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* [PATCH] Fix 'make headers_check' for AlphaDavid Woodhouse2006-09-16
| | | | | | | | | | | | | | | | | | | | | | Alpha currently fails 'make headers_check' in the 2.6.18-rc kernels. This patch fixes it, by moving the existing #ifdef __KERNEL__ in asm/page.h so that it covers everything that userspace shouldn't so, and by adding asm/compiler.h to the list of exported files so that its use within asm/byteorder.h is successful. [ Note that at least with GCC 4, <linux/compiler.h> doesn't do the forced inlining about which there are nasty comments (and a workaround) in <asm/compiler.h>, unless you set CONFIG_FORCED_INLINING. Rather than keep the mess you have in <asm/compiler.h> you could perhaps just make sure CONFIG_FORCED_INLINING=n is also honoured with GCC3, and make sure it cannot be set for Alpha? ] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix 'make headers_check' on x86_64David Woodhouse2006-09-16
| | | | | | | | | | | | | | | | | | | | | | On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-x86_64/elf.h requires asm/processor.h, which does not exist > asm-x86_64/signal.h requires linux/linkage.h, which does not exist > asm-x86_64/unistd.h requires linux/linkage.h, which does not exist > asm-x86_64/vsyscall.h requires linux/seqlock.h, which does not exist Again, move stuff which shouldn't be visible inside (mostly already existing) #ifdef __KERNEL__. This fixes a bunch of mislabelled and unlabelled #endifs in unistd.h and also cleans that up to conform with what's visible on other architectures, since the minimal fix for the error reported about would have involved a more intrusive patch, renesting other ifdefs. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix 'make headers_check' on i386David Woodhouse2006-09-16
| | | | | | | | | This brings i386 asm/unistd.h into consistency with other architectures by not exporting functionality which is not necessary. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix 'make headers_check' on ia64David Woodhouse2006-09-16
| | | | | | | | | | | | | | On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist > asm-ia64/resource.h requires asm/ustack.h, which does not exist Hide parts which shouldn't be visible to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix 'make headers_check' on s390David Woodhouse2006-09-16
| | | | | | | | | | | | | | | | On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-s390/debug.h requires linux/string.h, which does not exist > asm-s390/elf.h requires asm/system.h, which does not exist Move things around slightly so the right things end up within #ifdef __KERNEL__ and thus don't pollute the exported headers. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'merge' of ↵Linus Torvalds2006-09-13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Fix G5 DART (IOMMU) race causing occasional data corruption [POWERPC] Fix MMIO ops to provide expected barrier behaviour [POWERPC] Fix interrupt clearing in kdump shutdown sequence [POWERPC] update prep_defconfig [POWERPC] kdump: Support kernels having 64k page size. [POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic(). [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx. [POWERPC] Update defconfigs
| * [POWERPC] Fix MMIO ops to provide expected barrier behaviourPaul Mackerras2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the writeX family of functions to have a sync instruction before the MMIO store rather than after, because the generally expected behaviour is that the device receiving the MMIO store can be guaranteed to see the effects of any preceding writes to normal memory. To preserve ordering between writeX and readX, and to preserve ordering between preceding stores and the readX, the readX family of functions have had an sync added before the load. Although writeX followed by spin_unlock is not officially guaranteed to keep the writeX inside the spin-locked region unless an mmiowb() is used, there are currently drivers that depend on the previous behaviour on powerpc, which was that the mmiowb wasn't actually required. Therefore we have a per-cpu flag that is set by writeX, cleared by __raw_spin_lock and mmiowb, and tested by __raw_spin_unlock. If it is set, __raw_spin_unlock does a sync and clears it. This changes both 32-bit and 64-bit readX/writeX. 32-bit already has a sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus doesn't need the per-cpu flag. Tested on G5 (PPC970) and POWER5. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] kdump: Support kernels having 64k page size.Sachin P. Sant2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is required to generate proper core files using kdump on ppc64. Create a backup region of 64K size irrespective of the PAGE SIZE. At present 32K was used as backup size. In the case of 64K page size, second PT_LOAD segments starts at 32K and the first one is not page aligned. __ioremap() (crash_dump.c) fails if pfn = 0 which is the case for the second PT_LOAD segment. This is not an issue for 4K page size because the the first page (32K backup) is copied to second kernel memory and thus referencing with the second kernel pfn. Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().David Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | The sys_[gs]et_robust_list() syscalls were wired up on PowerPC but didn't work correctly because futex_atomic_cmpxchg_inatomic() wasn't implemented. Implement it, based on __cmpxchg_u32(). Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] headers_check: fix userspace build of asm-mips/page.hDavid Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIPS asm/page.h unconditionally includes <asm-generic/memory_model.h>, which doesn't exist in userspace. Move an #endif /* __KERNEL__ */ down a few lines to prevent that. Also, remove the broken definition of PAGE_SIZE which is never going to be correct -- in the absence of PAGE_SIZE, non-broken userspace will fall back to using sysconf() or getpagesize() instead. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] headers_check: don't expose PFN stuff to userspace in <asm-i386/setup.h>David Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | The header file <linux/pfn.h> doesn't exist in userspace and probably shouldn't -- but it's used unconditionally in <asm-i386/setup.h>. Protect it with #ifdef __KERNEL__ and move setup.h from $(header-y) to $(unifdef-y) in Kbuild accordingly. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] headers_check: move kernel-only #includes within <asm-i386/elf.h>David Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Some files which don't exist in userspace were being included unconditionally in asm-i386/elf.h. Move the offending #includes down a few lines so that they're protected by #ifdef __KERNEL__ In fact, we probably want to kill off all userspace use of asm/elf.h -- but we aren't there yet, so we should at least make it possible to include it for now. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] headers_check: move inclusion of <linux/linkage.h> in ↵David Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | <asm-i386/signal.h> Because <linux/linkage.h> doesn't exist in userspace, it should be only included from within #ifdef __KERNEL__. Move the corresponding #include Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] headers_check: remove <asm/timex.h> from user exportDavid Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's useful stuff in <linux/timex.h> but <asm/timex.h> has nothing for userspace. Stop exporting it, and include it only from within the existing #ifdef __KERNEL__ part of <linux/timex.h> This fixes a 'make headers_check' failure on i386 because asm-i386/timex.h includes both asm-i386/tsc.h and asm-i386/processor.h, neither of which are exported to userspace. It's not entirely clear _why_ it includes either of these, but it does. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] headers_check: reduce user-visible noise in <linux/nfs_fs.h>David Woodhouse2006-09-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need any of this crap included from the user-visible part of nfs_fs.h -- remove it all. In fact, we probably don't need anything but NFS_SUPER_MAGIC to be defined; is there any need for anything else? And magic numbers should probably move to <linux/magic.h> rather than being strewn across various fs-specific include files which exist in userspace for solely that purpose. With this patch, 'make header_check' works again at least on PowerPC. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds2006-09-12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: V4L/DVB (4608c): Fix I2C dependencies for saa7146 modules V4L/DVB (4608b): i2c deps fix on DVB V4L/DVB (4605): Fixes an issue with V4L1 and make headers-install V4L/DVB (4520): Fix an error when loading bttv driver on PV M4900. V4L/DVB (4511): Restore tuner_ymec_tvf66t5_b_dff_pal_ranges[] to fix UHF switch functionality V4L/DVB (4494a): Fix compilation when V4L1 support is not present
| * | V4L/DVB (4605): Fixes an issue with V4L1 and make headers-installMauro Carvalho Chehab2006-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | V4L1 support should be disabled when no CONFIG_VIDEO_V4L1_COMPAT is defined, to allow checking for broken V4L2 ports. This is very important during the migration phase for V4L2 API. However, userspace apps should be capable of using both APIs, since they need to test at runtime, via VIDIOCGCAP ioctl, if V4L1 is supported. So, when __KERNEL__ is not defined, those ioctls and corresponding structs should be visible. This patch also removes the obsolete defines HAVE_V4L1 and HAVE_V4L2, that where causing some confusion, and were replaced by CONFIG_VIDEO_V4L1_COMPAT and CONFIG_VIDEO_V4L2. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* | | sh64: Use generic BUG_ON()/WARN_ON().Paul Mundt2006-09-12
| | | | | | | | | | | | | | | | | | | | | sh64 doesn't need to do anything special for BUG_ON() or WARN_ON(), use the generic versions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | sh64: Trivial build fixes.Paul Mundt2006-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | While we've been sorting out the toolchain fiasco, some of the code has suffered a bit of bitrot. Building with GCC4 also brings up some more build warnings. Trivial fixes for both issues. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | [PATCH] audit: AUDIT_PERM supportAl Viro2006-09-11
| | | | | | | | | | | | | | | | | | add support for AUDIT_PERM predicate Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | [PATCH] audit: more syscall classes addedAl Viro2006-09-11
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-mmcLinus Torvalds2006-09-11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-mmc: [MMC] Always use a sector size of 512 bytes [MMC] Cleanup 385e3227d4d83ab13d7767c4bb3593b0256bf246 [ARM] 3751/1: i.MX/MX1 SD/MMC use 512 bytes request for SCR read [MMC] Fix SD timeout calculation [MMC] constify mmc_host_ops
