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* Intermittent early panic in try_to_wake_up
@ 2009-10-22 23:33 Kevin Winchester
  2009-10-23  9:23 ` Mike Galbraith
  0 siblings, 1 reply; 12+ messages in thread
From: Kevin Winchester @ 2009-10-22 23:33 UTC (permalink / raw)
  To: Ingo Molnar, Peter Zijlstra, Mike Galbraith; +Cc: LKML


Hi,

A week or two ago I saw a panic on boot in try_to_wake_up, but it was not
reproducible and I had not written down any trace information.  This
evening I saw it twice more, but then on the third boot things worked fine.
This time I copied down the stack trace:

try_to_wake_up+0x2e/0x102
wake_up_process+0x10/0x12
kthread_create+0x88/0x12c
?ksoftirqd+0x00/0xb7
cpu_callback+0x42/0x8f
?spawn_ksoftirqd+0x0/0x39
spawn_ksoftirqd+0x17/0x39
do_one_initcall+0x58/0x147

The first time it happened, I remember checking the git logs and it was
shortly after:

commit f5dc37530ba8a35aae0f7f4f13781d1904f71e94
Author: Mike Galbraith <efault@gmx.de>
Date:   Fri Oct 9 08:35:03 2009 +0200

    sched: Update the clock of runqueue select_task_rq() selected
    
    In try_to_wake_up(), we update the runqueue clock, but
    select_task_rq() may select a different runqueue than the one we
    updated, leaving the new runqueue's clock stale for a bit.
    
    This patch cures occasional huge latencies reported by latencytop
    when coming out of idle on a mostly idle NO_HZ box.
    
    Signed-off-by: Mike Galbraith <efault@gmx.de>
    Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    LKML-Reference: <1255070103.7639.30.camel@marge.simson.net>
    Signed-off-by: Ingo Molnar <mingo@elte.hu>


...so perhaps that has something to do with it.

Config below.  Any help would be appreciated.

-- 
Kevin Winchester


#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.32-rc4
# Thu Oct 15 19:50:54 2009
#
CONFIG_64BIT=y
# CONFIG_X86_32 is not set
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ZONE_DMA32=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_X86_TRAMPOLINE=y
# CONFIG_KTIME_SCALAR is not set
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
# CONFIG_AUDIT is not set

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_TREE_PREEMPT_RCU is not set
# CONFIG_RCU_TRACE is not set
CONFIG_RCU_FANOUT=64
# CONFIG_RCU_FANOUT_EXACT is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
# CONFIG_GROUP_SCHED is not set
# CONFIG_CGROUPS is not set
# CONFIG_SYSFS_DEPRECATED_V2 is not set
# CONFIG_RELAY is not set
# CONFIG_NAMESPACES is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_EMBEDDED=y
# CONFIG_UID16 is not set
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
# CONFIG_ELF_CORE is not set
# CONFIG_PCSPKR_PLATFORM is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
# CONFIG_AIO is not set
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_PERF_COUNTERS is not set
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
# CONFIG_VM_EVENT_COUNTERS is not set
CONFIG_PCI_QUIRKS=y
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_API_DEBUG=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
# CONFIG_SLOW_WORK is not set
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_INTEGRITY is not set
CONFIG_BLOCK_COMPAT=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_AS is not set
# CONFIG_IOSCHED_DEADLINE is not set
CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_SMP is not set
# CONFIG_SPARSE_IRQ is not set
# CONFIG_X86_MPPARSE is not set
# CONFIG_X86_EXTENDED_PLATFORM is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_PARAVIRT_GUEST is not set
# CONFIG_MEMTEST is not set
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
CONFIG_MK8=y
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_CPU=y
CONFIG_X86_L1_CACHE_BYTES=64
CONFIG_X86_INTERNODE_CACHE_BYTES=64
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_PROCESSOR_SELECT=y
# CONFIG_CPU_SUP_INTEL is not set
CONFIG_CPU_SUP_AMD=y
# CONFIG_CPU_SUP_CENTAUR is not set
# CONFIG_X86_DS is not set
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
CONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not set
# CONFIG_AMD_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
# CONFIG_IOMMU_API is not set
CONFIG_NR_CPUS=1
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
# CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
CONFIG_X86_MCE=y
# CONFIG_X86_MCE_INTEL is not set
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
# CONFIG_I8K is not set
CONFIG_MICROCODE=y
# CONFIG_MICROCODE_INTEL is not set
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
# CONFIG_X86_CPU_DEBUG is not set
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_DIRECT_GBPAGES=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
# CONFIG_DISCONTIGMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_HAVE_MLOCK=y
CONFIG_HAVE_MLOCKED_PAGE_BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_MEMORY_FAILURE is not set
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_X86_RESERVE_LOW_64K=y
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
# CONFIG_EFI is not set
# CONFIG_SECCOMP is not set
# CONFIG_CC_STACKPROTECTOR is not set
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x200000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x1000000
# CONFIG_COMPAT_VDSO is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_HIBERNATION is not set
CONFIG_PM_RUNTIME=y
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS is not set
# CONFIG_ACPI_PROCFS_POWER is not set
# CONFIG_ACPI_POWER_METER is not set
CONFIG_ACPI_SYSFS_POWER=y
# CONFIG_ACPI_PROC_EVENT is not set
# CONFIG_ACPI_AC is not set
# CONFIG_ACPI_BATTERY is not set
# CONFIG_ACPI_BUTTON is not set
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
# CONFIG_ACPI_CONTAINER is not set
# CONFIG_ACPI_SBS is not set
# CONFIG_SFI is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# Memory power savings
#
# CONFIG_I7300_IDLE is not set

