notrace signals that a function should not be traced. Most of the
time this is used by tracers to annotate code that cannot be
traced - it's in a volatile state (such as in user vdso context
or NMI context) or it's in the tracer internals.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
introduce test_cpu_cap() for raw access to the real CPU
capabilities as they are present in x86_capability.
(cpu_has() will shortcut certain tests during build-time)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
quad core 8 socket system will have apic id lifting.the apic id range could
be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
and that is larger than 2. So it is treated as a clustered_box.
and will get:
Marking TSC unstable due to TSCs unsynchronized
even if the CPUs have X86_FEATURE_CONSTANT_TSC set.
this quick fix will check if the cpu is from AMD.
but vsmp still needs that checking...
this patch is fix to make sure that vsmp not to be passed.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
e820_resource_resources could use insert_resource instead of request_resource
also move code_resource, data_resource, bss_resource, and crashk_res
out of e820_reserve_resources.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
x86: define outb_pic and inb_pic to stop using outb_p and inb_p
The delay between io port accesses to the PIC is now defined using outb_pic
and inb_pic. This fix provides the next step, using udelay(2) to define the
*PIC specific* timing requirements, rather than on bus-oriented timing, which
is not well calibrated.
Again, the primary reason for fixing this is to use proper delay strategy,
and in particular to fix crashes that can result from using port 80 writes
on machines that have resources on port 80, such as the ENE chips used by Quanta
in latops it designs and sells to, e.g. HP.
Signed-off-by: David P. Reed <dpreed@reed.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Change size to unsigned long, becase caller and user all used unsigned long.
Also make bad_addr take an alignment parameter.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
These new controls toggle experimental support for a new CPU feature,
the straightforward extension of largepages from the pmd level to the
pud level, which allows 1GB (kernel) TLBs instead of 2MB TLBs.
Turn it off by default, as this code has not been tested well enough yet.
Use the CONFIG_DIRECT_GBPAGES=y .config option or gbpages on the
boot line can be used to enable it. If enabled in the .config then
nogbpages boot option disables it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
people sometimes do crazy stuff like building really large static
arrays into their kernels or building allyesconfig kernels. Give
more space to the kernel and push modules up a bit: kernel has
512 MB and modules have 1.5 GB.
Should be enough for a few years ;-)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
From: Juergen Beisert <j.beisert@pengutronix.de>
This patch separates the current code into i.MX2 and i.MX3 and modifies
the Kconfig files to reflect this separation in the menus.
Things happend since last review:
- make i.MX3 compile again
- fix some structure names to be conform with all the shared/common
sources from i.MX1/i.MX2
Previous changes:
- stay conform to other Kconfig files (note from Russell King)
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Simple gpio-connected LED driver for KS8695 platforms.
(Based on old AT91 LED driver)
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Move documentation from semaphore.h to semaphore.c as requested by
Andrew Morton. Also reformat to kernel-doc style and add some more
notes about the implementation.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
By removing the negative values of 'count' and relying on the wait_list to
indicate whether we have any waiters, we can simplify the implementation
by removing the protection against an unlikely race condition. Thanks to
David Howells for his suggestions.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
ACPI currently emulates a timeout for semaphores with calls to
down_trylock and sleep. This produces horrible behaviour in terms of
fairness and excessive wakeups. Now that we have a unified semaphore
implementation, adding a real down_trylock is almost trivial.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility. Thanks to Peter Zijlstra for fixing the lockdep
warning. Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
quota.h currently relies on asm/semaphore.h (through some chain; it
doesn't actually include semaphore.h itself) to include wait.h. As
well as being bad practice to rely on an implicit include, subsequent
patches will break this. While I'm in this file, add atomic.h and
list.h, and sort the list of includes.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
include/linux/ext4_fs_i.h is included in include/linux/ext_fs.h twice
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
I checked ext4_ioctl and it looked largely safe to not be used
without BKL. So convert it over to unlocked_ioctl.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Fail migrate if we allocated new blocks via mmap write.
If we write to holes in the file via mmap, we end up allocating
new blocks. This block allocation happens without taking inode->i_mutex.
Since migrate is protected by i_mutex and migrate expects that no
new blocks get allocated during migrate, fail migrate if new blocks
get allocated.
We can't take inode->i_mutex in the mmap write path because that
would result in a locking order violation between i_mutex and mmap_sem.
Also adding a separate rw_sempahore for protection is really high overhead
for a rare operation such as migrate.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] linux/libata.h: reorganize ata_device struct members a bit
ahci: SB600 ahci can't do MSI, blacklist that capability
libata: More TSSTcorp pain, keep in sync with legacy IDE
pata_via: Fix 6410 misdetect
[libata] pata_atiixp: fix PIO timing data misprogramming
Legacy HP ia64 platforms currently cannot provide
/proc/cpuinfo/physical_id due to legacy SAL/PAL implementations.
However, that physical topology information can be obtained
via ACPI.
Provide an interface that gives ACPI one last chance to provide
physical_id for these legacy platforms. This logic only comes
into play iff:
- ACPI actually provides slot information for the CPU
- we lack a valid socket_id
Otherwise, we don't do anything.
