Commit Graph

4704 Commits

Author SHA1 Message Date
Ingo Molnar
db8862eafe Merge branch 'linus' into tracing/hw-branch-tracing 2008-12-24 21:08:26 +01:00
Linus Torvalds
c47a75a45f Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: don't cond_resched() when irqs_disabled()
  ACPI: fix 2.6.28 acpi.debug_level regression
2008-12-22 14:52:00 -08:00
Linus Torvalds
8837e341cc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: Fix a Oops bug in omap soc driver.
  ALSA: hda - Remove non-working headphone control for Dell laptops
  ALSA: hda - Add no-jd model for IDT 92HD73xx
  ALSA: Revert "ALSA: hda: removed unneeded hp_nid references"
  ALSA: hda - Add quirk for Dell Studio 17
  ALSA: hda - Fix silent HP output on D975
2008-12-19 11:37:07 -08:00
Bjorn Helgaas
e76f427611 ACPI: fix 2.6.28 acpi.debug_level regression
acpi_early_init() was changed to over-write the cmdline param,
making it really inconvenient to set debug flags at boot-time.

Also,
This sets the default level to "info", which is what all the ACPI
drivers use.  So to enable messages from drivers, you only have to
supply the "layer" (a.k.a. "component").  For non-"info" ACPI core
and ACPI interpreter messages, you have to supply both level and
layer masks, as before.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-19 04:38:32 -05:00
Ingo Molnar
30cd324e97 Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' into tracing/core
Conflicts:
	include/linux/ftrace.h
2008-12-19 09:42:40 +01:00
Takashi Iwai
9e43f0de69 ALSA: hda - Add no-jd model for IDT 92HD73xx
Added the model without the jack-detection for some desktops that
have really no jack-detection.  The recent driver caused regressions
regarding the sound output on such machines.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-19 08:22:26 +01:00
Steven Rostedt
f38f1d2aa5 trace: add a way to enable or disable the stack tracer
Impact: enhancement to stack tracer

The stack tracer currently is either on when configured in or
off when it is not. It can not be disabled when it is configured on.
(besides disabling the function tracer that it uses)

This patch adds a way to enable or disable the stack tracer at
run time. It defaults off on bootup, but a kernel parameter 'stacktrace'
has been added to enable it on bootup.

A new sysctl has been added "kernel.stack_tracer_enabled" to let
the user enable or disable the stack tracer at run time.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 12:56:24 +01:00
Takashi Iwai
e28d83223a ALSA: hda - Fix silent HP output on D975
Some desktops seems to have no HP/mic jack detection on the front panel,
which results in the silent output in the recent driver, because the
driver mutes the output (to save power) when no plug is detected.

This patch adds a new model that disables the jack-detection.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-18 09:06:29 +01:00
Phil Endecott
9a9fafb894 USB: fix comment about endianness of descriptors
This patch fixes a comment and clarifies the documentation about the
endianness of descriptors. The current policy is that descriptors will
be little-endian at the API even on big-endian systems; however the
/proc/bus/usb API predates this policy and presents descriptors with
some multibyte fields byte-swapped.

Signed-off-by: Phil Endecott <usb_endian_patch@chezphil.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-12-17 10:49:14 -08:00
Peter Korsgaard
c33ba39214 USB: Documentation/usb/gadget_serial.txt: update to match driver use_acm behaviour
Commit 7bb5ea54 (usb gadget serial: use composite gadget framework)
changed the default for the use_acm parameter from 0 to 1.
Update the documentation to match.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-12-17 10:49:13 -08:00
Pete Zaitcev
aacf4a0135 usbmon: drop bogus 0t from usbmon.txt
The example is incorrect: there is no 0t socket (the '1t' format has no
bus number in it). Also, correct the broken sentence for USB Tag.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-12-17 10:49:12 -08:00
Nicolas Pitre
1ada1441e7 [ARM] 5348/1: fix documentation wrt location of the alignment trap interface
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-12-15 10:34:58 +00:00
Linus Torvalds
3b666ce6a2 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0
  documentation: local_ops fix on_each_cpu
2008-12-04 21:39:41 -08:00
Ingo Molnar
b8307db247 Merge commit 'v2.6.28-rc7' into tracing/core 2008-12-04 09:07:19 +01:00
Ingo Molnar
222658e08f Merge branches 'tracing/branch-tracer', 'tracing/ftrace', 'tracing/function-graph-tracer', 'tracing/markers', 'tracing/powerpc', 'tracing/stack-tracer' and 'tracing/tracepoints' into tracing/core 2008-12-02 09:20:44 +01:00
FUJITA Tomonori
1d678f365d DMA-API.txt: fix description of pci_map_sg/dma_map_sg scatterlists handling
- pci_map_sg/dma_map_sg are used with a scatter gather list that doesn't
  come from the block layer (e.g.  some network drivers do).

