v2.6.21-rt3

v2.6.21-rt3

[Ingo Molnar]

i'm pleased to announce the v2.6.21-rt3 kernel, which can be downloaded 
from the usual place:

    http://redhat.com/~mingo/realtime-preempt/
 
more info about the -rt patchset can be found in the RT wiki:
 
    http://rt.wiki.kernel.org

This is a fixes-only release assembled by Thomas Gleixner. Many PPC 
fixes from Sergei Shtylyov, dynticks softirq fixes from Mikulas Patocka, 
a CONFIG_IRQSOFF_TIMING fix from Daniel Walker and x86_64 hrt fixes from 
Thomas Gleixner.

to build a 2.6.21-rt3 tree, the following patches should be applied:

  http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.21.tar.bz2
  http://redhat.com/~mingo/realtime-preempt/patch-2.6.21-rt3

	Ingo

Re: v2.6.21-rt3

[emin ak]

[-- Attachment #1: Type: text/plain, Size: 11097 bytes --]

Hi,
I have tried to compile -rt3 patch for ppc (mpc8540ads) and it failed
with undefined referance errors on ppc/kernel/asm-offsets.c. Here is
the compiler outputs:

  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/docproc
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/kxgettext.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/lex.zconf.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf -s arch/ppc/Kconfig
  CHK     include/linux/version.h
  UPD     include/linux/version.h
  CHK     include/linux/utsrelease.h
  UPD     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-ppc
  CC      arch/ppc/kernel/asm-offsets.s
In file included from arch/ppc/include/asm/hw_irq.h:110,
                 from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:92:1: warning: "raw_local_irq_save" redefined
In file included from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:103:1: warning: this is the location of
the previous definition
In file included from arch/ppc/include/asm/hw_irq.h:110,
                 from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:97:1: warning: "raw_local_irq_restore" redefined
In file included from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:59:1: warning: this is the location of
the previous definition
In file included from include/linux/time.h:7,
                 from include/linux/timex.h:57,
                 from include/linux/sched.h:51,
                 from arch/ppc/kernel/asm-offsets.c:12:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
arch/ppc/kernel/asm-offsets.c: In function 'main':
arch/ppc/kernel/asm-offsets.c:148: error: 'struct vdso_data' has no
member named 'tb_orig_stamp'
arch/ppc/kernel/asm-offsets.c:149: error: 'struct vdso_data' has no
member named 'tb_ticks_per_sec'
arch/ppc/kernel/asm-offsets.c:150: error: 'struct vdso_data' has no
member named 'tb_to_xs'
arch/ppc/kernel/asm-offsets.c:151: error: 'struct vdso_data' has no
member named 'stamp_xsec'
arch/ppc/kernel/asm-offsets.c:152: error: 'struct vdso_data' has no
member named 'tb_update_count'
arch/ppc/kernel/asm-offsets.c:153: error: 'struct vdso_data' has no
member named 'tz_minuteswest'
arch/ppc/kernel/asm-offsets.c:154: error: 'struct vdso_data' has no
member named 'tz_dsttime'
arch/ppc/kernel/asm-offsets.c:156: error: 'struct vdso_data' has no
member named 'wtom_clock_sec'
arch/ppc/kernel/asm-offsets.c:157: error: 'struct vdso_data' has no
member named 'wtom_clock_nsec'
make[1]: *** [arch/ppc/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2


For a workaround to overcome this problem, I have applied below patch
to asm-offsets.c:

diff -uNr linux-2.6.21/arch/ppc/kernel/asm-offsets.c
linux-2.6.21_orig/arch/ppc/kernel/asm-offsets.c
--- linux-2.6.21/arch/ppc/kernel/asm-offsets.c  2007-05-18
09:47:03.000000000 +0300
+++ linux-2.6.21_orj/arch/ppc/kernel/asm-offsets.c      2007-04-26
06:08:32.000000000 +0300
@@ -145,7 +145,6 @@
        DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28);

