24 Jan, 2007
30 commits
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Signed-off-by: Russell King
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show_mem() was assuming incorrectly that the mem_map for any
node started at PFN 0. This is obviously wrong; fix it to
take account of node_start_pfn.Signed-off-by: Russell King
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The s3c2410_gpio_getcfg() currently returns
a value which is dependant on the GPIO no
passed in. Now we have more generic constants
it is sensible to use those as return codes
so that any function dealing with >1 GPIO
does not need to do it's own number processing.Since this function is only currently used in
pm.c, it is easy to fixup (and correct pm.c
to use the generic constants)Signed-off-by: Ben Dooks
Signed-off-by: Russell King -
GPIO bank A can only be output or a special
function, and the regs-gpio.h header has
mistakenly got this as input or output.The mistake is carried on into the gpio.c
s3c2410_gpio_cfgpin() call which will set the
wrong value if S3C2410_GPIO_OUTPUT is passed.Signed-off-by: Ben Dooks
Signed-off-by: Russell King -
The transition latency has to be defined and reasonably
small to allow on-demand and conservative governors.
The value has been defined according to manual.
The imx_set_target() protected against seen out of range
requests now.Signed-off-by: Pavel Pisa
Acked-by: Sascha Hauer
Signed-off-by: Russell King -
Cleanup of at91 platform level gpio wake and suspend/resume logic.
The GPIO core now delegates wakeups to the parent AIC by refcounting,
and delegates clock management to the clock API. This makes these
system modules more independent of each other, which is cleaner and will
also help with the AT91SAM9263 (where some GPIO controllers share the
same irq and clock).Original patch by David Brownell.
Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
This patch fixes the unbalanced calls to enable_irq_wake() and
disable_irq_wake() in the AT91 (and AVR32) serial driver.It should resolve these kernel messages:
Unbalanced IRQ x wake disable
BUG: warning at kernel/irq/manage.c:167/set_irq_wake()Original patch from Marc Pignat.
Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
This patch implements CPU and peripheral reset on AT91SAM9260 and
AT91SAM9261.Original patch from Wojtek Kaniewski.
Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
A couple of whitespace cleanups, mainly in the AT91 header files.
Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
Fix two typo's where AT01_* was used instead of AT91_*.
[Patch from Wojtek Kaniewski]Fix definition of AT91_SMC_EXNWMODE for the SAM9 processors.
[Patch from Wu Xuan]Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
Remove the legacy CONFIG_DEBUG_WAITQ from the SAM9260-EK and SAM9261-EK
default configuration files.Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
We are doing ->buf_prepare(buf) before adding buf to q->stream list. This
means that videobuf_qbuf() should not try to re-add a STATE_PREPARED buffer.Signed-off-by: Oleg Nesterov
Signed-off-by: Mauro Carvalho Chehab -
This changes a few mentions of my email address to point to the new one,
leaving things like old copyright messages alone.Signed-off-by: Linus Torvalds
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Change my email address to reflect OSDL merger.
Signed-off-by: Stephen Hemminger
[ The irony. Somebody still has his sign-off message hardcoded
in a script or his brainstem ;^]
Signed-off-by: Linus Torvalds -
Any newly added irq handler may obviously make any old spurious irq
status invalid, since the new handler may well be the thing that is
supposed to handle any interrupts that came in.So just clear the statistics when adding handlers.
Pointed-out-by: Alan Cox
Acked-by: Thomas Gleixner
Acked-by: Ingo Molnar
Signed-off-by: Linus Torvalds -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Vr41xx: Fix after GENERIC_HARDIRQS_NO__DO_IRQ change
[MIPS] SMTC: Instant IPI replay. -
As written, sys_shmget will return ENOSPC when one page is still
available for allocation. This patch corrects the test.Signed-off-by: Guy Streeter
Signed-off-by: Linus Torvalds
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* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
IB/ehca: Fix mismatched spin_unlock in irq handler
IB/ehca: Fix improper use of yield() with spinlock held
IB/srp: Check match_strdup() return -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
memset() after kmalloc() on size * 8 would better be on size * 8, not
just size; fixed by switching to kcalloc() - it's more idiomatic anyway.Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
while lock-profiling the -rt kernel i noticed weird contention during
mmap-intense workloads, and the tracer showed the following gem, in one
of our MM hotpaths:threaded-2771 1.... 65us : sys_munmap (sysenter_do_call)
threaded-2771 1.... 66us : profile_munmap (sys_munmap)
threaded-2771 1.... 66us : blocking_notifier_call_chain (profile_munmap)
threaded-2771 1.... 66us : rt_down_read (blocking_notifier_call_chain)ouch! a global rw-semaphore taken in one of the most performance-
sensitive codepaths of the kernel. And i dont even have oprofile
enabled! All distro kernels have CONFIG_PROFILING enabled, so this
scalability problem affects the majority of Linux users.The fix is to enhance blocking_notifier_call_chain() to only take the
lock if there appears to be work on the call-chain.With this patch applied i get nicely saturated system, and much higher
munmap performance, on SMP systems.And as a bonus this also fixes a similar scalability bottleneck in the
thread-exit codepath: profile_task_exit() ...Signed-off-by: Ingo Molnar
Acked-by: Peter Zijlstra
Acked-by: Nick Piggin
Signed-off-by: Linus Torvalds -
* 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa:
[ALSA] Repair snd-usb-usx2y over OHCI -
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
NetXen: Use pci_register_driver() instead of pci_module_init() in init_module
NetXen: Firmware check modifications
ehea: Fixed possible nullpointer access
ehea: Added logging off associated errors
ehea: Improved logging of permission issues
ehea: New method to determine number of available ports
ehea: Modified initial autoneg state determination
ehea: Fixing firmware queue config issue
ehea: Fixed wrong dereferencation
PHY: Export phy ethtool helpers
modify 3c589_cs to be SMP safe -
* 'ftape' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
more ftape removal -
* 'kill-jffs-prep' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
Note that JFFS (v1) is to be deleted, in feature-removal-schedule.txt -
A flag was recently added to the elevator code to avoid
performing an unplug when reuests are being re-queued.
