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2010-04-12MIPS: Big Sur: Make defconfig more useful.Ralf Baechle1-190/+490
Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Fix __vmalloc() etc. on MIPS for non-GPL modulesAnton Altaparmakov1-1/+1
Commit b3594a089f1c17ff919f8f78505c3f20e1f6f8ce (lmo) rsp. 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 (kernel.org) break non-GPL modules that use __vmalloc() or any of the vmap(), vm_map_ram(), etc functions on MIPS. All those functions are EXPORT_SYMBOL() so are meant to be allowed to be used by non-GPL kernel modules. These calls all take page protection as an argument which is normally a constant like PAGE_KERNEL. This commit causes all protection constants like PAGE_KERNEL to not be constants and instead to contain the GPL-only symbol _page_cachable_default. This means that all calls to __vmalloc(), vmap(), etc, cause non-GPL modules to fail to link with the complaint that they are trying to use the GPL-only symbol _page_cachable_default... Change EXPORT_SYMBOL_GPL(_page_cachable_default) to EXPORT_SYMBOL() for non-GPL modules that call __vmalloc(), vmap(), vm_map_ram() etc. Signed-off-by: Anton Altaparmakov <[email protected]> Cc: Chris Dearman <[email protected]> Cc: [email protected] Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1084/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Sibyte: Fix M3 TLB exception handler workaround.Ralf Baechle1-6/+16
The M3 workaround needs to cmpare the region and VPN2 fields only. Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Fix build failure in board_bcm963xx.cFlorian Fainelli1-70/+70
Since 2083e8327aeeaf818b0e4522a9d2539835c60423, the SPROM is now registered in the board_prom_init callback, but it references variables and functions which are declared below. Move the variables and functions above board_prom_init. Signed-off-by: Florian Fainelli <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1077/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: uasm: Add OR instruction.Ralf Baechle2-1/+4
This is needed for the fix of the M3 workaround. Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Sibyte: Apply M3 workaround only on affected chip types and versions.Ralf Baechle2-1/+20
Previously it was unconditionally used on all Sibyte family SOCs. The M3 bug has to be handled in the TLB exception handler which is extremly performance sensitive, so this modification is expected to deliver around 2-3% performance improvment. This is important as required changes to the M3 workaround will make it more costly. Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Initialize gpio_out_low & out_high to current value at boot.Maxime Bizon1-0/+2
To avoid a glitch during GPIO initialisation read GPIO output register values left by the firmware. Signed-off-by: Maxime Bizon <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/903/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Register SSB SPROM fallback in board's first stage callbackFlorian Fainelli1-11/+11
Signed-off-by: Florian Fainelli <[email protected]> To: Maxime Bizon <[email protected]> Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1017/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Fix typo in cpu-feature-overrides file.Maxime Bizon1-1/+1
Fix typo: CONFIG_BCMCPU_IS_63xx does not exist; CONFIG_BCM63XX_CPU_63xx is the valid config option. Signed-off-by: Maxime Bizon <[email protected]> To: [email protected] Cc: Maxime Bizon <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/901/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Add support for second uart.Maxime Bizon6-19/+102
The BCm63xx SOC has two uarts. Some boards use the second one for bluetooth. This patch changes platform device registration code to handle this. Changes to the UART driver were already merged in 6a2c7eabfd09ca7986bf96b8958a87ca041a19d8. Signed-off-by: Maxime Bizon <[email protected]> To: [email protected] Cc: Maxime Bizon <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/900/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Fix double gpio registration.Maxime Bizon1-2/+0
bcm63xx_gpio_init is already called from prom_init to allow board to use them early, so we can remove the unneeded arch_initcall. Signed-off-by: Maxime Bizon <[email protected]> To: [email protected] Cc: Maxime Bizon <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/899/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Add DWVS0 boardFlorian Fainelli1-0/+22
The DWVS0 board is a BCM6358-based board with an on-board OHCI controler. Signed-off-by: Florian Fainelli <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1015/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Add the RTA1025W-16 BCM6348-based board to suppported boards.Florian Fainelli1-0/+20
Signed-off-by: Florian Fainelli <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1014/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: BCM63xx: Fix BCM6338 and BCM6345 gpio countFlorian Fainelli1-0/+4
The number of GPIOs on BCM6338 is 8, while BCM6345 has only 16 GPIOs available. Signed-off-by: Florian Fainelli <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1016/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: libgcc.h: Checkpatch cleanupAndrea Gelmini1-2/+1
