aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2006-12-06[PATCH] More work_struct induced breakage (s390)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06x86[-64]:Remove 'volatile' from atomic_tLinus Torvalds
Any code that relies on the volatile would be a bug waiting to happen anyway. Don't encourage people to think that putting 'volatile' on data structures somehow fixes problems. We should always use proper locking (and other serialization) techniques. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] Remove 'volatile' from spinlock_typesArt Haas
This is a resubmission of patches originally created by Ingo Molnar. The link below is the initial (?) posting of the patch. http://marc.theaimsgroup.com/?l=linux-kernel&m=115217423929806&w=2 Remove 'volatile' from spinlock_types as it causes GCC to generate bad code (see link) and locking should be used on kernel data. Signed-off-by: Art Haas <ahaas@airmail.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] drivers/{char|isdn}: work_struct-induced breakageAl Viro
part 1 of fsck-knows-how-many Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] hamradio/dmascc: fix up work_struct-induced breakageAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (43 commits) sh: sh775x/titan fixes for irq header changes. sh: update r7780rp defconfig. sh: compile fixes for header cleanup. sh: Fixup pte_mkhuge() build failure. sh: set KBUILD_IMAGE to something sensible. sh: show held locks in stack trace with lockdep. sh: platform_pata support for R7780RP sh: stacktrace/lockdep/irqflags tracing support. sh: Fixup movli.l/movco.l atomic ops for gcc4. sh: dyntick infrastructure. sh: Clock framework tidying. sh: Turn off IRQs around get_timer_offset() calls. sh: Get the PGD right in oops case with 64-bit PTEs. sh: Fix store queue bitmap end. sh: More flexible + SH7780 earlyprintk SCIF support. sh: Fixup various PAGE_SIZE == 4096 assumptions. sh: Fixup 4K irq stacks. sh: dma-api channel capability extensions. sh: Drop name overload in dma-sh. sh: Make dma-isa depend on ISA_DMA_API. ...
2006-12-06Merge git://git.infradead.org/users/dhowells/workq-2.6Linus Torvalds
* git://git.infradead.org/users/dhowells/workq-2.6: Actually update the fixed up compile failures. WorkQueue: Fix up arch-specific work items where possible WorkStruct: make allyesconfig WorkStruct: Pass the work_struct pointer instead of context data WorkStruct: Merge the pending bit into the wq_data pointer WorkStruct: Typedef the work function prototype WorkStruct: Separate delayable and non-delayable events.
2006-12-06[PATCH] uclinux: fix mmap() of directory for nommu caseMike Frysinger
I was playing with blackfin when i hit a neat bug ... doing an open() on a directory and then passing that fd to mmap() would cause the kernel to hang after poking into the code a bit more, i found that mm/nommu.c:validate_mmap_request() checks the length and if it is 0, just returns the address ... this is in stark contrast to mmu's mm/mmap.c:do_mmap_pgoff() where it returns -EINVAL for 0 length requests ... i then noticed that some other parts of the logic is out of date between the two funcs, so perhaps that's the easy fix ? Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: remove FP conditionals in ucontext structGavin Lambert
The first patch is to the 2.6 kernel include file (for m68knommu), to get rid of the conditional definitions, otherwise the structures have different sizes depending on whether there's an FPU or not. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: ColdFire serial driver fixesGreg Ungerer
Some updates for the old ColdFire serial driver: . support 3 and 4 UARTs on some ColdFire parts that have them . enable multifunction pins to serial for 527x CPU's . support the 5272 UART's fractional baud rate divisor . switch driver name to "mcfserial" Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: switch 68360 to using rtc_timeGreg Ungerer
Adds support for RTCs (through genrtc) for M68KNOMMU. Board-specific code will have to link the appropriate RTC driver to the mach_hwclk callback, at minimum. This patch switches the 68360 code over to using rtc_time. Signed-off-by: Gavin Lambert <gavinl@compacsort.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: fix timer register access on 523x ColdFire platformsGreg Ungerer
The 523x timer TRR register is a full 32bits, the older register (on other ColdFire parts) was only 16 bits. Use the right type of __raw_read when accessing it. Problem found by Yaroslav Vinogradov <yaroslav.vinogradov@freescale.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: implement irq_canonicalize()Greg Ungerer
Add a null definition for irq_canonicalize(). It is used in the gerneric serial subsystem code, can't compile without it. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06[PATCH] m68knommu: create rtc.hGreg Ungerer
This adds support for RTCs (through genrtc) for M68KNOMMU. Board-specific code will have to link the appropriate RTC driver to the mach_hwclk callback, at minimum. Signed-off-by: Gavin Lambert <gavinl@compacsort.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06Actually update the fixed up compile failures.David Howells
Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-06Merge branch 'master' of ↵David Howells
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/pcmcia/ds.c Fix up merge failures with Linus's head and fix new compile failures. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-06sh: sh775x/titan fixes for irq header changes.Jamie Lenehan