        /* datapage offsets for use by vdso */
-#ifdef CONFIG_PPC64
        DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct vdso_data, tb_orig_stamp));
        DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct vdso_data,
tb_ticks_per_sec));
        DEFINE(CFG_TB_TO_XS, offsetof(struct vdso_data, tb_to_xs));
@@ -153,11 +152,9 @@
        DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct vdso_data,
tb_update_count));
        DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct vdso_data, tz_minuteswest));
        DEFINE(CFG_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime));
+       DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
        DEFINE(WTOM_CLOCK_SEC, offsetof(struct vdso_data, wtom_clock_sec));
        DEFINE(WTOM_CLOCK_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
-#endif /* CONFIG_PPC64 */
-
-       DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
        DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec));
        DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec));
        DEFINE(TSPEC32_TV_SEC, offsetof(struct timespec, tv_sec));

Then it failed again on asm/hw_irq.h because of syntax errors. Here is
the outputs:

eminhp:/opt/tmp/linux_2.6.21/linux-2.6.21 # make uImage
scripts/kconfig/conf -s arch/ppc/Kconfig
  CHK     include/linux/version.h
  UPD     include/linux/version.h
  CHK     include/linux/utsrelease.h
  UPD     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-ppc
  CC      arch/ppc/kernel/asm-offsets.s
In file included from arch/ppc/include/asm/hw_irq.h:110,
                 from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:92:1: warning: "raw_local_irq_save" redefined
In file included from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:103:1: warning: this is the location of
the previous definition
In file included from arch/ppc/include/asm/hw_irq.h:110,
                 from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:97:1: warning: "raw_local_irq_restore" redefined
In file included from include/asm/system.h:10,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:59:1: warning: this is the location of
the previous definition
In file included from include/linux/time.h:7,
                 from include/linux/timex.h:57,
                 from include/linux/sched.h:51,
                 from arch/ppc/kernel/asm-offsets.c:12:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
  GEN     include/asm-ppc/asm-offsets.h
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/mod/modpost
  CC      init/main.o
In file included from include/asm/system.h:10,
                 from include/linux/spinlock.h:95,
                 from include/linux/module.h:9,
                 from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:59:1: warning: "raw_local_irq_restore" redefined
In file included from include/linux/spinlock.h:93,
                 from include/linux/module.h:9,
                 from init/main.c:13:
include/linux/irqflags.h:97:1: warning: this is the location of the
previous definition
In file included from include/asm/system.h:10,
                 from include/linux/spinlock.h:95,
                 from include/linux/module.h:9,
                 from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:65:46: error: macro
"raw_local_irq_disable" passed 1 arguments, but takes just 0
In file included from include/asm/system.h:10,
                 from include/linux/spinlock.h:95,
                 from include/linux/module.h:9,
                 from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:66: error: syntax error before '{' token
arch/ppc/include/asm/hw_irq.h:77:45: error: macro
"raw_local_irq_enable" passed 1 arguments, but takes just 0
arch/ppc/include/asm/hw_irq.h:78: error: syntax error before '{' token
arch/ppc/include/asm/hw_irq.h:103:1: warning: "raw_local_irq_save" redefined
In file included from include/linux/spinlock.h:93,
                 from include/linux/module.h:9,
                 from init/main.c:13:
include/linux/irqflags.h:92:1: warning: this is the location of the
previous definition
In file included from include/linux/time.h:7,
                 from include/linux/stat.h:57,
                 from include/linux/module.h:11,
                 from init/main.c:13:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
In file included from include/linux/rtc.h:102,
                 from include/linux/efi.h:19,
                 from init/main.c:43:
include/linux/interrupt.h: In function 'cli':
include/linux/interrupt.h:210: warning: implicit declaration of
function 'local_irq_disable'
include/linux/interrupt.h: In function 'sti':
include/linux/interrupt.h:214: warning: implicit declaration of
function 'local_irq_enable'
include/linux/interrupt.h: In function 'save_flags':
include/linux/interrupt.h:218: warning: implicit declaration of
function 'local_save_flags'
init/main.c: In function 'start_kernel':
init/main.c:566: warning: implicit declaration of function 'irqs_disabled'
make[1]: *** [init/main.o] Error 1
make: *** [init] Error 2

Is a a compiler issue related to assembler (I'am currently using
gcc-4.0.0) or is this a bug?

