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* MIPS: Big Sur: Make defconfig more useful.Ralf Baechle2010-04-121-190/+490
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix __vmalloc() etc. on MIPS for non-GPL modulesAnton Altaparmakov2010-04-121-1/+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 <aia21@cantab.net> Cc: Chris Dearman <chris@mips.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/1084/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Sibyte: Fix M3 TLB exception handler workaround.Ralf Baechle2010-04-121-6/+16
| | | | | | The M3 workaround needs to cmpare the region and VPN2 fields only. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Fix build failure in board_bcm963xx.cFlorian Fainelli2010-04-121-70/+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 <ffainelli@freebox.fr> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1077/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: uasm: Add OR instruction.Ralf Baechle2010-04-122-1/+4
| | | | | | This is needed for the fix of the M3 workaround. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Sibyte: Apply M3 workaround only on affected chip types and versions.Ralf Baechle2010-04-122-1/+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 <ralf@linux-mips.org>
* MIPS: BCM63xx: Initialize gpio_out_low & out_high to current value at boot.Maxime Bizon2010-04-121-0/+2
| | | | | | | | | | To avoid a glitch during GPIO initialisation read GPIO output register values left by the firmware. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/903/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Register SSB SPROM fallback in board's first stage callbackFlorian Fainelli2010-04-121-11/+11
| | | | | | | | Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> To: Maxime Bizon <mbizon@freebox.fr> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1017/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Fix typo in cpu-feature-overrides file.Maxime Bizon2010-04-121-1/+1
| | | | | | | | | | | Fix typo: CONFIG_BCMCPU_IS_63xx does not exist; CONFIG_BCM63XX_CPU_63xx is the valid config option. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> To: linux-mips@linux-mips.org Cc: Maxime Bizon <mbizon@freebox.fr> Patchwork: http://patchwork.linux-mips.org/patch/901/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Add support for second uart.Maxime Bizon2010-04-126-19/+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 <mbizon@freebox.fr> To: linux-mips@linux-mips.org Cc: Maxime Bizon <mbizon@freebox.fr> Patchwork: http://patchwork.linux-mips.org/patch/900/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Fix double gpio registration.Maxime Bizon2010-04-121-2/+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 <mbizon@freebox.fr> To: linux-mips@linux-mips.org Cc: Maxime Bizon <mbizon@freebox.fr> Patchwork: http://patchwork.linux-mips.org/patch/899/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Add DWVS0 boardFlorian Fainelli2010-04-121-0/+22
| | | | | | | | | The DWVS0 board is a BCM6358-based board with an on-board OHCI controler. Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1015/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Add the RTA1025W-16 BCM6348-based board to suppported boards.Florian Fainelli2010-04-121-0/+20
| | | | | | | Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1014/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM63xx: Fix BCM6338 and BCM6345 gpio countFlorian Fainelli2010-04-121-0/+4
| | | | | | | | | | The number of GPIOs on BCM6338 is 8, while BCM6345 has only 16 GPIOs available. Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1016/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: libgcc.h: Checkpatch cleanupAndrea Gelmini2010-04-121-2/+1
| | | | | | | | | | | | arch/mips/lib/libgcc.h:21: ERROR: open brace '{' following union go on the same line Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> To: linux-kernel@vger.kernel.org Cc: Paul Mundt <lethal@linux-sh.org> Cc: linux-mips@linux-mips.org Cc: linux-sh@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/1007/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson-2F: Flush the branch target history in BTB and RASWu Zhangjin2010-04-121-0/+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 <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Patchwork: http://patchwork.linux-mips.org/patch/1066/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Move signal trampolines off of the stack.David Daney2010-04-125-135/+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 <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/974/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Preliminary VDSODavid Daney2010-04-128-6/+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 <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/975/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Add SYSCALL to uasm.David Daney2010-04-122-2/+18
| | | | | | | Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/976/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix SSB PCIcore IO resource managementAndreas Ferber2010-04-121-29/+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 <af@chaos-agency.de> Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Markus Wigge <markus@cultcom.de> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1070/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSETFlorian Fainelli2010-04-121-2/+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 <post@pfrst.de> Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1050/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: AR7: Fix phat finger of cpmac fixed_phy_addAlexander Clouter2010-04-121-0/+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 <alex@digriz.org.uk> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1065/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: AR7: Fix phat finger of reset bit in vlynq_high_dataAlexander Clouter2010-04-121-1/+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 <alex@digriz.org.uk> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1064/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson: Add module info to the loongson2_clock driverWu Zhangjin2010-04-121-0/+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 <wuzhangjin@gmail.com> Reported-by: Liu Shiwei <liushiwei@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1045/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lemote 2F: Ensure atomic execution of _rdmsr and _wrmsrWu Zhangjin2010-04-121-0/+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 <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1058/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Initialize an atomic_t properly with ATOMIC_INIT(0).Robert P. J. Day2010-04-121-1/+1
| | | | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1008/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix elfcore.c build warningRalf Baechle2010-04-121-0/+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 <ralf@linux-mips.org>
