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2009-01-30MIPS: R2: Fix broken installation of cache error handler.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: IP27: Switch from DMA_IP27 to DMA_COHERENTRalf Baechle
The special IP27 DMA code selected by DMA_IP27 has been removed a while ago turning DMA_IP27 into almost a nop. Also fixup the broken logic of its last users memcpy.S and memcpy-inatomic.s. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Add return value checks to user_termio_to_kernel_termios()Ralf Baechle
And while at it, convert all functions from macros to inline functions for sanity. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Octeon: Remove duplicated #includesHuang Weiyi
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: atomic_*(): Change type of intermediate variables.Ralf Baechle
This shaves of 1912 bytes of an IP27 defconfig kernel and avoids unexpected overflow behaviour in atomic_sub_if_positive. Apply the same changes to the atomic64_* functions for consistency. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Port "mm: invoke oom-killer from page fault" from UML / x86Ralf Baechle
Original commit 1c0fe6e3bda0464728c23c8d84aa47567e8b716c. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Avoid destructive invalidation on partial cachelines.Ralf Baechle
See discussion e9c3a7c20901051031y528d0d31r18d44c5096c59e0@mail.gmail.com. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: SMTC: Fix build after recent creditial changes.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-29Documentation: move DMA-mapping.txt to Doc/PCI/Randy Dunlap
Move DMA-mapping.txt to Documentation/PCI/. DMA-mapping.txt was supposed to be moved from Documentation/ to Documentation/PCI/. The 00-INDEX files in those two directories were updated, along with a few other text files, but the file itself somehow escaped being moved, so move it and update more text files and source files with its new location. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: Fix a memory leak with the lg object during launcher close lguest: disable the FORTIFY for lguest. lguest: typos fix
2009-01-29alpha: fix the BUG() macroIvan Kokshaysky
The commit "alpha: teach the compiler that BUG doesn't return" (ed6b9b97f42c091630335bfb71a2931e6f86388b) moved the asm code into inline function which takes __FILE__ and __LINE__ as arguments. This violates asm constrains there ("i" - an immediate operand with constant value), so that compile may result in warning or error, depending on compiler version. Just adding an infinite loop to the BUG() is sufficient. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29alpha: compile fixesIvan Kokshaysky
- jensen build: fix conflicting declarations for pci_alloc_consistent() and undefined virt_to_phys(); - SMP: arch/alpha/kernel/smp.c:124: warning: passing argument 2 of '__cpu_test_and_set' discards qualifiers from pointer target type Interestingly, this only happens with gcc-4.2; gcc <= 4.1 and gcc-4.3 are OK. Fixed with extra assignment. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29alpha: use syscall wrappersIvan Kokshaysky
Convert OSF syscalls and add alpha specific SYSCALL_ALIAS() macro. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30lguest: typos fixAtsushi SAKAI
3 points lguest_asm.S => i386_head.S LHCALL_BREAK => LHREQ_BREAK perferred => preferred Signed-off-by: Atsushi SAKAI <sakaia@jp.fujitsu.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-28Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup code powerpc/pseries: Correct VIO bus accounting problem in CMO env. powerpc: More printing warning fixes for the l64 to ll64 conversion powerpc: Remove arch/ppc cruft from Kconfig powerpc: Printing fix for l64 to ll64 conversion: phyp_dump.c powerpc/embedded6xx: Update defconfigs powerpc/8xx: Update defconfigs powerpc/86xx: Update defconfigs powerpc/83xx: Update defconfigs powerpc/85xx: Update defconfigs powerpc/mpc8313erdb: fix kernel panic because mdio device is not probed powerpc/4xx: Update multi-board PowerPC 4xx defconfigs powerpc/44x: Update PowerPC 44x defconfigs powerpc/40x: Update PowerPC 40x defconfigs powerpc/85xx: Fix typo in mpc8572ds dts powerpc/44x: Warp patches for the new NDFC driver powerpc/4xx: DTS: Add Add'l SDRAM0 Compatible and Interrupt Info