Thanks alot.
Emin

2007/5/17, Ingo Molnar <mingo@elte.hu>:
> i'm pleased to announce the v2.6.21-rt3 kernel, which can be downloaded
> from the usual place:
>
>    http://redhat.com/~mingo/realtime-preempt/
>
> more info about the -rt patchset can be found in the RT wiki:
>
>    http://rt.wiki.kernel.org
>
> This is a fixes-only release assembled by Thomas Gleixner. Many PPC
> fixes from Sergei Shtylyov, dynticks softirq fixes from Mikulas Patocka,
> a CONFIG_IRQSOFF_TIMING fix from Daniel Walker and x86_64 hrt fixes from
> Thomas Gleixner.
>
> to build a 2.6.21-rt3 tree, the following patches should be applied:
>
>  http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.21.tar.bz2
>  http://redhat.com/~mingo/realtime-preempt/patch-2.6.21-rt3
>
>        Ingo
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>

[-- Attachment #2: .config --]
[-- Type: text/plain, Size: 18780 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.21-rt1
# Thu May 17 16:40:32 2007
#
CONFIG_MMU=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_ARCH_HAS_ILOG2_U32=y
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_PPC=y
CONFIG_PPC32=y
CONFIG_GENERIC_NVRAM=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_GENERIC_BUG=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32

#
# General setup
#
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
# CONFIG_IPC_NS is not set
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
# CONFIG_UTS_NS is not set
# CONFIG_AUDIT is not set
# CONFIG_IKCONFIG is not set
CONFIG_SYSFS_DEPRECATED=y
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_EMBEDDED=y
CONFIG_SYSCTL_SYSCALL=y
# CONFIG_KALLSYMS is not set
# CONFIG_HOTPLUG is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
# CONFIG_EPOLL is not set
CONFIG_SHMEM=y
CONFIG_SLAB=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
# CONFIG_SLOB is not set

#
# Loadable module support
#
# CONFIG_MODULES is not set

#
# Block layer
#
CONFIG_BLOCK=y
# CONFIG_LBD is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_LSF is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
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"

#
# Processor
#
# CONFIG_6xx is not set
# CONFIG_40x is not set
# CONFIG_44x is not set
# CONFIG_8xx is not set
# CONFIG_E200 is not set
CONFIG_E500=y
# CONFIG_PPC_DCR_NATIVE is not set
CONFIG_BOOKE=y
CONFIG_FSL_BOOKE=y
# CONFIG_PHYS_64BIT is not set
CONFIG_SPE=y
CONFIG_MATH_EMULATION=y
# CONFIG_KEXEC is not set
# CONFIG_CPU_FREQ is not set
# CONFIG_WANT_EARLY_SERIAL is not set
CONFIG_PPC_GEN550=y
CONFIG_85xx=y
CONFIG_PPC_INDIRECT_PCI_BE=y

#
# Freescale 85xx options
#
CONFIG_MPC8540_ADS=y
# CONFIG_MPC8548_CDS is not set
# CONFIG_MPC8555_CDS is not set
# CONFIG_MPC8560_ADS is not set
# CONFIG_SBC8560 is not set
# CONFIG_STX_GP3 is not set
# CONFIG_TQM8540 is not set
# CONFIG_TQM8541 is not set
# CONFIG_TQM8555 is not set
# CONFIG_TQM8560 is not set
CONFIG_MPC8540=y

