- 26 Mar, 2006 32 commits
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Andy Adamson authored
Lockd and the NFSv4 server both exercise a race condition where posix_test_lock() is called either before or after posix_lock_file() to deal with a denied lock request due to a conflicting lock. Remove the race condition for the NFSv4 server by adding a new conflicting lock parameter to __posix_lock_file() , changing the name to __posix_lock_file_conf(). Keep posix_lock_file() interface, add posix_lock_conf() interface, both call __posix_lock_file_conf(). [akpm@osdl.org: Put the EXPORT_SYMBOL() where it belongs] Signed-off-by:
Andy Adamson <andros@citi.umich.edu> Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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J. Bruce Fields authored
BUG instead of handling a case that should never happen. Signed-off-by:
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Eric Dumazet authored
I discovered on oprofile hunting on a SMP platform that dentry lookups were slowed down because d_hash_mask, d_hash_shift and dentry_hashtable were in a cache line that contained inodes_stat. So each time inodes_stats is changed by a cpu, other cpus have to refill their cache line. This patch moves some variables to the __read_mostly section, in order to avoid false sharing. RCU dentry lookups can go full speed. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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Randy Dunlap authored
Add __KERNEL__ block. Use __KERNEL__ to allow ioctl interface to be usable. Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Corey Minyard authored
Need to increment the version number because of the new PCI and sysfs capabilities of the driver. People maintaining things for distros have asked that I do this after interface or major functional changes. Signed-off-by:
Corey Minyard <minyard@acm.org> Acked-by:
Matt Domsch <Matt_Domsch@dell.com> Signed-off-by:
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Corey Minyard authored
Add full driver model support for the IPMI driver. It links in the proper bus and device support. It adds an "ipmi" driver interface that has each BMC discovered by the driver (as a device). These BMCs appear in the devices/platform directory. If there are multiple interfaces to the same BMC, the driver should discover this and will only have one BMC entry. The BMC entry will have pointers to each interface device that connects to it. The device information (statistics and config information) has not yet been ported over to the driver model from proc, that will come later. This work was based on work by Yani Ioannou. I basically rewrote it using that code as a guide, but he still deserves credit :). [bunk@stusta.de: make ipmi_find_bmc_guid() static] Signed-off-by:
Yani Ioannou <yani.ioannou@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Corey Minyard authored
Modify the PCI hanling code for the IPMI driver to use the new method of tables and registering, and adds more generic PCI handling for IPMI. Unfortunately, this required a rather large rework of the way the driver did detection so it would be more event-driven. [bunk@stusta.de: make a struct static] Signed-off-by:
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Con Kolivas authored
net/core/flow.c: In function 'flow_cache_flush': net/core/flow.c:299: warning: statement with no effect Signed-off-by:
Con Kolivas <kernel@kolivas.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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NeilBrown authored
The return value of this function is never used, so let's be honest and declare it as void. Some places where invalidatepage returned 0, I have inserted comments suggesting a BUG_ON. [akpm@osdl.org: JBD BUG fix] [akpm@osdl.org: rework for git-nfs] [akpm@osdl.org: don't go BUG in block_invalidate_page()] Signed-off-by:
Neil Brown <neilb@suse.de> Acked-by:
Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by:
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NeilBrown authored
The only user ignores the return value, and the only instanace (block_sync_page) always returns 0... Signed-off-by:
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Ingo Molnar authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by:
Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by:
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Ingo Molnar authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
Alasdair G Kergon <agk@redhat.com> Cc: Greg KH <greg@kroah.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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Ingo Molnar authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
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Con Kolivas authored
If there's an error in load_image() we should return that without checking snapshot_image_loaded. Signed-off-by:
"Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
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Bjorn Helgaas authored
ia64 ioremap is now smart enough to use the correct memory attributes, so remove the EFI checks from osl.c. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: "Tolentino, Matthew E" <matthew.e.tolentino@intel.com> Cc: "Brown, Len" <len.brown@intel.com> Cc: Andi Kleen <ak@muc.de> Acked-by:
"Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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Tolentino, Matthew E authored
Here's a patch that fixes EFI boot for x86 on 2.6.16-rc5-mm3. The off-by-one is admittedly my fault, but the other two fix up the rest. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: "Tolentino, Matthew E" <matthew.e.tolentino@intel.com> Cc: "Brown, Len" <len.brown@intel.com> Cc: Andi Kleen <ak@muc.de> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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Bjorn Helgaas authored
