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2007-07-18[AVR32] Correct misspelled CONFIG_BLK_DEV_INITRD variable.Robert P. J. Day1-1/+1
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-07-18[AVR32] Fix build error in parse_tag_rdimg()Haavard Skinnemoen1-1/+1
This code is inside an #ifdef with a misspelled config symbol, so it hasn't been used for a long time. Fix it before fixing the config symbol to keep bisection working. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-07-17PTRACE_POKEDATA consolidationAlexey Dobriyan1-5/+1
Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata() function. AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless return EPERM. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17PTRACE_PEEKDATA consolidationAlexey Dobriyan1-6/+1
Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata() function. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Report that kernel is tainted if there was an OOPSPavel Emelianov1-0/+1
If the kernel OOPSed or BUGed then it probably should be considered as tainted. Thus, all subsequent OOPSes and SysRq dumps will report the tainted kernel. This saves a lot of time explaining oddities in the calltraces. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Added parisc patch from Matthew Wilson -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16generic bug: use show_regs() instead of dump_stack()Heiko Carstens1-1/+1
The current generic bug implementation has a call to dump_stack() in case a WARN_ON(whatever) gets hit. Since report_bug(), which calls dump_stack(), gets called from an exception handler we can do better: just pass the pt_regs structure to report_bug() and pass it to show_regs() in case of a warning. This will give more debug informations like register contents, etc... In addition this avoids some pointless lines that dump_stack() emits, since it includes a stack backtrace of the exception handler which is of no interest in case of a warning. E.g. on s390 the following lines are currently always present in a stack backtrace if dump_stack() gets called from report_bug(): [<000000000001517a>] show_trace+0x92/0xe8) [<0000000000015270>] show_stack+0xa0/0xd0 [<00000000000152ce>] dump_stack+0x2e/0x3c [<0000000000195450>] report_bug+0x98/0xf8 [<0000000000016cc8>] illegal_op+0x1fc/0x21c [<00000000000227d6>] sysc_return+0x0/0x10 Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andi Kleen <ak@suse.de> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-19all-archs: consolidate .data section definition in asm-genericSam Ravnborg1-1/+1
With this consolidation we can now modify the .data section definition in one spot for all archs. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19all-archs: consolidate .text section definition in asm-genericSam Ravnborg1-1/+1
Move definition of .text section to asm-generic. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-13[AVR32] Wire up signalfd, timerfd and eventfdHaavard Skinnemoen1-0/+3
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-13[AVR32] optimize pagefault pathChristoph Hellwig1-6/+1
Avoid the costly notifier list in the pagefault path and call the kprobes code directly. The same change went into the 2.6.22 cycle for powerpc, 2s390 and sparc64 already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-13[AVR32] Remove bogus comment in arch/avr32/kernel/irq.cHaavard Skinnemoen1-9/+0
The comment at the top of arch/avr32/kernel/irq.c doesn't really make sense anymore since most of the actual interrupt handling code is elsewhere. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-09Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds3-2/+3
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Wire up sys_utimensat [AVR32] Fix section mismatch .taglist -> .init.text [AVR32] Implement dma_{alloc,free}_writecombine() AVR32: Spinlock initializer cleanup [AVR32] Use correct config symbol when setting cpuflags
2007-05-09wrap access to thread_infoRoman Zippel2-4/+4
Recently a few direct accesses to the thread_info in the task structure snuck back, so this wraps them with the appropriate wrapper. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09[AVR32] Wire up sys_utimensatHaavard Skinnemoen1-0/+1
Tested with a slightly hacked version of the test case included with the original utimensat patch. All OK. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-09[AVR32] Fix section mismatch .taglist -> .init.textHaavard Skinnemoen1-1/+1
Rename .taglist to .taglist.init to silence section mismatch warnings. The .taglist.init section was already placed in the .init output section along with .init.text, so the warning didn't indicate any real problems. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-09AVR32: Spinlock initializer cleanupThomas Gleixner1-1/+1
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap1-1/+0
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08move die notifier handling to common codeChristoph Hellwig3-17/+3
This patch moves the die notifier handling to common code. Previous various architectures had exactly the same code for it. Note that the new code is compiled unconditionally, this should be understood as an appel to the other architecture maintainer to implement support for it aswell (aka sprinkling a notify_die or two in the proper place) arm had a notifiy_die that did something totally different, I renamed it to arm_notify_die as part of the patch and made it static to the file it's declared and used at. avr32 used to pass slightly less information through this interface and I brought it into line with the other architectures. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix vmalloc_sync_all bustage] [bryan.wu@analog.com: fix vmalloc_sync_all in nommu] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-27[AVR32] Optimize the TLB miss handlerHaavard Skinnemoen1-30/+24