#
# Platform options
#
# CONFIG_HIGHMEM is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT_DESKTOP is not set
CONFIG_PREEMPT_RT=y
CONFIG_PREEMPT=y
CONFIG_PREEMPT_SOFTIRQS=y
CONFIG_PREEMPT_HARDIRQS=y
CONFIG_PREEMPT_BKL=y
# CONFIG_CLASSIC_RCU is not set
CONFIG_PREEMPT_RCU=y
CONFIG_RCU_TRACE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_ASM_SEMAPHORES=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_RESOURCES_64BIT is not set
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_PM is not set
CONFIG_SECCOMP=y
CONFIG_ISA_DMA_API=y

#
# Bus options
#
CONFIG_ZONE_DMA=y
CONFIG_PPC_I8259=y
CONFIG_PPC_INDIRECT_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y

#
# PCCARD (PCMCIA/CardBus) support
#
# CONFIG_RAPIDIO is not set

#
# Advanced setup
#
# CONFIG_ADVANCED_OPTIONS is not set

#
# Default settings for advanced configuration options are used
#
CONFIG_HIGHMEM_START=0xfe000000
CONFIG_LOWMEM_SIZE=0x30000000
CONFIG_KERNEL_START=0xc0000000
CONFIG_TASK_SIZE=0x80000000
CONFIG_BOOT_LOAD=0x00800000

#
# Networking
#
CONFIG_NET=y

#
# Networking options
#
# CONFIG_NETDEBUG is not set
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
# CONFIG_IP_PNP_RARP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_ARPD is not set
CONFIG_SYN_COOKIES=y
# 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=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# 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_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set

#
# DCCP Configuration (EXPERIMENTAL)
#
# CONFIG_IP_DCCP is not set

#
# SCTP Configuration (EXPERIMENTAL)
#
# CONFIG_IP_SCTP is not set

#
# TIPC Configuration (EXPERIMENTAL)
#
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE 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

#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_IEEE80211 is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
# CONFIG_SYS_HYPERVISOR is not set

#
# Connector - unified userspace <-> kernelspace linker
#
# CONFIG_CONNECTOR is not set

#
# Memory Technology Devices (MTD)
#
# CONFIG_MTD is not set

#
# Parallel port support
#
# CONFIG_PARPORT is not set

#
# Plug and Play support
#
# CONFIG_PNPACPI is not set

#
# Block devices
#
# 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=y
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=32768
CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set

#
# Misc devices
#
# CONFIG_SGI_IOC4 is not set
# CONFIG_TIFM_CORE is not set

#
# ATA/ATAPI/MFM/RLL support
#
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# CONFIG_SCSI_NETLINK is not set

#
# Serial ATA (prod) and Parallel ATA (experimental) drivers
#
# CONFIG_ATA is not set

#
# Multi-device support (RAID and LVM)
#
# CONFIG_MD is not set

#
# Fusion MPT device support
#
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_IEEE1394 is not set

#
# I2O device support
#
# CONFIG_I2O is not set

#
# Macintosh device drivers
#
# CONFIG_MAC_EMUMOUSEBTN is not set
# CONFIG_WINDFARM is not set

#
# Network device support
#
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set

#
# ARCnet devices
#
# CONFIG_ARCNET is not set

#
# PHY device support
#
CONFIG_PHYLIB=y

#
# MII PHY device drivers
#
# CONFIG_MARVELL_PHY is not set
# CONFIG_DAVICOM_PHY is not set
# CONFIG_QSEMI_PHY is not set
# CONFIG_LXT_PHY is not set
# CONFIG_CICADA_PHY is not set
# CONFIG_VITESSE_PHY is not set
# CONFIG_SMSC_PHY is not set
# CONFIG_BROADCOM_PHY is not set
# CONFIG_FIXED_PHY is not set

#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NET_VENDOR_3COM is not set

#
# Tulip family network device support
#
# CONFIG_NET_TULIP is not set
# CONFIG_HP100 is not set
# CONFIG_NET_PCI is not set

