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* Merge tag 'fixes-for-linus' of ↵Linus Torvalds2012-07-26
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "A mixed bag of fixes, some for merge window fallout (tegra, MXS), and a short series of fixes for marvell platforms that didn't make it in before 3.5." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: mxs: fix compile error caused by prom_update_property change ARM: dt: tegra trimslice: enable USB2 port ARM: dt: tegra trimslice: add vbus-gpio property ARM: vt8500: Add maintainer for VT8500 architecture ARM: Kirkwood: Replace mrvl with marvell ARM: Orion: fix driver probe error handling with respect to clk ARM: Dove: Fixup ge00 initialisation ARM: Kirkwood: Fix PHY disable clk problems ARM: Kirkwood: Ensure runit clock always ticks. ARM: versatile: Don't use platform clock for Integrator & VE ARM: tegra: harmony: add regulator supply name and its input supply
| * ARM: mxs: fix compile error caused by prom_update_property changeShawn Guo2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 475d009 (of: Improve prom_update_property() function) changed prom_update_property interface, and causes the compile error below. CC arch/arm/mach-mxs/mach-mxs.o arch/arm/mach-mxs/mach-mxs.c: In function ‘update_fec_mac_prop’: arch/arm/mach-mxs/mach-mxs.c:216:4: error: too many arguments to function ‘prom_update_property’ include/linux/of.h:263:12: note: declared here Update the caller update_fec_mac_prop to fix the error. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
| * ARM: dt: tegra trimslice: enable USB2 portStephen Warren2012-07-25
| | | | | | | | | | | | | | | | | | This was accidentally disabled by commit 2a5fdc9 "ARM: dt: tegra: invert status=disable vs status=okay". Cc: <stable@vger.kernel.org> # v3.5 (file is named tegra-trimslice.dts there) Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * ARM: dt: tegra trimslice: add vbus-gpio propertyStephen Warren2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On TrimSlice, Tegra's USB1 port may be routed to either an external micro USB port, or an internal USB->SATA bridge for SSD or HDD. This muxing is controlled by a GPIO. Whilst not strictly a VBUS GPIO, the TrimSlice board files caused this GPIO to be set appropriately to enable the SATA bridge by passing it as the VBUS GPIO to the USB driver. Echo this same configuration in device tree to enable the SATA bridge. An alternative might be to implement a full USB bus mux driver. However, that seems over-complex right now. Cc: <stable@vger.kernel.org> # v3.5 (file is named tegra-trimslice.dts there) Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixesArnd Bergmann2012-07-25
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From Andrew Lunn <andrew@lunn.ch>: * 'v3.5-rc7-fixes' of git://github.com/lunn/linux: ARM: Kirkwood: Replace mrvl with marvell ARM: Orion: fix driver probe error handling with respect to clk ARM: Dove: Fixup ge00 initialisation ARM: Kirkwood: Fix PHY disable clk problems ARM: Kirkwood: Ensure runit clock always ticks. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| | * ARM: Kirkwood: Replace mrvl with marvellAndrew Lunn2012-07-25
| | | | | | | | | | | | | | | | | | | | | It has been decided to use marvell, not mrvl, in the compatibility property. Search & replace. Signed-off-by: Andrew Lunn <andrew@lunn.ch>
| | * ARM: Dove: Fixup ge00 initialisationHannes Reinecke2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | The last argument of orion_ge00_init() is actually the error interrupt, so we should be using the correct value here. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