- how IOMMUs merge adjacent elements of the scatter/gather list is
  independent of how the block layer determines sees elements.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 19:55:24 -08:00
Davide Libenzi
7ef9964e6d epoll: introduce resource usage limits
It has been thought that the per-user file descriptors limit would also
limit the resources that a normal user can request via the epoll
interface.  Vegard Nossum reported a very simple program (a modified
version attached) that can make a normal user to request a pretty large
amount of kernel memory, well within the its maximum number of fds.  To
solve such problem, default limits are now imposed, and /proc based
configuration has been introduced.  A new directory has been created,
named /proc/sys/fs/epoll/ and inside there, there are two configuration
points:

  max_user_instances = Maximum number of devices - per user

  max_user_watches   = Maximum number of "watched" fds - per user

The current default for "max_user_watches" limits the memory used by epoll
to store "watches", to 1/32 of the amount of the low RAM.  As example, a
256MB 32bit machine, will have "max_user_watches" set to roughly 90000.
That should be enough to not break existing heavy epoll users.  The
default value for "max_user_instances" is set to 128, that should be
enough too.

This also changes the userspace, because a new error code can now come out
from EPOLL_CTL_ADD (-ENOSPC).  The EMFILE from epoll_create() was already
listed, so that should be ok.

[akpm@linux-foundation.org: use get_current_user()]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: <stable@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Reported-by: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 19:55:24 -08:00
roel kluin
dc8c214a9c spi documentation: use __initdata on struct
Use __initdata for data, not __init.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 19:55:24 -08:00
Mark Fasheh
a2eee69b81 ocfs2: Small documentation update
Remove some features from the "not-supported" list that are actually
supported now.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-12-01 14:46:49 -08:00
Mathieu Desnoyers
02d43b1d13 documentation: local_ops fix on_each_cpu
Impact: update code example in documentation

* Dr. David Alan Gilbert (dave@treblig.org) wrote:
[...]
>  I noticed while looking at something else that the example in
>  local_ops.txt still has the 4 operand on_each_cpu in the latest git;
>  I don't know the rest of the code around there very well so I thought
>  it best to mention it rather than post a patch.

Reported-by: Dr. David Alan Gilbert <dave@treblig.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-01 13:51:26 +01:00
Linus Torvalds
7bbc67fbf6 Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  ftrace: prevent recursion
  tracing, doc: update mmiotrace documentation
  x86, mmiotrace: fix buffer overrun detection
  function tracing: fix wrong position computing of stack_trace
2008-11-30 13:05:31 -08:00
Linus Torvalds
8c7b905a2d Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] powernow-k8: ignore out-of-range PstateStatus value
  [CPUFREQ] Documentation: Add Blackfin to list of supported processors
2008-11-30 11:43:41 -08:00
frans
1838e39214 Trivial Documentation/filesystems/ramfs-rootfs-initramfs.txt fix
A very minor patch on ramfs-rootfs-initramfs.txt: update the location
where CONFIG_INITRAMFS_SOURCE lives in menuconfig

