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2010-03-30x86: don't include slab.h from arch/x86/include/asm/pgtable_32.hTejun Heo1-1/+0
Including slab.h from x86 pgtable_32.h creates a troublesome dependency chain w/ ftrace enabled. The following chain leads to inclusion of pgtable_32.h from define_trace.h. trace/define_trace.h trace/ftrace.h linux/ftrace_event.h linux/ring_buffer.h linux/mm.h asm/pgtable.h asm/pgtable_32.h slab.h itself defines trace hooks via linux/sl[aou]b_def.h linux/kmemtrace.h trace/events/kmem.h If slab.h is not included before define_trace.h is included, this leads to duplicate definitions of kmemtrace hooks or other include dependency problems. pgtable_32.h doesn't need slab.h to begin with. Don't include it from there. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com>
2010-03-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds5-13/+13
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Properly truncate pt_regs framepointer in perf callback. arch/sparc/kernel: Use set_cpus_allowed_ptr sparc: Fix use of uid16_t and gid16_t in asm/stat.h
2010-03-30sparc64: Properly truncate pt_regs framepointer in perf callback.David S. Miller1-1/+1
For 32-bit processes, we save the full 64-bits of the regs in pt_regs. But unlike when the userspace actually does load and store instructions, the top 32-bits don't get automatically truncated by the cpu in kernel mode (because the kernel doesn't execute with PSTATE_AM address masking enabled). So we have to do it by hand. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-29frv/chris: fix lines with a missing semicolonsDavid Howells2-2/+2
Commit b26b2d494b659f9 ("resource/PCI: align functions now return start of resource") added lines with missing semicolons. Add the missing semicolons to the FRV and CRIS arch code. Signed-off-by: David Howells <dhowells@redhat.com> Cc: linux@dominikbrodowski.net Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-28arch/sparc/kernel: Use set_cpus_allowed_ptrJulia Lawall3-10/+10
Use set_cpus_allowed_ptr rather than set_cpus_allowed. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1,E2; @@ - set_cpus_allowed(E1, cpumask_of_cpu(E2)) + set_cpus_allowed_ptr(E1, cpumask_of(E2)) @@ expression E; identifier I; @@ - set_cpus_allowed(E, I) + set_cpus_allowed_ptr(E, &I) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-27sparc: Fix use of uid16_t and gid16_t in asm/stat.hRob Landley1-2/+2
Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-27Merge branch 'for-linus' of ↵Linus Torvalds3-12/+19
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1 x86/PCI: for host bridge address space collisions, show conflicting resource frv/PCI: remove redundant warnings x86/PCI: remove redundant warnings PCI: don't say we claimed a resource if we failed PCI quirk: Disable MSI on VIA K8T890 systems PCI quirk: RS780/RS880: work around missing MSI initialization PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present PCI: complain about devices that seem to be broken PCI: print resources consistently with %pR PCI: make disabled window printk style match the enabled ones PCI: break out primary/secondary/subordinate for readability PCI: for address space collisions, show conflicting resource resources: add interfaces that return conflict information PCI: cleanup error return for pcix get and set mmrbc functions PCI: fix access of PCI_X_CMD by pcix get and set mmrbc functions PCI: kill off pci_register_set_vga_state() symbol export. PCI: fix return value from pcix_get_max_mmrbc()
2010-03-27Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds7-12/+61
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, amd: Restrict usage of c1e_idle() x86: Fix placement of FIX_OHCI1394_BASE x86: Handle legacy PIC interrupts on all the cpu's
2010-03-27Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2-0/+30
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: powerpc/perf_events: Fix call-graph recording, add perf_arch_fetch_caller_regs perf top: Add missing initialization to zero perf probe: Use original address instead of CU-based address perf probe: Fix offset to allow signed value perf top: Improve the autosizing of column lenghts perf probe: Fix need_dwarf flag if lazy matching is used perf probe: Fix probe_point buffer overrun
2010-03-25x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1Bjorn Helgaas1-1/+12
Yanko's GA-MA78GM-S2H (BIOS F11) reports the following resource in a PCI host bridge _CRS: [07] 32-Bit DWORD Address Space Resource Min Relocatability : MinFixed Max Relocatability : MaxFixed Address Minimum : CFF00000 (_MIN) Address Maximum : FEBFFFFF (_MAX) Address Length : 3EE10000 (_LEN) This is invalid per spec (ACPI 4.0, 6.4.3.5) because it's a fixed size, fixed location descriptor, but _LEN != _MAX - _MIN + 1. Based on https://bugzilla.kernel.org/show_bug.cgi?id=15480#c15, I think Windows handles this by truncating the window so it fits between _MIN and _MAX. I also verified this by modifying the SeaBIOS DSDT and booting Windows 2008 R2 with qemu. This patch makes Linux truncate the window, too, which fixes: http://bugzilla.kernel.org/show_bug.cgi?id=15480 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Tested-by: Yanko Kaneti <yaneti@declera.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-25x86/PCI: for host bridge address space collisions, show conflicting resourceBjorn Helgaas1-3/+6
