- 16 Jul, 2007 40 commits
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Jeff Dike authored
Add generic exit-time stack-depth checking to CONFIG_DEBUG_STACK_USAGE. This also adds UML support. Tested on UML and i386. [akpm@linux-foundation.org: cleanups, speedups, tweaks] Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jeff Dike authored
For some reason, I was using kmalloc instead of get_free_pages for kernel stacks. Signed-off-by:
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Jeff Dike authored
It is theoretically possible for a request to finish and be freed between writing it to the I/O thread and updating the sector count. In this case, the update will dereference a freed pointer. To avoid this, I delay the update until processing the next sg segment, when the request pointer is known to be good. Signed-off-by:
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Robert P. J. Day authored
Replace the old-style structure member initializers with designated initializers. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Alan Cox authored
Add the needed constants and bits. The actual code is already in the tty layer and turned on by the definitions Signed-off-by:
Alan Cox <alan@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Hirokazu Takata authored
Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Alan Cox authored
Add the defines and constants needed for the M32R platform to support the arbitary speed tty ioctls. Signed-off-by:
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Mariusz Kozlowski authored
Signed-off-by:
Mariusz Kozlowski <m.kozlowski@tuxland.pl> Cc: Ian Molton <spyro@f2s.com> Signed-off-by:
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Alan Cox authored
Add the ioctls and values needed for this to the ARM26/ARM32 ports. The actual code has been in the base kernel for a while and automatically turns on when a port sets the required defines. Signed-off-by:
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Ivan Kokshaysky authored
isa_bus_to_virt() is still needed in a few places (lance.c, at least). When we switch the kernel to using -Werror-implicit-function-declaration, the lack of isa_bus_to_virt() breaks alpha allmodconfig builds. Add isa_bus_to_virt() and deprecate the ezisting ISA APIs, though it might be better to define these functions as BUG(), since virt_to_bus/bus_to_virt just do wrong things on a number of machines. [akpm@linux-foundation.org: build fix] Signed-off-by:
Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Sam Ravnborg authored
Fix the following section mismatch warnings: WARNING: arch/alpha/kernel/built-in.o(.text+0x7c78): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt') WARNING: arch/alpha/kernel/built-in.o(.text+0x7c7c): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt') WARNING: arch/alpha/kernel/built-in.o(.data+0x2c30): Section mismatch: reference to .init.text:srm_console_setup (between 'srmcons' and 'tsunami_pci_ops') In all three cases functions marked __init was called outside __init context. So the fix was to just drop the __init attribute. Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Meelis Roos <mroos@linux.ee> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Yoshinori Sato authored
Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Yoshinori Sato authored
arch/h8300/kernel/ints.c is unused. Signed-off-by:
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Yoshinori Sato authored
- Add missing files - Add Makefile target - Change image base - Style fix Signed-off-by:
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Alan Cox authored
Add the needed constants and defines to activate the new tty code on this platform Signed-off-by:
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Greg Ungerer authored
Remove cache management cruft. This code is dead, all the cache manangement functions for the ColdFire exist in the header file include/asm-m68knommu/cacheflush.h. Signed-off-by:
Greg Ungerer <gerg@uclinux.org> Signed-off-by:
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Greg Ungerer authored
Clean out cruft. . remove include files not needed . remove not used CAT_ROMARRAY code . remove generic machine pointers not used . remove unused functions . fix email address in copyrights Signed-off-by:
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Greg Ungerer authored
Use THREAD_SIZE instead of a hard constant. Signed-off-by:
Philippe De Muyter <phdm@macqel.be> Signed-off-by:
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Greg Ungerer authored
Be consistent with VM mmap, implement expand_stack(). We can't actually do anything other than return an error in the no MMU case though. Signed-off-by:
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David Howells authored
Remove some dead chunks of code that are bounded by preprocessor conditionals controlled by apparently no-longer available config options. These are: CONFIG_BLK_DEV_BLKMEM CONFIG_CHR_DEV_FLASH CONFIG_BLK_DEV_FLASH CONFIG_CONSOLE [Found by Robert P. J. Day <rpjday@mindspring.com>] Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Be (self-)consistent and use CONFIG_GDB_CONSOLE everywhere rather than using CONFIG_GDBSTUB_CONSOLE in some places and not others. This is also then consistent with other archs. Also remove the gdbstub console device() op which doesn't seem to be necessary now (especially as it doesn't compile). [Found by Robert P. J. Day <rpjday@mindspring.com>] Signed-off-by:
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David Howells authored
Connect up new system calls. Signed-off-by:
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Miklos Szeredi authored
This is a straightforward split of do_mmap_pgoff() into two functions: - do_mmap_pgoff() checks the parameters, and calculates the vma flags. Then it calls - mmap_region(), which does the actual mapping Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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akpm@linux-foundation.org authored
The do_loop_readv_writev implementation of readv breaks out of the loop as soon as a single read request didn't fill it's buffer: if (nr != len) break; The generic_file_aio_read version doesn't. So if it hits EOF before the end of the list of buffers, it will try again on the next buffer. If the file was extended in the mean time, this will produce a bad result. Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
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Herbert van den Bergh authored
Fix a bug in mm/mlock.c on 32-bit architectures that prevents a user from locking more than 4GB of shared memory, or allocating more than 4GB of shared memory in hugepages, when rlim[RLIMIT_MEMLOCK] is set to RLIM_INFINITY. Signed-off-by:
Herbert van den Bergh <herbert.van.den.bergh@oracle.com> Acked-by:
Chris Mason <chris.mason@oracle.com> Cc: <stable@kernel.org> Signed-off-by:
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Paul Mundt authored
