Commit Graph

169997 Commits

Author SHA1 Message Date
Linus Torvalds
6e80133f7f Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache: (31 commits)
  FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS=n
  SLOW_WORK: Fix GFS2 to #include <linux/module.h> before using THIS_MODULE
  SLOW_WORK: Fix CIFS to pass THIS_MODULE to slow_work_register_user()
  CacheFiles: Don't log lookup/create failing with ENOBUFS
  CacheFiles: Catch an overly long wait for an old active object
  CacheFiles: Better showing of debugging information in active object problems
  CacheFiles: Mark parent directory locks as I_MUTEX_PARENT to keep lockdep happy
  CacheFiles: Handle truncate unlocking the page we're reading
  CacheFiles: Don't write a full page if there's only a partial page to cache
  FS-Cache: Actually requeue an object when requested
  FS-Cache: Start processing an object's operations on that object's death
  FS-Cache: Make sure FSCACHE_COOKIE_LOOKING_UP cleared on lookup failure
  FS-Cache: Add a retirement stat counter
  FS-Cache: Handle pages pending storage that get evicted under OOM conditions
  FS-Cache: Handle read request vs lookup, creation or other cache failure
  FS-Cache: Don't delete pending pages from the page-store tracking tree
  FS-Cache: Fix lock misorder in fscache_write_op()
  FS-Cache: The object-available state can't rely on the cookie to be available
  FS-Cache: Permit cache retrieval ops to be interrupted in the initial wait phase
  FS-Cache: Use radix tree preload correctly in tracking of pages to be stored
  ...
2009-11-30 13:33:48 -08:00
Julia Lawall
cc9a2c8301 arch/alpha/kernel: Add kmalloc NULL tests
Check that the result of kmalloc is not NULL before passing it to other
functions.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
    when != x != NULL
    when != (x || ...)
(
kfree(x)
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>
2009-11-30 15:38:19 -05:00
Julia Lawall
04d8a9db89 arch/alpha/kernel/sys_ruffian.c: Use DIV_ROUND_CLOSEST
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>
2009-11-30 15:37:25 -05:00
Pete Eberlein
e49bd72f9c V4L/DVB (13372): staging/go7007: fix mutex function usage for s2250
Fix mutex function usage, which was overlooked in a previous patch.

Signed-off-by: Pete Eberlein <pete@sensoray.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-30 17:49:15 -02:00
Mauro Carvalho Chehab
7924326fef staging/go7007: Fix compilation by re-adding the missing s2250-loader.h
As pointed by Stefan Lippers-Hollmann <s.L-H@gmx.de>,

Commit:	fd9a40da1d broke s2250
compilation.

This patch re-adds the missing s2250-loader.h

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-30 17:37:20 -02:00
Helight.Xu
9eaa192d89 x86: Fix a section mismatch in arch/x86/kernel/setup.c
copy_edd() should be __init.
warning msg:
WARNING: vmlinux.o(.text+0x7759): Section mismatch in reference from the
function copy_edd() to the variable .init.data:boot_params
The function copy_edd() references
the variable __initdata boot_params.
This is often because copy_edd lacks a __initdata
annotation or the annotation of boot_params is wrong.

Signed-off-by: ZhenwenXu <helight.xu@gmail.com>
LKML-Reference: <4B139F8F.4000907@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-11-30 11:16:49 -08:00
Johannes Berg
827d42c9ac mac80211: fix spurious delBA handling
Lennert Buytenhek noticed that delBA handling in mac80211
was broken and has remotely triggerable problems, some of
which are due to some code shuffling I did that ended up
changing the order in which things were done -- this was

  commit d75636ef9c
  Author: Johannes Berg <johannes@sipsolutions.net>
  Date:   Tue Feb 10 21:25:53 2009 +0100

    mac80211: RX aggregation: clean up stop session

and other parts were already present in the original

  commit d92684e660
  Author: Ron Rindjunsky <ron.rindjunsky@intel.com>
  Date:   Mon Jan 28 14:07:22 2008 +0200

      mac80211: A-MPDU Tx add delBA from recipient support

The first problem is that I moved a BUG_ON before various
checks -- thereby making it possible to hit. As the comment
indicates, the BUG_ON can be removed since the ampdu_action
callback must already exist when the state is != IDLE.

