- 26 Aug, 2008 4 commits
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Masakazu Mokuno authored
Fix the ioremap of the spu shadow regs on the PS3. The current PS3 hypervisor requires the spu shadow regs to be mapped with the PTE page protection bits set as read-only (PP=3). This implementation uses the low level __ioremap() to bypass the page protection settings inforced by ioremap_flags() to get the needed PTE bits set for the shadow regs. This fixes a runtime failure on the PS3 introduced by the powerpc ioremap_prot rework of commit a1f242ff ("powerpc ioremap_prot"). Signed-off-by:
Masakazu Mokuno <mokuno@sm.sony.co.jp> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Masakazu Mokuno authored
Rework the PS3 MMU hash table code to remove the need to ioremap the hash table by using the HV calls lv1_insert_htab_entry() and lv1_read_htab_entries(). This fixes a runtime failure on the PS3 introduced by the powerpc ioremap_prot rework of commit a1f242ff ("powerpc ioremap_prot"). Signed-off-by:
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Geoff Levand authored
Update ps3_defconfig. Signed-off-by:
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Carl Love authored
If an error occurs on opcontrol start, the event and per cpu buffers are released. If later opcontrol shutdown is called then the free function will be called again to free buffers that no longer exist. This results in a kernel oops. The following changes prevent the call to delete buffers that don't exist. Signed-off-by:
Carl Love <carll@us.ibm.com> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Robert Richter <robert.richter@amd.com> Signed-off-by:
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- 21 Aug, 2008 7 commits
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Kumar Gala authored
Since we are updated defconfigs I went ahead and moved the asp8347_defconfig under 83xx/ and the mpc8536_ds_defconfig under 85xx/ as that is where they should have been to start with. Signed-off-by:Kumar Gala <galak@kernel.crashing.org>
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Scott Wood authored
This patch fixes the following build error with mpc866_ads_defconfig: <-- snip --> ... WRAP arch/powerpc/boot/cuImage.mpc866ads powerpc64-linux-ld: arch/powerpc/boot/cuboot-mpc866ads.o: No such file: No such file or directory make[2]: *** [arch/powerpc/boot/cuImage.mpc866ads] Error 1 <-- snip --> Reported-by:
Adrian Bunk <bunk@kernel.org> Signed-off-by:
Scott Wood <scottwood@freescale.com> Signed-off-by:
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Laurent Pinchart authored
The CPM2 GPIO library code uses the non thread-safe clrbits32/setbits32 macros. This patch protects them with a spinlock. Signed-off-by:
Laurent Pinchart <laurentp@cse-semaphore.com> Signed-off-by:
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Timur Tabi authored
Fix two memory leaks in the Freescale QE library: add a missing kfree() in ucc_fast_init() and ucc_slow_init() if the ioremap() fails, and update ucc_fast_free() and ucc_slow_free() to call iounmap() if necessary. Based on a patch from Tony Breeds <tony@bakeyournoodle.com>. Signed-off-by:
Timur Tabi <timur@freescale.com> Signed-off-by:
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Wolfgang Grandegger authored
Due to the missing compatible property for the SOC, the MPC I2C buses are not found any more. This patch fixes this issue. Furthermore it corrects the name of the SOC node and adds the missing I2C node for the RTC. Signed-off-by:
Wolfgang Grandegger <wg@grandegger.com> Signed-off-by:
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Kumar Gala authored
When we coverted the .dts to v1 we lost a space between the irq and its polarity/sense information. This causes a bit of chaos as the reset of the blob is off by one cell. This was noticed by booting and getting errors w/ATA due to lock of interrupts. Signed-off-by: -
Linus Torvalds authored
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- 20 Aug, 2008 29 commits
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Al Viro authored
After commit a97c9bf3 (fix cramfs making duplicate entries in inode cache) in kernel 2.6.14, named-pipe on cramfs does not work properly. It seems the commit make all named-pipe on cramfs share their inode (and named-pipe buffer). Make ..._test() refuse to merge inodes with ->i_ino == 1, take inode setup back to get_cramfs_inode() and make ->drop_inode() evict ones with ->i_ino == 1 immediately. Reported-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@kernel.org> [2.6.14 and later] Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Ian Campbell authored