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_ARCH_SUPPORTS_MSI=y
# CONFIG_PCI_MSI is not set
# CONFIG_PCI_LEGACY is not set
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_HT_IRQ=y
# CONFIG_PCI_IOV is not set
CONFIG_ISA_DMA_API=y
CONFIG_K8_NB=y
# CONFIG_PCCARD is not set
# CONFIG_HOTPLUG_PCI is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=y
CONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_WIRELESS is not set
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
CONFIG_CDROM_PKTCDVD=y
CONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_CHR_DEV_SG=y
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
CONFIG_SCSI_SCAN_ASYNC=y

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
# CONFIG_SATA_PMP is not set
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
# CONFIG_ATA_PIIX is not set
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_PATA_ACPI is not set
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_RZ1000 is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
CONFIG_PATA_VIA=y
# CONFIG_PATA_WINBOND is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_SCH is not set
# CONFIG_MD is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#

#
# You can enable one or both FireWire driver stacks.
#

#
# See the help texts for more information.
#
# CONFIG_FIREWIRE is not set
# CONFIG_IEEE1394 is not set
# CONFIG_I2O is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_NET_ETHERNET is not set
CONFIG_MII=y
CONFIG_NETDEV_1000=y
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
# CONFIG_E1000 is not set
# CONFIG_E1000E is not set
# CONFIG_IP1000 is not set
# CONFIG_IGB is not set
# CONFIG_IGBVF is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_R8169=y
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
# CONFIG_VIA_VELOCITY is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2 is not set
# CONFIG_CNIC is not set
# CONFIG_QLA3XXX is not set
# CONFIG_ATL1 is not set
# CONFIG_ATL1E is not set
# CONFIG_ATL1C is not set
# CONFIG_JME is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_TR is not set
# CONFIG_WLAN is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
CONFIG_PPP=y
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_BSDCOMP=y
CONFIG_PPP_MPPE=y
# CONFIG_PPPOE is not set
CONFIG_PPPOL2TP=y
# CONFIG_SLIP is not set
CONFIG_SLHC=y
# CONFIG_NET_FC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_VMXNET3 is not set
# CONFIG_ISDN is not set
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_DEVKMEM is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set
CONFIG_FIX_EARLYCON_MEM=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_NVRAM is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
# CONFIG_HPET_MMAP is not set
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
CONFIG_I2C_VIAPRO=y

#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_SIMTEC is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Graphics adapter I2C/DDC channel drivers
#
# CONFIG_I2C_VOODOO3 is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_PCA_PLATFORM is not set

#
# Miscellaneous I2C Chip support
#
# CONFIG_DS1682 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
# CONFIG_SPI is not set

#
# PPS support
#
# CONFIG_PPS is not set
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_BQ27x00 is not set
# CONFIG_BATTERY_MAX17040 is not set
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7473 is not set
# CONFIG_SENSORS_ADT7475 is not set
CONFIG_SENSORS_K8TEMP=y
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_I5K_AMB is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
CONFIG_SENSORS_W83627HF=y
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_SENSORS_HDAPS is not set
# CONFIG_SENSORS_APPLESMC is not set

#
# ACPI drivers
#
# CONFIG_SENSORS_ATK0110 is not set
# CONFIG_SENSORS_LIS3LV02D is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
# CONFIG_SC520_WDT is not set
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
# CONFIG_60XX_WDT is not set
# CONFIG_SBC8360_WDT is not set
# CONFIG_CPU5_WDT is not set
# CONFIG_SMSC_SCH311X_WDT is not set
# CONFIG_SMSC37B787_WDT is not set
CONFIG_W83627HF_WDT=y
# CONFIG_W83697HF_WDT is not set
# CONFIG_W83697UG_WDT is not set
# CONFIG_W83877F_WDT is not set
# CONFIG_W83977F_WDT is not set
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set

#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_AB3100_CORE is not set
# CONFIG_REGULATOR is not set
# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
# CONFIG_AGP_INTEL is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_VGA_ARB is not set
CONFIG_DRM=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_TTM=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
CONFIG_DRM_RADEON=y
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_VESA is not set
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_GEODE is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_LOGO is not set
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_RAWMIDI=y
CONFIG_SND_SEQUENCER=y
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
# CONFIG_SND_PCM_OSS_PLUGINS is not set
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=y
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
# CONFIG_SND_DYNAMIC_MINORS is not set
# CONFIG_SND_SUPPORT_OLD_API is not set
# CONFIG_SND_VERBOSE_PROCFS is not set
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=y
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
CONFIG_SND_MPU401_UART=y
CONFIG_SND_AC97_CODEC=y
CONFIG_SND_DRIVERS=y
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=5
CONFIG_SND_PCI=y
# CONFIG_SND_AD1889 is not set
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_OXYGEN is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CS5530 is not set
# CONFIG_SND_CTXFI is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_INDIGOIOX is not set
# CONFIG_SND_INDIGODJX is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
# CONFIG_SND_HDA_INTEL is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_HIFIER is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_LX6464ES is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
CONFIG_SND_VIA82XX=y
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VIRTUOSO is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
# CONFIG_SND_USB is not set
# CONFIG_SND_SOC is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=y
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=y
# CONFIG_HID_PID is not set
# CONFIG_USB_HIDDEV is not set

#
# Special HID drivers
#
# CONFIG_HID_A4TECH is not set
# CONFIG_HID_APPLE is not set
# CONFIG_HID_BELKIN is not set
# CONFIG_HID_CHERRY is not set
# CONFIG_HID_CHICONY is not set
# CONFIG_HID_CYPRESS is not set
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EZKEY is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_TWINHAN is not set
# CONFIG_HID_KENSINGTON is not set
# CONFIG_HID_LOGITECH is not set
# CONFIG_HID_MICROSOFT is not set
# CONFIG_HID_MONTEREY is not set
# CONFIG_HID_NTRIG is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_SAMSUNG is not set
# CONFIG_HID_SONY is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_THRUSTMASTER is not set
# CONFIG_HID_ZEROPLUS is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set