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30 11:40:56 -08:00
Linus Torvalds
42182c7850 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Check model for Dell 92HD73xx laptops
  ALSA: hda - mark Dell studio 1535 quirk
  ALSA: hda - No 'Headphone as Line-out' swich without line-outs
  ALSA: hda - Fix AFG power management on IDT 92HD* codecs
  ALSA: hda - Fix caching of SPDIF status bits
  ALSA: hda - Add a quirk for Dell Studio 15
  ALSA: hda: Add STAC_DELL_M4_3 quirk
  sound/sound_core: Fix sparse warnings
  ALSA: hda: STAC_DELL_M6 EAPD
2008-11-30 11:36:57 -08:00
Linus Torvalds
b31a0fecd1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - add support for new USB Tablet PCs
  Input: replace spin_lock_bh with spin_lock_irqsave in ml_ff_playback
  Input: i8042 - add Compal Hel80 laptop to nomux blacklist
  Input: cm109 - add keymap for ATCom AU-100 phone
  Input: fix the example of an input device driver
  Input: psmouse - fix incorrect validate_byte check in OLPC protocol
  Input: atkbd - cancel delayed work before freeing its structure
  Input: atkbd - add keymap quirk for Inventec Symphony systems
  Input: i8042 - add Dell XPS M1530 to nomux list
  Input: elo - fix format string in elo driver
2008-11-30 11:05:21 -08:00
Nikanth Karthikesan
f08340c5d6 tracepoints: Documentation TPPROTO misspelt in Documentation/tracepoints.txt
Impact: fix typo in documentation

TPPROTO is misspelt in Documentation/tracepoints.txt
Kept me wondering what was wrong, when I was trying to add a new tracepoint
subsystem.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-29 15:13:42 +01:00
Wu Fengguang
a838c2ec6e markers: comment marker_synchronize_unregister() on data dependency
Add document and comments on marker_synchronize_unregister(): it
should be called before freeing resources that the probes depend on.

Based on comments from Lai Jiangshan and Mathieu Desnoyers.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28 16:47:41 +01:00
walimis
c072c24975 ftrace: improve documentation
Impact: extend documentation with notice of using wild cards correctly

We know that we can use wild cards to set set_ftrace_filter, but there's
problem when using them naively such as:

   echo h* > /debug/tracing/set_ftrace_filter

If there are files named with "h" prefix in current directory,
echo "h*" will echo these filenames to set_ftrace_filter, not the
intended "h*".

For example:

  $ cat /debug/tracing/available_filter_functions |grep ^hr |wc -l
  23
  $ ls
  $ touch hraa hrdd
  $ ls
  hraa  hrdd
  $ echo hr* > /debug/tracing/set_ftrace_filter
  $ cat /debug/tracing/set_ftrace_filter

No output in /debug/tracing/set_ftrace_filter!

If we use '' to escape wild cards, it works:

  $ ls
  hraa  hrdd
  $ echo "hr*" > /debug/tracing/set_ftrace_filter
  $ cat /debug/tracing/set_ftrace_filter |wc -l
  23

This problem can lead to unexpected result if current directory has a
lot of files.

Signed-off-by: walimis <walimisdev@gmail.com>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28 13:15:14 +01:00
Steven Rostedt
df4fc31558 ftrace: add function tracing to single thread
Impact: feature to function trace a single thread

This patch adds the ability to function trace a single thread.
The file:

  /debugfs/tracing/set_ftrace_pid

contains the pid to trace. Valid pids are any positive integer.
Writing any negative number to this file will disable the pid
tracing and the function tracer will go back to tracing all of
threads.

This feature works with both static and dynamic function tracing.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-26 06:52:52 +01:00
Robin Getz
121fe86bdf [CPUFREQ] Documentation: Add Blackfin to list of supported processors
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2008-11-25 13:38:29 -05:00
Takashi Iwai
b6283534a3 Merge branch 'topic/fix/hda' into for-linus 2008-11-25 17:21:32 +01:00
Takashi Iwai
661cd8fb52 ALSA: hda - Check model for Dell 92HD73xx laptops
Check the model type instead of PCI SSID for detection of the mic types
on Dell laptops with IDT 92HD73xx codecs.  In this way, a new laptop
can be tested via model module option.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-25 15:18:29 +01:00
Ingo Molnar
6f893fb2e8 Merge branches 'tracing/branch-tracer', 'tracing/fastboot', 'tracing/ftrace', 'tracing/function-return-tracer', 'tracing/power-tracer', 'tracing/powerpc', 'tracing/ring-buffer', 'tracing/stack-tracer' and 'tracing/urgent' into tracing/core 2008-11-24 17:46:24 +01:00
Pekka Paalanen
fb91ee6cf5 tracing, doc: update mmiotrace documentation
Impact: update documentation