arch/mips/lib/libgcc.h:21: ERROR: open brace '{' following union go on the same line Signed-off-by: Andrea Gelmini <[email protected]> To: [email protected] Cc: Paul Mundt <[email protected]> Cc: [email protected] Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1007/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Loongson-2F: Flush the branch target history in BTB and RASWu Zhangjin1-0/+19
As per chapter 15 "Errata: Issue of Out-of-order in loongson"[1] to work around the Loongson 2F erratum we need to do: "When switching from user mode to kernel mode, you should flush the branch target history such as BTB and RAS." [1] Chinese version: http://www.loongson.cn/uploadfile/file/200808211 [2] English version of chapter 15: http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source Signed-off-by: Wu Zhangjin <[email protected]> Cc: [email protected] Cc: Shinya Kuribayashi <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/1066/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Move signal trampolines off of the stack.David Daney5-135/+43
This is a follow on to the vdso patch. Since all processes now have signal trampolines permanently mapped, we can use those instead of putting the trampoline on the stack and invalidating the corresponding icache across all CPUs. We also get rid of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code. [Ralf: GDB 7.1 which has the necessary modifications to allow backtracing over signal frames will supposedly be released tomorrow. The old signal frame format obsoleted by this patch exists in two variations, for sane processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR. So there was never a GDB which did support backtracing over signal frames on all MIPS systems. This convinved me this series should be applied and pushed upstream as soon as possible.] Signed-off-by: David Daney <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/974/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Preliminary VDSODavid Daney8-6/+165
This is a preliminary patch to add a vdso to all user processes. Still missing are ELF headers and .eh_frame information. But it is enough to allow us to move signal trampolines off of the stack. Note that emulation of branch delay slots in the FPU emulator still requires the stack. We allocate a single page (the vdso) and write all possible signal trampolines into it. The stack is moved down by one page and the vdso is mapped into this space. Signed-off-by: David Daney <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/975/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Add SYSCALL to uasm.David Daney2-2/+18
Signed-off-by: David Daney <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/976/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Fix SSB PCIcore IO resource managementAndreas Ferber1-29/+0
The SSB PCIcore code reused the IO resource fixup code from the original 2.4.x Broadcom patch for BCM47xx based devices, which was a quick hack for doing PCI IO resource configuration back then (the boot loader doesn't configure PCI devices on this platform). However, this code is no longer necessary since the kernel now can do PCI resource management fine all by itself, so remove the old code. When removing the code, it becomes obvious that the mem_offset setting in the PCIcore driver was wrong, however this was masked by the fixup code before, except in a few cases involving yenta_socket. For BCM47xx, the correct offset is 0, and since this is the only device using PCIcore in host mode, the offset can simply be removed unconditionally. Signed-off-by: Andreas Ferber <[email protected]> Signed-off-by: Michael Buesch <[email protected]> Cc: Markus Wigge <[email protected]> Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1070/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSETFlorian Fainelli1-2/+4
On AR7, we already redefine PHYS_OFFSET to match the system specifities, it is however not sufficient when unsing dma_{map,unmap}_single, specifically in the ethernet driver, we must also adjust CAC_ADDR and UNCAC_ADDR for DMA to work correctly. This patch fixes the following issue, seen in cpmac_open: ops[#1]: Cpu 0 $ 0 : 00000000 10008400 a0f5b120 00000000 $ 4 : 94c59000 94270f64 00000020 00000010 $ 8 : 00000010 94103ce0 0000000a 94c03400 $12 : ffffffff 94c03408 94c03410 00000001 $16 : a0f5ba20 00000041 94c592c0 94c59200 $20 : 94c59000 000005ee 00002000 9438c8f0 $24 : 00000010 00000000 $28 : 94fac000 94fadd58 94390000 942724a8 Hi : 00000000 Lo : 00000001 epc : 94272518 cpmac_open+0x208/0x3f8 Not tainted ra : 942724a8 cpmac_open+0x198/0x3f8 Status: 10008403 KERNEL EXL IE Cause : 3080000c BadVA : 00000000 PrId : 00018448 (MIPS 4KEc) Modules linked in: Process ifconfig (pid: 278, threadinfo=94fac000, task=94e79590, tls=00000000) Stack : 7f8da120 2ab05cb0 94c59000 943356f0 00000000 943d0000 94c59000 943356f0 94c59030 943d0000 943c27c0 94fade10 00000000 94fade20 94c59000 9428e5a4 00000000 94c59000 00000041 94289768 94c59000 00000041 00001002 00001043 00000000 9428d810 00000000 94fade10 7f8da4e8 9428e6b8 00000000 7f8da4a8 7f8da4e8 00008914 00000000 942f7f2c 00000000 00000008 00408000 00008913 ... Call Trace: [<94272518>] cpmac_open+0x208/0x3f8 [<9428e5a4>] dev_open+0x164/0x264 [<9428d810>] dev_change_flags+0xd0/0x1bc [<942f7f2c>] devinet_ioctl+0x2d8/0x908 [<942771f8>] sock_ioctl+0x29c/0x2fc [<941a0fb4>] vfs_ioctl+0x2c/0x7c [<941a16ec>] do_vfs_ioctl+0x5dc/0x630 [<941a1790>] sys_ioctl+0x50/0x88 [<94101e10>] stack_done+0x20/0x3c Signed-off-by: peter fuerst <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1050/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: AR7: Fix phat finger of cpmac fixed_phy_addAlexander Clouter1-0/+1