Since x86 uses the ACPI processor driver as well, we provide a nop
stub function for arch_fix_phys_package_id() in asm-x86/topology.h
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (28 commits)
V4L-DVB(7789a): cx18: fix symbol conflict with ivtv driver
V4L/DVB (7789): tuner: remove static dependencies on analog tuner sub-modules
V4L/DVB (7785): [2.6 patch] make mt9{m001,v022}_controls[] static
V4L/DVB (7786): cx18: new driver for the Conexant CX23418 MPEG encoder chip
V4L/DVB (7783): drivers/media/dvb/frontends/s5h1420.c: printk fix
V4L/DVB (7782): pvrusb2: Driver is no longer experimental
V4L/DVB (7781): pvrusb2-dvb: include dvb support by default and update Kconfig help text
V4L/DVB (7780): pvrusb2: always enable support for OnAir Creator / HDTV USB2
V4L/DVB (7779): pvrusb2-dvb: quiet down noise in kernel log for feed debug
Rename common tuner Kconfig names to use the same
Fix V4L/DVB core help messages
V4L/DVB (7769): Move other terrestrial tuners to common/tuners
V4L/DVB (7768): reorganize some DVB-S Kconfig items
V4L/DVB(7767): Move tuners to common/tuners
V4L/DVB (7766): saa7134: add another PCI ID for Beholder M6
V4L/DVB (7765): Add support for Beholder BeholdTV H6
V4L/DVB (7763): ivtv: add tuner support for the AverMedia M116
V4L/DVB (7762): ivtv: fix tuner detection for PAL-N/Nc
V4L/DVB (7761): ivtv: increase the DMA timeout from 100 to 300 ms
V4L/DVB (7759): ivtv: increase version number to 1.2.1
...
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
i2c: Convert most new-style drivers to use module aliasing
i2c: Add support for device alias names
i2c-amd756-s4882: Fix an error path
i2c: Drop unused RTC driver IDs
i2c/tps65010: Add missing intialization of client data
i2c-sis5595: Minor cleanups in sis5595_access
i2c-piix4: Minor cleanups
i2c: Spelling fix (successful)
i2c-stub: No newline in parameter description
Put the big stuff at the end, to prepare for upcoming changes (and
also hopefully achieve nicer packing of remaining members).
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Many thanks to Steve Toth from Hauppauge and Nattu Dakshinamurthy from
Conexant for their support. I am in particular thankful to Hauppauge
since without their help this driver would not exist. It should also
be noted that Steve did the work to get the DVB part up and running.
Thank you!
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: G. Andrew Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Based on earlier work by Jon Smirl and Jochen Friedrich.
Update most new-style i2c drivers to use standard module aliasing
instead of the old driver_name/type driver matching scheme. I've
left the video drivers apart (except for SoC camera drivers) as
they're a bit more diffcult to deal with, they'll have their own
patch later.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Jochen Friedrich <jochen@scram.de>
Based on earlier work by Jon Smirl and Jochen Friedrich.
This patch allows new-style i2c chip drivers to have alias names using
the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this
point, the old i2c driver binding scheme (driver_name/type) is still
supported.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jochen Friedrich <jochen@scram.de>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
The x1208, pcf8563 and isl1208 RTC drivers have been converted to
new-style i2c drivers, so they no longer use I2C driver IDs.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/nes: Formatting cleanup
RDMA/nes: Add support for SFP+ PHY
RDMA/nes: Use LRO
IPoIB: Copy child MTU from parent
IB/mthca: Avoid changing userspace ABI to handle DMA write barrier attribute
IB/mthca: Avoid recycling old FMR R_Keys too soon
mlx4_core: Avoid recycling old FMR R_Keys too soon
IB/ehca: Allocate event queue size depending on max number of CQs and QPs
IPoIB: Use separate CQ for UD send completions
IB/iser: Count FMR alignment violations per session
IB/iser: Move high-volume debug output to higher debug level
IB/ehca: handle negative return value from ibmebus_request_irq() properly
RDMA/cxgb3: Support peer-2-peer connection setup
RDMA/cxgb3: Set the max_mr_size device attribute correctly
RDMA/cxgb3: Correctly serialize peer abort path
mlx4_core: Add a way to set the "collapsed" CQ flag
Enable the uncached allocator to allocate multiple pages of contiguous
uncached memory.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Count FMR alignment violations per session as part of the iscsi
statistics.
Signed-off-by: Eli Dorfman <elid@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Extend the mlx4_cq_resize() API with a way to set the "collapsed" flag
for the CQ being created.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cast the CAP_*_SET macros to be of kernel_cap_t type to avoid compiler
warnings.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch implements a set of Feroceon-specific
{copy,clear}_user_page() routines that perform more optimally than
the generic implementations. This also deals with write-allocate
caches (Feroceon can run L1 D in WA mode) which otherwise prevents
Linux from booting.
[nico: optimized the code even further]
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Tested-by: Sylver Bruneau <sylver.bruneau@googlemail.com>
Tested-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
The ioremap() optimization used for internal register didn't cope
with the fact that paddr + size can wrap to zero if the area extends
to the end of the physical address space.
Issue isolated by Sylver Bruneau <sylver.bruneau@googlemail.com>.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
The kernel should clean stale bits from reset status, so that
they won't confuse the bootloader.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The patch kills the use of IRQ_GPIO() and adds
#if NR_IRQS < (IT8152_LAST_IRQ+1) statement.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Alternate function and direction setting is now handled
by the MFP config code or the generic GPIO API.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The WM97xx touch screen controllers can be used to generate a wakeup
event when the system is suspended. Provide a new core API call
wm97xx_set_suspend_mode() allowing machine drivers to enable this. If no
suspend_mode is provided then the touch panel will be powered down when
the system is suspended.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
