- 07 May, 2007 40 commits
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Rafael J. Wysocki authored
Move the definition of PAGES_FOR_IO to kernel/power/power.h and introduce SPARE_PAGES representing the number of pages that should be freed by the swsusp's memory shrinker in addition to PAGES_FOR_IO so that device drivers can allocate some memory (up to 1 MB total) in their .suspend() routines without causing the suspend to fail. Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Rafael J. Wysocki authored
Remove the leftover enable_nonboot_cpus() from snapshot_release(). Signed-off-by:
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David Brownell authored
Clarify that "software suspend" is what's called "hibernation" in most user interfaces, shrinking a terminology gap. (Examples include Gnome and MS-Windows.) Also provide a more succinct description of what it does, so you won't have to read the whole novel in Kconfig; and highlights just why the lack of BIOS requirements for swsusp are a big deal. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Acked-by:
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Johannes Berg authored
Change /sys/power/disk to display all valid modes as well as the currently selected one in a fashion known from the LED subsystem. This changes userspace API, but it is apparently not used much (we asked some userspace developers) Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Acked-by:
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Johannes Berg authored
Remove software_suspend() and all its users since pm_suspend(PM_SUSPEND_DISK) should be equivalent and there's no point in having two interfaces for the same thing. The patch also changes the valid_state function to return 0 (false) for PM_SUSPEND_DISK when SOFTWARE_SUSPEND is not configured instead of accepting it and having the whole thing fail later. Signed-off-by:
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Rafael J. Wysocki authored
Currently we can miss freeze_process()->signal_wake_up() in kswapd() if it happens between try_to_freeze() and prepare_to_wait(). To prevent this from happening we should check freezing(current) before calling schedule(). Signed-off-by:
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Rafael J. Wysocki authored
Make swsusp use extents instead of a bitmap to trace swap pages allocated for saving the image (the tracking is only needed in case there's an error, so that the allocated swap pages can be released). This should allow us to reduce the memory usage, practically always, and improve performance. Signed-off-by:
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Rafael J. Wysocki authored
Make handle_initrd() call try_to_freeze() in a suitable place instead of setting PF_NOFREEZE for the current task. Signed-off-by:
Nigel Cunningham <nigel@nigel.suspend2.net> Acked-by:
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Rafael J. Wysocki authored
Make swsusp call create_basic_memory_bitmaps() before processes are frozen, so that GFP_KERNEL allocations can be made in it. Additionally, ensure that the swsusp's userland interface won't be used while either pm_suspend_disk() or software_resume() is being executed. Signed-off-by:
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Rafael J. Wysocki authored
We forget to increase device_available if there's an error in snapshot_open(), so the snapshot device cannot be open at all after snapshot_open() has returned an error. Signed-off-by:
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Rafael J. Wysocki authored
Remove the two page flags that were previously used by swsusp and are no longer needed. Signed-off-by:
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Rafael J. Wysocki authored
Make swsusp use memory bitmaps instead of page flags for marking 'nosave' and free pages. This allows us to 'recycle' two page flags that can be used for other purposes. Also, the memory needed to store the bitmaps is allocated when necessary (ie. before the suspend) and freed after the resume which is more reasonable. The patch is designed to minimize the amount of changes and there are some nice simplifications and optimizations possible on top of it. I am going to implement them separately in the future. Signed-off-by:
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Rafael J. Wysocki authored
Replace direct invocations of SetPageNosave(), SetPageNosaveFree() etc. with calls to inline functions that can be changed in subsequent patches without modifying the code calling them. Signed-off-by:
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Oleg Nesterov authored
refrigerator() can miss a wakeup, "wait event" loop needs a proper memory ordering. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Acked-by:
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Robert P. J. Day authored
Remove the apparently useless config option GENERIC_BUST_SPINLOCK, since nothing in the source tree refers to it. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Acked-by:
Ian Molton <spyro@f2s.com> Signed-off-by:
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Andrew Morton authored