#
# Miscellaneous USB options
#
# CONFIG_USB_DEVICEFS is not set
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
CONFIG_USB_SUSPEND=y
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_MON is not set
# CONFIG_USB_WUSB is not set
# CONFIG_USB_WUSB_CBAF is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
# CONFIG_USB_XHCI_HCD is not set
CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1760_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_OHCI_HCD is not set
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not set
# CONFIG_USB_HWA_HCD is not set

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
CONFIG_USB_STORAGE_ONETOUCH=y
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_VST is not set
# CONFIG_USB_GADGET is not set

#
# OTG and related infrastructure
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_UWB is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
# CONFIG_RTC_INTF_SYSFS is not set
# CONFIG_RTC_INTF_PROC is not set
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set

#
# SPI RTC drivers
#

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set

#
# TI VLYNQ
#
CONFIG_STAGING=y
# CONFIG_STAGING_EXCLUDE_BUILD is not set
# CONFIG_ET131X is not set
# CONFIG_SLICOSS is not set
# CONFIG_USB_IP_COMMON is not set
# CONFIG_ECHO is not set
# CONFIG_ASUS_OLED is not set
# CONFIG_ALTERA_PCIE_CHDMA is not set
# CONFIG_INPUT_MIMIO is not set
# CONFIG_TRANZPORT is not set

#
# Android
#
# CONFIG_ANDROID is not set

#
# Qualcomm MSM Camera And Video
#

#
# Camera Sensor Selection
#
# CONFIG_INPUT_GPIO is not set
# CONFIG_DST is not set
# CONFIG_POHMELFS is not set
# CONFIG_B3DFG is not set
# CONFIG_IDE_PHISON is not set
# CONFIG_PLAN9AUTH is not set
# CONFIG_LINE6_USB is not set
CONFIG_DRM_RADEON_KMS=y
# CONFIG_FB_UDL is not set
# CONFIG_VME_BUS is not set

#
# RAR Register Driver
#
# CONFIG_RAR_REGISTER is not set
# CONFIG_IIO is not set
# CONFIG_X86_PLATFORM_DEVICES is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
# CONFIG_FIRMWARE_MEMMAP is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
# CONFIG_DMIID is not set
# CONFIG_ISCSI_IBFT_FIND is not set

#
# File systems
#
CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
# CONFIG_EXT3_FS_XATTR is not set
CONFIG_EXT4_FS=y
# CONFIG_EXT4_FS_XATTR is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
CONFIG_GENERIC_ACL=y

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
# CONFIG_ZISOFS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
# CONFIG_MSDOS_FS is not set
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
CONFIG_NTFS_FS=y
# CONFIG_NTFS_DEBUG is not set
# CONFIG_NTFS_RW is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
# CONFIG_PROC_PAGE_MONITOR is not set
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS is not set
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
CONFIG_NLS_ISO8859_15=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_WARN_DEPRECATED=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=2048
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
# CONFIG_DETECT_SOFTLOCKUP is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_SCHED_DEBUG is not set
# CONFIG_SCHEDSTATS is not set
CONFIG_TIMER_STATS=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VIRTUAL is not set
# CONFIG_DEBUG_WRITECOUNT is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_X86_VERBOSE_BOOTUP is not set
# CONFIG_EARLY_PRINTK is not set
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_IOMMU_DEBUG is not set
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
# CONFIG_IMA is not set
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=y
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32C_INTEL is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
CONFIG_CRYPTO_SHA1=y
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
# CONFIG_CRYPTO_AES is not set
# CONFIG_CRYPTO_AES_X86_64 is not set
# CONFIG_CRYPTO_AES_NI_INTEL is not set
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SALSA20_X86_64 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set

#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_ZLIB is not set
# CONFIG_CRYPTO_LZO is not set

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
# CONFIG_BINARY_PRINTF is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_NLATTR=y

^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-10-22 23:33 Intermittent early panic in try_to_wake_up Kevin Winchester
@ 2009-10-23  9:23 ` Mike Galbraith
  2009-11-05 23:44   ` Kevin Winchester
  0 siblings, 1 reply; 12+ messages in thread
From: Mike Galbraith @ 2009-10-23  9:23 UTC (permalink / raw)
  To: Kevin Winchester; +Cc: Ingo Molnar, Peter Zijlstra, LKML

On Thu, 2009-10-22 at 20:33 -0300, Kevin Winchester wrote:
> Hi,
> 
> A week or two ago I saw a panic on boot in try_to_wake_up, but it was not
> reproducible and I had not written down any trace information.  This
> evening I saw it twice more, but then on the third boot things worked fine.
> This time I copied down the stack trace:
> 
> try_to_wake_up+0x2e/0x102
> wake_up_process+0x10/0x12
> kthread_create+0x88/0x12c
> ?ksoftirqd+0x00/0xb7
> cpu_callback+0x42/0x8f
> ?spawn_ksoftirqd+0x0/0x39
> spawn_ksoftirqd+0x17/0x39
> do_one_initcall+0x58/0x147
> 
> The first time it happened, I remember checking the git logs and it was
> shortly after:
> 
> commit f5dc37530ba8a35aae0f7f4f13781d1904f71e94
> Author: Mike Galbraith <efault@gmx.de>
> Date:   Fri Oct 9 08:35:03 2009 +0200
> 
>     sched: Update the clock of runqueue select_task_rq() selected
>     
>     In try_to_wake_up(), we update the runqueue clock, but
>     select_task_rq() may select a different runqueue than the one we
>     updated, leaving the new runqueue's clock stale for a bit.
>     
>     This patch cures occasional huge latencies reported by latencytop
>     when coming out of idle on a mostly idle NO_HZ box.
>     
>     Signed-off-by: Mike Galbraith <efault@gmx.de>
>     Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
>     LKML-Reference: <1255070103.7639.30.camel@marge.simson.net>
>     Signed-off-by: Ingo Molnar <mingo@elte.hu>
> 
> 
> ...so perhaps that has something to do with it.