Update to reflect the current state of the tracing framework:

 - "none" tracer has been replaced by "nop" tracer
 - tracing_enabled must be toggled when changing buffer size

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23 20:33:24 +01:00
Török Edwin
b54d3de9f3 tracing: identify which executable object the userspace address belongs to
Impact: modify+improve the userstacktrace tracing visualization feature

Store thread group leader id, and use it to lookup the address in the
process's map. We could have looked up the address on thread's map,
but the thread might not exist by the time we are called. The process
might not exist either, but if you are reading trace_pipe, that is
unlikely.

Example usage:

 mount -t debugfs nodev /sys/kernel/debug
 cd /sys/kernel/debug/tracing
 echo userstacktrace >iter_ctrl
 echo sym-userobj >iter_ctrl
 echo sched_switch >current_tracer
 echo 1 >tracing_enabled
 cat trace_pipe >/tmp/trace&
 .... run application ...
 echo 0 >tracing_enabled
 cat /tmp/trace

You'll see stack entries like:

   /lib/libpthread-2.7.so[+0xd370]

You can convert them to function/line using:

   addr2line -fie /lib/libpthread-2.7.so 0xd370

Or:

   addr2line -fie /usr/lib/debug/libpthread-2.7.so 0xd370

For non-PIC/PIE executables this won't work:

   a.out[+0x73b]

You need to run the following: addr2line -fie a.out 0x40073b
(where 0x400000 is the default load address of a.out)

Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23 09:45:42 +01:00
Török Edwin
02b67518e2 tracing: add support for userspace stacktraces in tracing/iter_ctrl
Impact: add new (default-off) tracing visualization feature

Usage example:

 mount -t debugfs nodev /sys/kernel/debug
 cd /sys/kernel/debug/tracing
 echo userstacktrace >iter_ctrl
 echo sched_switch >current_tracer
 echo 1 >tracing_enabled
 .... run application ...
 echo 0 >tracing_enabled

Then read one of 'trace','latency_trace','trace_pipe'.

To get the best output you can compile your userspace programs with
frame pointers (at least glibc + the app you are tracing).

Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23 09:25:15 +01:00
Ingo Molnar
a0a70c735e Merge branches 'tracing/profiling', 'tracing/options' and 'tracing/urgent' into tracing/core 2008-11-23 09:10:32 +01:00
Takashi Iwai
c879c634c9 Merge branches 'topic/fix/hda' and 'topic/fix/sound-core' into for-linus 2008-11-21 08:39:36 +01:00
Matthew Ranostay
3a7abfd2ba ALSA: hda: Add STAC_DELL_M4_3 quirk
Added STAC_DELL_M4_3 quirk for Dell systems, also reorganized the
board config switch to assign number of digital muxes, microphones,
and SPDIF muxes via the PCI quirk defined.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-21 08:17:00 +01:00
Linus Torvalds
4dd61d92d7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (23 commits)
  net: fix tiny output corruption of /proc/net/snmp6
  atl2: don't request irq on resume if netif running
  ipv6: use seq_release_private for ip6mr.c /proc entries
  pkt_sched: fix missing check for packet overrun in qdisc_dump_stab()
  smc911x: Fix printf format typo in smc911x driver.
  asix: Fix asix-based cards connecting to 10/100Mbs LAN.
  mv643xx_eth: fix recycle check bound
  mv643xx_eth: fix the order of mdiobus_{unregister, free}() calls
  sh: sh_eth: Update to change of mii_bus
  TPROXY: supply a struct flowi->flags argument in inet_sk_rebuild_header()
  TPROXY: fill struct flowi->flags in udp_sendmsg()
  net: ipg.c fix bracing on endian swapping
  phylib: Fix auto-negotiation restart avoidance
  net: jme.c rxdesc.flags is __le16, other missing endian swaps
  phylib: fix phy name example in documentation
  net: Do not fire linkwatch events until the device is registered.
  phonet: fix compilation with gcc-3.4
  ixgbe: fix compilation with gcc-3.4
  pktgen: fix multiple queue warning
  net: fix ip_mr_init() error path
  ...
2008-11-20 13:12:14 -08:00
Linus Torvalds
4f7dbc7ff4 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: more general identifier for Phoenix BIOS
  AMD IOMMU: check for next_bit also in unmapped area
  AMD IOMMU: fix fullflush comparison length
  AMD IOMMU: enable device isolation per default
  AMD IOMMU: add parameter to disable device isolation
  x86, PEBS/DS: fix code flow in ds_request()
  x86: add rdtsc barrier to TSC sync check
  xen: fix scrub_page()
  x86: fix es7000 compiling
  x86, bts: fix unlock problem in ds.c
  x86, voyager: fix smp generic helper voyager breakage
  x86: move iomap.h to the new include location
2008-11-19 18:51:56 -08:00
Randy Dunlap
1c207f952a Documentation/kernel-parameters.txt: add min_addr, fix max_addr
Add "min_addr" documentation.
For "max_addr", add nn before [KMG] since a number is needed and this
is consistent with other uses of [KMG].