The following moves the creation of IPR interupts into setup-7750.c and updates a few other things to make it all work after the "Drop CPU subtype IRQ headers" commit. It boots and runs fine on my titan board. - adds an ipr_idx to the ipr_data and uses a function in the subtype code to calculate the address of the IPR registers - adds a function to enable individual interrupt mode for externals in the subtype code and calls that from the titan board code instead of doing it directly. - I changed the shift in the ipr_data to be the actual # of bits to shift, instead of the numnber / 4 - made it easier to match with the manual. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: update r7780rp defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: compile fixes for header cleanup.Paul Mundt
Since some header inclusion paths were cleaned up, compilation broke. Add in the headers we need directly to build again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fixup pte_mkhuge() build failure.Paul Mundt
When hugetlbpage support isn't enabled, this can be bogus. Wrap it back in _PAGE_FLAGS_HARD to avoid changes to the base PTE when not aiming for larger sizes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: set KBUILD_IMAGE to something sensible.Paul Mundt
This was missing for sh too, wire it up.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: show held locks in stack trace with lockdep.Paul Mundt
Follows the same change as other architectures.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: platform_pata support for R7780RPPaul Mundt
This adds a platform device for the directly connected CF interface on R7780RP boards, for use with the pata_platform libata driver. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: stacktrace/lockdep/irqflags tracing support.Paul Mundt
Wire up all of the essentials for lockdep.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fixup movli.l/movco.l atomic ops for gcc4.Paul Mundt
gcc4 gets a bit pissy about the outputs: include/asm/atomic.h: In function 'atomic_add': include/asm/atomic.h:37: error: invalid lvalue in asm statement include/asm/atomic.h:30: error: invalid lvalue in asm output 1 ... this ended up being a thinko anyways, so just fix it up. Verified for proper behaviour with the older toolchains, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: dyntick infrastructure.Paul Mundt
This adds basic NO_IDLE_HZ support to the SH timer API so timers are able to wire it up. Taken from the ARM version, as it fit in to our API with very few changes needed. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Clock framework tidying.Paul Mundt
This syncs up the SH clock framework with the linux/clk.h API, for which there were only some minor changes required, namely the clk_get() dev_id and subsequent callsites. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Turn off IRQs around get_timer_offset() calls.Paul Mundt
Since all of the sys_timer sources currently do this on their own within the ->get_offset() path, it's more sensible to just have the caller take care of it when grabbing xtime_lock. Incidentally, this is more in line with what others (ie, ARM) are doing already. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Get the PGD right in oops case with 64-bit PTEs.Paul Mundt
Previously this was using a static pgd shift in the reporting code, simply flip this to PGDIR_SHIFT which does the right thing depending on varying PTE magnitudes on the SH-X2 MMU. While we're at it, and since it's been recently added, use get_TTB() for fetching the TTB, rather than the open coded instructions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fix store queue bitmap end.Paul Mundt
The end of the store queue bitmap is miscalculated when searching for a free range in sq_remap(), missing the PAGE_SHIFT shift that's done in sq_api_init(). This runs in to workloads where we can scan beyond the end of the bitmap. Spotted by Paul Jackson: http://marc.theaimsgroup.com/?l=linux-kernel&m=116493191224097&w Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: More flexible + SH7780 earlyprintk SCIF support.Paul Mundt
This makes the early printk support somewhat more flexible, moving the port definition to a config option, and making the port initialization configurable for sh-ipl+g users. At the same time, this allows us to trivially wire up the SH7780 SCIF0, so that's thrown in too more or less for free. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fixup various PAGE_SIZE == 4096 assumptions.Paul Mundt
There were a number of places that made evil PAGE_SIZE == 4k assumptions that ended up breaking when trying to play with 8k and 64k page sizes, this fixes those up. The most significant change is the way we load THREAD_SIZE, previously this was done via: mov #(THREAD_SIZE >> 8), reg shll8 reg to avoid a memory access and allow the immediate load. With a 64k PAGE_SIZE, we're out of range for the immediate load size without resorting to special instructions available in later ISAs (movi20s and so on). The "workaround" for this is to bump up the shift to 10 and insert a shll2, which gives a bit more flexibility while still being much cheaper than a memory access. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fixup 4K irq stacks.Paul Mundt
There was a clobber issue with the register we were saving the stack in, so we switch to a register that we handle in the clobber list properly already. This also follows the x86 changes for allowing the softirq checks from hardirq context. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: dma-api channel capability extensions.Mark Glaisher