#
# Ethernet (1000 Mbit)
#
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
# CONFIG_E1000 is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
# CONFIG_SK98LIN is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2 is not set
CONFIG_GIANFAR=y
CONFIG_GFAR_NAPI=y
# CONFIG_QLA3XXX is not set
# CONFIG_ATL1 is not set

#
# Ethernet (10000 Mbit)
#
# CONFIG_CHELSIO_T1 is not set
# CONFIG_CHELSIO_T3 is not set
# CONFIG_IXGB is not set
# CONFIG_S2IO is not set
# CONFIG_MYRI10GE is not set
# CONFIG_NETXEN_NIC is not set

#
# Token Ring devices
#
# CONFIG_TR is not set

#
# Wireless LAN (non-hamradio)
#
# CONFIG_NET_RADIO is not set

#
# Wan interfaces
#
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_SHAPER is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# Telephony Support
#
# CONFIG_PHONE is not set

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

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_TSDEV is not set
# CONFIG_INPUT_EVDEV is not set
# 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_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 is not set
# CONFIG_SERIAL_NONSTANDARD is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256

#
# IPMI
#
# CONFIG_IPMI_HANDLER is not set

#
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
CONFIG_HW_RANDOM=y
# CONFIG_NVRAM is not set
CONFIG_GEN_RTC=y
# CONFIG_GEN_RTC_X is not set
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_AGP is not set
# CONFIG_DRM is not set
# CONFIG_RAW_DRIVER is not set

#
# TPM devices
#
# CONFIG_TCG_TPM is not set
CONFIG_RMEM=y
CONFIG_ALLOC_RTSJ_MEM=y

#
# I2C support
#
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y

#
# I2C Algorithms
#
# CONFIG_I2C_ALGOBIT is not set
# CONFIG_I2C_ALGOPCF is not set
# CONFIG_I2C_ALGOPCA is not set

#
# I2C Hardware Bus support
#
# 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_I810 is not set
# CONFIG_I2C_PIIX4 is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 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 is not set
# CONFIG_I2C_VOODOO3 is not set
# CONFIG_I2C_PCA_ISA is not set

#
# Miscellaneous I2C Chip support
#
# CONFIG_SENSORS_DS1337 is not set
# CONFIG_SENSORS_DS1374 is not set
# CONFIG_SENSORS_EEPROM is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCA9539 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_M41T00 is not set
# CONFIG_SENSORS_MAX6875 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

#
# SPI support
#
# CONFIG_SPI is not set
# CONFIG_SPI_MASTER is not set

#
# Dallas's 1-wire bus
#
# CONFIG_W1 is not set

#
# Hardware Monitoring support
#
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_SENSORS_ABITUGURU 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_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_FSCHER is not set
# CONFIG_SENSORS_FSCPOS is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM 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_MAX1619 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 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_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set

#
# Digital Video Broadcasting Devices
#
# CONFIG_DVB is not set

#
# Graphics support
#
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
# CONFIG_FB is not set
# CONFIG_FB_IBM_GXT4500 is not set

#
# Sound
#
# CONFIG_SOUND is not set

#
# HID Devices
#
CONFIG_HID=y
# CONFIG_HID_DEBUG is not set

#
# USB support
#
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
# CONFIG_USB is not set

#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#

#
# USB Gadget Support
#
# CONFIG_USB_GADGET is not set

#
# MMC/SD Card support
#
# CONFIG_MMC is not set

#
# LED devices
#
# CONFIG_NEW_LEDS is not set

#
# LED drivers
#

#
# LED Triggers
#

#
# InfiniBand support
#
# CONFIG_INFINIBAND is not set

#
# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
#

#
# Real Time Clock
#
# CONFIG_RTC_CLASS is not set

#
# DMA Engine support
#
CONFIG_DMA_ENGINE=y

#
# DMA Clients
#
CONFIG_NET_DMA=y

#
# DMA Devices
#
CONFIG_INTEL_IOATDMA=y

#
# Auxiliary Display support
#

#
# Virtualization
#

#
# 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_FS_XATTR=y
# CONFIG_EXT3_FS_POSIX_ACL is not set
# CONFIG_EXT3_FS_SECURITY is not set
# CONFIG_EXT4DEV_FS is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
CONFIG_DNOTIFY=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
# CONFIG_CONFIGFS_FS is not set