Currently slob is disabled if we're using sparsemem, due to an earlier patch from Goto-san. Slob and static sparsemem work without any trouble as it is, and the only hiccup is a missing slab_is_available() in the case of sparsemem extreme. With this, we're rid of the last set of restrictions for slob usage. Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Acked-by:
Pekka Enberg <penberg@cs.helsinki.fi> Acked-by:
Matt Mackall <mpm@selenic.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Hugh Dickins authored
mspec_mmap was setting VM_LOCKED (without adjusting locked_vm): don't do that, it serves no purpose in 2.6, other than to mess up the locked_vm accounting - mspec's pages won't get reclaimed anyway. Thanks to Dmitry Monakhov for raising the issue. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Acked-by:
Jes Sorensen <jes@sgi.com> Cc: Dmitry Monakhov <dmonakhov@sw.ru> Signed-off-by:
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Dan Aloni authored
Signed-off-by:
Dan Aloni <da-x@monatomic.org> Signed-off-by:
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Paul Mundt authored
This adds preliminary NUMA support to SLOB, primarily aimed at systems with small nodes (tested all the way down to a 128kB SRAM block), whether asymmetric or otherwise. We follow the same conventions as SLAB/SLUB, preferring current node placement for new pages, or with explicit placement, if a node has been specified. Presently on UP NUMA this has the side-effect of preferring node#0 allocations (since numa_node_id() == 0, though this could be reworked if we could hand off a pfn to determine node placement), so single-CPU NUMA systems will want to place smaller nodes further out in terms of node id. Once a page has been bound to a node (via explicit node id typing), we only do block allocations from partial free pages that have a matching node id in the page flags. The current implementation does have some scalability problems, in that all partial free pages are tracked in the global freelist (with contention due to the single spinlock). However, these are things that are being reworked for SMP scalability first, while things like per-node freelists can easily be built on top of this sort of functionality once it's been added. More background can be found in: http://marc.info/?l=linux-mm&m=118117916022379&w=2 http://marc.info/?l=linux-mm&m=118170446306199&w=2 http://marc.info/?l=linux-mm&m=118187859420048&w=2 and subsequent threads. Acked-by:
Christoph Lameter <clameter@sgi.com> Acked-by:
Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Jason Baron authored
In the new madvise_need_mmap_write() call we can avoid an extra case statement and function call as follows. Signed-off-by:
Jason Baron <jbaron@redhat.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Adrian Bunk authored
start_cpu_timer() should be __cpuinit (which also matches what it's callers are). __devinit didn't cause problems, it simply wasted a few bytes of memory for the common CONFIG_HOTPLUG_CPU=n case. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Paul Mundt authored
Currently zone_spanned_pages_in_node() and zone_absent_pages_in_node() are non-static for ARCH_POPULATES_NODE_MAP and static otherwise. However, only the non-static versions are __meminit annotated, despite only being called from __meminit functions in either case. zone_init_free_lists() is currently non-static and not __meminit annotated either, despite only being called once in the entire tree by init_currently_empty_zone(), which too is __meminit. So make it static and properly annotated. Signed-off-by:
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Jan Beulich authored
This symbol got orphaned quite a while ago. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Jan Beulich authored
Kill pte_rdprotect(), pte_exprotect(), pte_mkread(), pte_mkexec(), pte_read(), pte_exec(), and pte_user() except where arch-specific code is making use of them. Signed-off-by:
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Jan Beulich authored
.. which modpost started warning about. Signed-off-by:
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Paul Mundt authored
Enabling debugging fails to build due to the nodemask variable in do_mbind() having changed names, and then oopses on boot due to the assumption that the nodemask can be dereferenced -- which doesn't work out so well when the policy is changed to MPOL_DEFAULT with a NULL nodemask by numa_default_policy(). This fixes it up, and switches from PDprintk() to pr_debug() while we're at it. Signed-off-by:
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Ethan Solomita authored
get_user_pages() can try to allocate a nearly unlimited amount of memory on behalf of a user process, even if that process has been OOM killed. The OOM kill occurs upon return to user space via a SIGKILL, but get_user_pages() will try allocate all its memory before returning. Change get_user_pages() to check for TIF_MEMDIE, and if set then return immediately. Signed-off-by:
Ethan Solomita <solo@google.com> Signed-off-by:
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Paul Mundt authored
This converts the default system init memory policy to use a dynamically created node map instead of defaulting to all online nodes. Nodes of a certain size (>= 16MB) are judged to be suitable for interleave, and are added to the map. If all nodes are smaller in size, the largest one is automatically selected. Without this, tiny nodes find themselves out of memory before we even make it to userspace. Systems with large nodes will notice no change. Only the system init policy is effected by this change, the regular MPOL_DEFAULT policy is still switched to later on in the boot process as normal. Signed-off-by:
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Christoph Lameter authored
Add a new configuration variable CONFIG_SLUB_DEBUG_ON If set then the kernel will be booted by default with slab debugging switched on. Similar to CONFIG_SLAB_DEBUG. By default slab debugging is available but must be enabled by specifying "slub_debug" as a kernel parameter. Also add support to switch off slab debugging for a kernel that was built with CONFIG_SLUB_DEBUG_ON. This works by specifying slub_debug=- as a kernel parameter. Dave Jones wanted this feature. http://marc.info/?l=linux-kernel&m=118072189913045&w=2 [akpm@linux-foundation.org: clean up switch statement] Signed-off-by:
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Andrew Morton authored
invalidate_mapping_pages() can sometimes take a long time (millions of pages to free). Long enough for the softlockup detector to trigger. We used to have a cond_resched() in there but I took it out because the drop_caches code calls invalidate_mapping_pages() under inode_lock. The patch adds a nasty flag and puts the cond_resched() back. Signed-off-by:
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