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=8341 Cc: <matthias.kaehlcke@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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Ivan Kokshaysky authored
Files: include/asm-alpha/thread_info.h Provide "prctl" macros for ALPHA. Signed-off-by:
Jay Estabrook <jay.estabrook@hp.com> Signed-off-by:
Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Ivan Kokshaysky authored
Files: arch/alpha/boot/bootpz.c Create a dummy "__kmalloc()" to satisfy the loader; never called. arch/alpha/boot/tools/objstrip.c Remove an include that is now (2.6.x) unnecessary. Signed-off-by:
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Milind Arun Choudhary authored
ROUND_UP macro cleanup use ALIGN Signed-off-by:
Milind Arun Choudhary <milindchoudhary@gmail.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Yoshinori Sato authored
h8300 zImage target support. Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Yoshinori Sato authored
h8300 using generic irq handler patch. Signed-off-by:
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john stultz authored
Currently h8/300 does not implement sub-jiffy timekeeping, so there is no benefit to having arch specific timekeeping code. This patch simply removes those functions and enables the generic timekeeping code. Signed-off-by:
John Stultz <johnstul@us.ibm.com> Acked-by:
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Wu, Bryan authored
This patch implements the driver necessary use the Analog Devices Blackfin processor's SPI Port. Signed-off-by:
Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Wu, Bryan authored
This patch implements the driver necessary use the Analog Devices Blackfin processor's on-chip RTC controller. Signed-off-by:
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Wu, Bryan authored
As SMC91X ethernet controller are used in blackfin STAMP 533 development board, this patch add blackfin support to the smc91x linux driver. Signed-off-by:
Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Bryan Wu authored
This patch implements the driver necessary use the Analog Devices Blackfin processor's Serial Port. Signed-off-by:
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Bryan Wu authored
This adds support for the Analog Devices Blackfin processor architecture, and currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561 (Dual Core) devices, with a variety of development platforms including those avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP, BF561-EZKIT), and Bluetechnix! Tinyboards. The Blackfin architecture was jointly developed by Intel and Analog Devices Inc. (ADI) as the Micro Signal Architecture (MSA) core and introduced it in December of 2000. Since then ADI has put this core into its Blackfin processor family of devices. The Blackfin core has the advantages of a clean, orthogonal,RISC-like microprocessor instruction set. It combines a dual-MAC (Multiply/Accumulate), state-of-the-art signal processing engine and single-instruction, multiple-data (SIMD) multimedia capabilities into a single instruction-set architecture. The Blackfin architecture, including the instruction set, is described by the ADSP-BF53x/BF56x Blackfin Processor Programming Reference http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf The Blackfin processor is already supported by major releases of gcc, and there are binary and source rpms/tarballs for many architectures at: http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete documentation, including "getting started" guides available at: http://docs.blackfin.uclinux.org/ which provides links to the sources and patches you will need in order to set up a cross-compiling environment for bfin-linux-uclibc This patch, as well as the other patches (toolchain, distribution, uClibc) are actively supported by Analog Devices Inc, at: http://blackfin.uclinux.org/ We have tested this on LTP, and our test plan (including pass/fails) can be found at: http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel [m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files] Signed-off-by:
Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by:
Aubrey Li <aubrey.li@analog.com> Signed-off-by:
Jie Zhang <jie.zhang@analog.com> Signed-off-by:
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Roland McGrath authored
wait* syscalls return -ECHILD even when an individual PID of a live child was requested explicitly, when security_task_wait denies the operation. This means that something like a broken SELinux policy can produce an unexpected failure that looks just like a bug with wait or ptrace or something. This patch makes do_wait return -EACCES (or other appropriate error returned from security_task_wait() instead of -ECHILD if some children were ruled out solely because security_task_wait failed. [jmorris@namei.org: switch error code to EACCES] Signed-off-by:
Roland McGrath <roland@redhat.com> Acked-by:
Stephen Smalley <sds@tycho.nsa.gov> Cc: Chris Wright <chrisw@sous-sol.org> Cc: James Morris <jmorris@namei.org> Signed-off-by:
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Christoph Lameter authored
