31 Mar, 2006
7 commits
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Remove CONFIG_DEBUG_IOREMAP, it's now obsolete and won't work anyway.
Remove it from lib/KConfig since it was only available on parisc.Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Enable CONFIG_HPPA_IOREMAP by default and remove all now unnecessary code.
Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Instead of making it a #define in asm/io.h, allow user to select
to turn on IOREMAP from the config menu.Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Add STRICT_MM_TYPECHECKS to page.h as other architectures do.
Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
We need to do a little renaming of our original syntax because
of the difference in arguments.Signed-off-by: James Bottomley
Signed-off-by: Kyle McMartin -
This should now allow SG_IO and fuse to function correctly on our
platform.Signed-off-by: James Bottomley
Signed-off-by: Kyle McMartin -
pdc_stable.c is explicitly licensed under GPL version 2.
Signed-off-by: Thibaut VARENE
Signed-off-by: Kyle McMartin
29 Mar, 2006
1 commit
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Fix a lot of typos. Eyeballed by jmc@ in OpenBSD.
Signed-off-by: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Mar, 2006
2 commits
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Add ptr_to_compat() to parisc - needed by the new robust futex code.
Signed-off-by: Ingo Molnar
Cc: Kyle McMartin
Cc: Grant Grundler
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
PARISC can use generic funcs.
Signed-off-by: KAMEZAWA Hiroyuki
Cc: Kyle McMartin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Mar, 2006
2 commits
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- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove generic_fls64()
- remove generic_hweight{32,16,8}()
- remove generic_hweight64()
- remove sched_find_first_bit()
- remove find_{next,first}{,_zero}_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()Signed-off-by: Akinobu Mita
Cc: Kyle McMartin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Noticed by Michael Tokarev
add missing ()-pair in __ffz() macro for parisc
Signed-off-by: Akinobu Mita
Cc: Kyle McMartin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Mar, 2006
1 commit
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Implement the half-closed devices notifiation, by adding a new POLLRDHUP
(and its alias EPOLLRDHUP) bit to the existing poll/select sets. Since the
existing POLLHUP handling, that does not report correctly half-closed
devices, was feared to be changed, this implementation leaves the current
POLLHUP reporting unchanged and simply add a new bit that is set in the few
places where it makes sense. The same thing was discussed and conceptually
agreed quite some time ago:http://lkml.org/lkml/2003/7/12/116
Since this new event bit is added to the existing Linux poll infrastruture,
even the existing poll/select system calls will be able to use it. As far
as the existing POLLHUP handling, the patch leaves it as is. The
pollrdhup-2.6.16.rc5-0.10.diff defines the POLLRDHUP for all the existing
archs and sets the bit in the six relevant files. The other attached diff
is the simple change required to sys/epoll.h to add the EPOLLRDHUP
definition.There is "a stupid program" to test POLLRDHUP delivery here:
http://www.xmailserver.org/pollrdhup-test.c
It tests poll(2), but since the delivery is same epoll(2) will work equally.
Signed-off-by: Davide Libenzi
Cc: "David S. Miller"
Cc: Michael Kerrisk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Mar, 2006
1 commit
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unused isa_...() helpers removed.
Adrian Bunk:
The asm-sh part was rediffed due to unrelated changes.Signed-off-by: Al Viro
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Mar, 2006
1 commit
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Seems like needless clutter having a bunch of #if defined(CONFIG_$ARCH) in
include/linux/cache.h. Move the per architecture section definition to
asm/cache.h, and keep the if-not-defined dummy case in linux/cache.h to
catch architectures which don't implement the section.Verified that symbols still go in .data.read_mostly on parisc,
and the compile doesn't break.Signed-off-by: Kyle McMartin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Feb, 2006
1 commit
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Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all
arches. The idea is to make it possible to use them portably even before
distros include them in libc headers.Move common flags to asm-generic/mman.h
Signed-off-by: Michael S. Tsirkin
Cc: Roland Dreier
Cc: Badari Pulavarty
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Feb, 2006
1 commit
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Currently, copy-on-write may change the physical address of a page even if the
user requested that the page is pinned in memory (either by mlock or by
get_user_pages). This happens if the process forks meanwhile, and the parent
writes to that page. As a result, the page is orphaned: in case of
get_user_pages, the application will never see any data hardware DMA's into
this page after the COW. In case of mlock'd memory, the parent is not getting
the realtime/security benefits of mlock.In particular, this affects the Infiniband modules which do DMA from and into
user pages all the time.This patch adds madvise options to control whether memory range is inherited
across fork. Useful e.g. for when hardware is doing DMA from/into these
pages. Could also be useful to an application wanting to speed up its forks
by cutting large areas out of consideration.Signed-off-by: Michael S. Tsirkin
Acked-by: Hugh Dickins
Cc: Michael Kerrisk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Jan, 2006
1 commit
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Wire up some new syscalls that have been merged upstream,
o inotify
o openat et al
o pselect6/ppoll
o migrate_pagesSigned-off-by: Kyle McMartin
23 Jan, 2006
6 commits
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Add enough arch-specific compat signals code to enable parisc64
to compile and boot out of the mainline tree. There are likely still
many dragons here, but this is a start to squashing the last
big difference between the mainline tree and the parisc-linux tree.