#
# Miscellaneous filesystems
#
# 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_VXFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set

#
# Network File Systems
#
CONFIG_NFS_FS=y
# CONFIG_NFS_V3 is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_DIRECTIO is not set
# CONFIG_NFSD is not set
CONFIG_ROOT_NFS=y
CONFIG_LOCKD=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
# CONFIG_RPCSEC_GSS_KRB5 is not set
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_9P_FS is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
# CONFIG_EFI_PARTITION is not set

#
# Native Language Support
#
# CONFIG_NLS is not set

#
# Distributed Lock Manager
#
# CONFIG_DLM is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
CONFIG_CRC32=y
# CONFIG_LIBCRC32C is not set
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
# CONFIG_PROFILING is not set

#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_DEBUG_FS is not set
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
# CONFIG_FUNCTION_TRACE is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
# CONFIG_UNWIND_INFO is not set
# CONFIG_SERIAL_TEXT_DEBUG is not set

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set

#
# Cryptographic options
#
# CONFIG_CRYPTO is not set

Re: v2.6.21-rt3

[Thomas Gleixner]

On Fri, 2007-05-18 at 10:39 +0300, emin ak wrote:
> Hi,
> I have tried to compile -rt3 patch for ppc (mpc8540ads) and it failed
> with undefined referance errors on ppc/kernel/asm-offsets.c. Here is
> the compiler outputs:

arch/ppc is known to be broken. Does it even compile on 2.6.21 vanilla ?

	tglx

Re: v2.6.21-rt3

[emin ak]

Yes, 2.6.21 was compiled and boot successfully for ppc, Is 85xx family
supported for powerpc arch?
Thanks.

2007/5/18, Thomas Gleixner <tglx@linutronix.de>:
> On Fri, 2007-05-18 at 10:39 +0300, emin ak wrote:
> > Hi,
> > I have tried to compile -rt3 patch for ppc (mpc8540ads) and it failed
> > with undefined referance errors on ppc/kernel/asm-offsets.c. Here is
> > the compiler outputs:
>
> arch/ppc is known to be broken. Does it even compile on 2.6.21 vanilla ?
>
>         tglx
>
>
>

Re: v2.6.21-rt3

[Thomas Gleixner]

Please do not top post !

On Fri, 2007-05-18 at 11:10 +0300, emin ak wrote:
> Yes, 2.6.21 was compiled and boot successfully for ppc, Is 85xx family
> supported for powerpc arch?

I don't know. You might ask the folks on the ppc mailing list.

	tglx

Re: v2.6.21-rt3

[Wolfgang Grandegger]

Thomas Gleixner wrote:
> Please do not top post !
> 
> On Fri, 2007-05-18 at 11:10 +0300, emin ak wrote:
>> Yes, 2.6.21 was compiled and boot successfully for ppc, Is 85xx family
>> supported for powerpc arch?
> 
> I don't know. You might ask the folks on the ppc mailing list.

E.g. check http://lxr.free-electrons.com/source/arch/powerpc/configs/. 
Even your board seems supported. But you need a boot loader aware of the 
  Open Firmware Flat Device Tree.

Wolfgang.

Re: v2.6.21-rt3

[K.R. Foley]

[-- Attachment #1: Type: text/plain, Size: 416 bytes --]

Ingo Molnar wrote:
> i'm pleased to announce the v2.6.21-rt3 kernel, which can be downloaded 
> from the usual place:
> 

This is actually regarding v2.6.21-rt5 but I don't remember seeing an
announcement for that one. The attached patch is necessary if you happen
to have RTC_HISTOGRAM enabled, which I'm guessing most folks don't.