| | * ARM: Kirkwood: Fix PHY disable clk problemsSimon Baatz2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 98d9986 (ARM: Kirkwood: Replace clock gating) and the fix 5fb2ce (ARM: Kirkwood: clk_register_gate_fn: add fn assignment) introduced a custom variant of clock gating which allows to define a function to be called before gating the clock off. This is used to disable the SATA and PCIe PHYs if the respective clocks are unused after initialization. However, of these two drivers, the SATA driver may be compiled as a module. The driver re-enables the clocks at module init but the PHYs stay disabled. Since the custom clock gating disabled the PHYs when gating the clock off, it should also re-enable them when enabling the clock gate. This is done by adding a second function that may be used to enable the PHYs. Signed-off-by: Simon Baatz <gmbnomis@gmail.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
| | * ARM: Kirkwood: Ensure runit clock always ticks.Andrew Lunn2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Marvell engineers tell us: It seems that many units use the RUNIT clock. SPI, UART, NAND, TWSI, ... So it's not possible to clock gate it. Currently the SPI, NAND and TWSI driver will clk_prepaure_enable() this clk, but since we have no idea what ... is, and turning this clk off results in a hard lock, unconditionally enable runit. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Simon Baatz <gmbnomis@gmail.com>
| * | ARM: versatile: Don't use platform clock for Integrator & VEPawel Moll2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to automatic merge of a613163dff04cbfcb7d66b06ef4a5f65498ee59b "ARM: integrator: convert to common clock" and 56a34b03ff427046494db87f05fc810aaedd23a5 "ARM: versatile: Make plat-versatile clock optional" two platforms: Integrator and Versatile Express now select both COMMON_CLK and PLAT_VERSATILE_CLOCK which breaks building them. Fixed now. Signed-off-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | Merge branch 'master' of ↵Arnd Bergmann2012-07-25
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fixes The merge of the 'clk-for-linus' branch caused an automated merge failure. Pull that in here so we can fix the problem. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | ARM: tegra: harmony: add regulator supply name and its input supplyLaxman Dewangan2012-07-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Name the regulator as per board schematics and adds its supply name info in regulator data. Add the always on fixed regulator to refer the battery supply. Use this fixed regulator for input supply of some of PMIC regulator This patch was originally part of a 2-patch series. Patch 2 got applied to the regulator tree as 7c7fac3 "regulator: tps6586x: add support for input supply" without this patch. This broke regulator support on Harmony. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> [swarren: added dependency info to commit description] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2012-07-26
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc updates from David Miller: "Nothing much this merge window for sparc. 1) Fix FPU state management in sparc32, from Tkhai Kirill. 2) More sparc32 mm layer code cleanups, largely more side effects of the sun4c support removal in the 3.5 From Sam Ravnborg. 3) Remove unused code in sparc64, from Bjorn Helgaas and Kirill Tkhai. 4) Some declaration and comment tidies in PROM support code, from Geert Uytterhoeven." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: (24 commits) sparc32, copy_thread: Clear TIF_USEDFPU flag of created task instead of current sparc32: delete dead code in show_mem() sparc32: move kmap_init() to highmem.c sparc32: move probe_memory() to srmmu.c sparc32: drop unused BAD_PAGE stuff sparc32: centralize all mmu context handling in srmmu.c sparc32: drop quicklist sparc32: drop sparc model check in paging_init sparc32: drop sparc_unmapped_base sparc32,leon: drop leon_init() sparc32: drop fixmap.h sparc32: fixmap.h cleanup sparc32: drop unused kmap_atomic_to_page sparc32: drop swapper_pg_dir sparc32: beautify srmmu_inherit_prom_mappings() sparc32: use void * in nocache get/free sparc32: fix coding-style in srmmu.c sparc32: sort includes in srmmu.c sparc32: define a few srmmu functions __init sparc64: remove unused function straddles_64bit_va_hole() ...
