- 10 Aug, 2010 40 commits
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Joe Perches authored
Signed-off-by:
Joe Perches <joe@perches.com> Cc: Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Joe Perches authored
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Joe Perches authored
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Joe Perches authored
Commit f80a3f62 ("Staging: strip: delete the driver") removed it. Signed-off-by:
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Joe Perches authored
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Joe Perches authored
Commit d6e976c0 ("UIO: Remove SMX Cryptengine driver") removed the file. Signed-off-by:
Ben Nizette <bn@niasdigital.com> Acked-by:
Hans J. Koch <hjk@linutronix.de> Signed-off-by:
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Joe Perches authored
Entered as 822 (10 key typo?). Signed-off-by:
Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by:
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Joe Perches authored
Commit 21b4aaa1 ("l2tp: Relocate pppol2tp driver to new net/l2tp directory") moved the file. Signed-off-by:
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Joe Perches authored
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Joe Perches authored
Use correct file location. Signed-off-by:
Marek Vasut <marek.vasut@gmail.com> Signed-off-by:
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Joe Perches authored
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Joe Perches authored
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Wan ZongShun <mcuos.com@gmail.com> Signed-off-by:
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Joe Perches authored
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Andi Kleen authored
kmsg_dump takes care to sample the global variables inside a spinlock, but then goes on to use the same variables outside the spinlock region too. Use the correct variable. This will make the race window smaller. Found by gcc 4.6's new warnings. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
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Akinobu Mita authored
The previous change added WARN_ON() in misc_deregister(). So it is not necessary to WARN_ON() misc_deregister() failure by callers. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Akinobu Mita authored
misc_deregister() returns an error only when it attempts to unregister the device that is not registered. This is the driver's bug. Most of the drivers don't check the return value of misc_deregister(). (It is not bad thing because most of kernel *_unregister() API always succeed and do not return value) So it is better to indicate the error by WARN_ON() in misc_deregister(). Signed-off-by:
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Richard Kennedy authored
Reorder elements in structure cpu_stopper to remove alignment padding on 64 bit builds, this shrinks its size from 40 to 32 bytes saving 8 bytes per cpu. Signed-off-by:
Richard Kennedy <richard@rsk.demon.co.uk> Acked-by:
Tejun Heo <tj@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Suresh Siddha authored
Workqueues are now initialized as part of the early_initcall(). So they are available for use during cold boot process aswell. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tejun Heo <tj@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by:
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Kevin Winchester authored
Andrew Morton suggested that the do_one_initcall and do_one_initcall_debug functions can be marked __init_or_module such that they can be discarded for the CONFIG_MODULES=N case. Signed-off-by:
Kevin Winchester <kjwinchester@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Kevin Winchester authored
Using: gcc (GCC) 4.5.0 20100610 (prerelease) The following warning appears: init/main.c: In function `do_one_initcall': init/main.c:730:10: warning: `calltime.tv64' may be used uninitialized in this function This warning is actually correct, as the global initcall_debug could arguably be changed by the initcall. Correct this warning by extracting a new function, do_one_initcall_debug, that performs the initcall for the debug case. Signed-off-by:
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Geert Uytterhoeven authored
Remove duplicate definition of ARRAY_SIZE(), which was never used anyway. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by:
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Oleg Nesterov authored
