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2012-10-17perf python: Link with libtraceeventArnaldo Carvalho de Melo
The evsel methods to read tracepoint fields uses libtraceevent functions, becoming needed by the python binding as well. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-j3o4v7jyvp9ke9n230l96a1m@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-17perf python: Initialize 'page_size' variableArnaldo Carvalho de Melo
The commit 0c1fe6b: 'perf tools: Have the page size value available for all tools' Broke the python binding because the global variable 'page_size' is initialized on the main() routine, that is not called when using just the python binding, causing evlist.mmap() to fail because it expects that variable to be initialized to the system's page size. Fix it by initializing it on the binding init routine. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vrvp3azmbfzexnpmkhmvtzzc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-17NLM: nlm_lookup_file() may return NLMv4-specific error codesTrond Myklebust
If the filehandle is stale, or open access is denied for some reason, nlm_fopen() may return one of the NLMv4-specific error codes nlm4_stale_fh or nlm4_failed. These get passed right through nlm_lookup_file(), and so when nlmsvc_retrieve_args() calls the latter, it needs to filter the result through the cast_status() machinery. Failure to do so, will trigger the BUG_ON() in encode_nlm_stat... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Reported-by: Larry McVoy <lm@bitmover.com> Cc: stable@kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-10-17ARM: s3c: mark s3c2440_clk_add as __init_refokArnd Bergmann
s3c2440_clk_add is a subsys_interface method and calls clkdev_add_table, which is marked as __init. The modpost script complains about this because we must not call an __init function from a function in the .text section, and we cannot reference an __init function from a subsys_interface pointer. I have verified that the only code path into s3c2440_clk_add() is from "int __init s3c2440_init(void)", so s3c2440_clk_add can be marked __init_refok instead. Without this patch, building mini2440_defconfig results in: WARNING: vmlinux.o(.text+0x9848): Section mismatch in reference from the function s3c2440_clk_add() to the function .init.text:clkdev_add_table() The function s3c2440_clk_add() references the function __init clkdev_add_table(). This is often because s3c2440_clk_add lacks a __init annotation or the annotation of clkdev_add_table is wrong. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Turquette <mturquette@linaro.org> Cc: Ben Dooks <ben-linux@fluff.org>
2012-10-17spi/s3c64xx: use correct dma_transfer_direction typeArnd Bergmann
There is a subtle difference between dma_transfer_direction and dma_data_direction: the former is used by the dmaengine framework, while the latter is used by the dma-mapping API. Although the purpose is comparable, the actual values are different and must not be mixed. In this case, the driver just wants to use dma_transfer_direction. Without this patch, building s3c6400_defconfig results in: drivers/spi/spi-s3c64xx.c: In function 's3c64xx_spi_dmacb': drivers/spi/spi-s3c64xx.c:239:21: warning: comparison between 'enum dma_data_direction' and 'enum dma_transfer_direction' [-Wenum-compare] As pointed out by Kukjin Kim, this also changes the use of constants from DMA_FROM_DEVICE/DMA_TO_DEVICE to DMA_DEV_TO_MEM/DMA_MEM_TO_DEV. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: spi-devel-general@lists.sourceforge.net
2012-10-17DocBook/media/Makefile: Fix build due to uapi breakageMauro Carvalho Chehab
The uapi changeset forgot to fix the header locations, needed for the DocBook specs. Fix it. Cc: David Howells <dhowells@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-17UAPI: (Scripted) Disintegrate include/linux/dvbDavid Howells
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-17Merge tag 'v3.7-rc1' into staging/for_v3.8Mauro Carvalho Chehab
Linux 3.7-rc1 * tag 'v3.7-rc1': (9579 commits) Linux 3.7-rc1 x86, boot: Explicitly include autoconf.h for hostprogs perf: Fix UAPI fallout ARM: config: make sure that platforms are ordered by option string ARM: config: sort select statements alphanumerically UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h perf: Handle new rbtree implementation procfs: don't need a PATH_MAX allocation to hold a string representation of an int vfs: embed struct filename inside of names_cache allocation if possible audit: make audit_inode take struct filename vfs: make path_openat take a struct filename pointer vfs: turn do_path_lookup into wrapper around struct filename variant audit: allow audit code to satisfy getname requests from its names_list vfs: define struct filename and have getname() return it btrfs: Fix compilation with user namespace support enabled userns: Fix posix_acl_file_xattr_userns gid conversion userns: Properly print bluetooth socket uids ...