Seems I trimmed one too many lines in 29ca2d81bd2a62fa86bc9a72ddadcf03d7daf795 (lmo) rsp 7084338eb8eb0cc021ba86c340157bad397f3f0b (kernel.org) which led to no functioning Ethernet on my WAG54Gv2. This patch restores the AWOL line. Signed-off-by: Alexander Clouter <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1065/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: AR7: Fix phat finger of reset bit in vlynq_high_dataAlexander Clouter1-1/+1
Seems in my whitespace cleanup 0f2536082d01448daeced8d9e82c3ba1751fefa3 (lmo) rsp. 8c2961da46abd85a71d20f2b169bf80618e (kernel.org) caused AR7 to no longer get as far as init. Fixed my phat fingering. Signed-off-by: Alexander Clouter <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1064/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Loongson: Add module info to the loongson2_clock driverWu Zhangjin1-0/+4
This patch fixes a kernel warning when loading the the loongson2_clock driver: "Feb 25 23:42:27 localhost kernel: [ 4.965000] loongson2_clock: module license 'unspecified' taints kernel." Signed-off-by: Wu Zhangjin <[email protected]> Reported-by: Liu Shiwei <[email protected]> Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1045/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Lemote 2F: Ensure atomic execution of _rdmsr and _wrmsrWu Zhangjin1-0/+10
On Lemote 2F CS5536 MSRs are accessed through a index / data register pair. The access sequence must be protected by a spinlock to be atomic. Without this rebooting in fs2f_reboot() may fail. Signed-off-by: Wu Zhangjin <[email protected]> Cc: [email protected] Cc: David Daney <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/1058/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Initialize an atomic_t properly with ATOMIC_INIT(0).Robert P. J. Day1-1/+1
Signed-off-by: Robert P. J. Day <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1008/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Fix elfcore.c build warningRalf Baechle1-0/+1
kernel/elfcore.c includes <linux/elf.h> which includes the <asm/elf.h>. In <asm/elf.h>, struct pt_regs is declared inside the parameter list of the elf_dump_regs function which causes a kernel build warning. Fixed by adding a forward declaration of struct pt_regs. Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Octeon: Remove redundant declaration of octeon_reserve32_memoryYang Shi1-3/+0
octeon_reserve32_memory is defined In Octeon's setup.c, so remove the redundant extern declaration of this variable. Signed-off-by: Yang Shi <[email protected]> To: [email protected] Cc: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1022/ Acked-by: David Daney <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Trace: Don't trace irqsoff for the idle processWu Zhangjin1-1/+6
Like x86 did in arch/x86/kernel/{process_32.c,process_64.c}, also don't trace irqsoff for idle. If there's no useful work to be done, we don't care about the irqsoff duration. If we trace the idle process, the max duration of irqsoff will be the idle time and make the irqsoff tracer useless. Signed-off-by: Wu Zhangjin <[email protected]> Cc: [email protected] Cc: Steven Rostedt <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Patchwork: http://patchwork.linux-mips.org/patch/1044/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: delay: Fix use of current_cpu_data in preemptable code.Ralf Baechle1-2/+2
This may lead to warnings like: BUG: using smp_processor_id() in preemptible [00000000] code: reboot/1989 caller is __udelay+0x14/0x70 Call Trace: [<ffffffff8110ad28>] dump_stack+0x8/0x34 [<ffffffff812dde04>] debug_smp_processor_id+0xf4/0x110 [<ffffffff812d90bc>] __udelay+0x14/0x70 [<ffffffff81378274>] md_notify_reboot+0x12c/0x148 [<ffffffff81161054>] notifier_call_chain+0x64/0xc8 [<ffffffff811614dc>] __blocking_notifier_call_chain+0x64/0xc0 [<ffffffff8115566c>] kernel_restart_prepare+0x1c/0x38 [<ffffffff811556cc>] kernel_restart+0x14/0x50 [<ffffffff8115581c>] SyS_reboot+0x10c/0x1f0 [<ffffffff81103684>] handle_sysn32+0x44/0x84 Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Octeon: Remove #if 0 code.David Daney1-12/+0
Signed-off-by: David Daney <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1029/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32_USE_WIRED_TLBDavid Daney1-66/+1
The config option CAVIUM_RESERVE32_USE_WIRED_TLB is not supported. Remove the dead code controlled by it. Signed-off-by: David Daney <[email protected]> To: [email protected] Patchwork: http://patchwork.linux-mips.org/patch/1028/ Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Cavium: Remove unused watchdog code.Ralf Baechle1-8/+0
Signed-off-by: Ralf Baechle <[email protected]>
2010-04-12MIPS: Fix build breakage if CONFIG_DEBUG_FS is enabled.Ralf Baechle1-1/+5
Caused by 38b7827fcdd660f591d645bd3ae6644456a4773c - no, cpu_local_* was not unused. Signed-off-by: Ralf Baechle <[email protected]> Cc: Christoph Lameter <[email protected]> Acked-by: David Daney <[email protected]>
