AgeCommit message (Collapse)Author
2006-03-20[PATCH] add EXPORT_SYMBOL_GPL_FUTURE()Greg Kroah-Hartman
This patch adds the ability to mark symbols that will be changed in the future, so that kernel modules that don't include MODULE_LICENSE("GPL") and use the symbols, will be flagged and printed out to the system log. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] Clean up module.c symbol searching logicSam Ravnborg
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] kobj_map semaphore to mutex conversionJes Sorensen
Convert the kobj_map code to use a mutex instead of a semaphore. It converts the single two users as well, genhd.c and char_dev.c. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] kref: avoid an atomic operation in kref_put()Eric Dumazet
Avoid an atomic operation in kref_put() when the last reference is dropped. On most platforms, atomic_read() is a plan read of the counter and involves no atomic at all. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] handle errors returned by platform_get_irq*()David Vrabel
platform_get_irq*() now returns on -ENXIO when the resource cannot be found. Ensure all users of platform_get_irq*() handle this error appropriately. Signed-off-by: David Vrabel <dvrabel@arcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] driver core: platform_get_irq*(): return -ENXIO on errorDavid Vrabel
platform_get_irq*() cannot return 0 on error as 0 is a valid IRQ on some platforms, return -ENXIO instead. Signed-off-by: David Vrabel <dvrabel@arcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] Mark empty release functions as brokenGreg Kroah-Hartman
Come on people, this is just wrong... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] kobject: fix build error if CONFIG_SYSFS=nJun'ichi Nomura
Moving uevent_seqnum and uevent_helper to kobject_uevent.c because they are used even if CONFIG_SYSFS=n while kernel/ksysfs.c is built only if CONFIG_SYSFS=y, Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] sysfs: sysfs_remove_dir() needs to invalidate the dentryGreg Kroah-Hartman
When calling sysfs_remove_dir() don't allow any further sysfs functions to work for this kobject anymore. This fixes a nasty USB cdc-acm oops on disconnect. Many thanks to Bob Copeland and Paul Fulghum for taking the time to track this down. Cc: Bob Copeland <email@bobcopeland.com> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (230 commits) [SPARC64]: Update defconfig. [SPARC64]: Fix 2 bugs in huge page support. [SPARC64]: CONFIG_BLK_DEV_RAM fix [SPARC64]: Optimized TSB table initialization. [SPARC64]: Allow CONFIG_MEMORY_HOTPLUG to build. [SPARC64]: Use SLAB caches for TSB tables. [SPARC64]: Don't kill the page allocator when growing a TSB. [SPARC64]: Randomize mm->mmap_base when PF_RANDOMIZE is set. [SPARC64]: Increase top of 32-bit process stack. [SPARC64]: Top-down address space allocation for 32-bit tasks. [SPARC64] bbc_i2c: Fix cpu check and add missing module license. [SPARC64]: Fix and re-enable dynamic TSB sizing. [SUNSU]: Fix missing spinlock initialization. [TG3]: Do not try to access NIC_SRAM_DATA_SIG on Sun parts. [SPARC64]: First cut at VIS simulator for Niagara. [SPARC64]: Fix system type in /proc/cpuinfo and remove bogus OBP check. [SPARC64]: Add SMT scheduling support for Niagara. [SPARC64]: Fix 32-bit truncation which broke sparsemem. [SPARC64]: Move over to sparsemem. [SPARC64]: Fix new context version SMP handling. ...
2006-03-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: add uid, gid, and umask mount options JFS: Take logsync lock before testing mp->lsn JFS: kzalloc conversion JFS: Add missing file from fa3241d24cf1182b0ffb6e4d412c3bc2a2ab7bf6 JFS: Use the kthread_ API JFS: Fix regression. fsck complains if symlinks do not have INLINEEA attribute JFS: ext2 inode attributes for jfs JFS: semaphore to mutex conversion. JFS: make buddy table static JFS: Add back directory i_size calculations for legacy partitions
2006-03-20Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (150 commits) [PATCH] ipw2100: Update version ipw2100 stamp to 1.2.2 [PATCH] ipw2100: move mutex.h include from ipw2100.c to ipw2100.h [PATCH] ipw2100: semaphore to mutexes conversion [PATCH] ipw2100: Fix radiotap code gcc warning [PATCH] ipw2100: add radiotap headers to packtes captured in monitor mode [PATCH] ipw2x00: expend Copyright to 2006 [PATCH] drivers/net/wireless/ipw2200.c: fix an array overun [PATCH] ieee80211: Don't update network statistics from off-channel packets. [PATCH] ipw2200: Update ipw2200 version stamp to 1.1.1 [PATCH] ipw2200: switch to the new ipw2200-fw-3.0 image format [PATCH] ipw2200: wireless extension sensitivity threshold support [PATCH] ipw2200: Enables the "slow diversity" algorithm [PATCH] ipw2200: Set a meaningful silence threshold value [PATCH] ipw2200: export `debug' module param only if CONFIG_IPW2200_DEBUG [PATCH] ipw2200: Change debug level for firmware error logging [PATCH] ipw2200: Filter unsupported channels out in ad-hoc mode [PATCH] ipw2200: Fix ipw_sw_reset() implementation inconsistent with comment [PATCH] ipw2200: Fix rf_kill is activated after mode change with 'disable=1' [PATCH] ipw2200: remove the WPA card associates to non-WPA AP checking [PATCH] ipw2200: Add signal level to iwlist scan output ...