The second problem isn't easily exploitable but there's a
race condition due to unconditionally setting the state to
OPERATIONAL when a delBA frame is received, even when no
aggregation session was ever initiated. All the drivers
accept stopping the session even then, but that opens a
race window where crashes could happen before the driver
accepts it. Right now, a WARN_ON may happen with non-HT
drivers, while the race opens only for HT drivers.

For this case, there are two things necessary to fix it:
 1) don't process spurious delBA frames, and be more careful
    about the session state; don't drop the lock

 2) HT drivers need to be prepared to handle a session stop
    even before the session was really started -- this is
    true for all drivers (that support aggregation) but
    iwlwifi which can be fixed easily. The other HT drivers
    (ath9k and ar9170) are behaving properly already.

Reported-by: Lennert Buytenhek <buytenh@marvell.com>
Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-30 13:55:51 -05:00
Johannes Berg
4253119acf mac80211: fix two remote exploits
Lennert Buytenhek noticed a remotely triggerable problem
in mac80211, which is due to some code shuffling I did
that ended up changing the order in which things were
done -- this was in

  commit d75636ef9c
  Author: Johannes Berg <johannes@sipsolutions.net>
  Date:   Tue Feb 10 21:25:53 2009 +0100

    mac80211: RX aggregation: clean up stop session

The problem is that the BUG_ON moved before the various
checks, and as such can be triggered.

As the comment indicates, the BUG_ON can be removed since
the ampdu_action callback must already exist when the
state is OPERATIONAL.

A similar code path leads to a WARN_ON in
ieee80211_stop_tx_ba_session, which can also be removed.

Cc: stable@kernel.org [2.6.29+]
Cc: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-30 13:52:21 -05:00
Gertjan van Wingerde
e3a41d7b99 .gitignore: Add bzip2 compressed files
We can have bzip2 compressed images nowadays.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-30 08:39:36 -08:00
Helge Deller
33a932d143 parisc: fix unwind with recent gcc versions
kernel unwinding is broken with gcc >= 4.x.  Part of the problem is that
binutils seems very sensitive to where the unwind information is stored.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-30 08:20:24 -08:00
Russell King
8ee763b9c8 ALSA: AACI: fix recording bug
pcm->r[1].slots is the double rate slot information, not the
capture information.  For capture, 'pcm' will already be the
capture ac97 pcm structure.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-30 14:50:55 +01:00
Russell King
4acd57c3de ALSA: AACI: fix AC97 multiple-open bug
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-30 14:50:53 +01:00
Takashi Iwai
77a9d3eb77 Merge branch 'fix/asoc' into fix/misc 2009-11-30 14:50:37 +01:00
David S. Miller
0cae200eec b44: Fix wedge when using netconsole.
Fixes kernel bugzilla #14691

Due to the way netpoll works, it is perfectly legal to see
NAPI already scheduled when new device events are pending
in b44_interrupt().

So logging a message about it is wrong and in fact harmful.

Based upon a patch by Andreas Mohr.

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-30 00:13:28 -08:00
Dan Carpenter
40be261dfd wan: cosa: drop chan->wsem on error path
The other paths all drop chan->wsem.  This was found by a static
checker (smatch).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-30 00:06:51 -08:00
Tom Zanussi
8ea339adc0 perf trace/scripting: Add Fedora libperl install note to doc
Fedora needs perl-ExtUtils-Embed for Perl scripting, which also
brings along libperl-devel; note this info for the convenience
of Fedora users.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259565529-6407-5-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-30 09:04:01 +01:00
Tom Zanussi
61381de050 perf trace/scripting: Fix Perl common_* access functions
The common_* functions (e.g. common_pc(), etc) are exported as
common_* but named get_common_*, resulting in unresolved
subroutine errors when executing scripts.

Make the internal and external names match.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259565529-6407-4-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-30 09:04:00 +01:00
Tom Zanussi
e136323c5a perf trace/scripting: Ignore shadowed variable warning for perf-trace-perl.c
The debugging versions of the ENTER and LEAVE internal perl
macros, used when embedding perl, define a local block with a
my_perl perl variable that shadows a global variable of the same
name, which is also the name expected by the embedding API for
the embedded interpreter.