Fixes kernel BUG at lib/radix-tree.c:473. Previously the handler was incidentally provided by tmpfs but this was removed with: commit 14fcc23f Author: Hugh Dickins <hugh@veritas.com> Date: Mon Jul 28 15:46:19 2008 -0700 tmpfs: fix kernel BUG in shmem_delete_inode relying on this behaviour was incorrect in any case and the BUG also appeared when the device node was on an ext3 filesystem. v2: override a_ops at open() time rather than mmap() time to minimise races per AKPM's concerns. Signed-off-by:
Ian Campbell <ijc@hellion.org.uk> Cc: Jaya Kumar <jayakumar.lkml@gmail.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hugh@veritas.com> Cc: Johannes Weiner <hannes@saeurebad.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Kel Modderman <kel@otaku42.de> Cc: Markus Armbruster <armbru@redhat.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: <stable@kernel.org> [14fcc23f is in 2.6.25.14 and 2.6.26.1] Signed-off-by:
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Anton Vorontsov authored
On a PowerPC board with ds1374 RTC I'm getting this error while RTC tries to probe: rtc-ds1374 0-0068: unable to request IRQ This happens because I2C probing code (drivers/of/of_i2c.c) is specifying IRQ0 for 'no irq' case, which is correct. The driver handles this incorrectly, though. This patch fixes it. Signed-off-by:
Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Acked-by:
Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by:
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Nick Piggin authored
XIP can call into get_xip_mem concurrently with the same file,offset with create=1. This usually maps down to get_block, which expects the page lock to prevent such a situation. This causes ext2 to explode for one reason or another. Serialise those calls for the moment. For common usages today, I suspect get_xip_mem rarely is called to create new blocks. In future as XIP technologies evolve we might need to look at which operations require scalability, and rework the locking to suit. Signed-off-by:
Nick Piggin <npiggin@suse.de> Cc: Jared Hulbert <jaredeh@gmail.com> Acked-by:
Carsten Otte <cotte@freenet.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Nick Piggin authored
XIP has a race between sparse pages being inserted into page tables, and sparse pages being zapped when its time to put a non-sparse page in. What can happen is that a process can be left with a dangling sparse page in a MAP_SHARED mapping, while the rest of the world sees the non-sparse version. Ie. data corruption. Guard these operations with a seqlock, making fault-in-sparse-pages the slowpath, and try-to-unmap-sparse-pages the fastpath. Signed-off-by:
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Nick Piggin authored
There is a race with dirty page accounting where a page may not properly be accounted for. clear_page_dirty_for_io() calls page_mkclean; then TestClearPageDirty. page_mkclean walks the rmaps for that page, and for each one it cleans and write protects the pte if it was dirty. It uses page_check_address to find the pte. That function has a shortcut to avoid the ptl if the pte is not present. Unfortunately, the pte can be switched to not-present then back to present by other code while holding the page table lock -- this should not be a signal for page_mkclean to ignore that pte, because it may be dirty. For example, powerpc64's set_pte_at will clear a previously present pte before setting it to the desired value. There may also be other code in core mm or in arch which do similar things. The consequence of the bug is loss of data integrity due to msync, and loss of dirty page accounting accuracy. XIP's __xip_unmap could easily also be unreliable (depending on the exact XIP locking scheme), which can lead to data corruption. Fix this by having an option to always take ptl to check the pte in page_check_address. It's possible to retain this optimization for page_referenced and try_to_unmap. Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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Ken Chen authored
When user calls sys_setpriority(PRIO_PGRP ...) on a NPTL style multi-LWP process, only the task leader of the process is affected, all other sibling LWP threads didn't receive the setting. The problem was that the iterator used in sys_setpriority() only iteartes over one task for each process, ignoring all other sibling thread. Introduce a new macro do_each_pid_thread / while_each_pid_thread to walk each thread of a process. Convert 4 call sites in {set/get}priority and ioprio_{set/get}. Signed-off-by:Ken Chen <kenchen@google.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Michael Hennerich authored
Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver Fix bug: does nor properply resume after suspend mem Fix for PM_SUSPEND_MEM: Save and restore peripheral base and DMA registers Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
