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* [ARM] arm/kernel/arthur.c: add MODULE_LICENSEAdrian Bunk2008-05-17
| | | | | | | This patch adds the missing MODULE_LICENSE("GPL"). Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] export copy_pageRussell King2008-05-17
| | | | | | | | | Martin Michlmayr reported that fuse complains: ERROR: "copy_page" [fs/fuse/fuse.ko] undefined! so export the needed function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* unified (weak) sys_pipe implementationUlrich Drepper2008-05-03
| | | | | | | | | | | | | | | | | | | This replaces the duplicated arch-specific versions of "sys_pipe()" with one unified implementation. This removes almost 250 lines of duplicated code. It's marked __weak, so that *if* an architecture wants to override the default implementation it can do so by simply having its own replacement version, since many architectures use alternate calling conventions for the 'pipe()' system call for legacy reasons (ie traditional UNIX implementations often return the two file descriptors in registers) I still haven't changed the cris version even though Linus says the BKL isn't needed. The arch maintainer can easily do it if there are really no obstacles. Signed-off-by: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2008-04-29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: (26 commits) [ARM] pxa: fix 1c104e0e4f6ab396960c058e95e18bdedcac945b [ARM] serial: s3c2410: platform_get_irq() may return signed unnoticed [ARM] am79c961a: platform_get_irq() may return signed unnoticed [ARM] Feroceon: Feroceon-specific WA-cache compatible {copy,clear}_user_page() [ARM] Feroceon: fix function alignment in proc-feroceon.S [ARM] Orion: catch a couple more alternative spellings of PCIe [ARM] Orion: fix orion-ehci platform resource end addresses [ARM] Orion: fix ->map_irq() PCIe bus number check [ARM] Orion: fix ioremap() optimization [ARM] feroceon: remove CONFIG_CPU_CACHE_ROUND_ROBIN check [ARM] feroceon: remove CONFIG_CPU_DCACHE_WRITETHROUGH check kprobes/arm: fix decoding of arithmetic immediate instructions kprobes/arm: fix cache flush address for instruction stub [ARM] 5022/1: Race in ARM MMCI PL18x driver, V2 [ARM] 5021/1: at91: buildfix for sam9263 + PM [ARM] 5018/1: RealView: Fix the ARM11MPCore Oprofile compilation [ARM] 5016/1: AT91: typo in mci configuration for at91cap at91sam9263 [ARM] 5017/1: pxa3xx: Report unsupported wakeup sources in pxa3xx_set_wake() [ARM] 5020/1: magician: remove __devinit marker from pasic3_leds_info [ARM] 5014/1: Cleanup reset state before entering suspend or resetting. ...
| * kprobes/arm: fix decoding of arithmetic immediate instructionsLennert Buytenhek2008-04-28
| | | | | | | | | | | | | | | | | | | | The ARM kprobes arithmetic immediate instruction decoder (space_cccc_001x()) was accidentally zero'ing out not only the Rn and Rd arguments, but the lower nibble of the immediate argument as well -- this patch fixes this. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com>
| * kprobes/arm: fix cache flush address for instruction stubNicolas Pitre2008-04-28
| | | | | | | | | | | | | | | | It is more useful to flush the cache with the actual buffer address rather than the address containing a pointer to the buffer. Signed-off-by: Nicolas Pitre <nico@marvell.com> Acked-by: Lennert Buytenhek <buytenh@marvell.com>
* | arm: use kbuild.h instead of macros in asm-offsets.cChristoph Lameter2008-04-29
| | | | | | | | | | | | | | Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | proc: switch /proc/bus/ecard/devices to seq_file interfaceAlexey Dobriyan2008-04-29
| | | | | | | | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Yani Ioannou <yani.ioannou@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | proc: remove proc_root from driversAlexey Dobriyan2008-04-29
| | | | | | | | | | | | | | | | | | | | | | | | Remove proc_root export. Creation and removal works well if parent PDE is supplied as NULL -- it worked always that way. So, one useless export removed and consistency added, some drivers created PDEs with &proc_root as parent but removed them as NULL and so on. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | proc: remove proc_busAlexey Dobriyan2008-04-29
