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The scheduler hrtimer bits in 2.6.25 introduced a circular lock
dependency in a rare code path:
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[ INFO: possible circular locking dependency detected ]
2.6.25-sched-devel.git-x86-latest.git #19
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X/2980 is trying to acquire lock:
(&rq->rq_lock_key#2){++..}, at: [<ffffffff80230146>] task_rq_lock+0x56/0xa0
but task is already holding lock:
(&cpu_base->lock){++..}, at: [<ffffffff80257ae1>] lock_hrtimer_base+0x31/0x60
which lock already depends on the new lock.
The scenario which leads to this is:
posix-timer signal is delivered
-> posix-timer is rearmed
timer is already expired in hrtimer_enqueue()
-> softirq is raised
To prevent this we need to move the raise of the softirq out of the
base->lock protected code path.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
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back.
We checked the hardware freq with OS cached freq value in get_cur_freqon_cpu().
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
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Change cpufreq tables from arrays to per_cpu variables in
drivers/acpi/processor_thermal.c
Based on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
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Fix show_trans_table when it overflows PAGE_SIZE.
* Not all snprintf calls were protected against being passed a negative
length.
* When show_trans_table overflows, len might be > PAGE_SIZE. In that case,
returns PAGE_SIZE.
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
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If cpufreq_register_notifier is called before pure initcalls,
init_cpufreq_transition_notifier_list will overwrite whatever it did,
causing notifiers to be ignored.
Print some noise to the kernel log if that happens.
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
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Simplify this by moving the unlocking out of the error
paths into the exit path.
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
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void * p -> void *p
no space between function parameters
removed excess whitespace
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
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return is not a function.
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (45 commits)
[MIPS] Pb1200/DBAu1200: move platform code to its proper place
[MIPS] Fix handling of trap and breakpoint instructions
[MIPS] Pb1200: do register SMC 91C111
[MIPS] DBAu1200: fix bad SMC 91C111 resource size
[NET] Kconfig: Rename MIKROTIK_RB500 -> MIKROTIK_RB532
[MIPS] IP27: Fix build bug due to missing include
[MIPS] Fix some sparse warnings on traps.c and irq-msc01.c
[MIPS] cevt-gt641xx: Kill unnecessary include
[MIPS] DS1287: Add clockevent driver
[MIPS] add DECstation I/O ASIC clocksource
[MIPS] rbtx4938: minor cleanup
[MIPS] Alchemy: kill unused PCI_IRQ_TABLE_LOOKUP macro
[MIPS] rbtx4938: misc cleanups
[MIPS] jmr3927: use generic txx9 gpio
[MIPS] rbhma4500: use generic txx9 gpio
[MIPS] generic txx9 gpio support
[MIPS] make fallback gpio.h gpiolib-friendly
[MIPS] unexport null_perf_irq() and make it static
[MIPS] unexport rtc_mips_set_time()
[MIPS] unexport copy_from_user_page()
...
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This bug was introduced in the 2.6.24 i386/x86_64 tree merge, where
MSI-X vector allocation will eventually fail. The cause is the new
bit array tracking used vectors is not getting cleared properly on
IRQ destruction on the 32-bit APIC code.
This can be seen easily using the ixgbe 10 GbE driver on multi-core
systems by simply loading and unloading the driver a few times.
Depending on the number of available vectors on the host system, the
MSI-X allocation will eventually fail, and the driver will only be
able to use legacy interrupts.
I am generating the same patch for both stable trees for 2.6.24 and
2.6.25.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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bitops source file was renamed, so fix docbook for that.
docproc: linux-2.6.25-git11/include/asm-x86/bitops_32.h: No such file or directory
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
SELinux: Fix a RCU free problem with the netport cache
SELinux: Made netnode cache adds faster
SELinux: include/security.h whitespace, syntax, and other cleanups
SELinux: policydb.h whitespace, syntax, and other cleanups
SELinux: mls_types.h whitespace, syntax, and other cleanups
SELinux: mls.h whitespace, syntax, and other cleanups
SELinux: hashtab.h whitespace, syntax, and other cleanups
SELinux: context.h whitespace, syntax, and other cleanups
SELinux: ss/conditional.h whitespace, syntax, and other cleanups
SELinux: selinux/include/security.h whitespace, syntax, and other cleanups
SELinux: objsec.h whitespace, syntax, and other cleanups
SELinux: netlabel.h whitespace, syntax, and other cleanups
SELinux: avc_ss.h whitespace, syntax, and other cleanups
Fixed up conflict in include/linux/security.h manually
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* endianness annotations
* endianness fixes
* missing get_unaligned/put_unaligned
It's pretty much all over the place, changes to different files are independent.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Serial-parts-Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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usb_control_msg() converts arguments to little-endian itself,
doing that in caller means breakage on big-endian boxen.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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again, fallout from ide merge
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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it's ata_link, not ata_linke
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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psr is not a good name for local variable in macro body when it
has a good chance of being the argument of said macro (actually
is at least in one place)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* EXTRA_CFLAGS do not apply for *.S
* don't bother with symlinks to ../lib/mem*.S, just add ../lib/mem*.o
to object list
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: video drivers: add facility level
sparc: tcx.c make tcx_init and tcx_exit static
sparc: ffb.c make ffb_init and ffb_exit static
sparc: cg14.c make cg14_init and cg15_exit static
sparc: bw2.c fix bw2_exit
sparc64: Fix accidental syscall restart on child return from clone/fork/vfork.
sparc64: Clean up handling of pt_regs trap type encoding.
sparc: Remove old style signal frame support.
sparc64: Kill bogus RT_ALIGNEDSZ macro from signal.c
sparc: sunzilog.c remove unused argument
sparc: fix drivers/video/tcx.c warning
sparc64: Kill unused local ISA bus layer.
input: Rewrite sparcspkr device probing.
sparc64: Do not ignore 'pmu' device ranges.
sparc64: Kill ISA_FLOPPY_WORKS code.
sparc64: Kill CONFIG_SPARC32_COMPAT
sparc64: Cleanups and corrections for arch/sparc64/Kconfig
sparc64: Fix wedged irq regression.