| * | | [MMC] Cleanup 385e3227d4d83ab13d7767c4bb3593b0256bf246Russell King2006-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than having two places which independently calculate the timeout for data transfers, make it a library function instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Pierre Ossman <drzeus@drzeus.cx>
| * | | [MMC] constify mmc_host_opsDavid Brownell2006-09-07
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | Let drivers constify MMC host method operations tables, moving them from ".data" to ".rodata". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-09-11
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3778/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [simtec] [ARM] 3783/1: S3C2412: fix IRQ_EINT0 to IRQ_EINT3 handling [ARM] 3779/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [left] [ARM] 3777/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [regs-*.h] [ARM] 3776/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [ARM] 3775/1: S3C24XX: do not add same sysdev_driver to two classes [ARM] 3774/1: S3C24XX: SMDK2413 has two machine IDs [ARM] 3773/1: Add the HWCAP_VFP bit for the ARM926 CPUs [ARM] 3772/1: Fix compilation error in mach-ixp4xx/nslu2* [ARM] 3767/1: S3C24XX: remove changelog comments from arch/arm/mach-s3c2410 [ARM] 3766/1: Fix typo in ARM _raw_read_trylock
| * | [ARM] 3778/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 ↵Ben Dooks2006-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [simtec] Patch from Ben Dooks Remove changelog entries from include/asm-arm/arch-s3c2410 for all simtec .h files as these are irrelevant with version control. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3779/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 ↵Ben Dooks2006-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [left] Patch from Ben Dooks Remove the last of the hangelogs from include/asm-arm/arch-s3c2410, as this information is available from the revision control system Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3777/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 ↵Ben Dooks2006-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [regs-*.h] Patch from Ben Dooks Remove changelog entries from include/asm-arm/arch-s3c2410 for all regs-*.h as these are irrelevant with version control Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3776/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410Ben Dooks2006-09-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Remove changelog entries from include/asm-arm/arch-s3c2410 as these are irrelevant with version control Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3766/1: Fix typo in ARM _raw_read_trylockCatalin Marinas2006-09-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas A comma was missing between tmp and tmp2. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | [IA64] Unwire set/get_robust_listAndreas Schwab2006-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | The syscalls set/get_robust_list must not be wired up until futex_atomic_cmpxchg_inatomic is implemented. Otherwise the kernel will hang in handle_futex_death. Signed-off-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | [PATCH] NFS: large non-page-aligned direct I/O clobbers memoryTrond Myklebust2006-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic in nfs_direct_read_schedule and nfs_direct_write_schedule can allow data->npages to be one larger than rpages. This causes a page pointer to be written beyond the end of the pagevec in nfs_read_data (or nfs_write_data). Fix this by making nfs_(read|write)_alloc() calculate the size of the pagevec array, and initialise data->npages. Also get rid of the redundant argument to nfs_commit_alloc(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] sis5513: add SiS south bridge ID 0x966 and 0x968David Wang2006-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New SiS south bridge device ID is 0x966. Next coming product will be 0x968. (Will be released in Q4, this year) We don't make any updates to the IDE controller. Signed-off-by: David Wang <touch@sis.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] sh: fix FPN_START typoAlexey Dobriyan2006-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not that it passes allmodconfig without it... Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Mark Haverkamp <markh@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] IA64,sparc: local DoS with corrupted ELFsKirill Korotaev2006-09-08
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prevents cross-region mappings on IA64 and SPARC which could lead to system crash. They were correctly trapped for normal mmap() calls, but not for the kernel internal calls generated by executable loading. This code just moves the architecture-specific cross-region checks into an arch-specific "arch_mmap_check()" macro, and defines that for the architectures that needed it (ia64, sparc and sparc64). Architectures that don't have any special requirements can just ignore the new cross-region check, since the mmap() code will just notice on its own when the macro isn't defined. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Signed-off-by: Kirill Korotaev <dev@openvz.org> Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> [ Cleaned up to not affect architectures that don't need it ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Remove unneeded asm-i386/cpufeature.h from user visibility.David Woodhouse2006-09-06
| | | | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Move linux/device.h include in linux/atmdev.h to #ifdef __KERNEL__ ↵Ismail Donmez2006-09-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | section linux/device.h header is not included in the David Woodhouse's kernel-headers git tree which is used for userspace kernel headers. Which results in compile errors when building iproute2. Attached patch moves linux/device.h include under the #ifdef __KERNEL__ section. Signed-off-by: Ismail Donmez <ismail@pardus.org.tr> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] prevent timespec/timeval to ktime_t overflowThomas Gleixner2006-09-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Frank v. Waveren pointed out that on 64bit machines the timespec to ktime_t conversion might overflow. This is also true for timeval to ktime_t conversions. This breaks a "sleep inf" on 64bit machines. While a timespec/timeval with tx.sec = MAX_LONG is valid by specification the internal representation of ktime_t is based on nanoseconds. The conversion of seconds to nanoseconds overflows for seconds values >= (MAX_LONG / NSEC_PER_SEC). Check the seconds argument to the conversion and limit it to the maximum time which can be represented by ktime_t. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frank v Waveren <fvw@var.cx> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Documentation for lock_key in struct hrtimer_baseHenrik Kretzschmar2006-09-06
|/ | | | | | | | Fixes an error message on make xmldocs. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-09-02
|\ | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing Harvard caches [ARM] 3765/1: S3C24XX: cleanup include/asm-arm/arch-s3c2410/dma.h [ARM] 3764/1: S3C24XX: change type naming to kernel style [ARM] 3763/1: add both rtcs to csb337 defconfig [ARM] Fix ARM __raw_read_trylock() implementation [ARM] 3750/3: Fix double VFP emulation for EABI kernels
| * [ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing ↵George G. Davis2006-09-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Harvard caches Patch from George G. Davis Resolve ARM1136 VIPT non-aliasing cache coherency issues observed when using ptrace to set breakpoints and cleanup copy_{to,from}_user_page() while we're here as requested by Russell King because "it's also far too heavy on non-v6 CPUs". NOTES: 1. Only access_process_vm() calls copy_{to,from}_user_page(). 2. access_process_vm() calls get_user_pages() to pin down the "page". 3. get_user_pages() calls flush_dcache_page(page) which ensures cache coherency between kernel and userspace mappings of "page". However flush_dcache_page(page) may not invalidate I-Cache over this range for all cases, specifically, I-Cache is not invalidated for the VIPT non-aliasing case. So memory is consistent between kernel and user space mappings of "page" but I-Cache may still be hot over this range. IOW, we don't have to worry about flush_cache_page() before memcpy(). 4. Now, for the copy_to_user_page() case, after memcpy(), we must flush the caches so memory is consistent with kernel cache entries and invalidate the I-Cache if this mm region is executable. We don't need to do anything after memcpy() for the copy_from_user_page() case since kernel cache entries will be invalidated via the same process above if we access "page" again. The flush_ptrace_access() function (borrowed from SPARC64 implementation) is added to handle cache flushing after memcpy() for the copy_to_user_page() case. Signed-off-by: George G. Davis <gdavis@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3765/1: S3C24XX: cleanup include/asm-arm/arch-s3c2410/dma.hBen Dooks2006-08-31
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Cleanup for include/asm-arma/arch-s3c2410/dma.h, by using tab characters to indent items, remove the now un-necessary changelog, and update the copyright information. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3764/1: S3C24XX: change type naming to kernel styleBen Dooks2006-08-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The type naming in the s3c24xx dma code is riddled with typedefs creating _t types, from the code import from 2.4 which is contrary to the current Kernel coding style. This patch cleans this up, removing the typedefs and and fixing up the resultant code changes. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Fix ARM __raw_read_trylock() implementationRussell King2006-08-31
| | | | | | | | | | | | | | | | Matthew Wilcox pointed out that the generic implementation of this is unfit for use. Here's an ARM optimised version instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds2006-09-01
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: uhci-hcd: fix list access bug USB: Support for ELECOM LD-USB20 in pegasus USB: Add VIA quirk fixup for VT8235 usb2 USB: rtl8150_disconnect() needs tasklet_kill() USB Storage: unusual_devs.h for Sony Ericsson M600i USB Storage: Remove the finecam3 unusual_devs entry UHCI: don't stop at an Iso error usb gadget: g_ether spinlock recursion fix USB: add all wacom device to hid-core.c blacklist hid-core.c: Adds all GTCO CalComp Digitizers and InterWrite School Products to blacklist USB floppy drive SAMSUNG SFD-321U/EP detected 8 times