|/ | | | | | | | | Remove proc_bus export and variable itself. Using pathnames works fine and is slightly more understandable and greppable. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'merge-fixes' into develRussell King2008-04-19
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| * Generic semaphore implementationMatthew Wilcox2008-04-17
| | | | | | | | | | | | | | | | | | | | | | Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'omap2-upstream' into develRussell King2008-04-19
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| * [ARM] 4878/1: Add oabi shim for fstatat64Riku Voipio2008-03-28
| | | | | | | | | | | | | | | | | | | | | | | | Ccoreutils and other have started using fstatat64. Thus, we need a shim for it if we want to support modern oldabi userlands (such as Debian/arm/lenny) with EABI kernels. See http://bugs.debian.org/462677 Acked-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Riku Voipio <riku.voipio@movial.fi> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| \
*-. \ Merge branches 'arm', 'at91', 'ep93xx', 'iop', 'ks8695', 'misc', 'mxc', ↵Russell King2008-04-19
|\ \ \ | | |/ | |/| | | | 'ns9x', 'orion', 'pxa', 'sa1100', 's3c' and 'sparsemem' into devel
| | * [ARM] Fix kernel mode preemptionRussell King2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Luc Van Oostenryck reported: The code removed by this patch tested the irq_cpustat_t members __local_irq_count and __local_bh_count but these fields have been removed some time ago: http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=3ab146c93e039dec99fec8d441a8dd046fe510cc Fix this oversight. Acked-by: Bill Gatliff <bgat@billgatliff.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] 4881/1: print unrecognised processor ID as part of failure messageLennert Buytenhek2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | If we fail to boot due to an unsupported processor ID, print the processor ID as part of the failure message. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] 4852/1: Add timerfd_create, timerfd_settime and timerfd_gettime ↵Uwe Kleine-König2008-04-19
| |/ | | | | | | | | | | | | syscall entries Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Linux Thumb-2 support for user-space applicationsPaul Brook2008-04-18
| | | | | | | | | | | | | | | | | | This patch implements Thumb-2 application support in Linux. Original implementation by Paul Brook with fixes for VFP and Neon by Catalin Marinas. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | Add a prefetch abort handlerPaul Brook2008-04-18
| | | | | | | | | | | | | | | | | | This patch adds a prefetch abort handler similar to the data abort one and renames the latter for consistency. Initial implementation by Paul Brook with some renaming by Catalin Marinas. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | ARMv7: Add support for the ThumbEE state saving/restoringCatalin Marinas2008-04-18
|/ | | | | | | This patch adds the detection and handling of the ThumbEE extension on ARMv7 CPUs. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* [ARM] 4870/1: fix signal return code when enable CONFIG_OABI_COMPATjanboe2008-03-20
| | | | | | | fix signal return code when enable CONFIG_OABI_COMPAT Signed-off-by: Janboe Ye <janboe.ye@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4849/1: move ATAGS asm definitionsGreg Ungerer2008-03-06
| | | | | | | | | | | Move the definitions of ATAG_CORE and ATAG_CORE_SIZE in head.S to head-common.S. There is no use of these in head.S itself, but they are used in head-common.S. When building for the !CONFIG_MMU case these were not defined when compiling head-nommu.S (which includes head-common.S). Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4847/1: kprobes: fix compilation with CONFIG_DEBUG_FS=yNicolas Pitre2008-03-06
| | | | | Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] constify function pointer tablesJan Engelhardt2008-02-09
| | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* aout: remove unnecessary inclusions of {asm, linux}/a.out.hDavid Howells2008-02-08