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
iwlwifi: Allow building iwl3945 without iwl4965.
wireless: Fix compile error with wifi & leds
tcp: Fix slab corruption with ipv6 and tcp6fuzz
ipv4/ipv6 compat: Fix SSM applications on 64bit kernels.
[IPSEC]: Use digest_null directly for auth
sunrpc: fix missing kernel-doc
can: Fix copy_from_user() results interpretation
Revert "ipv6: Fix typo in net/ipv6/Kconfig"
tipc: endianness annotations
ipv6: result of csum_fold() is already 16bit, no need to cast
[XFRM] AUDIT: Fix flowlabel text format ambibuity.
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this option has been the default on a wide range of distributions
for a long time - time to make it non-experimental.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:
hrtimer: timeout too long when using HRTIMER_CB_SOFTIRQ
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Since both the IDE interface and SMC 91C111 Ethernet chip are on-board
devices, not SOC devices, move the platform device registration form the
common to the board specific code.
While at it, remove semicolon (which didn't break compilation only by
chance) from the AU1XXX_ATA_DDMA_REQ macro and do some renaming:
- change 'au1200_ide0_' variable name prefix to the mere 'ide_';
- change 'smc91x_' variable name prefix to 'smc91c111_' since that's the
name of the chip used on the boards;
- drop 'AU1XXX_' prefix from the names of macros describing IDE and Ethernet
on-board devices;
- change 'SMC91111_' to 'SMC91C111_', change 'IRQ' to 'INT' in the names of
the macros describing the Ethernet chip for consistency with the IDE
macros;
- change 'ATA_' to 'IDE_' and 'OFFSET' to 'SHIFT' (since this value is
indeed a shift count) in the names of the macros describing the IDE
interface.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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With fixes and cleanups from Atsushi Nemoto (anemo@mba.ocn.ne.jp).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Pb1200 does have SMC 91C111 Ethernet chip on board but the platform code
did not register it, so one couldn't mount NFS...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The on-board SMC 91C111 chip only decodes 16 bytes of memory (obviously, it
can not decode a whole megabyte starting from address 0x19000300).
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The platform is actually named routerboard 532 so let's call it this.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
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asm-mips/mach-ip27/topology.h must #include <asm-generic/topology.h>
This fixes the following compile error:
...
CC kernel/sched.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c: In function 'find_next_best_node':
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7015: error: implicit declaration of function 'node_to_cpumask_ptr'
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7015: error: '__tmp__' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7015: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7015: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c: In function 'sched_domain_node_span':
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7047: error: 'nodemask' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7048: warning: ISO C90 forbids mixed declarations and code
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7059: error: implicit declaration of function 'node_to_cpumask_ptr_next'
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c: In function '__build_sched_domains':
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/sched.c:7605: error: 'pnodemask' undeclared (first use in this function)
make[2]: *** [kernel/sched.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* Declare board_bind_eic_interrupt, board_watchpoint_handler in traps.h
* Make msc_bind_eic_interrupt static and fix its argument types.
* Make msc_levelirq_type, msc_edgeirq_type static.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add DECstation I/O ASIC clocksource
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Do not initialize res->parent for platform device.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* Do not use non-standard I/O accessors, such as reg_rd08, etc.
* Kill unnecessary wbflush()
* Kill tx4938_mips.h
* Kill unnecessary includes
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Use generic txx9 gpio (and gpiolib) for JMR3927 board.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Use generic txx9 gpio (and gpiolib) for RBHMA4500 board.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This is a board-independent TXx9 gpio API implementation using gpiolib.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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If gpiolib was selected, asm-generic/gpio.h provides some prototypes
for gpio API and implementation helpers. With this patch, platform
code can implement its GPIO API using gpiolib without custom gpio.h
file.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch unexports the null_perf_irq() symbol, and simultaneously
makes this function static.
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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No users for the rtc_mips_set_time() routine exist outside of the
core kernel code. Therefore, EXPORT_SYMBOL(rtc_mips_set_time) is
useless, and this patch removes it.
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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No users for the copy_from_user_page() routine exist outside of the
core kernel code. Therefore, EXPORT_SYMBOL(copy_from_user_page) is
useless, and this patch removes it.
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The copy_to_user_page() function is called only in the core kernel
code. Therefore, there is no need to export it. This patch removes
EXPORT_SYMBOL(copy_to_user_page).
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The copy_user_highpage() routine has no users outside of the
core kernel code, so exporting this symbol is pointless.
This patch removes EXPORT_SYMBOL(copy_user_highpage).
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Move the code registering the Alchemy UART platform devices from
drivers/serial/ to its proper place, into the Alchemy platform code. Fix
the related Kconfig entry, while at it...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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