With insert_resource_conflict(), we can learn what the actual conflict is, so print that info for debugging purposes. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-25frv/PCI: remove redundant warningsBjorn Helgaas1-3/+1
pci_claim_resource() already prints more detailed error messages, so these are really redundant. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-25x86/PCI: remove redundant warningsBjorn Helgaas1-5/+0
pci_claim_resource() already prints more detailed error messages, so these are really redundant. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-25Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds11-31/+102
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Orion5x: replace KEY_WLAN with KEY_WPS_BUTTON [ARM] Kirkwood: WPS button keycode mapping pxa168fb: fix incorrect resource calculation [ARM] pxa/raumfeld: fix button name [ARM] pxa/raumfeld: remove duplicated #include [ARM] locomo: fix unpaired spin_lock_irqsave [ARM] locomo: fix SPI register offset [ARM] pxa/sharpsl: add dependency of max1111 driver to sharpsl_pm [ARM] pxa: remove unnecessary 'select FB_W100' from some platforms [ARM] pxa: remove spi cs gpio direction to avoid clash with driver [ARM] mmp: fix for variables in uncompress.h being discarded [ARM] pxa: fix for variables in uncompress.h being discarded ARM: Update mach-types ARM: Fix IXP23xx build error in mach/memory.h
2010-03-25Merge branch 'sh/for-2.6.34' of ↵Linus Torvalds11-18/+42
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Silence unintialized variable warnings in dwarf unwinder. sh: Tidy up a couple of section mismatches. sh: Fix build after dynamic PMB rework sh: Replace unsafe manipulation of MMUCR sh: Flush ITLB too in PTEAEX's flush_tlb_page() sh64: Remove long unused mid_sched macro SH: remove superfluous warning from the serial driver SH: fix SCIFA SCASCR register bit definitions serial: sh-sci: fix SH-Mobile SH breakage sh: Add watch-dog register address for SH7722/SH7723/SH7724 sh: ms7724: Add tiny-document for sound sh: mach-ecovec24: Add i2c_put_adapter on sh_eth_init
2010-03-24[S390] fix boot failures with compressed kernelsMartin Schwidefsky3-6/+7
Fix two bugs with the kernel image compression: 1) reset the bss section of the compressed vmlinux 2) clear the high half of the registers for 64 bit early enough for the decompression step Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-03-24[S390] system.h: Fix compile error for 1 and 2 byte cmpxchgChristian Borntraeger1-4/+4
commit 024914477e15ef8b17f271ec47f1bb8a589f0806 "memcg: move charges of anonymous swap" revealed that the 1 byte and 2 byte cmpxchg is currently broken: arch/s390/include/asm/system.h: Assembler messages: arch/s390/include/asm/system.h:241: Error: junk at end of line: `(%r5)' make[1]: *** [mm/page_cgroup.o] Error 1 make[1]: *** Waiting for unfinished jobs.... It turned out that commit 987bcdacb18a3adc2a48d85c9b005069c2f4dd7b ([S390] use inline assembly contraints available with gcc 3.3.3) broke the inline assembly. The or operands are now in constraint 3 and 4 instead of 2 and 3. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-03-24[S390] smp: fix lowcore allocationHeiko Carstens1-2/+2
The intermediate lowcore for CONFIG_SMP is allocated using a call to __alloc_bootmem() with a goal of 0. That however doesn't guarantee that the allocated piece of memory is below 2GB. Instead we should call __alloc_bootmem_low(). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-03-24[S390] zcore: CPU registers are not saved under LPARMichael Holzheu3-3/+30
To save the registers for all CPUs a sigp "store status" is done that stores the registers to address absolute zero. To access storage at absolute zero, normally the address of the prefix register of the accessing CPU has to be used. This does not work when large pages are active (currently only under LPAR). In order to fix that problem, instead of memcpy memcpy_real is used, which switches to real mode where prefixing works. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-03-23[ARM] Orion5x: replace KEY_WLAN with KEY_WPS_BUTTONChristian Lamparter1-1/+1
"Input: add KEY_WPS_BUTTON definition" introduced a generic keycode for WPS input events. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
2010-03-23[ARM] Kirkwood: WPS button keycode mappingChristian Lamparter1-2/+2
Commit "Input: add KEY_WPS_BUTTON definition" added a generic keycode for WPS button. Let's use it, instead of "F1" mapping. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
2010-03-23Merge branch 'fix' of ↵Russell King7-25/+25
git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
2010-03-23sh: Silence unintialized variable warnings in dwarf unwinder.Paul Mundt1-2/+2
The parent rb_node needs to be initialized to shut up the compiler, even though we're unlikely to ever hit this issue at run time. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: Tidy up a couple of section mismatches.Paul Mundt2-2/+2
