12 Feb, 2007
40 commits
-
- update documentation
- use clear_bdi_congested/set_bdi_congested functions directly instead of
old wrappers- removed DECLARE_BUF_AS_STRING macro
Signed-off-by: Thomas Maier
Cc: Peter Osterlund
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use attribute(weak).
Signed-off-by: Alexey Dobriyan
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Lindent the code
- allow semicolons after macros by 'do {} while (0)'
- eliminate C++ commentsSigned-off-by: Jiri Slaby
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
serial167, cleanup
- Lindent the code
- remove 3 pointers from paranoia_checkSigned-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
gm_lock is useless, since ISA is configured at init time and there it's
serialized.Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Mark some funcions with __init and __devinit.
Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This one was pointed out on the MOKB site:
http://kernelfun.blogspot.com/2006/11/mokb-09-11-2006-linux-26x-ext2checkpage.htmlIf a directory's i_size is corrupted, ext2_find_entry() will keep
processing pages until the i_size is reached, even if there are no more
blocks associated with the directory inode. This patch puts in some
minimal sanity-checking so that we don't keep checking pages (and issuing
errors) if we know there can be no more data to read, based on the block
count of the directory inode.This is somewhat similar in approach to the ext3 patch I sent earlier this
year.Signed-off-by: Eric Sandeen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Mathieu originally needed to add this for tracing Xen, but it's something
that's needed for any application that can be tracing while cpus are added.unplug isn't supported by this patch. The thought was that at minumum a new
buffer needs to be added when a cpu comes up, but it wasn't worth the effort
to remove buffers on cpu down since they'd be freed soon anyway when the
channel was closed.[zanussi@us.ibm.com: avoid lock_cpu_hotplug deadlock]
Signed-off-by: Mathieu Desnoyers
Cc: Tom Zanussi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Update the serial_txx9 driver.
* Configurable manumum port number. (SERIAL_TXX9_NR_UARTS)
* Remove some code which is unneeded if CONFIG_PM=n.
* Use PCI_DEVICE() for pci device id table and make it const.
* Do not includeSigned-off-by: Atsushi Nemoto
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Replace appropriate pairs of "kmem_cache_alloc()" + "memset(0)" with the
corresponding "kmem_cache_zalloc()" call.Signed-off-by: Robert P. J. Day
Cc: "Luck, Tony"
Cc: Andi Kleen
Cc: Roland McGrath
Cc: James Bottomley
Cc: Greg KH
Acked-by: Joel Becker
Cc: Steven Whitehouse
Cc: Jan Kara
Cc: Michael Halcrow
Cc: "David S. Miller"
Cc: Stephen Smalley
Cc: James Morris
Cc: Chris Wright
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add proper prototypes for two functions in drivers/char/vc_screen.c
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Userspace should be worrying about userspace, so having the socket.h
and stat.h pollute the namespace in the non-glibc case is wrong and
pretty much prevents any other libc from utilizing these headers
sanely unless they set up the __GLIBC__ define themselves (which
sucks)Cc: "David S. Miller"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The line discipline numbers N_* are currently defined for each architecture
individually, but (except for a seeming mistake) identically, in
asm/termios.h. There is no obvious reason why these numbers should be
architecture specific, nor any apparent relationship with the termios
structure. The total number of these, NR_LDISCS, is defined in linux/tty.h
anyway. So I propose the following patch which moves the definitions of
the individual line disciplines to linux/tty.h too.Three of these numbers (N_MASC, N_PROFIBUS_FDL, and N_SMSBLOCK) are unused
in the current kernel, but the patch still keeps the complete set in case
there are plans to use them yet.Signed-off-by: Tilman Schmidt
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When igrab() is calling __iget() on an inode it should check if
clear_inode() has been called on the inode already. Otherwise there is a
race window between clear_inode() and destroy_inode() where igrab() calls
__iget() which leads to already free inodes on the inode lists.Signed-off-by: Vandana Rungta
Signed-off-by: Jan Blunck
Cc: Al Viro
Cc: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Generate locking graph information into /proc/lockdep, for lock hierarchy
documentation and visualization purposes.sample output:
c089fd5c OPS: 138 FD: 14 BD: 1 --..: &tty->termios_mutex
-> [c07a3430] tty_ldisc_lock
-> [c07a37f0] &port_lock_key
-> [c07afdc0] &rq->rq_lock_key#2The lock classes listed are all the first-hop lock dependencies that
lockdep has seen so far.Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- returns after DEBUG_LOCKS_WARN_ON added in 3 places
- debug_locks checking after lookup_chain_cache() added in
__lock_acquire()- locking for testing and changing global variable max_lockdep_depth
added in __lock_acquire()From: Ingo Molnar
My __acquire_lock() cleanup introduced a locking bug: on SMP systems we'd
release a non-owned graph lock. Fix this by moving the graph unlock back,
and by leaving the max_lockdep_depth variable update possibly racy. (we
dont care, it's just statistics)Also add some minimal debugging code to graph_unlock()/graph_lock(),
which caught this locking bug.Signed-off-by: Jarek Poplawski
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
kmem_cache_free() was missing the check for freeing held locks.