2006-03-20Merge branch 'block-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/block * 'block-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/block: [PATCH] fix rmmod problems with elevator attributes, clean them up [PATCH] elevator_t lifetime rules and sysfs fixes [PATCH] noise removal: cfq-iosched.c [PATCH] don't bother with refcounting for cfq_data [PATCH] fix sysfs interaction and lifetime rules handling for queues [PATCH] regularize blk_cleanup_queue() use [PATCH] fix cfq_get_queue()/ioprio_set(2) races [PATCH] deal with rmmod/put_io_context() races [PATCH] stop elv_unregister() from rogering other iosched's data, fix locking [PATCH] stop cfq from pinning queue down [PATCH] make cfq_exit_queue() prune the cfq_io_context for that queue [PATCH] fix the exclusion for ioprio_set() [PATCH] keep sync and async cfq_queue separate [PATCH] switch to use of ->key to get cfq_data by cfq_io_context [PATCH] stop leaking cfq_data in cfq_set_request() [PATCH] fix cfq hash lookups [PATCH] fix locking in queue_requests_store() [PATCH] fix double-free in blk_init_queue_node() [PATCH] don't do exit_io_context() until we know we won't be doing any IO
2006-03-20Merge branch 'upstream' of ↵Jeff Garzik
2006-03-20Merge branch 'master'Jeff Garzik
2006-03-20[SPARC64]: Update defconfig.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix 2 bugs in huge page support.David S. Miller
1) huge_pte_offset() did not check the page table hierarchy elements as being empty correctly, resulting in an OOPS 2) Need platform specific hugetlb_get_unmapped_area() to handle the top-down vs. bottom-up address space allocation strategies. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: CONFIG_BLK_DEV_RAM fixAndrew Morton
init/do_mounts_rd.c depends upon CONFIG_BLK_DEV_RAM, not CONFIG_BLK_DEV_INITRD. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Optimized TSB table initialization.David S. Miller
We only need to write an invalid tag every 16 bytes, so taking advantage of this can save many instructions compared to the simple memset() call we make now. A prefetching implementation is implemented for sun4u and a block-init store version if implemented for Niagara. The next trick is to be able to perform an init and a copy_tsb() in parallel when growing a TSB table. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Allow CONFIG_MEMORY_HOTPLUG to build.David S. Miller
online_page() is straightforward, and then add a dummy remove_memory() that returns -EINVAL just like i386. There is no point in implementing remove_memory() since __remove_pages() has no implementation either. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Use SLAB caches for TSB tables.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Don't kill the page allocator when growing a TSB.David S. Miller
Try only lightly on > 1 order allocations. If a grow fails, we are under memory pressure, so do not try to grow the TSB for this address space any more. If a > 0 order TSB allocation fails on a new fork, retry using a 0 order allocation. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Randomize mm->mmap_base when PF_RANDOMIZE is set.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Increase top of 32-bit process stack.David S. Miller
Put it one page below the top of the 32-bit address space. This gives us ~16MB more address space to work with. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Top-down address space allocation for 32-bit tasks.David S. Miller
Currently allocations are very constrained for 32-bit processes. It grows down-up from 0x70000000 to 0xf0000000 which gives about 2GB of stack + dynamic mmap() space. So support the top-down method, and we need to override the generic helper function in order to deal with D-cache coloring. With these changes I was able to squeeze out a mmap() just over 3.6GB in size in a 32-bit process. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64] bbc_i2c: Fix cpu check and add missing module license.David S. Miller
Should allow cheetah_plus cpu types and don't taint the kernel. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix and re-enable dynamic TSB sizing.David S. Miller
This is good for up to %50 performance improvement of some test cases. The problem has been the race conditions, and hopefully I've plugged them all up here. 1) There was a serious race in switch_mm() wrt. lazy TLB switching to and from kernel threads. We could erroneously skip a tsb_context_switch() and thus use a stale TSB across a TSB grow event. There is a big comment now in that function describing exactly how it can happen. 2) All code paths that do something with the TSB need to be guarded with the mm->context.lock spinlock. This makes page table flushing paths properly synchronize with both TSB growing and TLB context changes. 