- 13 Mar, 2005 40 commits
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Jesper Juhl authored
Improve readability after verify_area to access_ok conversion. The new code was pretty ugly - this should be a bit better. Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Jesper Juhl authored
The previous 9 patches should take care of converting all callers of verify_area into access_ok, so now it's time to deprecate verify_area all over so noone gets tempted to use it in new code - this patch does that. Eventually when this has been deprecated for a while I'll send patches to completely remove the function (thoughts on how long it should be deprecated first are welcome). Signed-off-by:
Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by:
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Jesper Juhl authored
The last remaining archs that have not already been converted from verify_area to access_ok by the previous patches are all taken care of by this one. Signed-off-by:
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Jesper Juhl authored
This is the patch that converts verify_area to access_ok for the x86_64 and ia64 archs. Signed-off-by:
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Jesper Juhl authored
This patch converts verify_area to access_ok for sparc and sparc64. Signed-off-by:
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Jesper Juhl authored
Convert verify_area to access_ok for ppc, ppc64, m68k and m68knommu Signed-off-by:
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Jesper Juhl authored
This is the patch to convert verify_area to access_ok for arch/mips Signed-off-by:
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Jesper Juhl authored
This patch converts verify_area to access_ok in arch/i386, fs/, kernel/ and a few other bits that didn't fit in the other patches or that I actually was able to test on my hardware - this is by far the best tested of all the patches. Signed-off-by:
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Adrian Bunk authored
This patch removes an unused variable. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Jesper Juhl authored
This patch converts verify_area to access_ok in sound/ Signed-off-by:
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Jesper Juhl authored
This patch converts the second half of drivers from verify_area to access_ok. Signed-off-by:
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Jesper Juhl authored
This patch converts the first half of drivers from verify_area to access_ok. Signed-off-by:
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Prasanna Meda authored
Sysfs mount error path sanity work. Perhaps we can panic here, but did not want to disturb the code here. Signed-off-by:
Prasanna Meda <pmeda@akamai.com> Signed-off-by:
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Prasanna Meda authored
pivot_root works with five nami data structures, I would like add the minimal documentation to the code to make things clear. Signed-Off-by:
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Andrew Morton authored
security/built-in.o(.text+0xe2fc): In function `selinux_socket_bind': : undefined reference to `sysctl_local_port_range' Acked-by:
James Morris <jmorris@redhat.com> Signed-off-by:
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Matt Mackall authored
Clarify the BASE_FULL help text. Signed-off-by:
Matt Mackall <mpm@selenic.com> Signed-off-by:
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Matt Mackall authored
Minor type cleanup. Signed-off-by:
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Thierry Vignaud authored
Add lots of MODULE_DEVICE_TABLE entries. Signed-off-by:
Thierry Vignaud <tvignaud@mandrakesoft.com> Signed-off-by:
Greg Kroah-Hartman <greg@kroah.com> Signed-off-by:
Vojtech Pavlik <vojtech@suse.cz> Acked-by:
Jeff Garzik <jgarzik@pobox.com> Signed-off-by:
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Adrian Bunk authored
We seem to have two CONFIG_DEBUG_INFO entries in Kconfig.debug. Signed-off-by:
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Jan Kara authored
Allow admin to enable only some of the Magic-Sysrq functions. This allows admin to disable sysrq functions he considers dangerous (e.g. sending kill signal, remounting fs RO) while keeping the possibility to use the others (e.g. debug deadlocks by dumps of processes etc.). Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Stefan Seyfried authored
In platform swsusp mode, we were forgetting to spin disks down, leading to ugly emergency shutdown. This synchronizes platform method with other methods and actually helps. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Pavel Machek authored