This extends the SH DMA API for allowing handling of DMA channels based off of their respective capabilities. A couple of functions are added to the existing API, the core bits are register_chan_caps() for registering channel capabilities, and request_dma_bycap() for fetching a channel dynamically based off of a capability set. Signed-off-by: Mark Glaisher <mark.glaisher@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Drop name overload in dma-sh.Paul Mundt
Pass along the dev_id from request_dma() all the way down, rather than inserting an artificial name relating to the TEI line that we were doing before. This makes the line a bit less obvious, but dev_id is the proper behaviour for this regardless. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Make dma-isa depend on ISA_DMA_API.Paul Mundt
Previously we linked in the ISA DMA wrapper unconditionally. As there are very few users of this, it's better to make it conditional. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: dma-sysfs fixes.Paul Mundt
Handle the case where no registered DMACs exist somewhat more gracefully. While we're at it, check for sysdev_create_file() failing. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Fix syscall tracing ordering.Stuart Menefy
The implementation of system call tracing in the kernel has a couple of ordering problems: - the validity of the system call number is checked before calling out to system call tracing code, and should be done after - the system call number used when tracing is the one the system call was invoked with, while the system call tracing code can legitimatly change the call number (for example strace permutes fork into clone) This patch fixes both of these problems, and also reoders the code slightly to make the direct path through the code the common case. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: KSTK_EIP/KSTK_ESP consistency.Stuart Menefy
Two of the fields in /proc/[number]/stat are documented in proc(5) as: kstkesp %lu The current value of esp (stack pointer), as found in the kernel stack page for the process. kstkeip %lu The current EIP (instruction pointer). The SH currently prints the the last SP and PC of the process inside the kernel, while most other archs use the last user space values. This patch modifes the SH to display the user space values. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: TLB miss fast-path optimizations.Stuart Menefy
Handle simple TLB miss faults which can be resolved completely from the page table in assembler. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: R7780RP push-switch support.Paul Mundt
This adds simple push-switch support for the RDBRP-1/RDBREVRP-1 debug boards found on the R7780RP-1. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: generic push-switch framework.Paul Mundt
This adds support for a generic push switch framework. Adaptable for various switches, including GPIO switches and the push switches commonly found on Renesas debug boards. This allows switch states to be trivially reported through sysfs. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: pmd rework.Stuart Menefy
Remove extra bits from the pmd structure and store a kernel logical address rather than a physical address. This allows it to be directly dereferenced. Another piece of wierdness inherited from x86. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Use MMU.TTB register as pointer to current pgd.Stuart Menefy
Add TTB accessor functions and give it a sensible default value. We will use this later for optimizing the fault path. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Set up correct siginfo structures for page faults.Stuart Menefy
Remove the previous saving of fault codes into the thread_struct as they are never used, and appeared to be inherited from x86. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: gcc4 support.Stuart Menefy
This fixes up the kernel for gcc4. The existing exception handlers needed some wrapping for pt_regs access, acessing the registers via a RELOC_HIDE() pointer. The strcpy() issues popped up here too, so add -ffreestanding and kill off the symbol export. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Explicit endian selection support.Paul Mundt
Previously big endian was simply assumed if little endian was not set, which led to some cflags ordering issues. There's not much point to not having a big endian option, so shove one in a choice and wire it up in the Makefile. This lets us clean up some of the cflags ordering while we're at it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: p3map_sem sem2mutex conversion.Paul Mundt
Simple sem2mutex conversion for the p3map semaphores. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Preliminary support for SH-X2 MMU.Paul Mundt
This adds some preliminary support for the SH-X2 MMU, used by newer SH-4A parts (particularly SH7785). This MMU implements a 'compat' mode with SH-X MMUs and an 'extended' mode for SH-X2 extended features. Extended features include additional page sizes (8kB, 4MB, 64MB), as well as the addition of page execute permissions. The extended mode attributes are placed in a second data array, which requires us to switch to 64-bit PTEs when in X2 mode. With the addition of the exec perms, we also overhaul the mmap prots somewhat, now that it's possible to handle them more intelligently. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Hook SH7785 in to the build system.Paul Mundt
Simple 7785 placeholders to start hooking up other bits of code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>