I don't think that's very likely.  Box did explode near my grubby
fingerprints though.

> Config below.  Any help would be appreciated.

Building with your config, try_to_wake_up+0x2e is around..

(gdb) list *try_to_wake_up+0x2e
0xffffffff81029107 is in try_to_wake_up (kernel/sched.c:2324).
2319            this_cpu = get_cpu();
2320
2321            smp_wmb();
2322            rq = orig_rq = task_rq_lock(p, &flags);
2323            update_rq_clock(rq);
2324            if (!(p->state & state))
2325                    goto out;
2326
2327            if (p->se.on_rq)
2328                    goto out_running;

I don't see how any of that can explode without something very bad
having happened to ksoftirqd before we tried to wake it.

	-Mike


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-10-23  9:23 ` Mike Galbraith
@ 2009-11-05 23:44   ` Kevin Winchester
  2009-11-06  5:34     ` Mike Galbraith
  0 siblings, 1 reply; 12+ messages in thread
From: Kevin Winchester @ 2009-11-05 23:44 UTC (permalink / raw)
  To: Mike Galbraith
  Cc: Ingo Molnar, Peter Zijlstra, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

Mike Galbraith wrote:
> On Thu, 2009-10-22 at 20:33 -0300, Kevin Winchester wrote:
>> Hi,
>>
>> A week or two ago I saw a panic on boot in try_to_wake_up, but it was not
>> reproducible and I had not written down any trace information.  This
>> evening I saw it twice more, but then on the third boot things worked fine.
>> This time I copied down the stack trace:
>>
>> try_to_wake_up+0x2e/0x102
>> wake_up_process+0x10/0x12
>> kthread_create+0x88/0x12c
>> ?ksoftirqd+0x00/0xb7
>> cpu_callback+0x42/0x8f
>> ?spawn_ksoftirqd+0x0/0x39
>> spawn_ksoftirqd+0x17/0x39
>> do_one_initcall+0x58/0x147
>>
>> The first time it happened, I remember checking the git logs and it was
>> shortly after:
>>
>> commit f5dc37530ba8a35aae0f7f4f13781d1904f71e94
>> Author: Mike Galbraith <efault@gmx.de>
>> Date:   Fri Oct 9 08:35:03 2009 +0200
>>
>>     sched: Update the clock of runqueue select_task_rq() selected
>>     
>>     In try_to_wake_up(), we update the runqueue clock, but
>>     select_task_rq() may select a different runqueue than the one we
>>     updated, leaving the new runqueue's clock stale for a bit.
>>     
>>     This patch cures occasional huge latencies reported by latencytop
>>     when coming out of idle on a mostly idle NO_HZ box.
>>     
>>     Signed-off-by: Mike Galbraith <efault@gmx.de>
>>     Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
>>     LKML-Reference: <1255070103.7639.30.camel@marge.simson.net>
>>     Signed-off-by: Ingo Molnar <mingo@elte.hu>
>>
>>
>> ...so perhaps that has something to do with it.
> 
> I don't think that's very likely.  Box did explode near my grubby
> fingerprints though.
> 
>> Config below.  Any help would be appreciated.
> 
> Building with your config, try_to_wake_up+0x2e is around..
> 
> (gdb) list *try_to_wake_up+0x2e
> 0xffffffff81029107 is in try_to_wake_up (kernel/sched.c:2324).
> 2319            this_cpu = get_cpu();
> 2320
> 2321            smp_wmb();
> 2322            rq = orig_rq = task_rq_lock(p, &flags);
> 2323            update_rq_clock(rq);
> 2324            if (!(p->state & state))
> 2325                    goto out;
> 2326
> 2327            if (p->se.on_rq)
> 2328                    goto out_running;
> 
> I don't see how any of that can explode without something very bad
> having happened to ksoftirqd before we tried to wake it.
> 

I thought this problem had solved itself, but I've hit it again three times
in the last few days.

I've expanded the CC list a little (based on get_maintainer for
kernel/softirq.c, since that seems to be involved somehow, and Rafael since
this definitely seems to be a regression), to see if anyone else has any
ideas.

-- 
Kevin Winchester


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-05 23:44   ` Kevin Winchester
@ 2009-11-06  5:34     ` Mike Galbraith
  2009-11-06 23:49       ` Kevin Winchester
  0 siblings, 1 reply; 12+ messages in thread
From: Mike Galbraith @ 2009-11-06  5:34 UTC (permalink / raw)
  To: Kevin Winchester
  Cc: Ingo Molnar, Peter Zijlstra, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