| | | | | | | | | | Remove now unnecessary inclusions of {asm,linux}/a.out.h. [akpm@linux-foundation.org: fix alpha build] Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUTDavid Howells2008-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suppress A.OUT library support if CONFIG_ARCH_SUPPORTS_AOUT is not set. Not all architectures support the A.OUT binfmt, so the ELF binfmt should not be permitted to go looking for A.OUT libraries to load in such a case. Not only that, but under such conditions A.OUT core dumps are not produced either. To make this work, this patch also does the following: (1) Makes the existence of the contents of linux/a.out.h contingent on CONFIG_ARCH_SUPPORTS_AOUT. (2) Renames dump_thread() to aout_dump_thread() as it's only called by A.OUT core dumping code. (3) Moves aout_dump_thread() into asm/a.out-core.h and makes it inline. This is then included only where needed. This means that this bit of arch code will be stored in the appropriate A.OUT binfmt module rather than the core kernel. (4) Drops A.OUT support for Blackfin (according to Mike Frysinger it's not needed) and FRV. This patch depends on the previous patch to move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT format is available. [jdike@addtoit.com: uml: re-remove accidentally restored code] Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* add mm argument to pte/pmd/pud/pgd_freeBenjamin Herrenschmidt2008-02-05
| | | | | | | | | | | | | | | | | | (with Martin Schwidefsky <schwidefsky@de.ibm.com>) The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as first argument. The free functions do not get the mm_struct argument. This is 1) asymmetrical and 2) to do mm related page table allocations the mm argument is needed on the free function as well. [kamalesh@linux.vnet.ibm.com: i386 fix] [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* timerfd: new timerfd APIDavide Libenzi2008-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the new timerfd API as it is implemented by the following patch: int timerfd_create(int clockid, int flags); int timerfd_settime(int ufd, int flags, const struct itimerspec *utmr, struct itimerspec *otmr); int timerfd_gettime(int ufd, struct itimerspec *otmr); The timerfd_create() API creates an un-programmed timerfd fd. The "clockid" parameter can be either CLOCK_MONOTONIC or CLOCK_REALTIME. The timerfd_settime() API give new settings by the timerfd fd, by optionally retrieving the previous expiration time (in case the "otmr" parameter is not NULL). The time value specified in "utmr" is absolute, if the TFD_TIMER_ABSTIME bit is set in the "flags" parameter. Otherwise it's a relative time. The timerfd_gettime() API returns the next expiration time of the timer, or {0, 0} if the timerfd has not been set yet. Like the previous timerfd API implementation, read(2) and poll(2) are supported (with the same interface). Here's a simple test program I used to exercise the new timerfd APIs: http://www.xmailserver.org/timerfd-test2.c [akpm@linux-foundation.org: coding-style cleanups] [akpm@linux-foundation.org: fix ia64 build] [akpm@linux-foundation.org: fix m68k build] [akpm@linux-foundation.org: fix mips build] [akpm@linux-foundation.org: fix alpha, arm, blackfin, cris, m68k, s390, sparc and sparc64 builds] [heiko.carstens@de.ibm.com: fix s390] [akpm@linux-foundation.org: fix powerpc build] [akpm@linux-foundation.org: fix sparc64 more] Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
*---. Merge branches 'at91', 'ixp', 'master', 'misc', 'pxa' and 'realview' into develRussell King2008-02-04
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * at91: [ARM] 4802/1: Fix typo and remove vague comment [ARM] 4660/3: at91: allow selecting UART for early kernel messages [ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work * ixp: [ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c [ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c [ARM] 4807/2: ixp4xx: Merge nslu2-power.c into nslu2-setup.c [ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards [ARM] 4805/1: ixp4xx: Use leds-gpio driver instead of IXP4XX-GPIO-LED driver [ARM] 4715/2: Ethernet support for IXDP425 boards [ARM] 4714/2: Headers for IXP4xx built-in Ethernet and WAN drivers [ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features [ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits [ARM] 4774/2: ixp4xx: Register