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kill acquired_tasklist_lock, sig_needs_tasklist() is very cheap nowadays.
Signed-off-by: Oleg Nesterov
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
tty_wakeup cleanup
- remove wake_up_interruptible(&tty->write_wait) surrounding
tty_wakup(tty);
- substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);Signed-off-by: Jiri Slaby
Cc: Alan Cox
Acked-by: Tilman Schmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Don't forget to decrease card_count in fail paths and in remove function.
Also null board->base in such cases to point out, that this structure is
unused and thus can be reassigned.Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for higher baud rates (coming from original isi driver).
Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Check if the card really interrupted us by reading its IO space and eventualy
return IRQ_NONE.Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
isicom, augment card_reset
- add 0xee to signatures
- change long delays to sleeps
- make one sleep shorter not to wait 3s
- portcount == 16 is also correctSigned-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
2 spin_unlocks are omitted in the interrupt handler. Put them there to fix up
deadlocking on UP.Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Adrian Bunk
Cc: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Removes an unused and ambiguous redefinition of INIT_WORK()
Signed-off-by: Andreas Jaggi
Acked-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I added IS_NOATIME(inode) macro definition in include/linux/fs.h, true if
the inode superblock is marked readonly or noatime.This new macro is then used in touch_atime() instead of separatly testing
MS_RDONLY and MS_NOATIMESigned-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I noticed cache misses in touch_atime() that can be avoided if we keep
mnt_count & mnt_expiry_mark in a different cache line than mnt_flags
(mostly read)mnt_count & mnt_expiry_mark are modified each time a file is opened/closed
in a file system.touch_atime() is called each time a file is read, and generally needs to
read mnt_flags.Other fields of struct vfsmount are mostly read so I chose to move
mnt_count & mnt_expiry_mark at the end of struct vfsmount. And adding a
comment so that nobody tries to re-arrange fields to fill the holes :)On 64bits platforms, the new offsetof(mnt_count) is 0xC0
On 32bits platforms, it is 0x60, so I didnot add a
____cacheline_aligned_in_smp because it would have a too big impact on the
size of this object (in particular if CONFIG_X86_L1_CACHE_SHIFT=7)Signed-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- tty_hangup() itself schedules work, so there is no need to schedule hangup
in the driver- tty_wakeup(): it's safe to call it while in atomic, so that its
schedule_work might be also wiped outSigned-off-by: Jiri Slaby
Acked-by: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The SGI IOC3 and IOC4 PCI devices implement memory space apertures, not I/O
space apertures. Use the appropriate region management functions.Signed-off-by: Brent Casavant
Cc: Pat Gefre
Cc: Stanislaw Skowronek
Cc: Brent Casavant
Acked-by: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extend usr/gen_init_cpio.c "file" entry, adding support for hard links.
Previous format:
fileNew format:
file []The hard links specification is optional, keeping the previous
behaviour.All hard links are defined sequentially in the resulting cpio and the
file data is present only in the last link. This is the behaviour of
GNU's cpio and is supported by the kernel initramfs extractor.Signed-off-by: Luciano Rocha
Cc: Al Viro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs
when CONFIG_BLK_DEV_INITRAMFS is not selected. This saves another 4 kbytes
on most platfoms (some reserve PAGE_SIZE for initramfs).Signed-off-by: Jean-Paul Saman
Cc: Al Viro
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The file init/initramfs.c is always compiled and linked in the kernel
vmlinux even when BLK_DEV_RAM and BLK_DEV_INITRD are disabled and the
system isn't using any form of an initramfs or initrd. In this situation
the code is only used to unpack a (static) default initial rootfilesystem.