select_idle_routine() and register_sh_pmu() both needed their annotations fixed up to silence section mismatch warnings. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: Fix build after dynamic PMB reworkMatt Fleming1-0/+2
set_pmb_entry() is now only used by a function that is wrapped in #ifdef CONFIG_PM, so wrap set_pmb_entry() in CONFIG_PM too. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: Replace unsafe manipulation of MMUCRMatt Fleming2-7/+16
Setting the TI in MMUCR causes all the TLB bits in MMUCR to be cleared. Unfortunately, the TLB wired bits are also cleared when setting the TI bit, causing any wired TLB entries to become unwired. Use local_flush_tlb_all() which implements TLB flushing in a safer manner by using the memory-mapped TLB registers. As each CPU has its own PMB the modifications in pmb_init() only affect the local CPU, so only flush the local CPU's TLB. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: Flush ITLB too in PTEAEX's flush_tlb_page()Matt Fleming2-0/+4
flush_tlb_page() can be used to flush TLB entries that map executable pages. Therefore, we need to ensure that the ITLB is also flushed in local_flush_tlb_page(). Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh64: Remove long unused mid_sched macroAndreas Bombe1-7/+0
interruptible_sleep_on() is referenced for use in the mid_sched macro which is not used anywhere. Remove reference and macro as well as the comment which appears to belong with them. Signed-off-by: Andreas Bombe <aeb@debian.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: Add watch-dog register address for SH7722/SH7723/SH7724Kuninori Morimoto1-0/+6
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: ms7724: Add tiny-document for soundKuninori Morimoto1-0/+8
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-23sh: mach-ecovec24: Add i2c_put_adapter on sh_eth_initKuninori Morimoto1-0/+2
i2c_put_adapter is needed after i2c_get_adapter Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-22x86 / perf: Fix suspend to RAM on HP nx6325Rafael J. Wysocki1-3/+5
Commit 3f6da3905398826d85731247e7fbcf53400c18bd (perf: Rework and fix the arch CPU-hotplug hooks) broke suspend to RAM on my HP nx6325 (and most likely on other AMD-based boxes too) by allowing amd_pmu_cpu_offline() to be executed for CPUs that are going offline as part of the suspend process. The problem is that cpuhw->amd_nb may be NULL already, so the function should make sure it's not NULL before accessing the object pointed to by it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-22[ARM] pxa/raumfeld: fix button nameDaniel Mack1-1/+1
This fixes a warning when booting 2.6.34-rc2: [ 26.619814] ------------[ cut here ]------------ [ 26.624604] WARNING: at fs/proc/generic.c:316 __xlate_proc_name+0xac/0xc0() [ 26.631555] name 'on/off button' [ 26.634753] Modules linked in: Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Sven Neumann <s.neumann@raumfeld.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] pxa/raumfeld: remove duplicated #includeHuang Weiyi1-2/+0
Remove duplicated #include('s) in arch/arm/mach-pxa/raumfeld.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] locomo: fix unpaired spin_lock_irqsaveH Hartley Sweeten1-3/+3
The function locomo_m62332_senddata sends a three byte i2c message to a M62332 DAC. This entire function is guarded with a spin_lock_irqsave at the start of the function and a spin_unlock_irqrestore at the end. As each byte is transferred, the i2c ACK from the DAC is checked. Currently, if the ACK is missing the function simply returns without the unlock. It also leaves the i2c bus in an invalid state since the last byte transferred did not have a "stop" condition and leave the bus idle. Fix this by adding an exit path using goto. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] locomo: fix SPI register offsetH Hartley Sweeten1-2/+2
The locomo spi registers are all defined in locomo.h as offsets from the first spi register LOCOMO_SPI (0x60), which is itself an offset from the locomo base address. To correctly access these registers LOCOMO_SPI must always be included in the address calculation. There are two places in locomo.c where this is not done. The first one, in locomo_suspend, actually results in a write to LOCOMO_ST instead of LOCOMO_SPICT. The second is in __locomo_probe and results in a write to LOCOMO_MCSX2 instead of LOCOMO_SPIIE. Fix these by including LOCOMO_SPI in the calculation. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] pxa/sharpsl: add dependency of max1111 driver to sharpsl_pmEric Miao1-0/+7
sharpsl_pm.c actually depends on max1111 driver being built-in when not using legacy ssp code. Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] pxa: remove unnecessary 'select FB_W100' from some platformsEric Miao1-4/+0
Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] pxa: remove spi cs gpio direction to avoid clash with driverJonathan Cameron2-9/+0
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] mmp: fix for variables in uncompress.h being discardedEric Miao1-1/+4