Almost all users of the table addresses from the EFI system table want physical addresses. So rather than doing the pa->va->pa conversion, just keep physical addresses in struct efi. This fixes a DMI bug: the efi structure contained the physical SMBIOS address on x86 but the virtual address on ia64, so dmi_scan_machine() used ioremap() on a virtual address on ia64. This is essentially the same as an earlier patch by Matt Tolentino: http://marc.theaimsgroup.com/?l=linux-kernel&m=112130292316281&w=2 except that this changes all table addresses, not just ACPI addresses. Matt's original patch was backed out because it caused MCAs on HP sx1000 systems. That problem is resolved by the ioremap() attribute checking added for ia64. Signed-off-by:
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Bjorn Helgaas authored
dmi_scan_machine() tries to ioremap 0x10000 (64K) bytes, even though it only looks at the first 32 bytes or so. If the SMBIOS table is near the end of a memory region, the ioremap() may fail when it shouldn't. This is in the efi_enabled path, so it really only affects ia64 at the moment. Signed-off-by:
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Bjorn Helgaas authored
Check the EFI memory map so we can use the correct memory attributes for ioremap(). Previously, we always used uncacheable access, which blows up on some machines for regular system memory. Signed-off-by:
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Bjorn Helgaas authored
Pass the size, not a pointer to the size, to efi_mem_attribute_range(). This function validates memory regions for the /dev/mem read/write/mmap paths. The pointer allows arches to reduce the size of the range, but I think that's unnecessary complexity. Simplifying it will let me use efi_mem_attribute_range() to improve the ia64 ioremap() implementation. Signed-off-by:
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Matt Domsch authored
Enable DMI table parsing on ia64. Andi Kleen has a patch in his x86_64 tree which enables the use of i386 dmi_scan.c on x86_64. dmi_scan.c functions are being used by the drivers/char/ipmi/ipmi_si_intf.c driver for autodetecting the ports or memory spaces where the IPMI controllers may be found. This patch adds equivalent changes for ia64 as to what is in the x86_64 tree. In addition, I reworked the DMI detection, such that on EFI-capable systems, it uses the efi.smbios pointer to find the table, rather than brute-force searching from 0xF0000. On non-EFI systems, it continues the brute-force search. My test system, an Intel S870BN4 'Tiger4', aka Dell PowerEdge 7250, with latest BIOS, does not list the IPMI controller in the ACPI namespace, nor does it have an ACPI SPMI table. Also note, currently shipping Dell x8xx EM64T servers don't have these either, so DMI is the only method for obtaining the address of the IPMI controller. Signed-off-by:
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Vivek Goyal authored
Currently /proc/iomem exports physical memory also apart from io device memory. But on i386, it truncates any memory more than 4GB. This leads to problems for kexec/kdump. Kexec reads /proc/iomem to determine the system memory layout and prepares a memory map based on that and passes it to the kernel being kexeced. Given the fact that memory more than 4GB has been truncated, new kernel never gets to see and use that memory. Kdump also reads /proc/iomem to determine the physical memory layout of the system and encodes this informaiton in ELF headers. After a crash new kernel parses these ELF headers being used by previous kernel and vmcore is prepared accordingly. As memory more than 4GB has been truncated, kdump never sees that memory and never prepares ELF headers for it. Hence vmcore is truncated and limited to 4GB even if there is more physical memory in the system. This patch exports memory more than 4GB through /proc/iomem on i386. Signed-off-by:
Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by:
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Jan Beulich authored
Pass the trap number causing the call to notify_die() to the die notification handler chain in a number of instances. Also, honor the return value from the handler chain invocation in die() as, through a debugger, the fault may have been fixed. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Acked-By:
Andi Kleen <ak@suse.de> Signed-off-by:
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H. Peter Anvin authored
Add a "make isoimage" to i386 and x86-64, which allows the automatic creation of a bootable CD image. It also adds an option FDINITRD= to include an initrd of the user's choice in generated floppy- or CD boot images. Finally, some minor cleanups of the image generation code. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@muc.de> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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James Bottomley authored
We have a problem in a lot of emulated storage in that it takes a page from get_user_pages() and does something like kmap_atomic(page) modify page kunmap_atomic(page) However, nothing has flushed the kernel cache view of the page before the kunmap. We need a lightweight API to do this, so this new API would specifically be for flushing the kernel cache view of a user page which the kernel has modified. The driver would need to add flush_kernel_dcache_page(page) before the final kunmap. Signed-off-by:
James Bottomley <James.Bottomley@SteelEye.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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James Bottomley authored
Currently, get_user_pages() returns fully coherent pages to the kernel for anything other than anonymous pages. This is a problem for things like fuse and the SCSI generic ioctl SG_IO which can potentially wish to do DMA to anonymous pages passed in by users. The fix is to add a new memory management API: flush_anon_page() which is used in get_user_pages() to make anonymous pages coherent. Signed-off-by:
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Steven Rostedt authored
It has been discovered that the remove_proc_entry has a race in the removing of entries in the proc file system that are siblings. There's no protection around the traversing and removing of elements that belong in the same subdirectory. This subdirectory list is protected in other areas by the BKL. So the BKL was at first used to protect this area too, but unfortunately, remove_proc_entry may be called with spinlocks held. The BKL may schedule, so this was not a solution. The final solution was to add a new global spin lock to protect this list, called proc_subdir_lock. This lock now protects the list in remove_proc_entry, and I also went around looking for other areas that this list is modified and added this protection there too. Care must be taken since these locations call several functions that may also schedule. Since I don't see any location that these functions that modify the subdirectory list are called by interrupts, the irqsave/restore versions of the spin lock was _not_ used. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Ingo Molnar authored
Warn if free_irq() is called in IRQ context - free_irq() can execute /proc VFS work, which must not be done in IRQ context. Signed-off-by:
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Ingo Molnar authored
free_irq() should not be executed from softirq context. Found by the lock validator. The fix is to push fd_free_irq() into keventd. The code validates fine with this patch applied. (akpm: this is revolting, but so is floppy.c) [akpm@osdl.org: added flush_scheduled_work()] Signed-off-by:
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-serial: [ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion [SERIAL] amba-pl010: Remove accessor macros [SERIAL] remove 8250_acpi (replaced by 8250_pnp and PNPACPI) [SERIAL] icom: select FW_LOADER
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3030/2: fix permission check in the obscur cmpxchg syscall [ARM] nommu: rename compressed/head.S symbols to a new style [ARM] select TLS_REG_EMUL and NEEDS_SYSCALL_FOR_CMPXCHG [ARM] nommu: Move hardware page table definitions to pgtable-hwdef.h [ARM] Move read of processor ID out of lookup_processor_type() [ARM] Fix typo in tlbflush.h [ARM] noMMU: removes TLB codes in nommu mode [ARM] noMMU: block sys_fork in nommu mode [ARM] 3399/1: Fix link problem when CONFIG_PRINTK is disabled [ARM] 3398/1: Fix the VFP registers loading/storing base address [ARM] 3397/1: AT91RM9200 Header update [ARM] 3385/1: Battery support for sharp zaurus sl-5500 (collie) [ARM] SMP: don't set cpu_*_map in smp_prepare_boot_cpu include/linux/clk.h is betraying its ARM origins [ARM] Move enable_irq and disable_irq to assembler.h [ARM] 3391/1: use PLAT8250_DEV_PLATFORM{,1} for platform device id instead of 0/1 -
Andi Kleen authored
Broken earlier by me by a x86-64 patch. The code was optimized away, but the compiler still complained about an undeclared function. Signed-off-by:
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- 25 Mar, 2006 8 commits
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Lennert Buytenhek authored
Patch from Lennert Buytenhek Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12]. (The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.) Signed-off-by:
Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Nicolas Pitre authored
Patch from Nicolas Pitre Quoting RMK: |pte_write() just says that the page _may_ be writable. It doesn't say |that the MMU is programmed to allow writes. If pte_dirty() doesn't |return true, that means that the page is _not_ writable from userspace. |If you write to it from kernel mode (without using put_user) you'll |bypass the MMU read-only protection and may end up writing to a page |owned by two separate processes. Signed-off-by:
Nicolas Pitre <nico@cam.org> Signed-off-by:
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Russell King authored
Fix merge conflict in arch/arm/mm/proc-xscale.S Signed-off-by: -
Malcolm Parsons authored
Patch from Malcolm Parsons Printking a backtrace requires printk, so disable backtrace code when printk is disabled. Without this patch, a kernel with CONFIG_PRINTK disabled does not link: arch/arm/lib/lib.a(backtrace.o): In function `c_backtrace': arch/arm/lib/backtrace.S:(.text+0x108): undefined reference to `printk' arch/arm/lib/backtrace.S:(.text+0x11c): undefined reference to `printk' arch/arm/lib/lib.a(backtrace.o):(.fixup+0x8): undefined reference to `printk' Signed-off-by:
Malcolm Parsons <malcolm.parsons@gmail.com> Signed-off-by:
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Catalin Marinas authored
Patch from Catalin Marinas The current VFP code corrupts the VFP registers (including the control ones) if more than one floating point application is executed at the same time. This patch fixes the updating of the load/store base addresses for the VFP registers. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Andrew Victor authored
Patch from Andrew Victor This patch updates the hardware header to include definitions for the Memory Controller registers. Signed-off-by:
Andrew Victor <andrew@sanpeople.com> Signed-off-by:
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Pavel Machek authored
Patch from Pavel Machek This adds support for battery reading on collie. Collie slowly charges battery even with charging disabled, so I did not yet enable fast charge. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Russell King authored
The recent addition of boot_cpu_init() implements the initialisation of the online, present and possible cpu maps for the boot CPU, so there is no reason to duplicate this in the architecture smp_prepare_boot_cpu() hook. Signed-off-by:
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