The remaining bugs can be squashed as they come up.Signed-off-by: Kyle McMartin
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Add the parisc version of the "mark rodata section read only" patches.
Based on code from and Signed-off-by Arjan van de Ven
, Ingo Molnar , Andi Kleen ,
Andrew Morton , Linus Torvalds .Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Implement atomic64_t so atomic_long_t works on parisc. Also
clean up some of the coding style in atomic.h, and make sure
ATOMIC_INIT is cast properly.Signed-off-by: Kyle McMartin
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Drop the unused do_check_pgt_cache routine from mm/init.c and its
prototype in asm/pgalloc.hSigned-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Remove two unnecessary extern declarations from asm/pci.h.
They collide with what gcc4.0 assumed was static (and should be static).
Found by Joel Soete.Signed-off-by: Grant Grundler
Signed-off-by: Kyle McMartin -
Helge,
o Convert a bunch of kmalloc/memset uses to kzalloc.
o pci.c: Add some __read_mostly annotations.
o pci.c: Move constant pci_post_reset_delay to asm/pci.h
o grfioctl.h: Add A4450A to comment of CRT_ID_VISUALIZE_EG.
o Add some consts to perf.c/perf_images.hMatthew,
o sticore.c: Add some consts to suppress compile warnings.Signed-off-by: Helge Deller
Signed-off-by: Matthew Wilcox
Signed-off-by: Kyle McMartin
13 Jan, 2006
2 commits
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{get,put}_thread_info() were introduced in 2.5.4 and never
had been called by anything in the tree.Signed-off-by: Al Viro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add per-arch sched_cacheflush() which is a write-back cacheflush used by
the migration-cost calibration code at bootup time.Signed-off-by: Ingo Molnar
Cc: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Jan, 2006
5 commits
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Cleanup asm-parisc/processor.h to use C99 initializers in
INIT_THREAD().Signed-off-by: Alexey Dobriyan
Signed-off-by: Matthew Wilcox
Signed-off-by: Kyle McMartin -
Change to asm-parisc/pci.h makes the define of PCI_HOST_ADDR symmetrical
with PCI_BUS_ADDR. Also add a comment about PA_VIEW and LMMIO/ELMMIO/GMMIO.Signed-off-by: Grant Grundler
Signed-off-by: Kyle McMartin -
Add __iomem to __raw_check_addr(), which nukes ~13809 sparse
warnings on allmodconfig.Signed-off-by: Alexey Dobriyan
Signed-off-by: Matthew Wilcox
Signed-off-by: Kyle McMartin -
Define some constants for HugeTLB pages, not that parisc-linux supports
it yet.Signed-off-by: Helge Deller
Signed-off-by: Kyle McMartin -
Make flush_data_cache_local, flush_instruction_cache_local and
flush_tlb_all_local take a void * so they don't have to be cast
when using on_each_cpu(). This becomes a problem when on_each_cpu
is a macro (as it is in current -mm).Also move the prototype of flush_tlb_all_local into tlbflush.h and
remove its declaration from .c files.Signed-off-by: Matthew Wilcox
Signed-off-by: Kyle McMartin
10 Jan, 2006
2 commits
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add the per-arch mutex.h files for the remaining architectures.
We default to asm-generic/mutex-dec.h, because that performs
quite well on most arches. Arches that do not have atomic
decrement/increment instructions should switch to mutex-xchg.h
instead. Arches can also provide their own implementation for
the mutex fastpath primitives.Signed-off-by: Arjan van de Ven
Signed-off-by: Ingo Molnar -
add atomic_xchg() to all the architectures. Needed by the new mutex code.
Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
09 Jan, 2006
2 commits
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Most of the architectures have the same asm/futex.h. This consolidates them
into asm-generic, with the arches including it from their own asm/futex.h.In the case of UML, this reverts the old broken futex.h and goes back to using
the same one as almost everyone else.Signed-off-by: Jeff Dike
Cc: Paolo 'Blaisorblade' Giarrusso
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kill L1_CACHE_SHIFT from all arches. Since L1_CACHE_SHIFT_MAX is not used
anymore with the introduction of INTERNODE_CACHE, kill L1_CACHE_SHIFT_MAX.Signed-off-by: Ravikiran Thirumalai
Signed-off-by: Shai Fultheim
Signed-off-by: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2006
2 commits
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Several counters already have the need to use 64 atomic variables on 64 bit
platforms (see mm_counter_t in sched.h). We have to do ugly ifdefs to fall
back to 32 bit atomic on 32 bit platforms.The VM statistics patch that I am working on will also make more extensive
use of atomic64.This patch introduces a new type atomic_long_t by providing definitions in
asm-generic/atomic.h that works similar to the c "long" type. Its 32 bits
on 32 bit platforms and 64 bits on 64 bit platforms.Also cleans up the determination of the mm_counter_t in sched.h.
Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Here is the patch to implement madvise(MADV_REMOVE) - which frees up a
given range of pages & its associated backing store. Current
implementation supports only shmfs/tmpfs and other filesystems return
-ENOSYS."Some app allocates large tmpfs files, then when some task quits and some
client disconnect, some memory can be released. However the only way to
release tmpfs-swap is to MADV_REMOVE". - Andrea ArcangeliDatabases want to use this feature to drop a section of their bufferpool
(shared memory segments) - without writing back to disk/swap space.This feature is also useful for supporting hot-plug memory on UML.
Concerns raised by Andrew Morton:
- "We have no plan for holepunching! If we _do_ have such a plan (or
might in the future) then what would the API look like? I think
sys_holepunch(fd, start, len), so we should start out with that."- Using madvise is very weird, because people will ask "why do I need to
mmap my file before I can stick a hole in it?"- None of the other madvise operations call into the filesystem in this
manner. A broad question is: is this capability an MM operation or a
filesytem operation? truncate, for example, is a filesystem operation
which sometimes has MM side-effects. madvise is an mm operation and with
this patch, it gains FS side-effects, only they're really, really
significant ones."Comments:
- Andrea suggested the fs operation too but then it's more efficient to
have it as a mm operation with fs side effects, because they don't
immediatly know fd and physical offset of the range. It's possible to
fixup in userland and to use the fs operation but it's more expensive,
the vmas are already in the kernel and we can use them.Short term plan & Future Direction:
- We seem to need this interface only for shmfs/tmpfs files in the short
term. We have to add hooks into the filesystem for correctness and
completeness. This is what this patch does.- In the future, plan is to support both fs and mmap apis also. This
also involves (other) filesystem specific functions to be implemented.- Current patch doesn't support VM_NONLINEAR - which can be addressed in
the future.Signed-off-by: Badari Pulavarty
Cc: Hugh Dickins
Cc: Andrea Arcangeli
Cc: Michael Kerrisk
Cc: Ulrich Drepper
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Jan, 2006
1 commit
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Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
18 Nov, 2005
2 commits
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Since taking a spinlock disables preempt, and we need to spinlock tlb flush
on SMP for N class, we might as well just spinlock on uniprocessor machines
too.Signed-off-by: Matthew Wilcox
Signed-off-by: Kyle McMartin -
We actually have two separate bad bugs
1. The read_lock implementation spins with disabled interrupts. This is
completely wrong
2. Our spin_lock_irqsave should check to see if interrupts were enabled
before the call and re-enable interrupts around the inner spin loop.The problem is that if we spin with interrupts off, we can't receive
IPIs. This has resulted in a bug where SMP machines suddenly spit
smp_call_function timeout messages and hang.The scenario I've caught is
CPU0 does a flush_tlb_all holding the vmlist_lock for write.
CPU1 tries a cat of /proc/meminfo which tries to acquire vmlist_lock for
read
CPU1 is now spinning with interrupts disabled
CPU0 tries to execute a smp_call_function to flush the local tlb cachesThis is now a deadlock because CPU1 is spinning with interrupts disabled
and can never receive the IPISigned-off-by: James Bottomley
Signed-off-by: Kyle McMartin