BTW, what was the consensus on pagefault_enable and pagefault_disable?

-- 
   kr

[-- Attachment #2: fixrtc.patch --]
[-- Type: text/x-patch, Size: 511 bytes --]

--- linux-2.6.21/drivers/char/rtc.c.orig	2007-05-21 08:32:42.000000000 -0500
+++ linux-2.6.21/drivers/char/rtc.c	2007-05-21 08:33:49.000000000 -0500
@@ -93,6 +93,10 @@
 #include <asm/isa.h>
 #endif
 
+static unsigned long rtc_port;
+static int rtc_irq = PCI_IRQ_NONE;
+#endif
+
 #ifdef CONFIG_MIPS
 # include <asm/time.h>
 #endif
@@ -119,10 +123,6 @@ enum rtc_states {
 
 #endif
 
-static unsigned long rtc_port;
-static int rtc_irq = PCI_IRQ_NONE;
-#endif
-
 #ifdef	CONFIG_HPET_RTC_IRQ
 #undef	RTC_IRQ
 #endif

Re: v2.6.21-rt3

[Daniel Walker]

Where did the arm ep93xx changes come from? It looks like patch below
came in with them in 2.6.21-rt6 ..

--- linux.orig/include/asm-arm/system.h
+++ linux/include/asm-arm/system.h
@@ -235,8 +235,9 @@ static inline void set_copro_access(unsi
  * so enable interrupts over the context switch to avoid high
  * latency.
  */
+#if 0 // preempt_rt hack, because warn_on in shedule.c triggers
 #define __ARCH_WANT_INTERRUPTS_ON_CTXSW
-
+#endif
 /*
  * switch_to(prev, next) should switch from task `prev' to `next'
  * `prev' will never be the same as `next'.  schedule() itself

Re: v2.6.21-rt3

[Thomas Gleixner]

On Mon, 2007-05-21 at 13:11 -0700, Daniel Walker wrote:
> Where did the arm ep93xx changes come from? 

Grown out of my nose probably.

> It looks like patch below
> came in with them in 2.6.21-rt6 ..

So what ?

	tglx

Re: v2.6.21-rt3

[Daniel Walker]

On Mon, 2007-05-21 at 22:24 +0200, Thomas Gleixner wrote:
> On Mon, 2007-05-21 at 13:11 -0700, Daniel Walker wrote:
> > Where did the arm ep93xx changes come from? 
> 
> Grown out of my nose probably.
> 
> > It looks like patch below
> > came in with them in 2.6.21-rt6 ..
> 
> So what ?

It's silencing a WARN_ON() with no real reason why it's happening, or
why/if it's safe to silence it .. Why is that there?

Daniel

Re: v2.6.21-rt3

[Thomas Gleixner]

On Mon, 2007-05-21 at 13:25 -0700, Daniel Walker wrote:
> On Mon, 2007-05-21 at 22:24 +0200, Thomas Gleixner wrote:
> > On Mon, 2007-05-21 at 13:11 -0700, Daniel Walker wrote:
> > > Where did the arm ep93xx changes come from? 
> > 
> > Grown out of my nose probably.
> > 
> > > It looks like patch below
> > > came in with them in 2.6.21-rt6 ..
> > 
> > So what ?
> 
> It's silencing a WARN_ON() with no real reason why it's happening, or
> why/if it's safe to silence it .. Why is that there?

