- 26 9月, 2006 40 次提交
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由 David Howells 提交于
Make the FRV arch use the generic IRQ code rather than having its own routines for doing so. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andrew Morton 提交于
As David Howells <dhowells@redhat.com> points out, binfmt_elf sometimes uses off_t, sometimes uses loff_t. Use loff_t throughout. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Smalley 提交于
Take tty_mutex when accessing ->signal->tty in selinux code. Noted by Alan Cox. Longer term, we are looking at refactoring the code to provide better encapsulation of the tty layer, but this is a simple fix that addresses the immediate bug. Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NAlan Cox <alan@redhat.com> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric Paris 提交于
This patch converts the semaphore in the superblock security struct to a mutex. No locking changes or other code changes are done. Signed-off-by: NEric Paris <eparis@redhat.com> Acked-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric Paris 提交于
This patch converts the remaining isec->sem into a mutex. Very similar locking is provided as before only in the faster smaller mutex rather than a semaphore. An out_unlock path is introduced rather than the conditional unlocking found in the original code. Signed-off-by: NEric Paris <eparis@redhat.com> Acked-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric Paris 提交于
inode_security_set_sid is only called by security_inode_init_security, which is called when a new file is being created and needs to have its incore security state initialized and its security xattr set. This helper used to be called in other places in the past, but now only has the one. So this patch rolls inode_security_set_sid directly back into security_inode_init_security. There also is no need to hold the isec->sem while doing this, as the inode is not available to other threads at this point in time. Signed-off-by: NEric Paris <eparis@redhat.com> Acked-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Darrel Goeddel 提交于
Introduces support for policy version 21. This version of the binary kernel policy allows for defining range transitions on security classes other than the process security class. As always, backwards compatibility for older formats is retained. The security class is read in as specified when using the new format, while the "process" security class is assumed when using an older policy format. Signed-off-by: NDarrel Goeddel <dgoeddel@trustedcs.com> Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Acked-by: NEric Paris <eparis@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Smalley 提交于
Enable configuration of SELinux maximum supported policy version to support legacy userland (init) that does not gracefully handle kernels that support newer policy versions two or more beyond the installed policy, as in FC3 and FC4. [bunk@stusta.de: improve Kconfig help text] Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Acked-by: NEric Paris <eparis@redhat.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Smalley 提交于
Replace ctxid with sid in selinux_audit_rule_match interface for consistency with other interfaces. Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Smalley 提交于
Rename selinux_ctxid_to_string to selinux_sid_to_string to be consistent with other interfaces. Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Smalley 提交于
Eliminate selinux_task_ctxid since it duplicates selinux_task_get_sid. Signed-off-by: NStephen Smalley <sds@tycho.nsa.gov> Acked-by: NJames Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
There are many places where we need to determine the node of a zone. Currently we use a difficult to read sequence of pointer dereferencing. Put that into an inline function and use throughout VM. Maybe we can find a way to optimize the lookup in the future. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
I found two location in hugetlb.c where we chase pointer instead of using page_to_nid(). Page_to_nid is more effective and can get the node directly from page flags. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ram Gupta 提交于
Update the comments for __oom_kill_task() to reflect the code changes. Signed-off-by: NRam Gupta <r.gupta@astronautics.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
Minor performance fix. If we reclaimed enough slab pages from a zone then we can avoid going off node with the current allocation. Take care of updating nr_reclaimed when reclaiming from the slab. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
Currently one can enable slab reclaim by setting an explicit option in /proc/sys/vm/zone_reclaim_mode. Slab reclaim is then used as a final option if the freeing of unmapped file backed pages is not enough to free enough pages to allow a local allocation. However, that means that the slab can grow excessively and that most memory of a node may be used by slabs. We have had a case where a machine with 46GB of memory was using 40-42GB for slab. Zone reclaim was effective in dealing with pagecache pages. However, slab reclaim was only done during global reclaim (which is a bit rare on NUMA systems). This patch implements slab reclaim during zone reclaim. Zone reclaim occurs if there is a danger of an off node allocation. At that point we 1. Shrink the per node page cache if the number of pagecache pages is more than min_unmapped_ratio percent of pages in a zone. 2. Shrink the slab cache if the number of the nodes reclaimable slab pages (patch depends on earlier one that implements that counter) are more than min_slab_ratio (a new /proc/sys/vm tunable). The shrinking of the slab cache is a bit problematic since it is not node specific. So we simply calculate what point in the slab we want to reach (current per node slab use minus the number of pages that neeed to be allocated) and then repeately run the global reclaim until that is unsuccessful or we have reached the limit. I hope we will have zone based slab reclaim at some point which will make that easier. The default for the min_slab_ratio is 5% Also remove the slab option from /proc/sys/vm/zone_reclaim_mode. [akpm@osdl.org: cleanups] Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
Remove the atomic counter for slab_reclaim_pages and replace the counter and NR_SLAB with two ZVC counter that account for unreclaimable and reclaimable slab pages: NR_SLAB_RECLAIMABLE and NR_SLAB_UNRECLAIMABLE. Change the check in vmscan.c to refer to to NR_SLAB_RECLAIMABLE. The intend seems to be to check for slab pages that could be freed. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
*_pages is a better description of the role of the variable. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