Reorder some instructions and change the register usage to reduce the number of pipeline stalls. Also use the bfextu and bfins instructions for bitfield manipulations instead of shifting and masking. This makes gzipping a 80MB file approximately 2% faster. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Get rid of board_setup_fbmem()Haavard Skinnemoen1-5/+2
Since the core setup code takes care of both allocation and reservation of framebuffer memory, there's no need for this board- specific hook anymore. Replace it with two global variables, fbmem_start and fbmem_size, which can be used directly. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Reserve framebuffer memory in early_parse_fbmem()Haavard Skinnemoen1-7/+61
With the current strategy of using the bootmem allocator to allocate or reserve framebuffer memory, there's a slight chance that the requested area has been taken by the boot allocator bitmap before we get around to reserving it. By inserting the framebuffer region as a reserved region as early as possible, we improve our chances for success and we make the region visible as a reserved region in dmesg and /proc/iomem without any extra work. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Simplify early handling of memory regionsHaavard Skinnemoen1-263/+232
Use struct resource to specify both physical memory regions and reserved regions and push everything into the same framework, including kernel code/data and initrd memory. This allows us to get rid of many special cases in the bootmem initialization and will also make it easier to implement more robust handling of framebuffer memory later. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Move setup_bootmem() from mm/init.c to kernel/setup.cHaavard Skinnemoen1-0/+238
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Fix NMI handlerHaavard Skinnemoen1-3/+25
Fix a problem with the NMI handler entry code related to the NMI handler sharing some code with the exception handlers. This is not a good idea because the RSR and RAR registers are not the same, and the NMI handler runs with interrupts masked the whole time so there's no need to check for pending work. Open-code the low-level NMI handling logic instead so that the pt_regs layout is actually correct when the higher-level handler is called. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Clean up exception handling codeHaavard Skinnemoen4-318/+311
* Use generic BUG() handling * Remove some useless debug statements * Use a common function _exception() to send signals or oops when an exception can't be handled. This makes sure init doesn't enter an infinite exception loop as well. Borrowed from powerpc. * Add some basic exception tracing support to the page fault code. * Rework dump_stack(), show_regs() and friends and move everything into process.c * Print information about configuration options and chip type when oopsing Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Clean up cpu identification and add features bitmapHaavard Skinnemoen1-20/+44
Clean up the cpu identification code, using definitions from <asm/sysreg.h> instead of hardcoded constants. Also, add a features bitmap to struct avr32_cpuinfo to allow other code to make decisions based upon what the running cpu is actually capable of. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Put cpu in sleep 0 when idle.Hans-Christian Egtvedt2-7/+40
This patch puts the CPU in sleep 0 when doing nothing, idle. This will turn of the CPU clock and thus save power. The CPU is waken again when an interrupt occurs. Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27[AVR32] Change system timer from count-compare to Timer/Counter 0Hans-Christian Egtvedt1-73/+77
Due to limitation of the count-compare system timer (not able to count when CPU is in sleep), the system timer had to be changed to use a peripheral timer/counter. The old COUNT-COMPARE code is still present in time.c as weak functions. The new timer is added to the architecture directory. This patch sets up TC0 as system timer The new timer has been tested on AT32AP7000/ATSTK1000 at 100 Hz, 250 Hz, 300 Hz and 1000 Hz. For more details about the timer/counter see the datasheet for AT32AP700x available at http://www.atmel.com/dyn/products/product_card.asp?part_id=3903 Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-03-07[AVR32] Fix bogus ti->flags manipulation in debug handlerHaavard Skinnemoen1-2/+2
We should OR in a bitmask, not a bit offset, into ti->flags. This might fix some strange behaviour when single stepping. Also, use set_ti_thread_flag() to manipulate the flags to avoid surprises in the future. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-03-07[AVR32] show_trace: Only walk valid stack addressesHaavard Skinnemoen1-23/+29
Terminate the frame pointer walk if (a) the address is outside the task's kernel stack or (b) if the frame pointer isn't monotonically increasing. Without this fix, show_trace() may enter an infinite loop, walking through random data anywhere in memory. Since any address within the kernel stack is guaranteed to be valid, we may eliminate the __get_user() calls as well. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-02-16Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds1-9/+13