2009-01-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: fix 5329 ColdFire periphal addressing uclinux: add process name to allocation error message m68knommu: correct the mii calculations for 532x ColdFire FEC m68knommu: add ColdFire M532x to the FEC configuration options m68knommu: fix syscall restarting m68knommu: remove the obsolete and long unused comempci chip support m68knommu: remove the no longer used PCI support option m68knommu: remove obsolete and unused eLIA board m68knommu: set NO_DMA m68knommu: fix cache flushing for the 527x ColdFire processors m68knommu: fix ColdFire 5272 serial baud rates in mcf.c m68knommu: use one exist from execption
2009-01-28powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup codeGerhard Pircher
_PAGE_COHERENT is now always set in _PAGE_RAM resp. PAGE_KERNEL. Thus it has to be masked out, if the BAT mapping should be non cacheable or CPU_FTR_NEED_COHERENT is not set. This will work on normal SMP setups because we force-set CPU_FTR_NEED_COHERENT as part of CPU_FTR_COMMON on SMP. Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-28powerpc/pseries: Correct VIO bus accounting problem in CMO env.Robert Jennings
In the VIO bus code the wrappers for dma alloc_coherent and free_coherent calls are rounding to IOMMU_PAGE_SIZE. Taking a look at the underlying calls, the actual mapping is promoted to PAGE_SIZE. Changing the rounding in these two functions fixes under-reporting the entitlement used by the system. Without this change, the system could run out of entitlement before it believes it has and incur mapping failures at the firmware level. Also in the VIO bus code, the wrapper for dma map_sg is not exiting in an error path where it should. Rather than fall through to code for the success case, this patch adds the return that is needed in the error path. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-28powerpc: Remove arch/ppc cruft from KconfigJosh Boyer
Remove some leftover cruft from the arch/ppc days Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-28powerpc: Printing fix for l64 to ll64 conversion: phyp_dump.cStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-28Merge commit 'jwb/jwb-merge' into mergeBenjamin Herrenschmidt
Manual merge of: arch/powerpc/configs/44x/warp_defconfig
2009-01-28Merge commit 'kumar/kumar-merge' into mergeBenjamin Herrenschmidt
2009-01-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (36 commits) USB: Driver for Freescale QUICC Engine USB Host Controller USB: option: add QUANTA HSDPA Data Card device ids USB: storage: Add another unusual_dev for off-by-one bug USB: unusual_dev: usb-storage needs to ignore a device USB: GADGET: fix !x & y USB: new id for ti_usb_3410_5052 driver USB: cdc-acm: Add another conexant modem to the quirks USB: 'option' driver - onda device MT503HS has wrong id USB: Remove ZTE modem from unusual_devices USB: storage: support of Dane-Elec MediaTouch USB device USB: usbmon: Implement compat_ioctl USB: add kernel-doc for wusb_dev in struct usb_device USB: ftdi_sio driver support of bar code scanner from Diebold USB: ftdi_sio: added Alti-2 VID and Neptune 3 PID USB: cp2101 device USB: usblp.c: add USBLP_QUIRK_BIDIR to Brother HL-1440 USB: remove vernier labpro from ldusb USB: CDC-ACM quirk for MTK GPS USB: cdc-acm: support some gps data loggers USB: composite: Fix bug: low byte of w_index is the usb interface number not the whole 2 bytes of w_index ...