Care to look at the code ? 

	tglx

Re: v2.6.21-rt3

[Daniel Walker]

On Mon, 2007-05-21 at 22:36 +0200, Thomas Gleixner wrote:
> On Mon, 2007-05-21 at 13:25 -0700, Daniel Walker wrote:
> > On Mon, 2007-05-21 at 22:24 +0200, Thomas Gleixner wrote:
> > > On Mon, 2007-05-21 at 13:11 -0700, Daniel Walker wrote:
> > > > Where did the arm ep93xx changes come from? 
> > > 
> > > Grown out of my nose probably.
> > > 
> > > > It looks like patch below
> > > > came in with them in 2.6.21-rt6 ..
> > > 
> > > So what ?
> > 
> > It's silencing a WARN_ON() with no real reason why it's happening, or
> > why/if it's safe to silence it .. Why is that there?
> 
> Care to look at the code ? 

I copied the patch into the first email, I did look at it which is why
you got an email. Your introducing the patch , it's for you to explain
why it needs to be there.. considering that the comment says "hack" in
it, I have to wonder what the non-hack version is ..

Daniel

Re: v2.6.21-rt3

[Ingo Molnar]

* Daniel Walker <dwalker@mvista.com> wrote:

> I copied the patch into the first email, I did look at it which is why 
> you got an email. Your introducing the patch , it's for you to explain 
> why it needs to be there.. considering that the comment says "hack" in 
> it, I have to wonder what the non-hack version is ..

you might not have realized it, but the problem i think was the attitude 
you showed in the very first sentence:

> Where did the arm ep93xx changes come from? It looks like patch below 
> came in with them in 2.6.21-rt6 ..

AFAICS Thomas just mirrored that snotty comment back to you, and yes, 
when you are on the receiving end it feels nasty, doesnt it? So please 
restart and rephrase that into a more polite form and you might get an 
answer (although i certainly do not talk for Thomas). Something like:

> Thomas, could you give me a bit more information about why the arm 
> ep93xx changes were done in 2.6.21-rt6? I do not seem to understand 
> the reason behind that change. I've attached the change below. Thanks!

You are asking Thomas a favor after all... Be a bit more polite when 
asking others, and a completely new world might open up for you :-)

	Ingo

Re: v2.6.21-rt3

[Daniel Walker]

On Tue, 2007-05-22 at 10:25 +0200, Ingo Molnar wrote:
> * Daniel Walker <dwalker@mvista.com> wrote:
> 
> > I copied the patch into the first email, I did look at it which is why 
> > you got an email. Your introducing the patch , it's for you to explain 
> > why it needs to be there.. considering that the comment says "hack" in 
> > it, I have to wonder what the non-hack version is ..
> 
> you might not have realized it, but the problem i think was the attitude 
> you showed in the very first sentence:

I was not intending any attitude. I had no idea where those changes came
from ..

> > Where did the arm ep93xx changes come from? It looks like patch below 
> > came in with them in 2.6.21-rt6 ..
> 
> AFAICS Thomas just mirrored that snotty comment back to you, and yes, 
> when you are on the receiving end it feels nasty, doesnt it? So please 
> restart and rephrase that into a more polite form and you might get an 
> answer (although i certainly do not talk for Thomas). Something like:

I don't read the sentence you quoted as snotty at all ..  I had no idea
where the changes came from, and I was simply asking that.. Since there
isn't a history for the -rt patch, I honestly don't know where some of
the code comes from ..

Since I had no idea that Thomas wrote that code, there's no premeditated
aggravation, or flame bait there.. 

> > Thomas, could you give me a bit more information about why the arm 
> > ep93xx changes were done in 2.6.21-rt6? I do not seem to understand 
> > the reason behind that change. I've attached the change below. Thanks!
> 
> You are asking Thomas a favor after all... Be a bit more polite when 
> asking others, and a completely new world might open up for you :-)

I don't see that as me asking a favor.. If a patch crosses LKML and I
ask "Why does this hunk exist?" that's not a favor. That is pure code
review, which is exactly what I was doing in this thread. Which is
reviewing code and asking questions..

I hope you don't read my comments above as snotty cause it's not suppose
to be, just conversation..

Daniel