The allocpercpu functions __alloc_percpu and __free_percpu() are heavily using the slab allocator. However, they are conceptually slab. This also simplifies SLOB (at this point slob may be broken in mm. This should fix it). Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
If a zone is unpopulated then we do not need to check for pages that are to be drained and also not for vm counters that may need to be updated. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
Free one_page currently adds the page to a fake list and calls free_page_bulk. Fee_page_bulk takes it off again and then calles __free_one_page. Make free_one_page go directly to __free_one_page. Saves list on / off and a temporary list in free_one_page for higher ordered pages. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Dave McCracken 提交于
One of the changes necessary for shared page tables is to standardize the pxx_page macros. pte_page and pmd_page have always returned the struct page associated with their entry, while pte_page_kernel and pmd_page_kernel have returned the kernel virtual address. pud_page and pgd_page, on the other hand, return the kernel virtual address. Shared page tables needs pud_page and pgd_page to return the actual page structures. There are very few actual users of these functions, so it is simple to standardize their usage. Since this is basic cleanup, I am submitting these changes as a standalone patch. Per Hugh Dickins' comments about it, I am also changing the pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning. Signed-off-by: NDave McCracken <dmccr@us.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Siddha, Suresh B 提交于
On High end systems (1024 or so cpus) this can potentially cause stack overflow. Fix the stack usage. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
In many places we will need to use the same combination of flags. Specify a single GFP_THISNODE definition for ease of use in gfp.h. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
Profiling really suffers with off node buffers. Fail if no memory is available on the nodes. The profiling code can deal with these failures should they occur. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
There are frequent references to *z in get_page_from_freelist. Add an explicit zone variable that can be used in all these places. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
The uncached allocator manages per node pools. Specify __GFP_THISNODE in order to force allocation on the indicated node or fail. The uncached allocator has already logic to deal with failing allocations. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
If the user specified a node where we should move the page to then we really do not want any other node. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
[PATCH] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions Add a new gfp flag __GFP_THISNODE to avoid fallback to other nodes. This flag is essential if a kernel component requires memory to be located on a certain node. It will be needed for alloc_pages_node() to force allocation on the indicated node and for alloc_pages() to force allocation on the current node. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ravikiran G Thirumalai 提交于
Place the alien array cache locks of on slab malloc slab caches on a seperate lockdep class. This avoids false positives from lockdep [akpm@osdl.org: build fix] Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org> Signed-off-by: NShai Fultheim <shai@scalex86.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
It is fairly easy to get a system to oops by simply sizing a cache via /proc in such a way that one of the chaches (shared is easiest) becomes bigger than the maximum allowed slab allocation size. This occurs because enable_cpucache() fails if it cannot reallocate some caches. However, enable_cpucache() is used for multiple purposes: resizing caches, cache creation and bootstrap. If the slab is already up then we already have working caches. The resize can fail without a problem. We just need to return the proper error code. F.e. after this patch: # echo "size-64 10000 50 1000" >/proc/slabinfo -bash: echo: write error: Cannot allocate memory notice no OOPS. If we are doing a kmem_cache_create() then we also should not panic but return -ENOMEM. If on the other hand we do not have a fully bootstrapped slab allocator yet then we should indeed panic since we are unable to bring up the slab to its full functionality. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
The ability to free memory allocated to a slab cache is also useful if an error occurs during setup of a slab. So extract the function. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Hellwig 提交于
[akpm@osdl.org: export fix] Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
Let's try to keep mm/ comments more useful and up to date. This is a start. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ravikiran G Thirumalai 提交于
Also, checks if we get a valid slabp_cache for off slab slab-descriptors. We should always get this. If we don't, then in that case we, will have to disable off-slab descriptors for this cache and do the calculations again. This is a rare case, so add a BUG_ON, for now, just in case. Signed-off-by: NAlok N Kataria <alok.kataria@calsoftinc.com> Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org> Signed-off-by: NShai Fultheim <shai@scalex86.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Heiko Carstens 提交于
Introduce ARCH_LOW_ADDRESS_LIMIT which can be set per architecture to override the 4GB default limit used by the bootmem allocater within __alloc_bootmem_low() and __alloc_bootmem_low_node(). E.g. s390 needs a 2GB limit instead of 4GB. Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
Print the name of the task invoking the OOM killer. Could make debugging easier. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
Skip kernel threads, rather than having them return 0 from badness. Theoretically, badness might truncate all results to 0, thus a kernel thread might be picked first, causing an infinite loop. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
PF_SWAPOFF processes currently cause select_bad_process to return straight away. Instead, give them high priority, so we will kill them first, however we also first ensure no parallel OOM kills are happening at the same time. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
Having the oomkilladj == OOM_DISABLE check before the releasing check means that oomkilladj == OOM_DISABLE tasks exiting will not stop the OOM killer. Moving the test down will give the desired behaviour. Also: it will allow them to "OOM-kill" themselves if they are exiting. As per the previous patch, this is required to prevent OOM killer deadlocks (and they don't actually get killed, because they're already exiting -- they're simply allowed access to memory reserves). Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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