Since we don't have control over the code generated in this case
(it's an externality) and can't get rid of the warning, ignore it.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259565529-6407-3-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-30 09:04:00 +01:00
Tom Zanussi
f8be4231f8 perf trace/scripting: Silence PERL_EMBED_* backtick errors
The backtick shell substitutions for PERL_EMBED_LDOPT/CCOPT make
a lot of noise on stderr if Embed.pm isn't installed - this
silences them.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259565529-6407-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-30 09:03:59 +01:00
Florian Fainelli
3c91c7ae84 ep93xx-eth: check for zero MAC address on probe, not on device open
If we happen to have registered the driver without passing
a MAC address, we will print a zero MAC address and register
the interface with this invalid address, this is confusin. This
patch moves the checking of a valid ethernet address and the
generation of a random one down from the open function to
the probe function.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 23:50:32 -08:00
Russell King - ARM Linux
d5ccd67bb7 NET: smc91x: Fix irq flags
smc91x.h defines SMC_IRQ_FLAGS to be -1 when it wants the interrupt
flags to be taken from the resource structure.  However, d280ead
changed this to checking for non-zero resource flags.

Unfortunately, this means that on some platforms, we end up passing
'-1' to request_irq rather than the desired result.  Combine the two
conditions into one so that the IRQ flags are taken from the resource
if either SMC_IRQ_FLAGS is -1 or the resource flags specify an
interrupt trigger.

This restores network on at least the Versatile platform.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 23:47:14 -08:00
Steve Glendinning
6c53b1b15e smsc9420: prevent BUG() if ethtool is called with interface down
This patch fixes a null pointer dereference BUG() if ethtool is used on
an smsc9420 interface while it is down, because the phy_dev is only
allocated while the interface is up.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 23:14:45 -08:00
Ivan Vecera
cc098dc705 r8169: restore mac addr in rtl8169_remove_one and rtl_shutdown
The newer chipsets (all PCI-E) are known that they need full power cycle
(AC or battery removal) to reset MAC address to a  hardwired one. Previous
patch to address this problem loads the original MAC address from EEPROM.
But it brought other problem for which it is necessary to introduce a new
module parameter.
However, it might suffice to restore the initial MAC address before
shutdown/reboot/kexec and when removing the module.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 23:12:52 -08:00
David Ford
bbf31bf18d ipv4: additional update of dev_net(dev) to struct *net in ip_fragment.c, NULL ptr OOPS
ipv4 ip_frag_reasm(), fully replace 'dev_net(dev)' with 'net', defined
previously patched into 2.6.29.

Between 2.6.28.10 and 2.6.29, net/ipv4/ip_fragment.c was patched,
changing from dev_net(dev) to container_of(...).  Unfortunately the goto
section (out_fail) on oversized packets inside ip_frag_reasm() didn't
get touched up as well.  Oversized IP packets cause a NULL pointer
dereference and immediate hang.

I discovered this running openvasd and my previous email on this is
titled:  NULL pointer dereference at 2.6.32-rc8:net/ipv4/ip_fragment.c:566

Signed-off-by: David Ford <david@blue-labs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 23:02:22 -08:00
Roger Oksanen
98468efddb e100: Use pci pool to work around GFP_ATOMIC order 5 memory allocation failure
pci_alloc_consistent uses GFP_ATOMIC allocation that may fail on some systems
with limited memory (Bug #14265). pci_pool_alloc allows waiting with
GFP_KERNEL.

Tested-by: Karol Lewandowski <karol.k.lewandowski@gmail.com>
Signed-off-by: Roger Oksanen <roger.oksanen@cs.helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 17:17:29 -08:00
Alan Stern
862f89b3d4 PM: fix irq enable/disable in runtime PM code
This patch (as1305) fixes a bug in the irq-enable settings and removes
some related overhead in the runtime PM code.

	In __pm_runtime_resume(), within the scope of the original
	spin_lock_irq(), we know that irqs are disabled.  There's no
	reason to go through a pair of enable/disable cycles when
	acquiring and releasing the parent's lock.

