29 Mar, 2006
29 commits
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Add proper prototypes for fat_cache_init() and fat_cache_destroy() in
msdos_fs.h.Signed-off-by: Adrian Bunk
Acked-by: OGAWA Hirofumi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The Coverity checker found this off-by-one error.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Since dash2underscore() just operates and returns chars, I guess its safe
to change the return value to a char. With my .config, this reduces its
size by 5 bytes.text data bss dec hex filename
4155 152 0 4307 10d3 params.o.orig
4150 152 0 4302 10ce params.oSigned-off-by: Eric Sesterhenn
Signed-off-by: Alexey Dobriyan
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
(akpm: I don't do comment typos patches. This one snuck through by accident)
Signed-off-by: Serge Hallyn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Renumber the recently-added POLLREMOVE and POLLRDHUP to line up with the other
architectures.Cc: Davide Libenzi
Cc: Ulrich Drepper
Cc: Ivan Kokshaysky
Cc: Richard Henderson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
On ppc64 we look at a profiling register to work out the sample address and
if it was in userspace or kernel.The backtrace interface oprofile_add_sample does not allow this. Create
oprofile_add_ext_sample and make oprofile_add_sample use it too.Signed-off-by: Anton Blanchard
Cc: Philippe Elie
Cc: John Levon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
gcc-4.2:
kernel/module.c: In function '__find_symbol':
kernel/module.c:158: warning: the address of '__start___kcrctab', will always evaluate as 'true'
kernel/module.c:165: warning: the address of '__start___kcrctab_gpl', will always evaluate as 'true'
kernel/module.c:182: warning: the address of '__start___kcrctab_gpl_future', will always evaluate as 'true'Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the user specified `major=0' (odd thing to do), capi.c will use dynamic
allocation. We need to pick up that major for subsequent unregister_chrdev().Acked-by: Karsten Keil
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the user specified `major=0' (odd thing to do), pt.c will use dynamic
allocation. We need to pick up that major for subsequent unregister_chrdev().Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the user specified `major=0' (odd thing to do), pg.c will use dynamic
allocation. We need to pick up that major for subsequent unregister_chrdev().Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It's purely cosmetic, but with the patch there's no longer a
BLK_DEV_RAM_COUNT setting in the .config if BLK_DEV_RAM=n.Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove code in async receive handling that serves no purpose with new tty
receive buffering. Previously this code tried to free up receive buffer
space, but now does nothing useful while making expensive calls.Signed-off-by: Paul Fulghum
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add driver support for general purpose I/O feature of the Synclink GT
adapters.Signed-off-by: Paul Fulghum
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove dead code from synclink driver. This was used previously when the
write method had a from_user flag, which has been removed.Signed-off-by: Paul Fulghum
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Now that Christoph Lameter's atomic_long_t support is merged in mainline,
might as well convert asm-generic/local.h to use it, so the same code can
be used for both sizes of 32 and 64-bit unsigned longs.akpm sayeth:
Q:
Is there any particular reason why these routines weren't simply
implemented with local_save/restore_flags, if they are only meant to
guarantee atomicity to the local cpu? I'm sure on most platforms this
would be more efficient than using an atomic...A:
The whole _point_ of local_t is to avoid local_irq_disable(). It's
designed to exploit the fact that many CPUs can do incs and decs in a way
which is atomic wrt local interrupts, but not atomic wrt SMP.But this patch makes sense, because asm-generic/local.h is just a fallback
implementation for architectures which either cannot perform these
local-irq-atomic operations, or its maintainers haven't yet got around to
implementing them.We need more work done on local_t in the 2.6.17 timeframe - they're defined as
unsigned long, but some architectures implement them as signed long.Signed-off-by: Kyle McMartin
Cc: Benjamin LaHaise
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove some duplicate BCD definitions
Signed-off-by: Matt Mackall
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix up some RTC whitespace and style
Signed-off-by: Matt Mackall
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The sync may still be needed for CPU clock calibration but we don't sync in
the regular case.Signed-off-by: Matt Mackall
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move real_year inside the read loop and move the spinlock up as well
Signed-off-by: Matt Mackall
Cc: Ralf Baechle
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Ralf Baechle
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Russell King
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: "David S. Miller"
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Matt Mackall
Cc: Andi Kleen
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reading the CMOS clock on x86 and some other arches currently takes up to one
second because it synchronizes with the CMOS second tick-over. This delay
shows up at boot time as well a resume time.This is the currently the most substantial boot time delay for machines that
are working towards instant-on capability. Also, a quick back of the envelope
calculation (.5sec * 2M users * 1 boot a day * 10 years) suggests it has cost
Linux users in the neighborhood of a million man-hours.An earlier thread on this topic is here:
http://groups.google.com/group/linux.kernel/browse_frm/thread/8a24255215ff6151/2aa97e66a977653d?hl=en&lr=&ie=UTF-8&rnum=1&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DUTF-8%26selm%3D1To2R-2S7-11%40gated-at.bofh.it#2aa97e66a977653d
..from which the consensus seems to be that it's no longer desirable.