3) TSB growing events are moved to the end of successful fault processing. Previously it was in update_mmu_cache() but that is deadlock prone. At the end of do_sparc64_fault() we hold no spinlocks that could deadlock the TSB grow sequence. We also have dropped the address space semaphore. While we're here, add prefetching to the copy_tsb() routine and put it in assembler into the tsb.S file. This piece of code is quite time critical. There are some small negative side effects to this code which can be improved upon. In particular we grab the mm->context.lock even for the tsb insert done by update_mmu_cache() now and that's a bit excessive. We can get rid of that locking, and the same lock taking in flush_tsb_user(), by disabling PSTATE_IE around the whole operation including the capturing of the tsb pointer and tsb_nentries value. That would work because anyone growing the TSB won't free up the old TSB until all cpus respond to the TSB change cross call. I'm not quite so confident in that optimization to put it in right now, but eventually we might be able to and the description is here for reference. This code seems very solid now. It passes several parallel GCC bootstrap builds, and our favorite "nut cruncher" stress test which is a full "make -j8192" build of a "make allmodconfig" kernel. That puts about 256 processes on each cpu's run queue, makes lots of process cpu migrations occur, causes lots of page table and TLB flushing activity, incurs many context version number changes, and it swaps the machine real far out to disk even though there is 16GB of ram on this test system. :-) Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SUNSU]: Fix missing spinlock initialization.David S. Miller
Caught by CONFIG_DEBUG_SPINLOCK. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[TG3]: Do not try to access NIC_SRAM_DATA_SIG on Sun parts.David S. Miller
Sun does't put an SEEPROM behind the tigon3 chip, among other things, so accesses to these areas just give bus timeouts. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: First cut at VIS simulator for Niagara.David S. Miller
Niagara does not implement some of the VIS instructions in hardware, so we have to emulate them. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix system type in /proc/cpuinfo and remove bogus OBP check.David S. Miller
Report 'sun4v' when appropriate in /proc/cpuinfo Remove all the verifications of the OBP version string. Just make sure it's there, and report it raw in the bootup logs and via /proc/cpuinfo. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Add SMT scheduling support for Niagara.David S. Miller
The mapping is a simple "(cpuid >> 2) == core" for now. Later we'll add more sophisticated code that will walk the sun4v machine description and figure this out from there. We should also add core mappings for jaguar and panther processors. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix 32-bit truncation which broke sparsemem.David S. Miller
The page->flags manipulations done by the D-cache dirty state tracking was broken because the constants were not marked with "UL" to make them 64-bit, which means we were clobbering the upper 32-bits of page->flags all the time. This doesn't jive well with sparsemem which stores the section and indexing information in the top 32-bits of page->flags. This is yet another sparc64 bug which has been with us forever. While we're here, tidy up some things in bootmem_init() and paginig_init(): 1) Pass min_low_pfn to init_bootmem_node(), it's identical to (phys_base >> PAGE_SHIFT) but we should use consistent with the variable names we print in CONFIG_BOOTMEM_DEBUG 2) max_mapnr, although no longer used, was being set inaccurately, we shouldn't subtract pfn_base any more. 3) All the games with phys_base in the zones_*[] arrays we pass to free_area_init_node() are no longer necessary. Thanks to Josh Grebe and Fabbione for the bug reports and testing. Fix also verified locally on an SB2500 which had a memory layout that triggered the same problem. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Move over to sparsemem.David S. Miller
This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix new context version SMP handling.David S. Miller
Don't piggy back the SMP receive signal code to do the context version change handling. Instead allocate another fixed PIL number for this asynchronous cross-call. We can't use smp_call_function() because this thing is invoked with interrupts disabled and a few spinlocks held. Also, fix smp_call_function_mask() to count "cpus" correctly. There is no guarentee that the local cpu is in the mask yet that is exactly what this code was assuming. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Bulletproof MMU context locking.David S. Miller
1) Always spin_lock_init() in init_context(). The caller essentially clears it out, or copies the mm info from the parent. In both cases we need to explicitly initialize the spinlock. 2) Always do explicit IRQ disabling while taking mm->context.lock and ctx_alloc_lock. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: kzalloc() conversionEric Sesterhenn
this patch converts arch/sparc64 to kzalloc usage. Crosscompile tested with allyesconfig. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix loop termination in mark_kpte_bitmap()David S. Miller