Address spaces contain an allocation flag that specifies restriction on the zone for pages placed in the mapping. I.e. some device may require pages to be allocated from a DMA zone. Block devices may not be able to use pages from HIGHMEM. Memory policies and the common use of page migration works only on the highest zone. If the address space does not allow allocation from the highest zone then the pages in the address space are not migratable simply because we can only allocate memory for a specified node if we allow allocation for the highest zone on each node. Acked-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Akinobu Mita authored
SLOB doesn't calculate correct page order when page size is not 4KB. This patch fixes it with using get_order() instead of find_order() which is SLOB version of get_order(). Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Acked-by:
Matt Mackall <mpm@selenic.com> Cc: <stable@kernel.org> Signed-off-by:
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Akinobu Mita authored
If hugetlbfs module_init() fails, hugetlbfs_vfsmount is not initialized and shmget() with SHM_HUGETLB flag will cause NULL pointer dereference. Signed-off-by:
William Irwin <wli@holomorphy.com> Signed-off-by:
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Christoph Lameter authored
There is no user remaining and I have never seen any use of that flag. Signed-off-by:
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Christoph Lameter authored
SLAB_CTOR atomic is never used which is no surprise since I cannot imagine that one would want to do something serious in a constructor or destructor. In particular given that the slab allocators run with interrupts disabled. Actions in constructors and destructors are by their nature very limited and usually do not go beyond initializing variables and list operations. (The i386 pgd ctor and dtors do take a spinlock in constructor and destructor..... I think that is the furthest we go at this point.) There is no flag passed to the destructor so removing SLAB_CTOR_ATOMIC also establishes a certain symmetry. Signed-off-by:
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Christoph Lameter authored
I have never seen a use of SLAB_DEBUG_INITIAL. It is only supported by SLAB. I think its purpose was to have a callback after an object has been freed to verify that the state is the constructor state again? The callback is performed before each freeing of an object. I would think that it is much easier to check the object state manually before the free. That also places the check near the code object manipulation of the object. Also the SLAB_DEBUG_INITIAL callback is only performed if the kernel was compiled with SLAB debugging on. If there would be code in a constructor handling SLAB_DEBUG_INITIAL then it would have to be conditional on SLAB_DEBUG otherwise it would just be dead code. But there is no such code in the kernel. I think SLUB_DEBUG_INITIAL is too problematic to make real use of, difficult to understand and there are easier ways to accomplish the same effect (i.e. add debug code before kfree). There is a related flag SLAB_CTOR_VERIFY that is frequently checked to be clear in fs inode caches. Remove the pointless checks (they would even be pointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors. This is the last slab flag that SLUB did not support. Remove the check for unimplemented flags from SLUB. Signed-off-by:
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Benjamin Herrenschmidt authored
Remove the hugetlbfs specific hacks in toplevel get_unmapped_area() now that all archs and hugetlbfs itself do the right thing for both cases. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:
William Irwin <bill.irwin@oracle.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <willy@debian.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adam Litke <agl@us.ibm.com> Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Benjamin Herrenschmidt authored
generic arch_get_unmapped_area() now handles MAP_FIXED. Now that all implementations have been fixed, change the toplevel get_unmapped_area() to call into arch or drivers for the MAP_FIXED case. Signed-off-by:
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Benjamin Herrenschmidt authored
Generic hugetlb_get_unmapped_area() now handles MAP_FIXED by just calling prepare_hugepage_range() Signed-off-by:
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Benjamin Herrenschmidt authored
Handle MAP_FIXED in x86_64 arch_get_unmapped_area(), simple case, just return the address as passed in Signed-off-by:
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Benjamin Herrenschmidt authored
Handle MAP_FIXED in hugetlb_get_unmapped_area on sparc64 by just using prepare_hugepage_range() Signed-off-by:
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Benjamin Herrenschmidt authored
Handle MAP_FIXED in parisc arch_get_unmapped_area(), just return the address. We might want to also check for possible cache aliasing issues now that we get called in that case (like ARM or MIPS), leave a comment for the maintainers to pick up. Signed-off-by:
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