Hi Kevin,

On Thu, 2009-11-05 at 19:44 -0400, Kevin Winchester wrote:
> Mike Galbraith wrote:
> > On Thu, 2009-10-22 at 20:33 -0300, Kevin Winchester wrote:
> >> Hi,
> >>
> >> A week or two ago I saw a panic on boot in try_to_wake_up, but it was not
> >> reproducible and I had not written down any trace information.  This
> >> evening I saw it twice more, but then on the third boot things worked fine.
> >> This time I copied down the stack trace:
> >>
> >> try_to_wake_up+0x2e/0x102
> >> wake_up_process+0x10/0x12
> >> kthread_create+0x88/0x12c
> >> ?ksoftirqd+0x00/0xb7
> >> cpu_callback+0x42/0x8f
> >> ?spawn_ksoftirqd+0x0/0x39
> >> spawn_ksoftirqd+0x17/0x39
> >> do_one_initcall+0x58/0x147
> >>
> >> The first time it happened, I remember checking the git logs and it was
> >> shortly after:
> >>
> >> commit f5dc37530ba8a35aae0f7f4f13781d1904f71e94
> >> Author: Mike Galbraith <efault@gmx.de>
> >> Date:   Fri Oct 9 08:35:03 2009 +0200
> >>
> >>     sched: Update the clock of runqueue select_task_rq() selected
> >>     
> >>     In try_to_wake_up(), we update the runqueue clock, but
> >>     select_task_rq() may select a different runqueue than the one we
> >>     updated, leaving the new runqueue's clock stale for a bit.
> >>     
> >>     This patch cures occasional huge latencies reported by latencytop
> >>     when coming out of idle on a mostly idle NO_HZ box.
> >>     
> >>     Signed-off-by: Mike Galbraith <efault@gmx.de>
> >>     Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> >>     LKML-Reference: <1255070103.7639.30.camel@marge.simson.net>
> >>     Signed-off-by: Ingo Molnar <mingo@elte.hu>
> >>
> >>
> >> ...so perhaps that has something to do with it.
> > 
> > I don't think that's very likely.  Box did explode near my grubby
> > fingerprints though.
> > 
> >> Config below.  Any help would be appreciated.
> > 
> > Building with your config, try_to_wake_up+0x2e is around..
> > 
> > (gdb) list *try_to_wake_up+0x2e
> > 0xffffffff81029107 is in try_to_wake_up (kernel/sched.c:2324).
> > 2319            this_cpu = get_cpu();
> > 2320
> > 2321            smp_wmb();
> > 2322            rq = orig_rq = task_rq_lock(p, &flags);
> > 2323            update_rq_clock(rq);
> > 2324            if (!(p->state & state))
> > 2325                    goto out;
> > 2326
> > 2327            if (p->se.on_rq)
> > 2328                    goto out_running;
> > 
> > I don't see how any of that can explode without something very bad
> > having happened to ksoftirqd before we tried to wake it.
> > 
> 
> I thought this problem had solved itself, but I've hit it again three times
> in the last few days.
> 
> I've expanded the CC list a little (based on get_maintainer for
> kernel/softirq.c, since that seems to be involved somehow, and Rafael since
> this definitely seems to be a regression), to see if anyone else has any
> ideas.

I may have found the bad thing that could have happened to ksoftirqd.

If you feel like testing, try the below.  We were altering the task
struct outside of locks, which is not interrupt etc safe.  It cures a
problem I ran into, and will hopefully cure yours as well.


sched: fix runqueue locking buglet.

Calling set_task_cpu() with the runqueue unlocked is unsafe.  Add cpu_rq_lock()
locking primitive, and lock the runqueue.  Also, update rq->clock before calling
set_task_cpu(), as it could be stale.

Running netperf UDP_STREAM with two pinned tasks with tip 1b9508f applied emitted
the thoroughly unbelievable result that ratelimiting newidle could produce twice
the throughput of the virgin kernel.  Reverting to locking the runqueue prior to
runqueue selection restored benchmarking sanity, as did this patchlet.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>

---
 kernel/sched.c |   32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

Index: linux-2.6.32.git/kernel/sched.c
===================================================================
--- linux-2.6.32.git.orig/kernel/sched.c
+++ linux-2.6.32.git/kernel/sched.c
@@ -1011,6 +1011,24 @@ static struct rq *this_rq_lock(void)
 	return rq;
 }
 
+/*
+ * cpu_rq_lock - lock the runqueue a given cpu and disable interrupts.
+ */
+static struct rq *cpu_rq_lock(int cpu, unsigned long *flags)
+	__acquires(rq->lock)
+{
+	struct rq *rq = cpu_rq(cpu);
+
+	spin_lock_irqsave(&rq->lock, *flags);
+	return rq;
+}
+
+static inline void cpu_rq_unlock(struct rq *rq, unsigned long *flags)
+	__releases(rq->lock)
+{
+	spin_unlock_irqrestore(&rq->lock, *flags);
+}
+
 #ifdef CONFIG_SCHED_HRTICK
 /*
  * Use HR-timers to deliver accurate preemption points.
@@ -2342,16 +2360,17 @@ static int try_to_wake_up(struct task_st
 	if (task_contributes_to_load(p))
 		rq->nr_uninterruptible--;
 	p->state = TASK_WAKING;
+	preempt_disable();
 	task_rq_unlock(rq, &flags);
 
 	cpu = p->sched_class->select_task_rq(p, SD_BALANCE_WAKE, wake_flags);
-	if (cpu != orig_cpu)
-		set_task_cpu(p, cpu);
-
-	rq = task_rq_lock(p, &flags);
-
-	if (rq != orig_rq)
+	if (cpu != orig_cpu) {
+		rq = cpu_rq_lock(cpu, &flags);
 		update_rq_clock(rq);
+		set_task_cpu(p, cpu);
+	} else
+		rq = task_rq_lock(p, &flags);
+	preempt_enable_no_resched();
 
 	if (rq->idle_stamp) {
 		u64 delta = rq->clock - rq->idle_stamp;
@@ -2365,7 +2384,6 @@ static int try_to_wake_up(struct task_st
 	}
 
 	WARN_ON(p->state != TASK_WAKING);
-	cpu = task_cpu(p);
 
 #ifdef CONFIG_SCHEDSTATS
 	schedstat_inc(rq, ttwu_count);