Due to commit: 5de813b ARM: Eliminate decompressor -Dstatic= PIC hack The data section will be discarded for the decompressor, thus move the static variables into BSS section by initializing them at run time. Reported-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-22[ARM] pxa: fix for variables in uncompress.h being discardedJonathan Cameron1-3/+8
Due to commit: 5de813b ARM: Eliminate decompressor -Dstatic= PIC hack The data section will be discarded for the decompressor, thus move the static variables into BSS section by initializing them at run time. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-03-20ARM: Update mach-typesRussell King1-2/+73
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-20ARM: Fix IXP23xx build error in mach/memory.hRussell King1-1/+1
One to many close parens. In file included from arch/arm/include/asm/page.h:202, from include/linux/mm_types.h:15, from include/linux/sched.h:63, from arch/arm/kernel/asm-offsets.c:13: arch/arm/include/asm/memory.h: In function 'virt_to_bus': arch/arm/include/asm/memory.h:214: error: expected ';' before ')' token arch/arm/include/asm/memory.h:214: error: expected statement before ')' token arch/arm/include/asm/memory.h: In function 'bus_to_virt': arch/arm/include/asm/memory.h:219: error: expected ';' before ')' token arch/arm/include/asm/memory.h:219: error: expected statement before ')' token Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2-0/+16
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: serial: sh-sci: remove duplicated #include sh: Export uncached helper symbols. sh: Fix up NUMA build for 29-bit. serial: sh-sci: Fix build failure for non-sh architectures. sh: Fix up uncached offset for legacy 29-bit mode. sh: Support CPU affinity masks for INTC controllers.
2010-03-20x86, amd: Restrict usage of c1e_idle()Andreas Herrmann2-8/+26
Currently c1e_idle returns true for all CPUs greater than or equal to family 0xf model 0x40. This covers too many CPUs. Meanwhile a respective erratum for the underlying problem was filed (#400). This patch adds the logic to check whether erratum #400 applies to a given CPU. Especially for CPUs where SMI/HW triggered C1e is not supported, c1e_idle() doesn't need to be used. We can check this by looking at the respective OSVW bit for erratum #400. Cc: <stable@kernel.org> # .32.x .33.x Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> LKML-Reference: <20100319110922.GA19614@alberich.amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-03-19Merge branch 'for-linus' of ↵Linus Torvalds7-13/+5
git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6: alpha: fix compile errors in dma-mapping-common.h alpha: remove trailing spaces in messages alpha: use __ratelimit
2010-03-19Merge branch 'merge' of ↵Linus Torvalds8-40/+17
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: Remove IOMMU_VMERGE config option powerpc: Fix swiotlb to respect the boot option powerpc: Do not call prink when CONFIG_PRINTK is not defined powerpc: Use correct ccr bit for syscall error status powerpc/fsl-booke: Get coherent bit from PTE powerpc/85xx: Make sure lwarx hint isn't set on ppc32
2010-03-19powerpc: Remove IOMMU_VMERGE config optionFUJITA Tomonori2-19/+1
The description says: Cause IO segments sent to a device for DMA to be merged virtually by the IOMMU when they happen to have been allocated contiguously. This doesn't add pressure to the IOMMU allocator. However, some drivers don't support getting large merged segments coming back from *_map_sg(). Most drivers don't have this problem; it is safe to say Y here. It's out of date. Long ago, drivers didn't have a way to tell IOMMUs about their segment length limit (that is, the maximum segment length that they can handle). So IOMMUs merged as many segments as possible and gave too large segments to drivers. dma_get_max_seg_size() was introduced to solve the above problem. Device drives can use the API to tell IOMMU about the maximum segment length that they can handle. In addition, the default limit (64K) should be safe for everyone. So this config option seems to be unnecessary. Note that this config option just enables users to disable the virtual merging by default. Users can still disable the virtual merging by the boot parameter. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-03-19powerpc: Fix swiotlb to respect the boot optionFUJITA Tomonori3-12/+6
powerpc initializes swiotlb before parsing the kernel boot options so swiotlb options (e.g. specifying the swiotlb buffer size) are ignored. Any time before freeing bootmem works for swiotlb so this patch moves powerpc's swiotlb initialization after parsing the kernel boot options, mem_init (as x86 does). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: Becky Bruce <beckyb@kernel.crashing.org> Tested-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-03-19powerpc: Do not call prink when CONFIG_PRINTK is not definedMárton Németh1-0/+4
When printk() is disabled (CONFIG_PRINTK) at menu item General setup -> Configure standard kernel features (for small systems) -> Enable support for printk then there should be no printk() calls at all. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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