The goal of this flag was to avoid a deep recursion that
can occur when re-queueing requests after a SCSI device/host
reset. See http://lkml.org/lkml/2006/5/17/254However, that fix added the flag near the bottom of a case
statement, where an earlier break (in an if statement) could
transport one out of the case, without setting the flag.
This patch sets the flag earlier in the case statement.I re-discovered the deep recursion recently during testing;
I was told that it was a known problem, and the fix to it was
in the kernel I was testing. Indeed it was ... but it didn't
fix the bug. With the patch below, I no longer see the bug.Signed-off by: Linas Vepstas
Signed-off-by: Jens Axboe
Cc: Chris Wright
Signed-off-by: Linus Torvalds -
Signed-off-by: Yoichi Yuasa
Signed-off-by: Ralf Baechle -
SMTC pseudo-interrupts between TCs are deferred and queued if the target
TC is interrupt-inhibited (IXMT). In the first SMTC prototypes, these
queued IPIs were serviced on return to user mode, or on entry into the
kernel idle loop. The INSTANT_REPLAY option dispatches them as part of
local_irq_restore() processing, which adds runtime overhead (hence the
option to turn it off), but ensures that IPIs are handled promptly even
under heavy I/O interrupt load.Signed-off-by: Ralf Baechle
23 Jan, 2007
10 commits
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Seems to be some left-over debug code.
Cc: Len Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
this patch fills in the portions for ia64 kexec.
Signed-off-by: Simon Horman
Cc: "Zou, Nanhai"
Cc: Vivek Goyal
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Mohan Kumar suggested making kexec-tools-testing.tar.gz a link to the
latest version. I have done this and this patch updates the documentation
accordingly.Signed-off-by: Simon Horman
Cc: Vivek Goyal
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes a confusion reiserfs has for a long time.
On release file operation reiserfs used to try to pack file data stored in
last incomplete page of some files into metadata blocks. After packing the
page got cleared with clear_page_dirty. It did not take into account that
the page may be mmaped into other process's address space. Recent
replacement for clear_page_dirty cancel_dirty_page found the confusion with
sanity check that page has to be not mapped.The patch fixes the confusion by making reiserfs avoid tail packing if an
inode was ever mmapped. reiserfs_mmap and reiserfs_file_release are
serialized with mutex in reiserfs specific inode. reiserfs_mmap locks the
mutex and sets a bit in reiserfs specific inode flags.
reiserfs_file_release checks the bit having the mutex locked. If bit is
set - tail packing is avoided. This eliminates a possibility that mmapped
page gets cancel_page_dirty-ed.Signed-off-by: Vladimir Saveliev
Cc: Jeff Mahoney
Cc: Chris Mason
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently one can specify an arbitrary node mask to mbind that includes
nodes not allowed. If that is done with an interleave policy then we will
go around all the nodes. Those outside of the currently allowed cpuset
will be redirected to the border nodes. Interleave will then create
imbalances at the borders of the cpuset.This patch restricts the nodes to the currently allowed cpuset.
The RFC for this patch was discussed at
http://marc.theaimsgroup.com/?t=116793842100004&r=1&w=2Signed-off-by: Christoph Lameter
Cc: Paul Jackson
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch fixes a few problems with the tlclk driver.
* bug in the select_amcb1_transmit_clock
* racy read sys call
* racy open sys call
* use of add_timer where mod_timer would be better
* change to the timer data parameter useSigned-off-by: Mark Gross
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
For large size DIO that needs multiple bio, one full page worth of data was
lost at the boundary of bio's maximum sector or segment limits. After a
bio is full and got submitted. The outer while (nbytes) { ... } loop will
allocate a new bio and just march on to index into next page. It just
forgets about the page that bio_add_page() rejected when previous bio is
full. Fix it by put the rejected page back to pvec so we pick it up again
for the next bio.Signed-off-by: Ken Chen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This fixes the SH rtc driver correctly act on the "enabled" flag when
setting an alarm.Signed-off-by: Jamie Lenehan
Cc: David Brownell
Cc: Alessandro Zummo
Cc: Paul Mundt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If a page is marked as dirty in the guest pte, set_pte_common() can set the
writable bit on newly-instantiated shadow pte. This optimization avoids
a write fault after the initial read fault.However, if a write fault instantiates the pte, fix_write_pf() incorrectly
reports the fault as a guest page fault, and the guest oopses on what appears
to be a correctly-mapped page.Fix is to detect the condition and only report a guest page fault on a user
access to a kernel page.With the fix, a kvm guest can survive a whole night of running the kernel
hacker's screensaver (make -j9 in a loop).Signed-off-by: Avi Kivity
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The various bit string instructions (bts, btc, etc.) fail to adjust the
address correctly if the bit address is beyond BITS_PER_LONG.This bug creeped in as the emulator originally relied on cr2 to contain the
memory address; however we now decode it from the mod r/m bits, and must
adjust the offset to account for large bit indices.The patch is rather large because it switches src and dst decoding around, so
that the bit index is available when decoding the memory address.This fixes workloads like the FC5 installer.
Signed-off-by: Avi Kivity
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