^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-06  5:34     ` Mike Galbraith
@ 2009-11-06 23:49       ` Kevin Winchester
  2009-11-07  4:45         ` Mike Galbraith
  0 siblings, 1 reply; 12+ messages in thread
From: Kevin Winchester @ 2009-11-06 23:49 UTC (permalink / raw)
  To: Mike Galbraith
  Cc: Ingo Molnar, Peter Zijlstra, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

Mike Galbraith wrote:
> Hi Kevin,
> 
> 
> I may have found the bad thing that could have happened to ksoftirqd.
> 
> If you feel like testing, try the below.  We were altering the task
> struct outside of locks, which is not interrupt etc safe.  It cures a
> problem I ran into, and will hopefully cure yours as well.
> 
> 
> sched: fix runqueue locking buglet.
> 
> Calling set_task_cpu() with the runqueue unlocked is unsafe.  Add cpu_rq_lock()
> locking primitive, and lock the runqueue.  Also, update rq->clock before calling
> set_task_cpu(), as it could be stale.
> 
> Running netperf UDP_STREAM with two pinned tasks with tip 1b9508f applied emitted
> the thoroughly unbelievable result that ratelimiting newidle could produce twice
> the throughput of the virgin kernel.  Reverting to locking the runqueue prior to
> runqueue selection restored benchmarking sanity, as did this patchlet.
> 
> Signed-off-by: Mike Galbraith <efault@gmx.de>
> Cc: Ingo Molnar <mingo@elte.hu>
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> LKML-Reference: <new-submission>

The patch below does not apply to mainline, unless I'm doing something wrong.
It's against -tip, I assume?  Is it just as applicable to mainline?

> 
> ---
>  kernel/sched.c |   32 +++++++++++++++++++++++++-------
>  1 file changed, 25 insertions(+), 7 deletions(-)
> 
> Index: linux-2.6.32.git/kernel/sched.c
> ===================================================================
> --- linux-2.6.32.git.orig/kernel/sched.c
> +++ linux-2.6.32.git/kernel/sched.c
> @@ -1011,6 +1011,24 @@ static struct rq *this_rq_lock(void)
>  	return rq;
>  }
>  
> +/*
> + * cpu_rq_lock - lock the runqueue a given cpu and disable interrupts.
> + */
> +static struct rq *cpu_rq_lock(int cpu, unsigned long *flags)
> +	__acquires(rq->lock)
> +{
> +	struct rq *rq = cpu_rq(cpu);
> +
> +	spin_lock_irqsave(&rq->lock, *flags);
> +	return rq;
> +}
> +
> +static inline void cpu_rq_unlock(struct rq *rq, unsigned long *flags)
> +	__releases(rq->lock)
> +{
> +	spin_unlock_irqrestore(&rq->lock, *flags);
> +}
> +
>  #ifdef CONFIG_SCHED_HRTICK
>  /*
>   * Use HR-timers to deliver accurate preemption points.
> @@ -2342,16 +2360,17 @@ static int try_to_wake_up(struct task_st
>  	if (task_contributes_to_load(p))
>  		rq->nr_uninterruptible--;
>  	p->state = TASK_WAKING;
> +	preempt_disable();
>  	task_rq_unlock(rq, &flags);
>  
>  	cpu = p->sched_class->select_task_rq(p, SD_BALANCE_WAKE, wake_flags);
> -	if (cpu != orig_cpu)
> -		set_task_cpu(p, cpu);
> -
> -	rq = task_rq_lock(p, &flags);
> -
> -	if (rq != orig_rq)
> +	if (cpu != orig_cpu) {
> +		rq = cpu_rq_lock(cpu, &flags);
>  		update_rq_clock(rq);
> +		set_task_cpu(p, cpu);
> +	} else
> +		rq = task_rq_lock(p, &flags);
> +	preempt_enable_no_resched();
>  
>  	if (rq->idle_stamp) {
>  		u64 delta = rq->clock - rq->idle_stamp;
> @@ -2365,7 +2384,6 @@ static int try_to_wake_up(struct task_st
>  	}
>  
>  	WARN_ON(p->state != TASK_WAKING);
> -	cpu = task_cpu(p);
>  
>  #ifdef CONFIG_SCHEDSTATS
>  	schedstat_inc(rq, ttwu_count);
> 
> 
> 


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-06 23:49       ` Kevin Winchester
@ 2009-11-07  4:45         ` Mike Galbraith
  2009-11-07 16:24           ` Kevin Winchester
  0 siblings, 1 reply; 12+ messages in thread
From: Mike Galbraith @ 2009-11-07  4:45 UTC (permalink / raw)
  To: Kevin Winchester
  Cc: Ingo Molnar, Peter Zijlstra, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

On Fri, 2009-11-06 at 19:49 -0400, Kevin Winchester wrote:

> The patch below does not apply to mainline, unless I'm doing something wrong.
> It's against -tip, I assume?  Is it just as applicable to mainline?

It was mainline, but I had the scheduler pull request and another in for
testing as well.  Linus has pulled, so it'll apply now, with offsets.

	-Mike


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-07  4:45         ` Mike Galbraith
@ 2009-11-07 16:24           ` Kevin Winchester
  2009-11-07 16:35             ` Peter Zijlstra
  0 siblings, 1 reply; 12+ messages in thread
From: Kevin Winchester @ 2009-11-07 16:24 UTC (permalink / raw)
  To: Mike Galbraith
  Cc: Ingo Molnar, Peter Zijlstra, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

Mike Galbraith wrote:
> On Fri, 2009-11-06 at 19:49 -0400, Kevin Winchester wrote:
> 
>> The patch below does not apply to mainline, unless I'm doing something wrong.
>> It's against -tip, I assume?  Is it just as applicable to mainline?
> 
> It was mainline, but I had the scheduler pull request and another in for
> testing as well.  Linus has pulled, so it'll apply now, with offsets.
> 

It did end up applying, but did not have any effect.  Looking at the patch
again, I see that it appears to only affect CONFIG_SMP, which I am not
running (and in fact it adds a build warning for the !SMP case).  So there
was not much chance of it fixing anything, I suppose.