	In __pm_runtime_set_status(), irqs are already disabled when
	the parent's lock is acquired, and they must remain disabled
	when it is released.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-11-29 16:51:27 +01:00
Andrei Pelinescu-Onciul
5fdd4baef6 sctp: on T3_RTX retransmit all the in-flight chunks
When retransmitting due to T3 timeout, retransmit all the
in-flight chunks for the corresponding  transport/path, including
chunks sent less then 1 rto ago.
This is the correct behaviour according to rfc4960 section 6.3.3
E3 and
"Note: Any DATA chunks that were sent to the address for which the
 T3-rtx timer expired but did not fit in one MTU (rule E3 above)
 should be marked for retransmission and sent as soon as cwnd
 allows (normally, when a SACK arrives). ".

This fixes problems when more then one path is present and the T3
retransmission of the first chunk that timeouts stops the T3 timer
for the initial active path, leaving all the other in-flight
chunks waiting forever or until a new chunk is transmitted on the
same path and timeouts (and this will happen only if the cwnd
allows sending new chunks, but since cwnd was dropped to MTU by
the timeout => it will wait until the first heartbeat).

Example: 10 packets in flight, sent at 0.1 s intervals on the
primary path. The primary path is down and the first packet
timeouts. The first packet is retransmitted on another path, the
T3 timer for the primary path is stopped and cwnd is set to MTU.
All the other 9 in-flight packets will not be retransmitted
(unless more new packets are sent on the primary path which depend
on cwnd allowing it, and even in this case the 9 packets will be
retransmitted only after a new packet timeouts which even in the
best case would be more then RTO).

This commit reverts d0ce92910b and
also removes the now unused transport->last_rto, introduced in
 b6157d8e03.

p.s  The problem is not only when multiple paths are there.  It
can happen in a single homed environment.  If the application
stops sending data, it possible to have a hung association.

Signed-off-by: Andrei Pelinescu-Onciul <andrei@iptel.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 00:14:02 -08:00
Dominik Brodowski
5fa9167a1b pcmcia: rework the irq_req_t typedef
Most of the irq_req_t typedef'd struct can be re-worked quite
easily:

(1) IRQInfo2 was unused in any case, so drop it.

(2) IRQInfo1 was used write-only, so drop it.

(3) Instance (private data to be passed to the IRQ handler):
	Most PCMCIA drivers using pcmcia_request_irq() to actually
	register an IRQ handler set the "dev_id" to the same pointer
	as the "priv" pointer in struct pcmcia_device. Modify the two
	exceptions (ipwireless, ibmtr_cs) to also work this waym and
	set the IRQ handler's "dev_id" to p_dev->priv unconditionally.

(4) Handler is to be of type irq_handler_t.

(5) Handler != NULL already tells whether an IRQ handler is present.
	Therefore, we do not need the IRQ_HANDLER_PRESENT flag in
	irq_req_t.Attributes.

CC: netdev@vger.kernel.org
CC: linux-bluetooth@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: Jaroslav Kysela <perex@perex.cz>
CC: Jiri Kosina <jkosina@suse.cz>
CC: Karsten Keil <isdn@linux-pingi.de>
for the Bluetooth parts: Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:03:14 +01:00
Dominik Brodowski
dd2e5a1565 pcmcia: remove deprecated handle_to_dev() macro
Update remaining users and remove deprecated handle_to_dev() macro

CC: Harald Welte <laforge@gnumonks.org>
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-serial@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:03:10 +01:00
Dominik Brodowski
6838b03fc6 pcmcia: pcmcia_request_window() doesn't need a pointer to a pointer
pcmcia_request_window() only needs a pointer to struct pcmcia_device, not
a pointer to a pointer.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
Acked-by: Karsten Keil <keil@b1-systems.de> (for ISDN)
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:58 +01:00
Dominik Brodowski
82f88e3600 pcmcia: remove unused "window_t" typedef
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:52 +01:00
Dominik Brodowski
d7b0364bfc pcmcia: move some window-related code to pcmcia_ioctl.c
pcmcia_get_window() and pcmcia_get_mem_page() were only called from
pcmcia_ioctl.c. Therefore, move these functions to that file, and
remove the useless EXPORTs.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:51 +01:00
Magnus Damm
0bdf9b3dd3 pcmcia: Change window_handle_t logic to unsigned long
Logic changes based on top of the other patches:

This set of patches changed window_handle_t from being a pointer to an
unsigned long. The unsigned long is now a simple index into socket->win[].
Going from a pointer to unsigned long should leave the user space interface
unchanged unless I'm mistaken.