| * | USB: Add VIA quirk fixup for VT8235 usb2Mark Hindley2006-08-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch to add VIA PCI quirk for Enhanced/Extended USB on VT8235 southbridge. It is needed in order to use EHCI/USB 2.0 with ACPI. Without it IRQs are not routed correctly, you get an "Unlink after no-IRQ?" error and the device is unusable. I belive this could also be a fix for Bugzilla Bug 5835. Signed-off-by: Mark Hindley <mark@hindley.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] x86: increase MAX_MP_BUSSES on default archAndrew Morton2006-09-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Vitezslav Samel <samel@mail.cz> reports that an HP DL380 g4 fails using the default arch due to the ISA bus having an ID of 32. It would have worked OK with the generic arch - for some reason the default arch doesn't support as many busses. So bump that up to support 256 busses, but leave it at 32 if we're building a tiny system to save a bit of memory. Cc: Vitezslav Samel <samel@mail.cz> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] task delay accounting fixesShailabh Nagar2006-09-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup allocation and freeing of tsk->delays used by delay accounting. This solves two problems reported for delay accounting: 1. oops in __delayacct_blkio_ticks http://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1844.html Currently tsk->delays is getting freed too early in task exit which can cause a NULL tsk->delays to get accessed via reading of /proc/<tgid>/stats. The patch fixes this problem by freeing tsk->delays closer to when task_struct itself is freed up. As a result, it also eliminates the use of tsk->delays_lock which was only being used (inadequately) to safeguard access to tsk->delays while a task was exiting. 2. Possible memory leak in kernel/delayacct.c http://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1389.html The patch cleans up tsk->delays allocations after a bad fork which was missing earlier. The patch has been tested to fix the problems listed above and stress tested with rapid calls to delay accounting's taskstats command interface (which is the other path that can access the same data, besides the /proc interface causing the oops above). Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] ZVC: Scale thresholds depending on the size of the systemChristoph Lameter2006-09-01
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ZVC counter update threshold is currently set to a fixed value of 32. This patch sets up the threshold depending on the number of processors and the sizes of the zones in the system. With the current threshold of 32, I was able to observe slight contention when more than 130-140 processors concurrently updated the counters. The contention vanished when I either increased the threshold to 64 or used Andrew's idea of overstepping the interval (see ZVC overstep patch). However, we saw contention again at 220-230 processors. So we need higher values for larger systems. But the current default is already a bit of an overkill for smaller systems. Some systems have tiny zones where precision matters. For example i386 and x86_64 have 16M DMA zones and either 900M ZONE_NORMAL or ZONE_DMA32. These are even present on SMP and NUMA systems. The patch here sets up a threshold based on the number of processors in the system and the size of the zone that these counters are used for. The threshold should grow logarithmically, so we use fls() as an easy approximation. Results of tests on a system with 1024 processors (4TB RAM) The following output is from a test allocating 1GB of memory concurrently on each processor (Forking the process. So contention on mmap_sem and the pte locks is not a factor): X MIN TYPE: CPUS WALL WALL SYS USER TOTCPU fork 1 0.552 0.552 0.540 0.012 0.552 fork 4 0.552 0.548 2.164 0.036 2.200 fork 16 0.564 0.548 8.812 0.164 8.976 fork 128 0.580 0.572 72.204 1.208 73.412 fork 256 1.300 0.660 310.400 2.160 312.560 fork 512 3.512 0.696 1526.836 4.816 1531.652 fork 1020 20.024 0.700 17243.176 6.688 17249.863 So a threshold of 32 is fine up to 128 processors. At 256 processors contention becomes a factor. Overstepping the counter (earlier patch) improves the numbers a bit: fork 4 0.552 0.548 2.164 0.040 2.204 fork 16 0.552 0.548 8.640 0.148 8.788 fork 128 0.556 0.548 69.676 0.956 70.632 fork 256 0.876 0.636 212.468 2.108 214.576 fork 512 2.276 0.672 997.324 4.260 1001.584 fork 1020 13.564 0.680 11586.436 6.088 11592.523 Still contention at 512 and 1020. Contention at 1020 is down by a third. 256 still has a slight bit of contention. After this patch the counter threshold will be set to 125 which reduces contention significantly: fork 128 0.560 0.548 69.776 0.932 70.708 fork 256 0.636 0.556 143.460 2.036 145.496 fork 512 0.640 0.548 284.244 4.236 288.480 fork 1020 1.500 0.588 1326.152 8.892 1335.044 [akpm@osdl.org: !SMP build fix] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386: rwlock.h fix smp alternatives fixChris Wright2006-08-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8c74932779fc6f61b4c30145863a17125c1a296c ("i386: Remove alternative_smp") did not actually compile on x86 with CONFIG_SMP. This fixes the __build_read/write_lock helpers. I've boot tested on SMP. [ Andi: "Oops, I think that was a quilt unrefreshed patch. Sorry. I fixed those before testing, but then still send out the old patch." ] Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Gerd Hoffmann <kraxel@suse.de> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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