2010-04-12NFSv4: fix delegated lockingTrond Myklebust3-2/+6
Arnaud Giersch reports that NFSv4 locking is broken when we hold a delegation since commit 8e469ebd6dc32cbaf620e134d79f740bf0ebab79 (NFSv4: Don't allow posix locking against servers that don't support it). According to Arnaud, the lock succeeds the first time he opens the file (since we cannot do a delegated open) but then fails after we start using delegated opens. The following patch fixes it by ensuring that locking behaviour is governed by a per-filesystem capability flag that is initially set, but gets cleared if the server ever returns an OPEN without the NFS4_OPEN_RESULT_LOCKTYPE_POSIX flag being set. Reported-by: Arnaud Giersch <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Cc: [email protected]
2010-04-12nilfs2: fix typo "numer" -> "number" in alloc.cRyusuke Konishi1-1/+1
Fixes the typo found in a warning message of a persistent object allocator function. Signed-off-by: Ryusuke Konishi <[email protected]>
2010-04-11Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller4636-6193/+13245
2010-04-11Revert "tcp: Set CHECKSUM_UNNECESSARY in tcp_init_nondata_skb"David S. Miller1-1/+0
This reverts commit 2626419ad5be1a054d350786b684b41d23de1538. It causes regressions for people with IGB cards. Connection requests don't complete etc. The true cause of the issue is still not known, but we should sort this out in net-next-2.6 not net-2.6 Signed-off-by: David S. Miller <[email protected]>
2010-04-10PM / Hibernate: user.c, fix SNAPSHOT_SET_SWAP_AREA handlingJiri Slaby1-1/+1
When CONFIG_DEBUG_BLOCK_EXT_DEVT is set we decode the device improperly by old_decode_dev and it results in an error while hibernating with s2disk. All users already pass the new device number, so switch to new_decode_dev(). Signed-off-by: Jiri Slaby <[email protected]> Reported-and-tested-by: Jiri Kosina <[email protected]> Signed-off-by: "Rafael J. Wysocki" <[email protected]>
2010-04-09NFS: Ensure that the WRITE and COMMIT RPC calls are always uninterruptibleTrond Myklebust1-7/+16
We always want to ensure that WRITE and COMMIT completes, whether or not the user presses ^C. Do this by making the call asynchronous, and allowing the user to do an interruptible wait for rpc_task completion. Signed-off-by: Trond Myklebust <[email protected]>
2010-04-09NFS: Fix a race with the new commit codeTrond Myklebust1-7/+10
This patch fixes a race which occurs due to the fact that we release the PG_writeback flag while still holding the nfs_page locked. Signed-off-by: Trond Myklebust <[email protected]>
2010-04-09NFS: Ensure that writeback_single_inode() calls write_inode() when syncingTrond Myklebust1-2/+2
Since writeback_single_inode() checks the inode->i_state flags _before_ it flushes out the data, we need to ensure that the I_DIRTY_DATASYNC flag is already set. Otherwise we risk not seeing a call to write_inode(), which again means that we break fsync() et al... Signed-off-by: Trond Myklebust <[email protected]>
2010-04-09NFS: Fix the mode calculation in nfs_find_open_contextTrond Myklebust1-4/+4
Signed-off-by: Trond Myklebust <[email protected]>
2010-04-09NFSv4: Fall back to ordinary lookup if nfs4_atomic_open() returns EISDIRTrond Myklebust1-1/+1
Signed-off-by: Trond Myklebust <[email protected]> Cc: [email protected]
2010-04-09Merge branch 'for-linus' of ↵Linus Torvalds4-7/+7
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Check correct variable for allocation failure RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp() RDMA/cm: Set num_paths when manually assigning path records IB/cm: Fix device_create() return value check
2010-04-09Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds8-26/+55
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] Update default configuration. [S390] nss: add missing .previous statement to asm function [S390] increase default size of vmalloc area [S390] s390: disable change bit override [S390] fix io_return critical section cleanup [S390] sclp_async: potential buffer overflow [S390] arch/s390/kernel: Add missing unlock
2010-04-09Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds34-178/+475
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits) cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch loop: Update mtime when writing using aops block: expose the statistics in blkio.time and blkio.sectors for the root cgroup backing-dev: Handle class_create() failure Block: Fix block/elevator.c elevator_get() off-by-one error drbd: lc_element_by_index() never returns NULL cciss: unlock on error path cfq-iosched: Do not merge queues of BE and IDLE classes cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging i2o: Remove the dangerous kobj_to_i2o_device macro block: remove 16 bytes of padding from struct request on 64bits cfq-iosched: fix a kbuild regression block: make CONFIG_BLK_CGROUP visible Remove GENHD_FL_DRIVERFS block: Export max number of segments and max segment size in sysfs block: Finalize conversion of block limits functions block: Fix overrun in lcm() and move it to lib vfs: improve writeback_inodes_wb() paride: fix off-by-one test drbd: fix al-to-on-disk-bitmap for 4k logical_block_size ...