This change results in code that is less error prone and a user space
interface which is much cleaner and safer. A nice side effect is that we
are also are able to remove all members except one from window_t.

[ linux@dominikbrodowski.net:
	Update to 2.6.31. Also, a plain "index" to socket->win[] does not
	work, as several codepaths rely on "window_handle_t" being
	non-zero if used. Therefore, set the window_handle_t to the
	socket->win[] index + 1. ]

CC: netdev@vger.kernel.org
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:50 +01:00
Magnus Damm
16456ebabf pcmcia: Pass struct pcmcia_socket to pcmcia_get_mem_page()
No logic changes, just pass struct pcmcia_socket to pcmcia_get_mem_page()

[linux@dominikbrodowski.net: update to 2.6.31]
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:49 +01:00
Magnus Damm
868575d1e8 pcmcia: Pass struct pcmcia_device to pcmcia_map_mem_page()
No logic changes, just pass struct pcmcia_device to pcmcia_map_mem_page()

[linux@dominikbrodowski.net: update to 2.6.31]
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
Acked-by: Karsten Keil <keil@b1-systems.de> (for ISDN)
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:02:13 +01:00
Magnus Damm
f5560da549 pcmcia: Pass struct pcmcia_device to pcmcia_release_window()
No logic changes, just pass struct pcmcia_device to pcmcia_release_window().

[linux@dominikbrodowski.net: update to 2.6.31]
CC: netdev@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-28 18:01:26 +01:00
Ingo Molnar
cf72344d1a perf scripting: Fix build
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:11:00 +01:00
Tom Zanussi
1ae4a97125 perf trace: Add a scripts/perl/bin for perf trace shell scripts
To capture the relevant events for a given Perl script and to
avoid having to continually remember and type in long
command-lines, add a scripts/perl/bin directory containing two
simple shell scripts for each Perl script, one for recording and
one for processing/display. For example, to record perf data for
the rw-by-pid.pl script, run scripts/perl/bin/rw-by-pid-record
and to actually run the script and display the output run
scripts/perl/bin/rw-by-pid-report.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-8-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:27 +01:00
Tom Zanussi
89fbf0b8a0 perf trace: Add Documentation for perf trace Perl support
Adds perf-trace-perl Documentation and a link to it from the
perf-trace page.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-7-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:27 +01:00
Tom Zanussi
d1b93772be perf trace: Add interface to access perf data from Perl handlers
The Perl scripting support for perf trace allows most of a trace
event's data to be accessed directly as handler arguments, but
not all of it e.g. the less common fields aren't passed in.  To
give scripts access to the other fields and/or any other data or
metadata in the main perf executable that might be useful, a way
to access the C data in perf from Perl is needed; this patch
uses the Perl XS facility to do it for the common_xxx event
fields not passed to handler functions.

Context.pm exports three functions to Perl scripts that access
fields for the current event by calling back into perf:
common_pc(), common_flags() and common_lock_depth().  Support
for common_flags() field values was added to Core.pm and a
script used to sanity check these and other basic scripting
features, check-perf-trace.pl, was also added.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-6-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:27 +01:00
Tom Zanussi
bcefe12eff perf trace: Add perf trace scripting support modules for Perl
Add Perf-Trace-Util Perl module and some scripts that use it.
Core.pm contains Perl code to define and access flag and
symbolic fields. Util.pm contains general-purpose utility
functions.

Also adds some makefile bits to install them in
libexec/perf-core/scripts/perl (or wherever perfexec_instdir
points).

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-5-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:26 +01:00
Tom Zanussi
16c632de64 perf trace: Add Perl scripting support
Implement trace_scripting_ops to make Perl a supported perf
trace scripting language.

Additionally adds code that allows Perl trace scripts to access
the 'flag' and 'symbolic' (__print_flags(), __print_symbolic())
field information parsed from the trace format files.