| * | | | sparc32, copy_thread: Clear TIF_USEDFPU flag of created task instead of currentTkhai Kirill2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FPU state is saved into task_struct of created task. Current task continues use of the state, so it needs TIF_USEDFPU flag is not cleared. Created task receives fresh FPU and cleared TIF_USEFPU flag is required for it. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: delete dead code in show_mem()Sam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: move kmap_init() to highmem.cSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Try to keep highmem support in a more central place. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: move probe_memory() to srmmu.cSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only one user so move it to the file using it. It had nothing to do in fault_32. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop unused BAD_PAGE stuffSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: centralize all mmu context handling in srmmu.cSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop quicklistSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The quicklist stuff is not used anymore - drop it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop sparc model check in paging_initSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We already check the model in head_32.S so no need to repeat the check here Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop sparc_unmapped_baseSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The base is always the same so no need to use a variable for this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32,leon: drop leon_init()Sam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function was only used to set of_pdt_build_more to leon_node_init(). But the leon_node_init() was a nop as prom_amba_init was never assigned. Cc: Daniel Hellstrom <daniel@gaisler.com> Cc: Konrad Eisele <konrad@gaisler.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop fixmap.hSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sparc32 does not support fixmaps - so do not pretend so by having the fixmap.h file. Move relevant parts to vaddrs.h. I looked at simplifying this even more but failed to understand the reasoning behind the extra guard page involved and due to missing testing possibilities only the trivial conversion was done. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: fixmap.h cleanupSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove all unused stuff from fixmap.h It is only used for highmem - sparc32 has no fixmap support. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop unused kmap_atomic_to_pageSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No users left of this function - drop it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: drop swapper_pg_dirSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We save one page of RAM dropping swapper_pg_dir. It was only used for an assignment in init-mm.c and we redid this later in srmmu.c anyway. This is likely a left-over from the sun4c removal. To avoid a dummy variable we use a simple #define swapper_pg_dir NULL Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: beautify srmmu_inherit_prom_mappings()Sam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: use void * in nocache get/freeSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allowed to us to kill a lot of casts, with no loss of readability in any places Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: fix coding-style in srmmu.cSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the most annoying issues that distracts me: - whitespace - missing space after "if" and "while" - spaces around operators and similar simple things. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: sort includes in srmmu.cSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: define a few srmmu functions __initSam Ravnborg2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | They are only used during early init so lets get rid of them after init to save some RAM. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc64: remove unused function straddles_64bit_va_hole()Kirill Tkhai2012-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nobody uses straddles_64bit_va_hole(). Remove it Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc32: Remove superfluous extern declarations for prom_*() functionsGeert Uytterhoeven2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prom_meminit() and prom_ranges_init() are declared in <asm/oplib_32.h>. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc: Correct comments about prom_init() return valuesGeert Uytterhoeven2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prom_init() returns void. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc/PCI: remove unused pcibios_assign_resource() definitionBjorn Helgaas2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pcibios_assign_resource() isn't used anywhere; remove it. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sparc64: Consistently use fsrc2 rather than fmovd in optimized asm.David S. Miller2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because fsrc2, unlike fmovd, does not update the %fsr register. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | Merge tag 'gpio-for-v3.6' of ↵Linus Torvalds2012-07-26