2012-10-17Merge tag 'asoc-3.7' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v3.7 Nothing too exciting except for the ams-delta change which is relatively lerge due to the fact that the driver loading had been totally broken as the driver needed a newer API to function.
2012-10-17UAPI: Make arch/sparc/include/uapi/asm/sigcontext.h non-emptyDavid Howells
arch/sparc/include/uapi/asm/sigcontext.h was emitted by the UAPI disintegration script as an empty file because the parent file had no UAPI stuff in it, despite being marked with "header-y". Unfortunately, the patch program deletes resultant empty files when applying a kernel patch. So just stick a comment in there as a placeholder. Signed-off-by: David Howells <dhowells@redhat.com> cc: David S. Miller <davem@davemloft.net> cc: sparclinux@vger.kernel.org
2012-10-17UAPI: Make arch/sh/include/uapi/asm/hw_breakpoint.h non-emptyDavid Howells
arch/sh/include/uapi/asm/hw_breakpoint.h was emitted by the UAPI disintegration script as an empty file because the parent file had no UAPI stuff in it, despite being marked with "header-y". Unfortunately, the patch program deletes resultant empty files when applying a kernel patch. So just stick a comment in there as a placeholder. Signed-off-by: David Howells <dhowells@redhat.com> cc: Paul Mundt <lethal@linux-sh.org> cc: linux-sh@vger.kernel.org
2012-10-17UAPI: Make arch/mn10300/include/uapi/asm/setup.h non-emptyDavid Howells
arch/mn10300/include/uapi/asm/setup.h was emitted by the UAPI disintegration script as an empty file because the parent file had no UAPI stuff in it, despite being marked with "header-y". Unfortunately, the patch program deletes resultant empty files when applying a kernel patch. So just stick a comment in there as a placeholder. Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-17UAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from archesDavid Howells
Make uapi/asm-generic/kvm_para.h non-empty by addition of a comment to stop the patch program from deleting it when it creates it. Then delete empty arch-specific uapi/asm/kvm_para.h files and tell the Kbuild files to use the generic instead. Should this perhaps instead be a #warning or #error that the facility is unsupported on this arch? Signed-off-by: David Howells <dhowells@redhat.com> cc: Arnd Bergmann <arnd@arndb.de> cc: Avi Kivity <avi@redhat.com> cc: Marcelo Tosatti <mtosatti@redhat.com> cc: kvm@vger.kernel.org
2012-10-17UAPI: The tile arch uses the generic ucontext.h fileDavid Howells
Move the header-y and generic-y lines for ucontext.h from arch/tile/include/asm/Kbuild to the uapi/ Kbuild as the asm-generic variant is used. Signed-off-by: David Howells <dhowells@redhat.com> cc: Chris Metcalf <cmetcalf@tilera.com>
2012-10-17UAPI: Place comments in empty arch Kbuilds to make them non-emptyDavid Howells
Place comments in: arch/mips/include/asm/Kbuild arch/tile/include/arch/Kbuild to make them non-empty so that the patch program doesn't remove them when it reduces them to nothing. Possibly they should be just deleted, but it's possible that they'll acquire generic-y or genhdr-y lines in future, so I'm keeping them around for the moment. Note that MIPS will compile happily if the file is deleted instead. I haven't tested TILE, but I suspect it will be the same there. Signed-off-by: David Howells <dhowells@redhat.com> cc: Ralf Baechle <ralf@linux-mips.org> cc: Chris Metcalf <cmetcalf@tilera.com>
2012-10-17UAPI: Remove empty non-UAPI Kbuild filesDavid Howells
Remove non-UAPI Kbuild files that have become empty as a result of UAPI disintegration. They used to have only header-y lines in them and those have now moved to the Kbuild files in the corresponding uapi/ directories. Possibly these should not be removed but rather have a comment inserted to say they are intentionally left blank. This would make it easier to add generated header lines in future without having to restore the infrastructure. Note that at this point not all the UAPI disintegration parts have been merged, so it is likely that more empty Kbuild files will turn up. It is probably necessary to make the files non-empty to prevent the patch program from automatically deleting them when it reduces them to nothing. Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-17UAPI: Remove empty conditionals from include/linux/KbuildDavid Howells
Remove empty conditionals from include/linux/Kbuild as the contents, with new conditionals, have moved to include/uapi/linux/Kbuild. Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-17UAPI: Make uapi/linux/irqnr.h non-emptyDavid Howells
uapi/linux/irqnr.h was emitted by the UAPI disintegration script as an empty file because the parent linux/irqnr.h had no UAPI stuff in it, despite being marked with "header-y". Unfortunately, the patch program deletes the empty file when applying a kernel patch. It's not clear why this file is part of the UAPI at all. Looking in: /usr/include/linux/irqnr.h there's nothing there but a header reinclusion guard and a comment. So just stick a comment in there as a placeholder. Without this, if the kernel is fabricated from, say, a tarball and a patch, you can get this error when building x86_64 or usermode Linux (and probably others): include/linux/irqnr.h:4:30: fatal error: uapi/linux/irqnr.h: No such file or directory Reported-by: Randy Dunlap <rdunlap@xenotime.net> Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: Randy Dunlap <rdunlap@xenotime.net> cc: Alessandro Suardi <alessandro.suardi@gmail.com>