If we were aligned, but didn't have at least 256MB left to process, we would loop forever. Thanks to fabbione for the report and testing the fix. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Simplify TSB insert checks.David S. Miller
Don't try to avoid putting non-base page sized entries into the user TSB. It actually costs us more to check this than it helps. Eventually we'll have a multiple TSB scheme for user processes. Once a process starts using larger pages, we'll allocate and use such a TSB. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: More SUN4V cpu mondo bug fixing.David S. Miller
This cpu mondo sending interface isn't all that easy to use correctly... We were clearing out the wrong bits from the "mask" after getting something other than EOK from the hypervisor. It turns out the hypervisor can just be resent the same cpu_list[] array, with the 0xffff "done" entries still in there, and it will do the right thing. So don't update or try to rebuild the cpu_list[] array to condense it. This requires the "forward_progress" check to be done slightly differently, but this new scheme is less bug prone than what we were doing before. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix sun4v mna winfixup handling.David S. Miller
We were clobbering a base register before we were done using it. Fix a comment typo while we're here. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix mini RTC driver reading.David S. Miller
Need to subtract 1900 from year and 1 from month before giving it back to userspace. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Do not allow mapping pages within 4GB of 64-bit VA hole.David S. Miller
The UltraSPARC T1 manual recommends this because the chip could instruction prefetch into the VA hole, and this would also make decoding certain kinds of memory access traps more difficult (because the chip sign extends certain pieces of trap state). Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix _PAGE_EXEC handling.David S. Miller
First of all, use the known _PAGE_EXEC_{4U,4V} value instead of loading _PAGE_EXEC from memory. We either know which one to use by context, or we can code patch the test. Next, we need to check executability of a PTE in the generic TSB miss handler. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix typo in SUN4V D-TLB miss handler.David S. Miller
Should put FAULT_CODE_DTLB into %g3 not FAULT_CODE_ITLB. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Kill bogus function externs in asm/pgtable.hDavid S. Miller
These are all implemented inline earlier in the file. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Add mini-RTC driver for Starfire and SUN4V.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix bugs in SUN4V cpu mondo dispatch.David S. Miller
There were several bugs in the SUN4V cpu mondo dispatch code. In fact, if we ever got a EWOULDBLOCK or other error from the hypervisor call, we'd potentially send a cpu mondo multiple times to the same cpu and even worse we could loop until the timeout resending the same mondo over and over to such cpus. So let's bulletproof this thing as follows: 1) Implement cpu_mondo_send() and cpu_state() hypervisor calls in arch/sparc64/kernel/entry.S, add prototypes to asm/hypervisor.h 2) Don't build and update the cpulist using inline functions, this was causing the cpu mask to not get updated in the caller. 3) Disable interrupts during the entire mondo send, otherwise our cpu list and/or mondo block could get overwritten if we take an interrupt and do a cpu mondo send on the current cpu. 4) Check for all possible error return types from the cpu_mondo_send() hypervisor call. In particular: HV_EOK) Our work is done, all cpus have received the mondo. HV_CPUERROR) One or more of the cpus in the cpu list we passed to the hypervisor are in error state. Use cpu_state() calls over the entries in the cpu list to see which ones. Record them in "error_mask" and report this after we are done sending the mondo to cpus which are not in error state. HV_EWOULDBLOCK) We need to keep trying. Any other error we consider fatal, we report the event and exit immediately. 5) We only timeout if forward progress is not made. Forward progress is defined as having at least one cpu get the mondo successfully in a given cpu_mondo_send() call. Otherwise we bump a counter and delay a little. If the counter hits a limit, we signal an error and report the event. Also, smp_call_function_mask() error handling reports the number of cpus incorrectly. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix bugs in SMP TLB context version expiration handling.David S. Miller
1) We must flush the TLB, duh. 2) Even if the sw context was seen to be valid, the local cpu's hw context can be out of date, so reload it unconditionally. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix indexing into kpte_linear_bitmap.David S. Miller
Need to shift back up by 3 bits to get 8-byte entry index. Signed-off-by: David S. Miller <davem@davemloft.net>