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO changes from Linus Walleij: - New driver for AMD-8111 southbridge GPIOs - New driver for Wolfson Micro Arizona devices - Propagate device tree parse errors - Probe deferral finalizations - all expected calls to GPIO will now hopefully request deferral where apropriate - Misc updates to TCA6424, WM8994, LPC32xx, PCF857x, Samsung MXC, OMAP and PCA953X drivers. Fix up gpio_idx conflicts in drivers/gpio/gpio-mxc.c * tag 'gpio-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available gpiolib: Defer failed gpio requests by default MAINTAINERS: add entry OMAP GPIO driver gpio/pca953x: increase variables size to support 24 bit of data GPIO: PCA953X: Increase size of invert variable to support 24 bit gpio/omap: move bank->dbck initialization to omap_gpio_mod_init() gpio/mxc: use the edge_sel feature if available gpio: propagate of_parse_phandle_with_args errors gpio: samsung: add flags specifier to device-tree binding gpiolib: Add support for Wolfson Microelectronics Arizona class devices gpio: gpio-lpc32xx: Add gpio_to_irq mapping gpio: pcf857x: share 8/16 bit access functions gpio: LPC32xx: Driver cleanup MAINTAINERS: Add Wolfson gpiolib drivers to the Wolfson entry gpiolib: wm8994: Convert to devm_kzalloc() gpiolib: wm8994: Use irq_domain mappings for gpios gpio: add a driver for GPIO pins found on AMD-8111 south bridge chips gpio/tca6424: merge I2C transactions, remove cast gpio/of: fix a typo of comment message
| * | | | | gpio/mxc: use the edge_sel feature if availableBenoît Thébaudeau2012-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some mxc processors have an edge_sel feature, which allows the IRQ to be triggered by any edge. This patch makes use of this feature if available, which skips mxc_flip_edge(). Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Sascha Hauer <kernel@pengutronix.de> Cc: <linux-arm-kernel@lists.infradead.org> Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | | | | Merge branch 'stable' of ↵Linus Torvalds2012-07-26
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile PCI build fixes from Chris Metcalf: "This fixes a couple of issues with the pci_bus.subordinate removal from pci-next as it affected the tile architecture. One commit does the bombing for tilegx PCI (added during the merge window, so missed the pci-next bombing) and the other commit undoes a buggy part of the bombing for tilepro PCI." * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tilepro pci: fix pci_bus.subordinate bad bombing from b918c62e tilegx pci: fix semantic merge conflict with 3527ed81c
| * | | | | | tilepro pci: fix pci_bus.subordinate bad bombing from b918c62eChris Metcalf2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bombing to convert pci_bus.subordinate to busn_res.end accidentally modified a "struct pci_dev" site, causing this file not to compile. This commit reverts that code to use dev->subordinate again. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
| * | | | | | tilegx pci: fix semantic merge conflict with 3527ed81cChris Metcalf2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Yinghai Lu removed pci_bus.subordinate in pci-next, which meant that the tile-next changes to add tilegx PCI support don't build. This was expected (seen in linux-next) and this one-line fix is along the same lines as commit b918c62e for all other architectures. Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
* | | | | | | posix_types.h: Cleanup stale __NFDBITS and related definitionsJosh Boyer2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recently, glibc made a change to suppress sign-conversion warnings in FD_SET (glibc commit ceb9e56b3d1). This uncovered an issue with the kernel's definition of __NFDBITS if applications #include <linux/types.h> after including <sys/select.h>. A build failure would be seen when passing the -Werror=sign-compare and -D_FORTIFY_SOURCE=2 flags to gcc. It was suggested that the kernel should either match the glibc definition of __NFDBITS or remove that entirely. The current in-kernel uses of __NFDBITS can be replaced with BITS_PER_LONG, and there are no uses of the related __FDELT and __FDMASK defines. Given that, we'll continue the cleanup that was started with commit 8b3d1cda4f5f ("posix_types: Remove fd_set macros") and drop the remaining unused macros. Additionally, linux/time.h has similar macros defined that expand to nothing so we'll remove those at the same time. Reported-by: Jeff Law <law@redhat.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> CC: <stable@vger.kernel.org> Signed-off-by: Josh Boyer <jwboyer@redhat.com> [ .. and fix up whitespace as per akpm ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds2012-07-26
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/mm changes from Peter Anvin: "The big change here is the patchset by Alex Shi to use INVLPG to flush only the affected pages when we only need to flush a small page range. It also removes the special INVALIDATE_TLB_VECTOR interrupts (32 vectors!) and replace it with an ordinary IPI function call." Fix up trivial conflicts in arch/x86/include/asm/apic.h (added code next to changed line) * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tlb: Fix build warning and crash when building for !SMP x86/tlb: do flush_tlb_kernel_range by 'invlpg' x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR x86/tlb: enable tlb flush range support for x86 mm/mmu_gather: enable tlb flush range in generic mmu_gather x86/tlb: add tlb_flushall_shift knob into debugfs x86/tlb: add tlb_flushall_shift for specific CPU x86/tlb: fall back to flush all when meet a THP large page x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range x86/tlb_info: get last level TLB entry number of CPU x86: Add read_mostly declaration/definition to variables from smp.h x86: Define early read-mostly per-cpu macros