dsmg600 rtc i2c_board_info [ARM] 4773/2: ixp4xx: Register nas100d rtc i2c_board_info [ARM] 4772/2: ixp4xx: Register nslu2 rtc i2c_board_info [ARM] 4769/2: ixp4xx: Button updates for the dsmg600 board [ARM] 4768/2: ixp4xx: Button and LED updates for the nas100d board [ARM] 4767/2: ixp4xx: Add bitops.h include to io.h [ARM] 4766/2: ixp4xx: Update ixp4xx_defconfig, enabling all supported boards * master: [ARM] 4810/1: - Fix 'section mismatch' building warnings [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking [ARM] 21285 serial: fix build error * misc: [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags * pxa: [ARM] 4798/1: pcm027: fix missing header file [ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1 [ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h [ARM] pxa: introduce sysdev for pxa3xx static memory controller [ARM] pxa: add preliminary suspend/resume code for pxa3xx [ARM] pxa: introduce sysdev for GPIO register saving/restoring [ARM] pxa: introduce sysdev for IRQ register saving/restoring [ARM] pxa: fix the warning of undeclared "struct pxaohci_platform_data" [ARM] pxa: change set_kset_name() to direct name assignment for MFP sysclass * realview: [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option [ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c [ARM] 4820/1: RealView: Select the timer IRQ at run-time [ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms [ARM] 4818/1: RealView: Add core-tile detection [ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c [ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h [ARM] 4815/1: RealView: Add clockevents suport for the local timers [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore [ARM] 4813/1: Add SMP helper functions for clockevents support [ARM] 4812/1: RealView: clockevents support for the RealView platforms [ARM] 4811/1: RealView: clocksource support for the RealView platforms
| | | * [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCoreCatalin Marinas2008-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds dummy local timers for each CPU so that the board clock device is used to broadcast events to the other CPUs. The patch also adds the declaration for the dummy_timer_setup function (the equivalent of local_timer_setup when CONFIG_LOCAL_TIMERS is not set). Due to the way clockevents work, the dummy timer on the first CPU has to be registered before the board timer. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * [ARM] 4813/1: Add SMP helper functions for clockevents supportCatalin Marinas2008-02-04
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | This patch adds the smp_call_function_single and smp_timer_broadcast functions and modifies ipi_timer to call the platform-specific function local_timer_interrupt. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atagsRichard Purdie2008-02-04
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the atags used by kexec are fixed to the ones originally used to boot the kernel. This is less than ideal as changing the commandline, initrd and other options would be a useful feature. This patch exports the atags used for the current kernel to userspace through an "atags" file in procfs. The presence of the file is controlled by its own Kconfig option and cleans up several ifdef blocks into a separate file. The tags for the new kernel are assumed to be at a fixed location before the kernel image itself. The location of the tags used to boot the original kernel is unimportant and no longer saved. Based on a patch from Uli Luckas <u.luckas@road.de> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Acked-by: Uli Luckas <u.luckas@road.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bitsKrzysztof Halasa2008-02-04
|/ | | | | | | | | | | | | | | Adds functions to read and write IXP4xx "feature" (aka "fuse") bits, containing information about available/enabled CPU features. The uncompress.h included by boot/compressed/misc.c resides in a different space than rest of the kernel and thus can't use asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use EXPORTed symbol "processor_id"). Posted to linux-arm-kernel on 2 Dec 2007 and revised. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* all archs: consolidate init and exit sections in vmlinux.lds.hSam Ravnborg2008-01-28
