29 Mar, 2006
40 commits
-
They deal with wrapping correctly and are nicer to read.
Signed-off-by: Marcelo Feitoza Parisi
Signed-off-by: Alexey Dobriyan
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
They deal with wrapping correctly and are nicer to read.
Signed-off-by: Marcelo Feitoza Parisi
Signed-off-by: Alexey Dobriyan
Cc: Bartlomiej Zolnierkiewicz
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It deals with wrapping correctly and is nicer to read.
Signed-off-by: Marcelo Feitoza Parisi
Signed-off-by: Alexey Dobriyan
Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
They deal with wrapping correctly and are nicer to read.
Signed-off-by: Marcelo Feitoza Parisi
Signed-off-by: Alexey Dobriyan
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Nowadays, even Debian stable ships a microcode_ctl utility recent enough to no
longer use this ioctl.Signed-off-by: Adrian Bunk
Acked-by: Tigran Aivazian
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add missing files and descriptions to
Documentation/filesystems/00-INDEXSigned-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is a conversion to make the various file_operations structs in fs/
const. Basically a regexp job, with a few manual fixupsThe goal is both to increase correctness (harder to accidentally write to
shared datastructures) and reducing the false sharing of cachelines with
things that get dirty in .data (while .rodata is nicely read only and thus
cache clean)Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Mark the f_ops members of inodes as const, as well as fix the
ripple-through this causes by places that copy this f_ops and then "do
stuff" with it.Signed-off-by: Arjan van de Ven
Signed-off-by: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Tweak the proc setup code so things work OK with const
proc_dir_entry.proc_fops.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Replace for_each_cpu with for_each_possible_cpu.
Modifies occurences in documentaion.
for_each_cpu in whatisRCU.txt should be for_each_online_cpu ???
(I'm not sure..)Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch replaces for_each_cpu with for_each_possible_cpu.
under arch/i386.
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch replaces for_each_cpu with for_each_possible_cpu.
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch replaces for_each_cpu with for_each_possible_cpu.
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
replaces for_each_cpu with for_each_possible_cpu().
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
for_each_cpu() is a for-loop over cpu_possible_map. for_each_online_cpu is
for-loop cpu over cpu_online_map. .....for_each_cpu() is not sufficiently
explicit and can lead to mistakes.This patch adds for_each_possible_cpu() in preparation for the removal of
for_each_cpu().Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove an unnecessary level of indirection in allocating and freeing select
bits, as per the select_bits_alloc() and select_bits_free() functions.
Both select.c and compat.c are updated.Signed-off-by: Vadim Lobanov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Optimize select and poll by a using stack space for small fd sets
This brings back an old optimization from Linux 2.0. Using the stack is
faster than kmalloc. On a Intel P4 system it speeds up a select of a
single pty fd by about 13% (~4000 cycles -> ~3500)It also saves memory because a daemon hanging in select or poll will
usually save one or two less pages. This can add up - e.g. if you have 10
daemons blocking in poll/select you save 40KB of memory.I did a patch for this long ago, but it was never applied. This version is
a reimplementation of the old patch that tries to be less intrusive. I
only did the minimal changes needed for the stack allocation.The cut off point before external memory is allocated is currently at
832bytes. The system calls always allocate this much memory on the stack.These 832 bytes are divided into 256 bytes frontend data (for the select
bitmaps of the pollfds) and the rest of the space for the wait queues used
by the low level drivers. There are some extreme cases where this won't
work out for select and it falls back to allocating memory too early -
especially with very sparse large select bitmaps - but the majority of
processes who only have a small number of file descriptors should be ok.
[TBD: 832/256 might not be the best split for select or poll]I suspect more optimizations might be possible, but they would be more
complicated. One way would be to cache the select/poll context over
multiple system calls because typically the input values should be similar.
Problem is when to flush the file descriptors out though.Signed-off-by: Andi Kleen
Cc: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
drivers/ide/pci/generic.c:45: warning: `ide_generic_all_on' defined but not used
Cc: Bartlomiej Zolnierkiewicz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some quick backport bits from the libata PATA work to fix things found in
the sis driver. The piix driver needs some fixes too but those are way to
large and need someone working on old IDE with time to do them.This patch fixes the case where random bits get loaded into SIS timing
registers according to the description of the correct behaviour from
Vojtech Pavlik. It also adds the SiS5517 ATA16 chipset which is not
currently supported by the driver. Thanks to Conrad Harriss for loaning me
the machine with the 5517 chipset.Signed-off-by: Alan Cox
Acked-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
>From http://marc.theaimsgroup.com/?l=linux-kernel&m=110304128900342&w=2
AMD756 doesn't support host side cable detection. Do disk side only and
don't advice obsolete options.Acked-by: Bartlomiej Zolnierkiewicz
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a proper prototype for autofs4_dentry_release() to autofs_i.h.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A size_t can't be < 0.
(akpm: and rw_verify_area() already did that check)
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is obsolete.
Cc: Tom Zanussi
Cc: Jens Axboe
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I noticed that my email address is four jobs ago.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