Also adds the Perl implementation of the generate_script()
trace_scripting_op, which creates a ready-to-run perf trace Perl
script based on existing trace data.  Scripts generated by this
implementation print out all the fields for each event mentioned
in perf.data (and will detect and generate the proper scripting
code for 'flag' and 'symbolic' fields), and will additionally
generate handlers for the special 'trace_unhandled',
'trace_begin' and 'trace_end' handlers.  Script authors can
simply remove the printing code to implement their own custom
event handling.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-4-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:26 +01:00
Tom Zanussi
eb9a42caa7 perf trace: Add flag/symbolic format_flags
It's useful to know whether a field is a flag or symbolic field
for e.g. when generating scripts - it allows us to translate
those fields specially rather than literally as plain numeric
values.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-3-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:25 +01:00
Tom Zanussi
956ffd027b perf trace: Add scripting ops
Adds an interface, scripting_ops, that when implemented for a
particular scripting language enables built-in support for trace
stream processing using that language.

The interface is designed to enable full-fledged language
interpreters to be embedded inside the perf executable and
thereby make the full capabilities of the supported languages
available for trace processing.

See below for details on the interface.

This patch also adds a couple command-line options to 'perf
trace':

The -s option option is used to specify the script to be run.
Script names that can be used with -s take the form:

[language spec:]scriptname[.ext]

Scripting languages register a set of 'language specs' that can
be used to specify scripts for the registered languages.  The
specs can be used either as prefixes or extensions.

If [language spec:] is used, the script is taken as a script of
the matching language regardless of any extension it might have.
 If [language spec:] is not used, [.ext] is used to look up the
language it corresponds to.  Language specs are case
insensitive.

e.g. Perl scripts can be specified in the following ways:

Perl:scriptname
pl:scriptname.py # extension ignored
PL:scriptname
scriptname.pl
scriptname.perl

The -g [language spec] option gives users an easy starting point
for writing scripts in the specified language.  Scripting
support for a particular language can implement a
generate_script() scripting op that outputs an empty (or
near-empty) set of handlers for all the events contained in a
given perf.data trace file - this option gives users a direct
way to access that.

Adding support for a scripting language
---------------------------------------

The main thing that needs to be done do add support for a new
language is to implement the scripting_ops interface:

It consists of the following four functions:

    start_script()
    stop_script()
    process_event()
    generate_script()

start_script() is called before any events are processed, and is
meant to give the scripting language support an opportunity to
set things up to receive events e.g. create and initialize an
instance of a language interpreter.

stop_script() is called after all events are processed, and is
meant to give the scripting language support an opportunity to
clean up e.g. destroy the interpreter instance, etc.

process_event() is called once for each event and takes as its
main parameter a pointer to the binary trace event record to be
processed. The implementation is responsible for picking out the
binary fields from the event record and sending them to the
script handler function associated with that event e.g. a
function derived from the event name it's meant to handle e.g.
'sched::sched_switch()'.  The 'format' information for trace
events can be used to parse the binary data and map it into a
form usable by a given scripting language; see the Perl
implemention in subsequent patches for one possible way to
leverage the existing trace format parsing code in perf and map
that info into specific scripting language types.

generate_script() should generate a ready-to-run script for the
current set of events in the trace, preferably with bodies that
print out every field for each event.  Again, look at the Perl
implementation for clues as to how that can be done.  This is an
optional, but very useful op.

Support for a given language should also add a language-specific
setup function and call it from setup_scripting().  The
language-specific setup function associates the the scripting
ops for that language with one or more 'language specifiers'
(see below) using script_spec_register().  When a script name is
specified on the command line, the scripting ops associated with
the specified language are used to instantiate and use the
appropriate interpreter to process the trace stream.

In general, it should be relatively easy to add support for a
new language, especially if the language implementation supports
an interface allowing an interpreter to be 'embedded' inside
another program (in this case the containing program will be
'perf trace'). If so, it should be relatively straightforward to
translate trace events into invocations of user-defined script
functions where e.g. the function name corresponds to the event
type and the function parameters correspond to the event fields.
 The event and field type information exported by the event
tracing infrastructure (via the event 'format' files) should be
enough to parse and send any piece of trace data to the user
script.  The easiest way to see how this can be done would be to
look at the Perl implementation contained in
perf/util/trace-event-perl.c/.h.