2012-10-17uapi: Allow automatic generation of uapi/asm/ header filesCatalin Marinas
Several arch/*/include/uapi/asm/* header simply include the corresponding <asm-generic/*> file. This patch allows such files to be specified in uapi/asm/Kbuild via "generic-y += ..." to be automatically generated (similar to asm/Kbuild). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: David Howells <dhowells@redhat.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de>
2012-10-17ALSA: hda - Always check array bounds in alc_get_line_out_pfxDavid Henningsson
Even when CONFIG_SND_DEBUG is not enabled, we don't want to return an arbitrary memory location when the channel count is larger than we expected. Cc: stable@kernel.org Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-10-17ASoC: bells: Correct typo in sub speaker DAI name for WM5110Mark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-16Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-shLinus Torvalds
Pull SuperH updates from Paul Mundt. The bulk of this is the UAPI disintegration for SH. * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: sh: Fix up more fallout from pointless ARM __iomem churn. sh: Wire up kcmp syscall. UAPI: (Scripted) Disintegrate arch/sh/include/asm
2012-10-16Merge branch 'frv' (FRV patches from David Howells)Linus Torvalds
Merge emailed FRV fixes from David Howells. * frv: FRV: Fix linux/elf-fdpic.h FRV: Fix const sections change FRV: Fix incorrect symbol in copy_thread() FRV: Fix VLIW packing constraint violation in entry.S
2012-10-16FRV: Fix linux/elf-fdpic.hDavid Howells
It seems I accidentally switched the guard on linux/elf-fdpic.h from #ifdef __KERNEL__ to #ifndef __KERNEL__ when attempting to expand the guarded region to cover the elf_fdpic_params struct when doing the UAPI split - with the result that the struct became unavailable to kernel code. Move incorrectly guarded bits back to the kernelspace header. Whilst we're at it, the __KERNEL__ guards can be deleted as they're no longer necessary. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: David Howells <dhowells@redhat.com> cc: Fengguang Wu <fengguang.wu@intel.com> cc: Lars-Peter Clausen <lars@metafoo.de> cc: uclinux-dev@uclinux.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16FRV: Fix const sections changeAndi Kleen
Add __pminitconst to fix the build, otherwise the following error can occur: arch/frv/kernel/setup.c:187:47: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token arch/frv/kernel/setup.c:386:2: error: 'clock_cmodes' undeclared (first use in this function) arch/frv/kernel/setup.c:571:6: error: 'clock_cmodes' undeclared (first use in this function) make[2]: *** [arch/frv/kernel/setup.o] Error 1 http://kisskb.ellerman.id.au/kisskb/buildresult/7344691/ Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16FRV: Fix incorrect symbol in copy_thread()David Howells
Fix an incorrect symbol in copy_thread(): arch/frv/kernel/process.c: In function 'copy_thread': arch/frv/kernel/process.c:197: error: 'chilregs' undeclared (first use in this function) arch/frv/kernel/process.c:197: error: (Each undeclared identifier is reported only once arch/frv/kernel/process.c:197: error: for each function it appears in.) Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16FRV: Fix VLIW packing constraint violation in entry.SDavid Howells
Fix VLIW packing constraint violation in entry.S: arch/frv/kernel/entry.S: Assembler messages: arch/frv/kernel/entry.S:871: Error: VLIW packing constraint violation When packing CALLL with OR, CALLL must go in the first slot. The instructions are executed simultaneously, so it doesn't matter which way round they're packed from that point of view. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16printk: Fix scheduling-while-atomic problem in console_cpu_notify()Paul E. McKenney
The console_cpu_notify() function runs with interrupts disabled in the CPU_DYING case. It therefore cannot block, for example, as will happen when it calls console_lock(). Therefore, remove the CPU_DYING leg of the switch statement to avoid this problem. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Fixes for i915, nouveau and radeon: - i915: haswell stability, modeset rework fallout, ums fix - nouveau: misc fixes from code rework - radeon: pll rework fixes, more 2 level PTE cleanups. - core: warning fixes on 32-bit." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits) nouveau: fix warning on 32-bit build. drm/nouveau/bios: fix typo in error message drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP drm/nv50/fb: fix double free of vram mm drm/nouveau/pm: do not stop reclocking if failing to set the fan speed drm/nouveau/pm: fix a typo related to the move to the therm subdev drm/nouveau/hwmon: fix the initialization condition drm: fix warning on 32-bit. drm: radeon: fix printk format warning drm/radeon: fix spelling typos in debugging output drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy(). drm/radeon: check if pcie gen 2 is already enabled (v2) drm/radeon/cayman: set VM max pfn at MC init drm/radeon: separate pt alloc from lru add drm/radeon: don't add the IB pool to all VMs v2 drm/radeon: allocate page tables on demand v4 drm/radeon: update comments to clarify VM setup (v2) drm/radeon: allocate PPLLs from low to high drm/radeon: fix compilation with backlight disabled drm/radeon: use %zu for formatting size_t ...