| | | | | | | | | | | This patch consolidate all definitions of .init.text, .init.data and .exit.text, .exit.data section definitions in the generic vmlinux.lds.h. This is a preparational patch - alone it does not buy us much good. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
*-----. Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', ↵Russell King2008-01-28
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 's3c2410', 'sa1100' and 'vfp' into devel * at91: (24 commits) [ARM] 4615/4: sam926[13]ek buttons updated [ARM] 4765/1: [AT91] AT91CAP9A-DK board support [ARM] 4764/1: [AT91] AT91CAP9 core support [ARM] 4738/1: at91sam9261: Remove udc pullup enabling in board initialisation [ARM] 4761/1: [AT91] Board-support for NEW_LEDs [ARM] 4760/1: [AT91] SPI CS0 errata on AT91RM9200 [ARM] 4759/1: [AT91] Buttons on CSB300 [ARM] 4758/1: [AT91] LEDs [ARM] 4757/1: [AT91] UART initialization [ARM] 4756/1: [AT91] Makefile cleanup [ARM] 4755/1: [AT91] NAND update [ARM] 4754/1: [AT91] SSC library support [ARM] 4753/1: [AT91] Use DMA_BIT_MASK [ARM] 4752/1: [AT91] RTT, RTC and WDT peripherals on SAM9 [ARM] 4751/1: [AT91] ISI peripheral on SAM9263 [ARM] 4750/1: [AT91] STN LCD displays on SAM9261 [ARM] 4734/1: at91sam9263ek: include IRQ for Ethernet PHY [ARM] 4646/1: AT91: configurable HZ, default to 128 [ARM] 4688/1: at91: speed-up irq processing [ARM] 4657/1: AT91: Header definition update ... * ep93xx: [ARM] 4671/1: ep93xx: remove obsolete gpio_line_* operations [ARM] 4670/1: ep93xx: implement IRQT_BOTHEDGE gpio irq sense type [ARM] 4669/1: ep93xx: simplify GPIO code and cleanups [ARM] 4668/1: ep93xx: implement new GPIO API * iop: [ARM] 4770/1: GLAN Tank: correct physmap_flash_data width field [ARM] 4732/1: GLAN Tank: register rtc-rs5c372 i2c device [ARM] 4708/1: iop: update defconfigs for 2.6.24 * kprobes: ARM kprobes: let's enable it ARM kprobes: special hook for the kprobes breakpoint handler ARM kprobes: prevent some functions involved with kprobes from being probed ARM kprobes: don't let a single-stepped stmdb corrupt the exception stack ARM kprobes: add the kprobes hook to the page fault handler ARM kprobes: core code ARM kprobes: instruction single-stepping support * ks8695: [ARM] 4603/1: KS8695: debugfs interface to view pin state [ARM] 4601/1: KS8695: PCI support * misc: [ARM] remove duplicate includes [ARM] CONFIG_DEBUG_STACK_USAGE [ARM] 4689/1: small comment wrap fix [ARM] 4687/1: Trivial arch/arm/kernel/entry-common.S comment fix [ARM] 4666/1: ixp4xx: fix sparse warnings in include/asm-arm/arch-ixp4xx/io.h [ARM] remove reference to non-existent MTD_OBSOLETE_CHIPS [SERIAL] 21285: Report baud rate back via termios [ARM] Remove pointless casts from void pointers, [ARM] Misc minor interrupt handler cleanups [ARM] Remove at91_lcdc.h [ARM] ARRAY_SIZE() cleanup [ARM] Update mach-types * msm: [ARM] msm: dma support for MSM7X00A [ARM] msm: board file for MACH_HALIBUT (QCT MSM7200A) [ARM] msm: irq and timer support for ARCH_MSM7X00A [ARM] msm: core platform support for ARCH_MSM7X00A * s3c2410: (33 commits) [ARM] 4795/1: S3C244X: Add armclk and setparent call [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code [ARM] 4793/1: S3C24XX: Add IRQ->GPIO pin mapping function [ARM] 4792/1: S3C24XX: Remove warnings from debug-macro.S [ARM] 4791/1: S3C2412: Make fclk a parent of msysclk [ARM] 4790/1: S3C2412: Fix parent selection for msysclk. [ARM] 4789/1: S3C2412: Add missing CLKDIVN register values [ARM] 4788/1: S3C24XX: Fix paramet to s3c2410_dma_ctrl if S3C2410_DMAF_AUTOSTART used. [ARM] 4787/1: S3C24XX: s3c2410_dma_request() should return the allocated channel number [ARM] 4786/1: S3C2412: Add SPI FIFO controll constants [ARM] 4785/1: S3C24XX: Add _SHIFT definitions for S3C2410_BANKCON registers [ARM] 4784/1: S3C24XX: Fix GPIO restore glitches [ARM] 4783/1: S3C24XX: Add s3c2410_gpio_getpull() [ARM] 4782/1: S3C24XX: Define FIQ_START for any FIQ users [ARM] 4781/1: S3C24XX: DMA suspend and resume support [ARM] 4780/1: S3C2412: Allow for seperate DMA channels for TX and RX [ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call [ARM] 4778/1: S3C2412: Add armclk and init from DVS state [ARM] 4777/1: S3C24XX: Ensure clk_set_rate() checks the set_rate method for the clk [ARM] 4775/1: s3c2410: fix compilation error if only s3c2442 cpu is selected ... * sa1100: [ARM] sa1100: add clock source support * vfp: [ARM] 4584/2: ARMv7: Add Advanced SIMD (NEON) extension support [ARM] 4583/1: ARMv7: Add VFPv3 support [ARM] 4582/2: Add support for the common VFP subarchitecture
