE is not set > # CONFIG_SERIO is not set > @@ -55,10 +48,7 @@ CONFIG_SERIAL_ARC_CONSOLE=y > # CONFIG_HID is not set > # CONFIG_USB_SUPPORT is not set > # CONFIG_IOMMU_SUPPORT is not set > -CONFIG_EXT2_FS=y > -CONFIG_EXT2_FS_XATTR=y > CONFIG_TMPFS=y > # CONFIG_MISC_FILESYSTEMS is not set > -CONFIG_NFS_FS=y > # CONFIG_ENABLE_WARN_DEPRECATED is not set > # CONFIG_ENABLE_MUST_CHECK is not set >