Bryan Wu <cooloney@kernel.org> Acked-by:
Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by:
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Johannes Weiner authored
Absolute alignment requirements may never be applied to node-relative offsets. Andreas Herrmann spotted this flaw when a bootmem allocation on an unaligned node was itself not aligned because the combination of an unaligned node with an aligned offset into that node is not garuanteed to be aligned itself. This patch introduces two helper functions that align a node-relative index or offset with respect to the node's starting address so that the absolute PFN or virtual address that results from combining the two satisfies the requested alignment. Then all the broken ALIGN()s in alloc_bootmem_core() are replaced by these helpers. Signed-off-by:
Johannes Weiner <hannes@saeurebad.de> Reported-by:
Andreas Herrmann <andreas.herrmann3@amd.com> Debugged-by:
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Andrew Morton authored
If check_legacy_ioport() returns true, we leak *info. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11362Reported-by:
Daniel Marjamki <danielm77@spray.se> Cc: Christian Krafft <krafft@de.ibm.com> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Corey Minyard <minyard@acm.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Krzysztof Helt authored
Release cmap memory allocated in the probe function. Signed-off-by:
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Atsushi Nemoto authored
With commit 5ad31a57 ("rtc: remove BKL for ioctl()"), RTC_UIE_ON ioctl cause double lock on rtc->ops_lock. The ops_lock must not be held while set_uie() calls rtc_read_time() which takes the lock. Also clear_uie() does not need ops_lock. This patch fixes return value of RTC_UIE_OFF ioctl too. Signed-off-by:
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Pavel Emelyanov authored
In case the binfmt_misc binary handler is registered *before* the e.g. script one (when for example being compiled as a module) the following situation may occur: 1. user launches a script, whose interpreter is a misc binary; 2. the load_misc_binary sets the misc_bang and returns -ENOEVEC, since the binary is a script; 3. the load_script_binary loads one and calls for search_binary_hander to run the interpreter; 4. the load_misc_binary is called again, but refuses to load the binary due to misc_bang bit set. The fix is to move the misc_bang setting lower - prior to the actual call to the search_binary_handler. Caused by the commit 3a2e7f47 (binfmt_misc.c: avoid potential kernel stack overflow) Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Reported-by:
Kirill A. Shutemov <kirill@shutemov.name> Tested-by:
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Akinobu Mita authored
The name of brd block device is "ramdisk", it's not "brd". (The block device is registered by register_blkdev(RAMDISK_MAJOR, "ramdisk") So it should be unregistered by unregister_blkdev(RAMDISK_MAJOR, "ramdisk") Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Acked-by:
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Sven Wegener authored
We leak the memory allocated for the nbd_dev array at multiple places. Fix them by either adding a kfree() or by rearranging code to return before we allocate the memory. Signed-off-by:
Sven Wegener <sven.wegener@stealer.net> Cc: Paul Clements <paul.clements@steeleye.com> Signed-off-by:
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Marcin Slusarz authored
mminit_loglevel is now used from mminit_verify_zonelist <- build_all_zonelists <- 1. online_pages <- memory_block_action <- memory_block_change_state <- store_mem_state (sys handler) 2. numa_zonelist_order_handler (proc handler) so it cannot be annotated __meminit - drop it fixes following section mismatch warning: WARNING: vmlinux.o(.text+0x71628): Section mismatch in reference from the function mminit_verify_zonelist() to the variable .meminit.data:mminit_loglevel The function mminit_verify_zonelist() references the variable __meminitdata mminit_loglevel. This is often because mminit_verify_zonelist lacks a __meminitdata annotation or the annotation of mminit_loglevel is wrong. Signed-off-by:
Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by:
Mel Gorman <mel@csn.ul.ie> Signed-off-by:
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Hugh Dickins authored
Adjust <Alt><SysRq>m show_swap_cache_info() to show "Free swap" as a signed long: the signed format is preferable, because during swapoff nr_swap_pages can legitimately go negative, so makes more sense thus (it used to be shown redundantly, once as signed and once as unsigned). Signed-off-by:
Hugh Dickins <hugh@veritas.com> Reviewed-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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Hugh Dickins authored
Add a comment to s390's page_test_dirty/page_clear_dirty/page_set_dirty dance in page_remove_rmap(): I was wrong to think the PageSwapCache test could be avoided, and would like a comment in there to remind me. And mention s390, to help us remember that this block is not really common. Also move down the "It would be tidy to reset PageAnon" comment: it does not belong to s390's block, and it would be unwise to reset PageAnon before we're done with testing it. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Mike Frysinger authored
Signed-off-by:
Mike Frysinger <vapier.adi@gmail.com> Signed-off-by:
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Graf Yang authored
Signed-off-by:
Graf Yang <graf.yang@analog.com> Signed-off-by:
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Mike Frysinger authored
Signed-off-by:
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Mike Frysinger authored
Blackfin RTC Driver: move irq request/free out of open/release and into probe/remove so that the non-dev interfaces (like sysfs) work as expected Signed-off-by:
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Clement Calmels authored
This addresses http://bugzilla.kernel.org/show_bug.cgi?id=11318 In function show_map (file: fs/proc/task_mmu.c), if vma->vm_pgoff > 2^20 than (vma->vm_pgoff << PAGE_SIZE) is greater than 2^32 (with PAGE_SIZE equal to 4096 (i.e. 2^12). The next seq_printf use an unsigned long for the conversion of (vma->vm_pgoff << PAGE_SIZE), as a result the offset value displayed in /proc/self/maps is truncated if the page offset is greater than 2^20. A test that shows this issue: #define _GNU_SOURCE #include <sys/types.h> #include <sys/stat.h> #include <sys/mman.h> #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <unistd.h> #include <string.h> #define PAGE_SIZE (getpagesize()) #if __i386__ # define U64_STR "%llx" #elif __x86_64 # define U64_STR "%lx" #else # error "Architecture Unsupported" #endif int main(int argc, char *argv[]) { int fd; char *addr; off64_t offset = 0x10000000; char *filename = "/dev/zero"; fd = open(filename, O_RDONLY); if (fd < 0) { perror("open"); return 1; } offset *= 0x10; printf("offset = " U64_STR "\n", offset); addr = (char*)mmap64(NULL, PAGE_SIZE, PROT_READ, MAP_PRIVATE, fd, offset); if ((void*)addr == MAP_FAILED) { perror("mmap64"); return 1; } { FILE *fmaps; char *line = NULL; size_t len = 0; ssize_t read; size_t filename_len = strlen(filename); fmaps = fopen("/proc/self/maps", "r"); if (!fmaps) { perror("fopen"); return 1; } while ((read = getline(&line, &len, fmaps)) != -1) { if ((read > filename_len + 1) && (strncmp(&line[read - filename_len - 1], filename, filename_len) == 0)) printf("%s", line); } if (line) free(line); fclose(fmaps); } close(fd); return 0; } [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Clement Calmels <cboulte@gmail.com> Signed-off-by:
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Andreas Herrmann authored
"bootmem_debug" is not mentioned in kernel-parameters.txt. Recently I had to use that kernel option and I think it should be documented. Signed-off-by:
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Matthew Garrett authored
eeepc-laptop uses the hwmon struct after unregistering the device, causing an oops on module unload. Flip the ordering to fix. Signed-off-by:
Matthew Garrett <mjg@redhat.com> Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Corentin Chary <corentincj@iksaif.net> Cc: Karol Kozimor <sziwan@users.sourceforge.net> Cc: <stable@kernel.org> [2.6.26.x] Signed-off-by:
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David Howells authored
Provide ioremap_wc() for FRV. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Supply ioremap_wc() for MN10300. Signed-off-by:
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David Woodhouse authored
Purely cosmetic for now, but we might as well get it merged ASAP. Signed-off-by:
David Woodhouse <David.Woodhouse@intel.com> Signed-off-by:
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David Woodhouse authored
I won't say 'fix', because they still look broken, although this will at least allow 'make ARCH=CRIS headers_install' to _complete_. For headers which are exported, we should probably choose between asm/arch-v10 and asm/arch-v32 by something that GCC defines -- we can't rely on a generated symlink. And we certainly can't export an arch/ directory which doesn't even exist. And the only thing that we seem to include from the arch/ directory is <asm/arch/ptrace.h> from <asm/ptrace.h> ... and that isn't exported in either arch-v10 or arch-v32 _anyway_. Signed-off-by:
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