| | | | * [ARM] 4584/2: ARMv7: Add Advanced SIMD (NEON) extension supportCatalin Marinas2008-01-26
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables the use of the Advanced SIMD (NEON) extension on ARMv7. The NEON technology is a 64/128-bit hybrid SIMD architecture for accelerating the performance of multimedia and signal processing applications. The extension shares the registers with the VFP unit and enabling/disabling and saving/restoring follow the same rules. In addition, there are instructions that do not have the appropriate CP number encoded, the checks being made in the call_fpe function. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * [ARM] 4689/1: small comment wrap fixNicolas Pitre2008-01-26
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * [ARM] 4687/1: Trivial arch/arm/kernel/entry-common.S comment fixGeorge G. Davis2008-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the comment match the code Signed-off-by: George G. Davis <gdavis@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * [ARM] ARRAY_SIZE() cleanupAlejandro Martinez Ruiz2008-01-26
| | |/ | |/| | | | | | | | | | Signed-off-by: Alejandro Martinez Ruiz <alex@flawedcode.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * ARM kprobes: special hook for the kprobes breakpoint handlerNicolas Pitre2008-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kprobes code is already able to cope with reentrant probes, so its handler must be called outside of the region protected by undef_lock. If ever this lock is released when handlers are called then this commit could be reverted. Signed-off-by: Nicolas Pitre <nico@marvell.com>
| | * ARM kprobes: prevent some functions involved with kprobes from being probedNicolas Pitre2008-01-26
| | | | | | | | | | | | Signed-off-by: Nicolas Pitre <nico@marvell.com>
| | * ARM kprobes: don't let a single-stepped stmdb corrupt the exception stackNicolas Pitre2008-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If kprobes installs a breakpoint on a "stmdb sp!, {...}" instruction, and then single-step it by simulation from the exception context, it will corrupt the saved regs on the stack from the previous context. To avoid this, let's add an optional parameter to the svc_entry macro allowing for a hole to be created on the stack before saving the interrupted context, and use it in the undef_svc handler when kprobes is enabled. Signed-off-by: Nicolas Pitre <nico@marvell.com>
| | * ARM kprobes: core codeAbhishek Sagar2008-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a full implementation of Kprobes including Jprobes and Kretprobes support. This ARM implementation does not follow the usual kprobes double- exception model. The traditional model is where the initial kprobes breakpoint calls kprobe_handler(), which returns from exception to execute the instruction in its original context, then immediately re-enters after a second breakpoint (or single-stepping exception) into post_kprobe_handler(), each time the probe is hit.. The ARM implementation only executes one kprobes exception per hit, so no post_kprobe_handler() phase. All side-effects from the kprobe'd instruction are resolved before returning from the initial exception. As a result, all instructions are _always_ effectively boosted regardless of the type of instruction, and even regardless of whether or not there is a post-handler for the probe. Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Signed-off-by: Quentin Barnes <qbarnes@gmail.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
| | * ARM kprobes: instruction single-stepping supportQuentin Barnes2008-01-26