2009-01-27USB: musb_hdrc: another davinci buildfix (otg related)David Brownell
The DaVinci code had an implementation of the OTG transceiver glue too; make it use the new-standard one. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-27Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata-rb532-cf: remove set_irq_type from finish_io [libata] pata_via: support VX855, future chips whose IDE controller use 0x0571 sata_mv: no longer experimental (v2) sata_mv: msi masking fix (v2) sata_mv: Properly initialize main irq mask sata_mv: remove bogus nsect restriction sata_mv: don't read hc_irq_cause sata_mv: fix 8-port timeouts on 508x/6081 chips sata_nv: fix MCP5x reset sata_nv: rename nv_nf2_hardreset() libata: set NODEV_HINT for 0x7f status libata-sff: fix incorrect EH message
2009-01-27m68knommu: fix 5329 ColdFire periphal addressingMatt Waddel
The 5329 ColdFire peripheral IO register addresses are not relative to the MBAR register. So fix the serial platform setup array and IRQ acking to use just the direct addresses. Signed-off-by: Matt Waddel <Matt.Waddel@freescale.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: fix syscall restartingGreg Ungerer
Make restart blocks working, required for proper syscall restarting. Derived from same changes for m68k arch by Andreas Schwab <schwab@suse.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: remove the obsolete and long unused comempci chip supportGreg Ungerer
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: remove the no longer used PCI support optionAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: remove obsolete and unused eLIA boardAdrian Bunk
Greg Ungerer said about this board: Only ever a handful where made, and that was in 1999. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: set NO_DMAAdrian Bunk
m68knommu does not set the Kconfig NO_DMA variable, but also does not provide the required functions, resulting in the following build error triggered by commit a40c24a13366e324bc0ff8c3bb107db89312c984 (net: Add SKB DMA mapping helper functions.): <-- snip --> .. LD vmlinux net/built-in.o: In function `skb_dma_unmap': (.text+0xac5e): undefined reference to `dma_unmap_single' net/built-in.o: In function `skb_dma_unmap': (.text+0xac7a): undefined reference to `dma_unmap_page' net/built-in.o: In function `skb_dma_map': (.text+0xacdc): undefined reference to `dma_map_single' net/built-in.o: In function `skb_dma_map': (.text+0xace8): undefined reference to `dma_mapping_error' net/built-in.o: In function `skb_dma_map': (.text+0xad10): undefined reference to `dma_map_page' net/built-in.o: In function `skb_dma_map': (.text+0xad82): undefined reference to `dma_unmap_page' net/built-in.o: In function `skb_dma_map': (.text+0xadc6): undefined reference to `dma_unmap_single' make[1]: *** [vmlinux] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: fix cache flushing for the 527x ColdFire processorsGreg Ungerer
Fix cache flushing for the 527x ColdFire processors Its CACR register format is slightly different. Along with this add support for flushing the 523x cache, which uses the same format as the 527x ColdFire's, and was missing flush support. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-27m68knommu: use one exist from execptionSebastian Siewior
Part of the code that did not make sense to me got removed by Greg. This is part two: The first compare is to check whether the interrupts are disabled or not. Depending on the result we exectute the RESTORE_ALL macro is not only restoring the stack but also returning to caller. The test for pending softirq has been removed because it is allready done in irq_exit(). Since system_call() is allso using the SAVE_ALL macro and returning via ret_from_exception label I see no reason why we could not do this here as well. This is also handy because if we return from the timer interrupt and we need to resched than we check for this :) Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-01-26powerpc/embedded6xx: Update defconfigsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26powerpc/8xx: Update defconfigsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26powerpc/86xx: Update defconfigsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26powerpc/83xx: Update defconfigsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26powerpc/85xx: Update defconfigsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: (22 commits) [ARM] fix section-based ioremap [NET] am79c961a: fix spin_lock usage [ARM] omap: usb: thou shalt not provide empty release functions [ARM] omap: watchdog: allow OMAP watchdog driver on OMAP34xx platforms [ARM] 5369/1: omap mmc: Add new omap hsmmc controller for 2430 and 34xx, v3 [ARM] clkdev: fix clock matching [ARM] 5370/1: at91: fix rm9200 watchdog [ARM] 5368/1: arch/arm/mach-davinci/usb.c buildfix [ARM] 5365/1: s3cmci: Use new include path of dma.h [ARM] fix StrongARM-11x0 page copy implementation [ARM] omap: ensure OMAP drivers pass a struct device to clk_get() ARM: OMAP: Fix compile for h3 MMC ARM: OMAP: Remove unused platform devices, v3 ARM: OMAP: Fix ASoC by enabling writes to XCCR and RCCR McBSP registers, v3 ARM: OMAP: Fix OSK ASoC by registering I2C board info for tlvaic23 ARM: OMAP: remove duplicated #include's ARM: OMAP: Fix DMA CCR programming for request line > 63, v3 ARM: OMAP: Fix gpio.c compile on 15xx with CONFIG_DEBUGFS ARM: OMAP: Fix compile for beagle ARM: OMAP: Fix gpio by switching to generic gpio calls, v2 ...