2012-10-16Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2, ext3, quota fixes from Jan Kara: "Fix three regressions caused by user namespace conversions (ext2, ext3, quota) and minor ext3 fix and cleanup." * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: quota: Silence warning about PRJQUOTA not being handled in need_print_warning() ext3: fix return values on parse_options() failure ext2: fix return values on parse_options() failure ext3: ext3_bread usage audit ext3: fix possible non-initialized variable on htree_dirblock_to_tree()
2012-10-16Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs fixes from Al Viro: "Fix for my braino in replace_fd(), dhowell's fix for the fallout from over-enthusiastic bo^Wdeclaration movements plus crapectomy that should've happened a long time ago (SEL_... definitions)." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: bury SEL_{IN,OUT,EX} Unexport some bits of linux/fs.h fix a leak in replace_fd() users
2012-10-16Merge tag 'pinctrl-fixes-v3.7-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pinctrl fixes from Linus Walleij: "A number of pinctrl fixes for the v3.7 series: - duplicate includes, section markup, code mishaps - erroneous return value in errorpath on the bcm2835 driver - remove an unused sirf function that was causing build errors - multiple-platform compilation stubs and a missed code review comment fixup on the nomadik pin controller" * tag 'pinctrl-fixes-v3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl/nomadik: always use the simple irqdomain pinctrl/nomadik: provide stubs for legacy Nomadik pinctrl: remove duplicated include from pinctrl-xway.c pinctrl: sirf: remove sirfsoc_gpio_set_pull function pinctrl: fix return value in bcm2835_pinctrl_probe() pinctrl: remove duplicated include from pinctrl-bcm2835.c pinctrl: bcm2835: Use existing pointer to struct device pinctrl: samsung: use __devinit section for init code
2012-10-16Merge branch 'ipmi' (IPMI patches from Corey Minyard)Linus Torvalds
Merge emailed patches from Corey Minyard: "Remove some bogus docs, Fix ACPI/IPMI interactions, fix some warnings, and add register spacing detection for PCI interfaces." * ipmi: IPMI: Detect register spacing on PCI interfaces IPMI: Fix some uninitialized warning IPMI: Change link order ACPI: Reorder IPMI driver before any other ACPI drivers IPMI: Remove SMBus driver info from the docs
2012-10-16IPMI: Detect register spacing on PCI interfacesCorey Minyard
The IPMI spec defines a way to detect register spacing for PCI interfaces, so implement it. Signed-off-by: Steven Hsieh <sshsieh@broadcom.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16IPMI: Fix some uninitialized warningCorey Minyard
There was a spot where the compiler couldn't tell some variables would be set. So initialize them to make the warning go away. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16IPMI: Change link orderMatthew Garrett
IPMI must be initialised before ACPI in order to ensure that any IPMI services are available before ACPI driver initialisation attempts to use any IPMI operation regions. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16ACPI: Reorder IPMI driver before any other ACPI driversMatthew Garrett
Drivers may make calls that require the ACPI IPMI driver to have been initialised already, so make sure that it appears earlier in the build order. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16IPMI: Remove SMBus driver info from the docsCorey Minyard
Some documentation for the SMBus driver is in the IPMI docs, but that code is not in the kernel tree at this point. So remove the docs to avoid confusion. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16MAINTAINERS: change email after moving for LED subsystem maintainingBryan Wu
Signed-off-by: Bryan Wu <cooloney@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16mm, mempolicy: fix printing stack contents in numa_mapsDavid Rientjes