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the code implementing instruction single-stepping for kprobes on ARM. To get around the limitation of no Next-PC and no hardware single- stepping, all kprobe'd instructions are split into three camps: simulation, emulation, and rejected. "Simulated" instructions are those instructions which behavior is reproduced by straight C code. "Emulated" instructions are ones that are copied, slightly altered and executed directly in the instruction slot to reproduce their behavior. "Rejected" instructions are ones that could be simulated, but work hasn't been put into simulating them. These instructions should be very rare, if not unencountered, in the kernel. If ever needed, code could be added to simulate them. One might wonder why this and the ptrace singlestep facility are not sharing some code. Both approaches are fundamentally different because the ptrace code regains control after the stepped instruction by installing a breakpoint after the instruction itself, and possibly at the location where the instruction might be branching to, instead of simulating or emulating the target instruction. The ptrace approach isn't suitable for kprobes because the breakpoints would have to be moved back, and the icache flushed, everytime the probe is hit to let normal code execution resume, which would have a significant performance impact. It is also racy on SMP since another CPU could, with the right timing, sail through the probe point without being caught. Because ptrace single-stepping always result in a different process to be scheduled, the concern for performance is much less significant. On the other hand, the kprobes approach isn't (currently) suitable for ptrace because it has no provision for proper user space memory protection and translation, and even if that was implemented, the gain wouldn't be worth the added complexity in the ptrace path compared to the current approach. So, until kprobes does support user space, both kprobes and ptrace are best kept independent and separate. Signed-off-by: Quentin Barnes <qbarnes@gmail.com> Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
* / [ARM] Fix timer damage from d3d74453c34f8fd87674a8cf5b8a327c68f22e99Russell King2008-01-28
|/ | | | | | | | | | | Move the xtime write mode seqlock into timer_tick(), so it only surrounds the call to do_timer(). This avoids a deadlock in update_process_times() ... hrtimer_get_softirq_time() which tries to get a read mode seqlock on xtime, thereby preventing booting. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* sched: remove printk_clock()Ingo Molnar2008-01-25
| | | | | | printk_clock() is obsolete - it has been replaced with cpu_clock(). Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Driver core: change sysdev classes to use dynamic kobject namesKay Sievers2008-01-24
| | | | | | | | | | All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [ARM] 4665/1: fix __und_usr wrt accessing the undefined insn in user spaceNicolas Pitre2007-11-26
| | | | | | | The ldrt fixup code expects r9 to be set. Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4659/1: remove possibilities for spurious false negative with ↵Nicolas Pitre2007-11-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __kuser_cmpxchg The ARM __kuser_cmpxchg routine is meant to implement an atomic cmpxchg in user space. It however can produce spurious false negative if a processor exception occurs in the middle of the operation. Normally this is not a problem since cmpxchg is typically called in a loop until it succeeds to implement an atomic increment for example. Some use cases which don't involve a loop require that the operation be 100% reliable though. This patch changes the implementation so to reattempt the operation after an exception has occurred in the critical section rather than abort it. Here's a simple program to test the fix (don't use CONFIG_NO_HZ in your kernel as this depends on a sufficiently high interrupt rate): #include <stdio.h> typedef int (__kernel_cmpxchg_t)(int oldval, int newval, int *ptr); #define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0) int main() { int i, x = 0; for (i = 0; i < 100000000; i++) { int v = x; if (__kernel_cmpxchg(v, v+1, &x)) printf("failed at %d: %d vs %d\n", i, v, x); } printf("done with %d vs %d\n", i, x); return 0; } Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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