From: <mjg59@scrf.ucam.org> When using a fully modularized kernel it is necessary to activate resume manually as the device node might not be available during kernel init. This patch implements a new sysfs attribute '/sys/power/resume' which allows for manual activation of software resume. When read from it prints the configured resume device in 'major:minor' format. When written to it expects a device in 'major:minor' format. This device is then checked for a suspended image and resume is started if a valid image is found. The original functionality is left in place. It should be used from initramfs, or with care. Signed-off-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Pavel Machek authored
This patch contains the necessary changes to the assembly routines etc. for ppc. It depends on the main resume part. It's a Hu Gang's patch. From: Hu Gang <hugang@soulinfo.com> Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by:
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Pavel Machek authored
The following patch is designed to fix a problem in the current implementation of swsusp in mainline kernels. Namely, swsusp uses an array of page backup entries (aka pagedir) to store pointers to memory pages that must be saved during suspend and restored during resume. Unfortunately, the pagedir has to be located in a contiguous chunk of memory and it sometimes turns out that an 8-order or even 9-order allocation is needed for this purpose. It sometimes is impossible to get such an allocation and swsusp may fail during either suspend or resume due to the lack of memory, although theoretically there is enough free memory for it to succeed. Moreover, swsusp is more likely to fail for this reason during resume, which means that it may fail during resume after a successful suspend (this actually has happened for some people, including me :-)) and this, potentially, may lead to the loss of data. The problem is fixed by replacing the pagedir with a linklist so that high-order memory allocations are avoided (the patches make swsusp use only 0-order allocations). Unfortunately this means that it's necessary to change assembly routines used to restore the image after it's been loaded from swap so that they walk the list instead of walking the array. This patch makes swsusp allocate only individual pages during resume. it contains the necessary changes to the assembly routines etc. for i386 and x86-64. Signed-off-by:
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Mike Kravetz authored
When I booted my new 720 on a kernel configured for NUMA, I received the following during bootup: WARNING: Unexpected node layout: region start 44000000 length 2000000 NUMA is disabled This is due to memory 'holes' within nodes. If such holes are encountered, then NUMA is disabled. The following patch adds support for such configurations. This patch gets the cell sizes before extracting the cells. I have made this change to existing code in the file, as well as the code I added. Signed-off-by:
Mike Kravetz <kravetz@us.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Kumar Gala authored
Removed the Special purpose register (SPR) short-hand defines to help with name space pollution. All SPRs are now referenced as SPRN_<foo>. Signed-off-by:
Kumar Gala <kumar.gala@freescale.com> Signed-off-by:
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Kumar Gala authored
Some Book-E implementations (e500) do not implement the userland load/store string instructions. Apparently these instructions are rather painful to implement do to the fact that they modify the destination register differently then ever other instruction. Matt did the inital work some time ago, and I finally got around to cleaning it up. Signed-off-by: Matt McClintock Signed-off-by:
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Mark A. Greer authored
- Set up mtd partition from arch-specific platform file and remove obsoleted mtd map. - Update default config file (now enables embedded ethernet driver). - Make some minor fixups. - General code cleanup. Signed-off-by:
Mark A. Greer <mgreer@mvista.com> Signed-off-by:
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Roland McGrath authored
We're currently not including sysv shared memory segments in coredumps. This patch intends to include any shared mapping whose target file has zero links. That covers sysv shm and MAP_ANON|MAP_SHARED mmap's (which I think are only ever useful if you want to share pages with a fork'd child). I think it also covers a regular file that was unlinked but is still mmap'd. It doesn't cover mapping of a tmpfs file like /dev/shm/foo, but those are still available to be seen after your program crashes, until reboot. Note that this still omits plenty of cases that the old code would include, such as all writable shared mappings of regular files. It also will include some arcane cases the old one wouldn't, like a read-only shared mapping of an unlinked file; that comes up e.g., for the text segment of a shared library or executable that was removed/renamed-over while still in use. Signed-off-by:
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Dave Hansen authored