2009-01-26Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Warn on deprecated binding model use eeprom: More consistent symbol names eeprom: Move 93cx6 eeprom driver to /drivers/misc/eeprom spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom i2c: Move old eeprom driver to /drivers/misc/eeprom i2c: Move at24 to drivers/misc/eeprom i2c: Quilt tree has moved i2c: Delete many unused adapter IDs i2c: Delete 10 unused driver IDs
2009-01-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: fix kbuild.txt typos kbuild: print usage with no arguments in scripts/config Revert "kbuild: strip generated symbols from *.ko"
2009-01-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix DAX handling via userspace access from kernel. sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx() [CVE-2009-0029] sparc: Enable syscall wrappers for 64-bit sparc64: Initialize FHC/CLOCK LED platform_device 'id' field correctly. sparc64: fix modpost failure sparc64: fix readout of cpu/fpu type
2009-01-26powerpc/mpc8313erdb: fix kernel panic because mdio device is not probedLi Yang
Probe the new mdio node added by b31a1d8b. Fix kernel panic problem when gianfar driver wants to get the of_platform_device of that mdio. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-26eeprom: More consistent symbol namesJean Delvare
Now that all EEPROM drivers live in the same place, let's harmonize their symbol names. Also fix eeprom's dependencies, it definitely needs sysfs, and is no longer experimental after many years in the kernel tree. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net>
2009-01-26m68k{nommu}: fixups after the header moveHarvey Harrison
swab.h seems to have been missed during the header merge. Add conditionals similar to byteorder.h and remove the now unnecessary byteorder_no/mm.h Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-26Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k,m68knommu: merge header files Resolve trivial conflict in arch/m68knommu/include/asm/Kbuild
2009-01-26Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Add missing compat system call wrappers. [S390] etr/stp: fix possible deadlock [S390] cputime: fix lowcore initialization on cpu hotplug [S390] fix compat sigaltstack syscall table entry [S390] personality: fix personality loss on execve
2009-01-26Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: i.MX31: framebuffer driver i.MX31: Image Processing Unit DMA and IRQ drivers dmaengine: add async_tx_clear_ack() macro dmaengine: dma_issue_pending_all == nop when CONFIG_DMA_ENGINE=n dmaengine: kill some dubious WARN_ONCEs fsldma: print correct IRQ on mpc83xx fsldma: check for NO_IRQ in fsl_dma_chan_remove() dmatest: Use custom map/unmap for destination buffer fsldma: use a valid 'device' for dma_pool_create dmaengine: fix dependency chaining
2009-01-26Merge branch 'sh/for-2.6.29' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (22 commits) dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy. dma-coherent: per-device coherent area is in pages, not bytes. sh: fix unaligned and nonexistent address handling nommu: Stub in vm_map_ram()/vm_unmap_ram()/vm_unmap_aliases(). sh: fix sh-sci / early printk build on sh7723 sh: export the sh7343 JPU to user space sh: update defconfigs. serial: sh-sci: Fix up SH7720/SH7721 SCI build. sh: Kill off obsolete busses from arch/sh/Kconfig. sh: sh7785lcr/highlander/hp6xx need linux/irq.h. sh: Migo-R MMC support using spi_gpio and mmc_spi. sh: ap325rxa MMC support using spi_gpio and mmc_spi sh: mach-x3proto: needs linux/irq.h. sh: Drop the BKL from sys_execve() on SH-5. sh: convert rsk7203 to use smsc911x. sh: convert magicpanelr2 platform to use smsc911x. sh: convert ap325rxa platform to use smsc911x. sh: mach-migor: Add tw9910 support. sh: mach-migor: Delete soc_camera_platform setup. sh: mach-migor: Add ov772x support. ...
2009-01-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: add and use INIT_WORK_ON_STACK rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR relay: fix lock imbalance in relay_late_setup_files oprofile: fix uninitialized use of struct op_entry rcu: move Kconfig menu softlock: fix false panic which can occur if softlockup_thresh is reduced rcu: add __cpuinit to rcu_init_percpu_data()