* MIPS: Octeon: Remove redundant declaration of octeon_reserve32_memoryYang Shi2010-04-121-3/+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 <yang.shi@windriver.com> To: f.fainelli@gmail.com Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1022/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Trace: Don't trace irqsoff for the idle processWu Zhangjin2010-04-121-1/+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 <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Patchwork: http://patchwork.linux-mips.org/patch/1044/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: delay: Fix use of current_cpu_data in preemptable code.Ralf Baechle2010-04-121-2/+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 <ralf@linux-mips.org>
* MIPS: Octeon: Remove #if 0 code.David Daney2010-04-121-12/+0
| | | | | | | Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1029/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32_USE_WIRED_TLBDavid Daney2010-04-121-66/+1
| | | | | | | | | | The config option CAVIUM_RESERVE32_USE_WIRED_TLB is not supported. Remove the dead code controlled by it. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1028/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Cavium: Remove unused watchdog code.Ralf Baechle2010-04-121-8/+0
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix build breakage if CONFIG_DEBUG_FS is enabled.Ralf Baechle2010-04-121-1/+5
| | | | | | | | | Caused by 38b7827fcdd660f591d645bd3ae6644456a4773c - no, cpu_local_* was not unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Christoph Lameter <cl@linux-foundation.org> Acked-by: David Daney <ddaney@caviumnetworks.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-04-094-7/+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
| *---. Merge branches 'cma', 'misc', 'mlx4' and 'nes' into for-linusRoland Dreier2010-04-093-7/+6
| |\ \ \
| | | | * RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp()Chien Tung2010-04-071-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cap.max_inline_data is incorrectly set in init_attr instead of attr. Set it in attr so subsequent init_attr.cap assignment will get the correct value. Signed-off-by: Chien Tung <chien.tin.tung@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| | | * | IB/mlx4: Check correct variable for allocation failureDan Carpenter2010-04-071-1/+1
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The intent here is to check the "mfrpl->mapped_page_list" allocation. We checked "mfrpl->ibfrpl.page_list" earlier. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| | * / IB/cm: Fix device_create() return value checkJani Nikula2010-03-311-1/+1
| | |/ | | | | | | | | | | | | | | | | | | Use IS_ERR() instead of comparing to NULL. Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * / RDMA/cm: Set num_paths when manually assigning path recordsSean Hefty2010-04-071-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | When manually assigning the path records to use for a connection, save the number of paths that were set. Otherwise, checks against num_path will show 0, even though path record data is available. This was discovered by manually setting the path records from user space, then querying the kernel to see if the correct path records were assigned, only to discover that the kernel returned 0 path records to the query. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds2010-04-098-26/+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
| * | [S390] Update default configuration.Martin Schwidefsky2010-04-091-10/+30
| | | | | | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] nss: add missing .previous statement to asm functionHeiko Carstens2010-04-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The savesys_ipl_nss asm function is put into the .init.text section however it is missing a ".previous" section which would restore the previous section. Luckily all functions in early.c are init functions so it doesn't matter currently. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] increase default size of vmalloc areaMartin Schwidefsky2010-04-091-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default size of the vmalloc area is currently 1 GB. The memory resource controller uses about 10 MB of vmalloc space per gigabyte of memory. That turns a system with more than ~100 GB memory unbootable with the default vmalloc size. It costs us nothing to increase the default size to some more adequate value, e.g. 128 GB. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] s390: disable change bit overrideChristian Borntraeger2010-04-091-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6a985c6194017de2c062916ad1cd00dee0302c40 ([S390] s390: use change recording override for kernel mapping) deactivated the change bit recording for the kernel mapping to improve the performance. This works most of the time, but there are cases (e.g. kernel runs in home space, futex atomic compare xcmg) where we modify user memory with the kernel mapping instead of the user mapping. Instead of fixing these cases, this patch just deactivates change bit override to avoid future problems with other kernel code that might use the kernel mapping for user memory. CC: stable@kernel.org Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] fix io_return critical section cleanupMartin Schwidefsky2010-04-092-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a machine check interrupts the io interrupt handler on one of the instructions between io_return and io_leave the critical section cleanup code will move the return psw to io_work_loop. By doing that the switch from the asynchronous interrupt stack to the process stack is skipped. If e.g. TIF_NEED_RESCHED is set things break because the scheduler is called with the asynchronous interrupts stack. Moving the psw back to io_return instead fixes the problem. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] sclp_async: potential buffer overflowDan Carpenter2010-04-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "len" hasn't been properly range checked so we shouldn't use it as an array offset. This can only be written to by root but it would still be annoying to accidentally write more than 3 characters and corrupt your memory. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] arch/s390/kernel: Add missing unlockJulia Lawall2010-04-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the default case the lock is not unlocked. The return is converted to a goto, to share the unlock at the end of the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-04-0934-178/+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 ...
| * | | cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatchDivyesh Shah2010-04-091-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CFQ dispatches requests forcefully due to a barrier or changing iosched, it runs through all cfqq's dispatching requests and then expires each queue. However, it does not activate a cfqq before flushing its IOs resulting in using stale values for computing slice_used. This patch fixes it by calling activate queue before flushing reuqests from each queue. This is useful mostly for barrier requests because when the iosched is changing it really doesnt matter if we have incorrect accounting since we're going to break down all structures anyway. We also now expire the current timeslice before moving on with the dispatch to accurately account slice used for that cfqq. Signed-off-by: Divyesh Shah<dpshah@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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