Any other ideas?  I don't have a serial console, and the trace scrolls off
my console, so I don't know if any debug printks would help.  Would it help
if I copied the entire panic message entirely, including the Code section?
I can try that the next time it happens.

-- 
Kevin


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-07 16:24           ` Kevin Winchester
@ 2009-11-07 16:35             ` Peter Zijlstra
  2009-11-07 19:01               ` Rafael J. Wysocki
  2009-11-08  8:29               ` Con Kolivas
  0 siblings, 2 replies; 12+ messages in thread
From: Peter Zijlstra @ 2009-11-07 16:35 UTC (permalink / raw)
  To: Kevin Winchester
  Cc: Mike Galbraith, Ingo Molnar, LKML, Rafael J. Wysocki,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

On Sat, 2009-11-07 at 12:24 -0400, Kevin Winchester wrote:
> Mike Galbraith wrote:
> > On Fri, 2009-11-06 at 19:49 -0400, Kevin Winchester wrote:
> > 
> >> The patch below does not apply to mainline, unless I'm doing something wrong.
> >> It's against -tip, I assume?  Is it just as applicable to mainline?
> > 
> > It was mainline, but I had the scheduler pull request and another in for
> > testing as well.  Linus has pulled, so it'll apply now, with offsets.
> > 
> 
> It did end up applying, but did not have any effect.  Looking at the patch
> again, I see that it appears to only affect CONFIG_SMP, which I am not
> running (and in fact it adds a build warning for the !SMP case).  So there
> was not much chance of it fixing anything, I suppose.
> 
> Any other ideas?  I don't have a serial console, and the trace scrolls off
> my console, so I don't know if any debug printks would help.  Would it help
> if I copied the entire panic message entirely, including the Code section?
> I can try that the next time it happens.

Use vga=ask boot_delay=100 select the highest res possible.

Possibly you could use a digital (video) camera to record the output.


^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-07 16:35             ` Peter Zijlstra
@ 2009-11-07 19:01               ` Rafael J. Wysocki
  2009-11-08 17:28                 ` Pavel Machek
  2009-11-08  8:29               ` Con Kolivas
  1 sibling, 1 reply; 12+ messages in thread
From: Rafael J. Wysocki @ 2009-11-07 19:01 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: Kevin Winchester, Mike Galbraith, Ingo Molnar, LKML,
	Steven Rostedt, Andrew Morton, Paul E. McKenney, Yinghai Lu

On Saturday 07 November 2009, Peter Zijlstra wrote:
> On Sat, 2009-11-07 at 12:24 -0400, Kevin Winchester wrote:
> > Mike Galbraith wrote:
> > > On Fri, 2009-11-06 at 19:49 -0400, Kevin Winchester wrote:
> > > 
> > >> The patch below does not apply to mainline, unless I'm doing something wrong.
> > >> It's against -tip, I assume?  Is it just as applicable to mainline?
> > > 
> > > It was mainline, but I had the scheduler pull request and another in for
> > > testing as well.  Linus has pulled, so it'll apply now, with offsets.
> > > 
> > 
> > It did end up applying, but did not have any effect.  Looking at the patch
> > again, I see that it appears to only affect CONFIG_SMP, which I am not
> > running (and in fact it adds a build warning for the !SMP case).  So there
> > was not much chance of it fixing anything, I suppose.
> > 
> > Any other ideas?  I don't have a serial console, and the trace scrolls off
> > my console, so I don't know if any debug printks would help.  Would it help
> > if I copied the entire panic message entirely, including the Code section?
> > I can try that the next time it happens.
> 
> Use vga=ask boot_delay=100 select the highest res possible.
> 
> Possibly you could use a digital (video) camera to record the output.

FWIW, I see a crash in autoremove_wake_function() during resume from suspend
to RAM that happens immediately before the thawing of tasks.  It always happens
in the "events" thread.  I can trigger it quite reliably, although not 100% of
the time.

I can only see the bottom half of the call trace, so I can't really say what
kind of a crash this is.

Also, for quite some time I've been observing a resume-from-hibernation crash
during the final switch from a VT to X that could also be explained by a
problem with "events".

Best,
Rafael

^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-07 16:35             ` Peter Zijlstra
  2009-11-07 19:01               ` Rafael J. Wysocki
@ 2009-11-08  8:29               ` Con Kolivas
  1 sibling, 0 replies; 12+ messages in thread
From: Con Kolivas @ 2009-11-08  8:29 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: Kevin Winchester, Mike Galbraith, Ingo Molnar, LKML,
	Rafael J. Wysocki, Steven Rostedt, Andrew Morton,
	Paul E. McKenney <paulmck

On Sun, 8 Nov 2009 03:35:54 Peter Zijlstra wrote:
> On Sat, 2009-11-07 at 12:24 -0400, Kevin Winchester wrote:
> > Mike Galbraith wrote:
> > > On Fri, 2009-11-06 at 19:49 -0400, Kevin Winchester wrote:
> > >> The patch below does not apply to mainline, unless I'm doing something
> > >> wrong. It's against -tip, I assume?  Is it just as applicable to
> > >> mainline?
> > >
> > > It was mainline, but I had the scheduler pull request and another in
> > > for testing as well.  Linus has pulled, so it'll apply now, with
> > > offsets.
> >
> > It did end up applying, but did not have any effect.  Looking at the
> > patch again, I see that it appears to only affect CONFIG_SMP, which I am
> > not running (and in fact it adds a build warning for the !SMP case).  So
> > there was not much chance of it fixing anything, I suppose.
> >
> > Any other ideas?  I don't have a serial console, and the trace scrolls
> > off my console, so I don't know if any debug printks would help.  Would
> > it help if I copied the entire panic message entirely, including the Code
> > section? I can try that the next time it happens.
> 
> Use vga=ask boot_delay=100 select the highest res possible.
> 
> Possibly you could use a digital (video) camera to record the output.
> 

For what it's worth I've seen this on BFS and assumed it was a bfs issue until 
I spotted this thread so I'll tell you what I discovered when I was 
investigating it, but unfortunately I did not find the root cause.