In my view, there are basically four cases to consider:
1) networked, need precise walltime: use NTP
2) networked, don't need precise walltime: use NTP anyway
3) not networked, don't need sub-second precision walltime: don't care
4) not networked, need sub-second precision walltime:
get a network or a radio time source because RTC isn't good enough anywaySo this patch series simply removes the synchronization in favor of a simple
seqlock-like approach using the seconds value.Note that for purposes of timer accuracy on wakeup, this patch will cause us
to fire timers up to one second late. But as the current timer resume code
will already sync once (or more!), it's no worse for short timers.Signed-off-by: Matt Mackall
Cc: Andi Kleen
Cc: "David S. Miller"
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Russell King
Cc: Ralf Baechle
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Mar, 2006
11 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Fix off-by-1 error in TSB grow check. -
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NET]: drop duplicate assignment in request_sock
[IPSEC]: Fix tunnel error handling in ipcomp6 -
* 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block:
[PATCH] Don't make debugfs depend on DEBUG_KERNEL
[PATCH] Fix blktrace compile with sysfs not defined
[PATCH] unused label in drivers/block/cciss.
[BLOCK] increase size of disk stat counters
[PATCH] blk_execute_rq_nowait-speedup
[PATCH] ide-cd: quiet down GPCMD_READ_CDVD_CAPACITY failure
[BLOCK] ll_rw_blk: kmalloc -> kzalloc conversion
[PATCH] kzalloc() conversion in drivers/block
[PATCH] update max_sectors documentation -
... being careful that mutex_trylock is inverted wrt down_trylock
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.Signed-off-by: Arjan van de Ven
Signed-off-by: Ingo Molnar
Cc: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When retrying a write due to barrier failure, we don't reset 'remaining', so
it goes negative and never hits 0 again.Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
An md array can be asked to change the amount of each device that it is using,
and in particular can be asked to use the maximum available space. This
currently only works if the first device is not larger than the rest. As
'size' gets changed and so 'fit' becomes wrong. So check if a 'fit' is
required early and don't corrupt it.Signed-off-by: Doug Ledford
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
raid5 overloads bi_phys_segments to count the number of blocks that the
request was broken in to so that it knows when the bio is completely handled.Accessing this must always be done under a spinlock. In one case we also call
bi_end_io under that spinlock, which probably isn't ideal as bi_end_io could
be expensive (even though it isn't allowed to sleep).So we reducde the range of the spinlock to just accessing bi_phys_segments.
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
wait_event_lock_irq puts a ';' after its usage of the 4th arg, so we don't
need to.Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This allows user-space to access data safely. This is needed for raid5
reshape as user-space needs to take a backup of the first few stripes before
allowing reshape to commence.It will also be useful in cluster-aware raid1 configurations so that all
cluster members can leave a section of the array untouched while a
resync/recovery happens.A 'start' and 'end' of the suspended range are written to 2 sysfs attributes.
Note that only one range can be suspended at a time.Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