2010-04-09Merge branch 'drm-linus' of ↵Linus Torvalds33-298/+508
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (29 commits) drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers drm/nv50: implement gpio set/get routines drm/nv50: parse/use some more de-magiced parts of gpio table entries drm/nouveau: store raw gpio table entry in bios gpio structs drm/nv40: Init some tiling-related PGRAPH state. drm/nv50: Add NVA3 support in ctxprog/ctxvals generator. drm/nv50: another dodgy DP hack drm/nv50: punt hotplug irq handling out to workqueue drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders drm/nv50: Allow using the NVA3 new compute class. drm/nv50: cleanup properly if PDISPLAY init fails drm/nouveau: fixup the init failure paths some more drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark drm/nv40: add LVDS table quirk for Dell Latitude D620 drm/nv40: rework lvds table parsing drm/nouveau: detect vram amount once, and save the value drm/nouveau: remove some unused members from drm_nouveau_private drm/nouveau: Make use of TTM busy_placements. drm/nv50: add more 0x100c80 flushy magic drm/nv50: fix fbcon when framebuffer above 4GiB mark ...
2010-04-09radix_tree_tag_get() is not as safe as the docs make out [ver #2]David Howells2-6/+13
radix_tree_tag_get() is not safe to use concurrently with radix_tree_tag_set() or radix_tree_tag_clear(). The problem is that the double tag_get() in radix_tree_tag_get(): if (!tag_get(node, tag, offset)) saw_unset_tag = 1; if (height == 1) { int ret = tag_get(node, tag, offset); may see the value change due to the action of set/clear. RCU is no protection against this as no pointers are being changed, no nodes are being replaced according to a COW protocol - set/clear alter the node directly. The documentation in linux/radix-tree.h, however, says that radix_tree_tag_get() is an exception to the rule that "any function modifying the tree or tags (...) must exclude other modifications, and exclude any functions reading the tree". The problem is that the next statement in radix_tree_tag_get() checks that the tag doesn't vary over time: BUG_ON(ret && saw_unset_tag); This has been seen happening in FS-Cache: https://www.redhat.com/archives/linux-cachefs/2010-April/msg00013.html To this end, remove the BUG_ON() from radix_tree_tag_get() and note in various comments that the value of the tag may change whilst the RCU read lock is held, and thus that the return value of radix_tree_tag_get() may not be relied upon unless radix_tree_tag_set/clear() and radix_tree_delete() are excluded from running concurrently with it. Reported-by: Romain DEGEZ <[email protected]> Signed-off-by: David Howells <[email protected]> Acked-by: Nick Piggin <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-04-09slub: Fix kmem_ptr_validate() for non-kernel pointersPekka Enberg1-0/+3
As suggested by Linus, fix up kmem_ptr_validate() to handle non-kernel pointers more graciously. The patch changes kmem_ptr_validate() to use the newly introduced kern_ptr_validate() helper to check that a pointer is a valid kernel pointer before we attempt to convert it into a 'struct page'. Cc: Andrew Morton <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Matt Mackall <[email protected]> Cc: Nick Piggin <[email protected]> Signed-off-by: Pekka Enberg <[email protected]> Acked-by: Christoph Lameter <[email protected]> Acked-by: David Rientjes <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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