There are a couple of other things that aren't covered by the
scripting_ops or setup interface and are technically optional,
but should be implemented if possible.  One of these is support
for 'flag' and 'symbolic' fields e.g. being able to use more
human-readable values such as 'GFP_KERNEL' or
HI/BLOCK_IOPOLL/TASKLET in place of raw flag values.  See the
Perl implementation to see how this can be done. The other thing
is support for 'calling back' into the perf executable to access
e.g. uncommon fields not passed by default into handler
functions, or any metadata the implementation might want to make
available to users via the language interface.  Again, see the
Perl implementation for examples.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-28 10:04:24 +01:00
Alan Cox
361c95119a V4L/DVB (13530): Fix wrong parameter order in memset
Edwin Török found the following:

In function ‘memset’,
inlined from ‘ir_input_init’ at drivers/media/common/ir-functions.c:67:
/home/edwin/builds/linux-2.6/arch/x86/include/asm/string_64.h:61:
warning: call to ‘__warn_memset_zero_len’ declared with attribute
warning: memset used with constant zero length parameter; this could be
due to transposed parameters
memset(ir->ir_codes, sizeof(ir->ir_codes), 0);

In actual practice the only caller I can find happens to already have cleared
the buffer before calling ir_input_init.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-27 18:50:43 -02:00
Hans Verkuil
9807362e47 V4L/DVB (13481): sh_mobile_ceu_camera: fix compile warning
Trivial fix for this compile warning:

v4l/sh_mobile_ceu_camera.c:1789: warning: label 'exit_free_irq' defined but not used

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-27 18:27:49 -02:00
Robert Lowery
0bc3518019 V4L/DVB (13436): cxusb: Fix hang on DViCO FusionHDTV DVB-T Dual Digital 4 (rev 1)
Address yet another regression introduced by the introduction of the zl10353
disable_i2c_gate field.

djh - I unmangled the patch which apparently got screwed up in the user's
email client.

Signed-off-by: Robert Lowery <rglowery@exemail.com.au>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-27 18:27:48 -02:00
Geert Uytterhoeven
d02b217a71 V4L/DVB (13412): SMS_SIANO_MDTV should depend on HAS_DMA
When building for Sun 3:

drivers/built-in.o: In function `smscore_unregister_device':
drivers/media/dvb/siano/smscoreapi.c:723: undefined reference to `dma_free_coherent'
drivers/built-in.o: In function `smscore_register_device':
drivers/media/dvb/siano/smscoreapi.c:365: undefined reference to `dma_alloc_coherent'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-11-27 18:27:46 -02:00
Arnaldo Carvalho de Melo
1ed091c45a perf tools: Consolidate symbol resolving across all tools
Now we have a very high level routine for simple tools to
process IP sample events:

	int event__preprocess_sample(const event_t *self,
				     struct addr_location *al,
				     symbol_filter_t filter)

It receives the event itself and will insert new threads in the
global threads list and resolve the map and symbol, filling all
this info into the new addr_location struct, so that tools like
annotate and report can further process the event by creating
hist_entries in their specific way (with or without callgraphs,
etc).

It in turn uses the new next layer function:

	void thread__find_addr_location(struct thread *self, u8 cpumode,
					enum map_type type, u64 addr,
					struct addr_location *al,
					symbol_filter_t filter)

This one will, given a thread (userspace or the kernel kthread
one), will find the given type (MAP__FUNCTION now, MAP__VARIABLE
too in the near future) at the given cpumode, taking vdsos into
account (userspace hit, but kernel symbol) and will fill all
these details in the addr_location given.

Tools that need a more compact API for plain function
resolution, like 'kmem', can use this other one:

	struct symbol *thread__find_function(struct thread *self, u64 addr,
					     symbol_filter_t filter)

So, to resolve a kernel symbol, that is all the 'kmem' tool
needs, its just a matter of calling:

	sym = thread__find_function(kthread, addr, NULL);

The 'filter' parameter is needed because we do lazy
parsing/loading of ELF symtabs or /proc/kallsyms.

With this we remove more code duplication all around, which is
always good, huh? :-)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-12-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-27 20:22:02 +01:00
Arnaldo Carvalho de Melo
62daacb51a perf tools: Reorganize event processing routines, lotsa dups killed
While implementing event__preprocess_sample, that will do all of
the symbol lookup in one convenient function, I noticed that
util/process_event.[ch] were not being used at all, then started
looking if there were other functions that could be shared
and...

All those functions really don't need to receive offset + head,
the only thing they did was common to all of them, so do it at
one place instead.

Stats about number of each type of event processed now is done
in a central place.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-11-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-27 20:22:01 +01:00