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Use per-controller spi_board_info structures [AVR32] Warn, don't BUG if clk_disable is called too many times [AVR32] Make sure all genclocks have a parent [AVR32] Remove unnecessary sys_nfsservctl conditional [AVR32] Wire up the SysV IPC calls properly [AVR32] Define ioremap_nocache, ioport_map and ioport_unmap [AVR32] Fix prototypes for __raw_writesb and friends
2007-02-16[PATCH] clocksource: fixup is_continous changes on AVR32Thomas Gleixner1-1/+1
Fixup the is_contionous replacement by a flag field. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16[AVR32] Remove unnecessary sys_nfsservctl conditionalHaavard Skinnemoen1-4/+0
kernel/sys_ni.c defines sys_nfsservctl as a weak alias for sys_ni_syscall, so it's always safe to include it in the system call table. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-02-16[AVR32] Wire up the SysV IPC calls properlyHaavard Skinnemoen1-5/+13
Wire up the individual sysvipc system calls and remove sys_ipc. Strictly speaking, this breaks the ABI, but since sys_ipc never worked anyway due to a silly bug, it isn't actually a regression. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-02-12[PATCH] Dynamic kernel command-line: avr32Alon Bar-Lev1-3/+3
1. Rename saved_command_line into boot_command_line. 2. Set command_line as __initdata. Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Consolidate default sched_clock()Alexey Dobriyan1-9/+0
Use attribute(weak). Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] disable init/initramfs.c: architecturesJean-Paul Saman1-0/+2
Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs when CONFIG_BLK_DEV_INITRAMFS is not selected. This saves another 4 kbytes on most platfoms (some reserve PAGE_SIZE for initramfs). Signed-off-by: Jean-Paul Saman <jean-paul.saman@nxp.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[AVR32] Add missing #include <linux/module.h>Haavard Skinnemoen1-0/+1
arch/avr32/kernel/cpu.c needs THIS_MODULE, so it must include linux/module.h. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-02-09[AVR32] Use ARRAY_SIZE macro when appropriateAhmed S. Darwish1-2/+2
A patch to use ARRAY_SIZE macro already defined in linux/kernel.h Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-02-09[AVR32] /proc/interrupts displayDavid Brownell1-0/+1
The /proc/interrupts file should also display the irq_chip associated with each irq ... e.g. INTC, EIM, GPIO. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-01-26[AVR32] Export clear_page symbolHaavard Skinnemoen1-0/+1
Add missing EXPORT_SYMBOL(clear_page), allowing ext3 to be compiled as a module. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-12-08[AVR32] Don't include <asm/delay.h>Haavard Skinnemoen1-1/+1
Include <linux/delay.h> instead of <asm/delay.h> from a few places. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-12-08[AVR32] Put the chip in "stop" mode when halting the systemHaavard Skinnemoen1-0/+7
Make machine_halt() execute a sleep instruction to put the chip in "stop" mode when the system is halted. This switches off all clocks except the 32 kHz oscillator, which is needed for the RTC to keep ticking. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-12-08[AVR32] Move ethernet tag parsing to board-specific codeHaavard Skinnemoen1-24/+0
By moving the ethernet tag parsing to the board-specific code we avoid the issue of figuring out which device we're supposed to attach the information to. The board specific code knows this because it's where the actual devices are instantiated. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-12-07[PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham1-1/+1
Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] avr32: fixup kprobes preemption handlingPaul Mundt1-0/+1
While working on SH kprobes, I noticed that avr32 got the preemption handling wrong in the no probe case. The idea is that upon entry of kprobe_handler() preemption is disabled outright across the life of the kprobe, only to be re-enabled in post_kprobe_handler(). However, in the event that the probe is never activated, there's never any chance of hitting the post probe handler, which allows for the current avr32 implementation to disable preemption indefinitely, as it's currently missing a re-enable when no probe is activated. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-06AVR32: Wire up sys_epoll_pwaitHaavard Skinnemoen2-0/+10
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-11-06AVR32: Get rid of board_early_initHaavard Skinnemoen1-3/+0
board_early_init() is left over from some early prototyping work where we had to initialize the SDRAM controller ourselves. This depends on the kernel being loaded into static RAM, which just isn't possible on any commercially available products today. In order to run without a boot loader, we need to create a zImage stub or have the debugger initialize the SDRAM for us (for really low-level debugging) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-10-27[PATCH] vmlinux.lds: consolidate initcall sectionsAndrew Morton1-7/+1
Add a vmlinux.lds.h helper macro for defining the eight-level initcall table, teach all the architectures to use it. This is a prerequisite for a patch which performs initcall synchronisation for multithreaded-probing. Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> [ Added AVR32 as well ] Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-25[PATCH] AVR32: Implement and export __raw_{read,write}s[bwl]Haavard Skinnemoen1-0/+9
Implement __raw_readsb and __raw_writesb. Export __raw_reads[bwl] and __raw_writes[bwl] for use by modules. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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