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19 18:49:57 -08:00
Paulius Zaleckas
9d6ada9f41 phylib: fix phy name example in documentation
All MDIO bus drivers currently name bus with "%x" format.
There is one exception where mv643xx_eth driver is using "%d".
Phy address on the bus uses format "%02x".

Fixing phy name example to match all real life MDIO drivers.

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 15:38:24 -08:00
Ingo Molnar
9676e73a9e Merge branches 'tracing/ftrace' and 'tracing/urgent' into tracing/core
Conflicts:
	kernel/trace/ftrace.c

[ We conflicted here because we backported a few fixes to
  tracing/urgent - which has different internal APIs. ]
2008-11-19 10:04:25 +01:00
Joerg Roedel
3ce1f93c6d AMD IOMMU: enable device isolation per default
Impact: makes device isolation the default for AMD IOMMU

Some device drivers showed double-free bugs of DMA memory while testing
them with AMD IOMMU. If all devices share the same protection domain
this can lead to data corruption and data loss. Prevent this by putting
each device into its own protection domain per default.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:31 +01:00
Joerg Roedel
e5e1f606ec AMD IOMMU: add parameter to disable device isolation
Impact: add a new AMD IOMMU kernel command line parameter

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:43:23 +01:00
Ingo Molnar
0a7ad64531 tracepoints: format documentation
Impact: documentation update

Properly format Documentation/tracepoints.txt - it was full of
overlong lines and other typographical problems.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 09:01:38 +01:00
Mathieu Desnoyers
0dcf8fe5fe tracepoints, docs: marker_synchronize_unregister->tracepoint_synchronize_unregister
Impact: documentation update.

Signed-off-by: Zhaolei <zhaolei@cn.fujitsu.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 09:01:38 +01:00
Mathieu Desnoyers
8fd88d1590 tracepoints: documentation fix for teardown
Impact: documentation update

Need a tracepoint_synchronize_unregister() before the end of exit()
to make sure every probe callers have exited the non preemptible
section and thus are not executing the probe code anymore.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 09:01:37 +01:00
Mathieu Desnoyers
7e066fb870 tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()
Impact: API *CHANGE*. Must update all tracepoint users.

Add DEFINE_TRACE() to tracepoints to let them declare the tracepoint
structure in a single spot for all the kernel. It helps reducing memory
consumption, especially when declaring a lot of tracepoints, e.g. for
kmalloc tracing.

*API CHANGE WARNING*: now, DECLARE_TRACE() must be used in headers for
tracepoint declarations rather than DEFINE_TRACE(). This is the sane way
to do it. The name previously used was misleading.

Updates scheduler instrumentation to follow this API change.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 09:01:36 +01:00