Incredibly the bug happened in try_to_wake_up where the task struct that was 
in the call function (p) gets dereferenced before the rq lock is grabbed. Then 
when the rq lock is attempted to be grabbed it has no p to reference.

Further investigation showed it to always be ksoftirqd spawning on bootup only 
and never in any other situation. The factors that were common was that there 
would always be a conditional resched that occurred and that's how it would 
get lost. I tried stepping through the boot process on kvm but always came up 
stumped as to how on earth it even happened. The only common variable was that 
it -only- ever happened with voluntary preempt enabled, and not with full 
preempt or no-preempt. cond_resched is called 2 or 3 times during the boot 
sequence via might_sleep by that stage, but if I removed each might_sleep one 
at a time it would just happen from a different might_sleep, suggesting we 
weren't sleeping when we shouldn't. Since I'm anti-fan of voluntary preempt, I 
gave up trying to find the root cause and put this nonsense workaround in 
__cond_resched :

static void __cond_resched(void)
{
	if (unlikely(system_state != SYSTEM_RUNNING))
		return;

And it's still there in BFS, but it fixes the problem, in case someone wanted 
to use voluntary with bfs. I've long since lost the config that caused the 
problem reliably and can't guarantee that it's the same thing happening on 
mainline, but figured the information might be helpful.

Regards,
-- 
-ck

^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-07 19:01               ` Rafael J. Wysocki
@ 2009-11-08 17:28                 ` Pavel Machek
  2009-11-08 18:44                   ` Rafael J. Wysocki
  0 siblings, 1 reply; 12+ messages in thread
From: Pavel Machek @ 2009-11-08 17:28 UTC (permalink / raw)
  To: Rafael J. Wysocki
  Cc: Peter Zijlstra, Kevin Winchester, Mike Galbraith, Ingo Molnar,
	LKML, Steven Rostedt, Andrew Morton, Paul E. McKenney,
	Yinghai Lu


> > > if I copied the entire panic message entirely, including the Code section?
> > > I can try that the next time it happens.
> > 
> > Use vga=ask boot_delay=100 select the highest res possible.
> > 
> > Possibly you could use a digital (video) camera to record the output.
> 
> FWIW, I see a crash in autoremove_wake_function() during resume from suspend
> to RAM that happens immediately before the thawing of tasks.  It always happens
> in the "events" thread.  I can trigger it quite reliably, although not 100% of
> the time.
> 
> I can only see the bottom half of the call trace, so I can't really say what
> kind of a crash this is.

Our oops printing code sucks. It should mdelay after each screen or
something like that. Call trace should be in reverse order, so the
most useful parts stay on the screen...

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

^ permalink raw reply	[flat|nested] 12+ messages in thread
* Re: Intermittent early panic in try_to_wake_up
  2009-11-08 17:28                 ` Pavel Machek
@ 2009-11-08 18:44                   ` Rafael J. Wysocki
  0 siblings, 0 replies; 12+ messages in thread
From: Rafael J. Wysocki @ 2009-11-08 18:44 UTC (permalink / raw)
  To: Pavel Machek
  Cc: Peter Zijlstra, Kevin Winchester, Mike Galbraith, Ingo Molnar,
	LKML, Steven Rostedt, Andrew Morton, Paul E. McKenney,
	Yinghai Lu

On Sunday 08 November 2009, Pavel Machek wrote:
> 
> > > > if I copied the entire panic message entirely, including the Code section?
> > > > I can try that the next time it happens.
> > > 
> > > Use vga=ask boot_delay=100 select the highest res possible.
> > > 
> > > Possibly you could use a digital (video) camera to record the output.
> > 
> > FWIW, I see a crash in autoremove_wake_function() during resume from suspend
> > to RAM that happens immediately before the thawing of tasks.  It always happens
> > in the "events" thread.  I can trigger it quite reliably, although not 100% of
> > the time.
> > 
> > I can only see the bottom half of the call trace, so I can't really say what
> > kind of a crash this is.
> 
> Our oops printing code sucks. It should mdelay after each screen or
> something like that. Call trace should be in reverse order, so the
> most useful parts stay on the screen...

In this particular case it should fit into the screen, but it happens during
a VT switch or something like this.

Unfortunately, this issue turns out to be quite difficult to nail down and only
triggers in specific configurations.

Thanks,
Rafael

^ permalink raw reply	[flat|nested] 12+ messages in thread
end of thread, other threads:[~2009-11-08 18:43 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-10-22 23:33 Intermittent early panic in try_to_wake_up Kevin Winchester
2009-10-23  9:23 ` Mike Galbraith
2009-11-05 23:44   ` Kevin Winchester
2009-11-06  5:34     ` Mike Galbraith
2009-11-06 23:49       ` Kevin Winchester
2009-11-07  4:45         ` Mike Galbraith
2009-11-07 16:24           ` Kevin Winchester
2009-11-07 16:35             ` Peter Zijlstra
2009-11-07 19:01               ` Rafael J. Wysocki
2009-11-08 17:28                 ` Pavel Machek
2009-11-08 18:44                   ` Rafael J. Wysocki
2009-11-08  8:29               ` Con Kolivas

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