When reading /proc/pid/numa_maps, it's possible to return the contents of the stack where the mempolicy string should be printed if the policy gets freed from beneath us. This happens because mpol_to_str() may return an error the stack-allocated buffer is then printed without ever being stored. There are two possible error conditions in mpol_to_str(): - if the buffer allocated is insufficient for the string to be stored, and - if the mempolicy has an invalid mode. The first error condition is not triggered in any of the callers to mpol_to_str(): at least 50 bytes is always allocated on the stack and this is sufficient for the string to be written. A future patch should convert this into BUILD_BUG_ON() since we know the maximum strlen possible, but that's not -rc material. The second error condition is possible if a race occurs in dropping a reference to a task's mempolicy causing it to be freed during the read(). The slab poison value is then used for the mode and mpol_to_str() returns -EINVAL. This race is only possible because get_vma_policy() believes that mm->mmap_sem protects task->mempolicy, which isn't true. The exit path does not hold mm->mmap_sem when dropping the reference or setting task->mempolicy to NULL: it uses task_lock(task) instead. Thus, it's required for the caller of a task mempolicy to hold task_lock(task) while grabbing the mempolicy and reading it. Callers with a vma policy store their mempolicy earlier and can simply increment the reference count so it's guaranteed not to be freed. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-17MIPS: hugetlbfs: Fix hazard between tlb write and pagemask restoration.Ralf Baechle
On some CPU the write to pagemask might complete before the TLB write instruction reads from the pagemask register. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-10-17MIPS: Restore pagemask after dumping the TLB.Ralf Baechle
Or bad things might happen if the last TLB entry isn't a basic size page. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-10-17MIPS: Hugetlbfs: Handle huge pages correctly in pmd_bad()Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-10-16ARM: OMAP4: devices: fixup OMAP4 DMIC platform device error messageSebastien Guiriec
Correct DMIC hwmod lockup error message and replace printk() by pr_err(). Signed-off-by: Sebastien Guiriec <s-guiriec@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-16ARM: OMAP2+: clock data: Add dev-id for the omap-gpmc dummy fckBenoit Cousson
The GPMC code has been converted to a driver by the following commit: commit da496873970c57c4b31e186d967933da0ffa0d7c Author: Afzal Mohammed <afzal@ti.com> Date: Sun Sep 23 17:28:25 2012 -0600 ARM: OMAP2+: gpmc: minimal driver support It now requests a clock with con-id "fck" otherwise the probe will fails. [ 0.342010] omap-gpmc omap-gpmc: error: clk_get [ 0.346771] omap-gpmc: probe of omap-gpmc failed with error -2 Add the "omap-gmpc" dev-id and fck con-id to the already existing gmpc-fck dummy clock. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Afzal Mohammed <afzal@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-16ARM: OMAP: resolve sparse warning concerning debug_card_init()Paul Walmsley
Commit 801475ccb2b2c1928b22aec4b9e5285d9e347602 ("ARM: OMAP: move debug_card_init() function") results in the following new sparse warning: arch/arm/plat-omap/debug-devices.c:71:12: warning: symbol 'debug_card_init' was not declared. Should it be static? Fix by implementing Tony's suggestion to add a "sideways include" to the new location of the debug-devices.h file in arch/arm/mach-omap2/. Signed-off-by: Paul Walmsley <paul@pwsan.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-16UAPI: (Scripted) Disintegrate arch/parisc/include/asmDavid Howells
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-16Merge branch 'misc' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6.git/
2012-10-16MIPS: R5000: Fix TLB hazard handling.Ralf Baechle
R5000 and the Nevada CPUs (RM5230, RM5231, RM5260, RM5261, RM5270 and RM5271) are basically the same CPU core and all are documented to require two instructions separating a write to c0_pagemask, c0_entryhi, c0_entrylo0, c0_entrylo1 or c0_index. So far we were only providing on cycle before / after a TLBR/TLBWI for R5000 but 3 cycles before and 1 cycles after for the Nevadas. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-10-16MIPS: tlbex: Deal with re-definition of labelRalf Baechle
The microassembler used in tlbex.c does not notice if a label is redefined resulting in relocations against such labels silently missrelocated. The issues exists since commit add6eb04776db4189ea89f596cbcde31b899be9d [Synthesize TLB exception handlers at runtime.] in 2.6.10 and went unnoticed for so long because the relocations for the affected branches got computed to do something *almost* sensible. The issue affects R4000, R4400, QED/IDT RM5230, RM5231, RM5260, RM5261, RM5270 and RM5271 processors. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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