The current init/initramfs.c code. usr/initramfs_data.o compiles to a size
of ~15 kbytes. Disabling BLK_DEV_RAM and BLK_DEV_INTRD shrinks the kernel
code size with ~60 Kbytes.This patch avoids compiling in the code and data for initramfs support if
CONFIG_BLK_DEV_INITRD is not defined. Instead of the initramfs code and
data it uses a small routine in init/noinitramfs.c to setup an initial
static default environment for mounting a rootfilesystem later on in the
kernel initialisation process. The new code is: 164 bytes of size.The patch is separated in two parts:
1) doesn't compile initramfs code when CONFIG_BLK_DEV_INITRD is not set
2) changing all plaforms vmlinux.lds.S files to not reserve an area of
PAGE_SIZE when CONFIG_BLK_DEV_INITRD is not set.[deweerdt@free.fr: warning fix]
Signed-off-by: Jean-Paul Saman
Cc: Al Viro
Cc:
Signed-off-by: Frederik Deweerdt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
tty_wakeup calls wake_up_interruptible(&tty->write_wait) itself, it's not
needed to wake up again after tty_wakeup returns.Signed-off-by: Jiri Slaby
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Prevent things like this:
block/ll_rw_blk.c: In function 'submit_bio':
block/ll_rw_blk.c:3222: warning: unused variable 'count'inlines are very, very preferable to macros.
- remove unused get_cpu_vm_events() macro
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
include/linux/byteorder/pdp_endian.h is completely unused, and the comment in
the file itself states that it's both untested and only a proof-of-concept.Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
currently it's
1) if *oldlenp == 0,
don't writeback anything2) if *oldlenp >= table->maxlen,
don't writeback more than table->maxlen bytes and rewrite *oldlenp
don't look at underlying type granularity3) if 0 < *oldlenp < table->maxlen,
*cough*
string sysctls don't writeback more than *oldlenp bytes.
OK, that's because sizeof(char) == 1int sysctls writeback anything in (0, table->maxlen] range
Though accept integers divisible by sizeof(int) for writing.sysctl_jiffies and sysctl_ms_jiffies don't writeback anything but
sizeof(int), which violates 1) and 2).So, make sysctl_jiffies and sysctl_ms_jiffies accept
a) *oldlenp == 0, not doing writeback
b) *oldlenp >= sizeof(int), writing one integer.-EINVAL still returned for *oldlenp == 1, 2, 3.
Signed-off-by: Alexey Dobriyan
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This does several things.
- It moves looking up of the current foreground console into process
context where we can safely take the semaphore that protects this
operation.
- It uses the new flavor of work queue processing.
- This generates a factor of do_SAK, __do_SAK that runs immediately.
- This calls __do_SAK with the console semaphore held ensuring nothing
else happens to the console while we process the SAK operation.
- With the console SAK processing moved into process context this
patch removes the xchg operations that I used to attempt to attomically
update struct pid, because of the strange locking used in the SAK processing.
With SAK using the normal console semaphore nothing special is needed.Cc: Oleg Nesterov
Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add retain_initrd option to control freeing of initrd memory after
extraction. By default, free memory as previously.The first boot will need to hold a copy of the in memory fs for the second
boot. This image can be large (much larger than the kernel), hence we can
save time when the memory loader is slow. Also, it reduces the memory
footprint while extracting the first boot since you don't need another copy
of the fs.Signed-off-by: Michael Neuling
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for auxiliary displays, the ks0108 LCD controller, the
cfag12864b LCD and adds a framebuffer device: cfag12864bfb.- Add a "auxdisplay/" folder in "drivers/" for auxiliary display
drivers.- Add support for the ks0108 LCD Controller as a device driver. (uses
parport interface)- Add support for the cfag12864b LCD as a device driver. (uses ks0108
LCD Controller driver)- Add a framebuffer device called cfag12864bfb. (uses cfag12864b LCD
driver)- Add the usual Documentation, includes, Makefiles, Kconfigs,
MAINTAINERS, CREDITS...- Miguel Ojeda will maintain all the stuff above.
[rdunlap@xenotime.net: workqueue fixups]
[akpm@osdl.org: kconfig fix]
Signed-off-by: Miguel Ojeda Sandonis
Cc: Greg KH
Acked-by: Paulo Marques
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