So, this patch started out with me trying to keep from passing contiguous, node-specific mem_map into free_area_init_node() and cousins. Instead, I relied on some calls to pfn_to_page(). This works fine and dandy when all you need is the pgdat->node_mem_map to do pfn_to_page(). However, the non-NUMA/DISCONTIG architectures use the real, global mem_map[] instead of a node_mem_map in the pfn_to_page() calculation. So, I ended up effectively trying to initialize mem_map from itself, when it was NULL. That was bad, and caused some very pretty colors on someone's screen when he tested it. So, I had to make sure to initialize the global mem_map[] before calling into free_area_init_node(). Then, I realized how many architectures do this on their own, and have comments like this: /* XXX: MRB-remove - this doesn't seem sane, should this be done somewhere else ?*/ mem_map = NODE_DATA(0)->node_mem_map; The following patch does what my first one did (don't pass mem_map into the init functions), incorporates Jesse Barnes' ia64 fixes on top of that, and gets rid of all but one of the global mem_map initializations (parisc is weird). It also magically removes more code than it adds. It could be smaller, but I shamelessly added some comments. Boot-tested on ppc64, i386 (NUMAQ, plain SMP, laptop), UML (i386). Signed-off-by:Dave Hansen <haveblue@us.ibm.com> Signed-off-by:
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Oleg Nesterov authored
This patch assumes that there is no valid usage of vmalloced_or_vmaped_page->lru. In such a case vm_struct->array could be eliminated. It saves some memory and simplifies code a bit. In vmap/vunmap case vm_struct->page_list is used only in map_vm_area(), so it is ok to do: addr1 = vmap(pages, count); addr2 = vmap(pages, count); ... vunmap(addr1); vunmap(addr2); Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
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Oleg Nesterov authored
Replace open coded __vmalloc() with __vmalloc_area(). Uncompiled, untested. Signed-off-by:
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Oleg Nesterov authored
Replace open coded __vmalloc() with __vmalloc_area(). Uncompiled, untested. Signed-off-by:
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Oleg Nesterov authored
Replace open coded __vmalloc() with __vmalloc_area(). Signed-off-by:
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Oleg Nesterov authored
There are 3 copy-and-paste implementations of __vmalloc() in arch/{arm,sparc64,x86_64}/kernel/module.c. I believe the only reason is that __vmalloc() doesn't allow to specify parameters of __get_vm_area(). This patch splits __vmalloc() into 2 functions. The new one, __vmalloc_area(), can be used as follows: vm_struct *area = __get_vm_area(...); void *addr = __vmalloc_area(area, gfp, prot); Signed-off-by: -
Hugh Dickins authored
Nick Piggin's patch to fold away most of the pud and pmd levels when not required. Adjusted to define minimal pud_addr_end (in the 4LEVEL_HACK case too) and pmd_addr_end. Responsible for half of the savings. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Hugh Dickins authored
As a general rule, ask the compiler to inline action_on_pmd_range and action_on_pud_range: they're none very interesting, and it has a better chance of eliding them that way. But conversely, it helps debug traces if action_on_pte_range and top action_on_page_range remain uninlined. Signed-off-by:
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Hugh Dickins authored
To handle large sparse areas a little more efficiently, follow Nick and move the p?d_none_or_clear_bad tests up from the start of each function to its callsite. Signed-off-by:
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Hugh Dickins authored
Convert clear_page_range pagetable walkers to loops using p?d_addr_end. These are exceptional in that some out-of-tree memory layouts might pass end 0, so the macros need to handle that (though previous code did not). The naming here was out of step: now we usually pass pmd_t *pmd down to action_on_pte_range, not action_on_pmd_range, etc: made like the others. Signed-off-by:
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Hugh Dickins authored
This patch is the odd-one-out of the sequence. The one before adjusted copy_pte_range from a for loop to a do while loop, and it was therefore simplest to check for lockbreak before copying pte: possibility that it might keep getting preempted without making progress under some loads. Some loads such as startup: 2*HT*P4 with preemption cannot even reach multiuser login. Suspect needs_lockbreak is broken, can get in a state when it remains forever true. Investigate that later: for now, and for all time, it makes sense to aim for a little progress before breaking out; and we can manage more pte_nones than copies. Signed-off-by:
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