| * | | | | | | x86/tlb: Fix build warning and crash when building for !SMPAlex Shi2012-07-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The incompatible parameter of flush_tlb_mm_range cause build warning. Fix it by correct parameter. Ingo Molnar found that this could also cause a user space crash. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1342747103-19765-1-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86/tlb: do flush_tlb_kernel_range by 'invlpg'Alex Shi2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch do flush_tlb_kernel_range by 'invlpg'. The performance pay and gain was analyzed in previous patch (x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range). In the testing: http://lkml.org/lkml/2012/6/21/10 The pay is mostly covered by long kernel path, but the gain is still quite clear, memory access in user APP can increase 30+% when kernel execute this funtion. Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-10-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTORAlex Shi2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are 32 INVALIDATE_TLB_VECTOR now in kernel. That is quite big amount of vector in IDT. But it is still not enough, since modern x86 sever has more cpu number. That still causes heavy lock contention in TLB flushing. The patch using generic smp call function to replace it. That saved 32 vector number in IDT, and resolved the lock contention in TLB flushing on large system. In the NHM EX machine 4P * 8cores * HT = 64 CPUs, hackbench pthread has 3% performance increase. Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-9-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86/tlb: enable tlb flush range support for x86Alex Shi2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not every tlb_flush execution moment is really need to evacuate all TLB entries, like in munmap, just few 'invlpg' is better for whole process performance, since it leaves most of TLB entries for later accessing. This patch also rewrite flush_tlb_range for 2 purposes: 1, split it out to get flush_blt_mm_range function. 2, clean up to reduce line breaking, thanks for Borislav's input. My micro benchmark 'mummap' http://lkml.org/lkml/2012/5/17/59 show that the random memory access on other CPU has 0~50% speed up on a 2P * 4cores * HT NHM EP while do 'munmap'. Thanks Yongjie's testing on this patch: ------------- I used Linux 3.4-RC6 w/ and w/o his patches as Xen dom0 and guest kernel. After running two benchmarks in Xen HVM guest, I found his patches brought about 1%~3% performance gain in 'kernel build' and 'netperf' testing, though the performance gain was not very stable in 'kernel build' testing. Some detailed testing results are below. Testing Environment: Hardware: Romley-EP platform Xen version: latest upstream Linux kernel: 3.4-RC6 Guest vCPU number: 8 NIC: Intel 82599 (10GB bandwidth) In 'kernel build' testing in guest: Command line | performance gain make -j 4 | 3.81% make -j 8 | 0.37% make -j 16 | -0.52% In 'netperf' testing, we tested TCP_STREAM with default socket size 16384 byte as large packet and 64 byte as small packet. I used several clients to add networking pressure, then 'netperf' server automatically generated several threads to response them. I also used large-size packet and small-size packet in the testing. Packet size | Thread number | performance gain 16384 bytes | 4 | 0.02% 16384 bytes | 8 | 2.21% 16384 bytes | 16 | 2.04% 64 bytes | 4 | 1.07% 64 bytes | 8 | 3.31% 64 bytes | 16 | 0.71% Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-8-git-send-email-alex.shi@intel.com Tested-by: Ren, Yongjie <yongjie.ren@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86/tlb: add tlb_flushall_shift knob into debugfsAlex Shi2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel will replace cr3 rewrite with invlpg when tlb_flush_entries <= active_tlb_entries / 2^tlb_flushall_factor if tlb_flushall_factor is -1, kernel won't do this replacement. User can modify its value according to specific CPU/applications. Thanks for Borislav providing the help message of CONFIG_DEBUG_TLBFLUSH. Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-6-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86/tlb: add tlb_flushall_shift for specific CPUAlex Shi2012-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Testing show different CPU type(micro architectures and NUMA mode) has different balance points between the TLB flush all and multiple invlpg. And there also has cases the tlb flush change has no any help. This patch give a interface to let x86 vendor developers have a chance to set different shift for different CPU type. like some machine in my hands, balance points is 16 entries on Romely-EP; while it is at 8 entries on Bloomfield NHM-EP; and is 256 on IVB mobile CPU. but on model 15 core2 Xeon using invlpg has nothing help. For untested machine, do a conservative optimization, same as NHM CPU. Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-5-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-28 14:51:05 -0500