Cleanup, no functional changes. - __set_personality() always changes ->exec_domain/personality, the special case when ->exec_domain remains the same buys nothing but complicates the code. Unify both cases to simplify the code. - The -EINVAL check in sys_personality() was never right. If we assume that set_personality() can fail we should check the value it returns instead of verifying that task->personality was actually changed. Remove it. Before the previous patch it was possible to hit this case due to overflow problems, but this -EINVAL just indicated the kernel bug. OTOH, probably it makes sense to change lookup_exec_domain() to return ERR_PTR() instead of default_exec_domain if the search in exec_domains list fails, and report this error to the user-space. But this means another user-space change, and we have in-kernel users which need fixes. For example, PER_OSF4 falls into PER_MASK for unkown reason and nobody cares to register this domain. Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Cc: Wenming Zhang <wezhang@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by:
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Christoph Mair authored
This driver adds support for the BMP085 digital pressure sensor from Bosch Sensortec. It exposes a sysfs api to userspace where pressure and temperature measurement results can be read from the pressure0_input and temp0_input file. The chip is able to calculate the average of up to eight samples to increase the accuracy. This feature can be controlled by writing to the oversampling file. The BMP085 digital pressure sensor can measure ambient air pressure and temperature. Both values can be obtained from sysfs files. The pressure is measured by reading from pressure0_input. Valid values range from 30000 to 110000 pascal with a resolution of 1 pascal (=0.01 millibar). temp0_input holds the current temperature in degree celsius, multiplied by 10. This results in a resolution of a tenth degree celsius. Values range from -400 to 850. To increase the accuracy, this chip can calculate the average of 1, 2, 4 or 8 samples. This behavior is controlled through the oversampling sysfs file. Two to the power of the value written to that file specifies how many samples will be used. Valid values: 0..3. [akpm@linux-foundation.org: fix typo] [shubhrajyoti@ti.com: optimize the wait time for the pressure sensor, definition of long is arch dependent so make it u32] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Christoph Mair <christoph.mair@gmail.com> Signed-off-by:
Shubhrajyoti D <shubhrajyoti@ti.com> Acked-by:
Jonathan Cameron <jic23@cam.ac.uk> Cc: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by:
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Prarit Bhargava authored
Fix i386 PAE compile warning: drivers/misc/hpilo.c: In function `ilo_ccb_setup': drivers/misc/hpilo.c:274: warning: cast to pointer from integer of different size dma_addr_t is 64 on i386 PAE which causes a size mismatch. Signed-off-by:
Prarit Bhargava <prarit@redhat.com> Acked-by:
David Altobelli <david.altobelli@hp.com> Signed-off-by:
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Hemanth V authored
Add support for ROHM BH1780GLI Ambient light sensor. BH1780 supports I2C interface. Driver supports read/update of power state and read of lux value (through SYSFS). Writing value 3 to power_state enables the sensor and current lux value could be read. Currently this driver follows the same sysfs convention as supported by drivers/misc/isl29003.c. Signed-off-by:
Hemanth V <hemanthv@ti.com> Reviewed-by:
Daniel Mack <daniel@caiaq.de> Acked-by:
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Alexey Fomenko authored
sec2annotation returns malloc'ed buffer directly to printf as an argument. Free this buffer after printing. Signed-off-by:
Alexey Fomenko <ext-alexey.fomenko@nokia.com> Cc: Trevor Keith <tsrk@tsrk.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by:
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Anton Blanchard authored
A profile of a network benchmark showed iommu_num_pages rather high up: 0.52% iommu_num_pages Looking at the profile, an integer divide is taking almost all of the time: % : c000000000376ea4 <.iommu_num_pages>: 1.93 : c000000000376ea4: fb e1 ff f8 std r31,-8(r1) 0.00 : c000000000376ea8: f8 21 ff c1 stdu r1,-64(r1) 0.00 : c000000000376eac: 7c 3f 0b 78 mr r31,r1 3.86 : c000000000376eb0: 38 84 ff ff addi r4,r4,-1 0.00 : c000000000376eb4: 38 05 ff ff addi r0,r5,-1 0.00 : c000000000376eb8: 7c 84 2a 14 add r4,r4,r5 46.95 : c000000000376ebc: 7c 00 18 38 and r0,r0,r3 45.66 : c000000000376ec0: 7c 84 02 14 add r4,r4,r0 0.00 : c000000000376ec4: 7c 64 2b 92 divdu r3,r4,r5 0.00 : c000000000376ec8: 38 3f 00 40 addi r1,r31,64 0.00 : c000000000376ecc: eb e1 ff f8 ld r31,-8(r1) 1.61 : c000000000376ed0: 4e 80 00 20 blr Since every caller of iommu_num_pages passes in a constant power of two we can inline this such that the divide is replaced by a shift. The entire function is only a few instructions once optimised, so it is a good candidate for inlining overall. Signed-off-by:Anton Blanchard <anton@samba.org> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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Kevin Winchester authored
Using: gcc (GCC) 4.5.0 20100610 (prerelease) The following warnings appear: fs/readdir.c: In function `filldir64': fs/readdir.c:240:15: warning: `dirent' is used uninitialized in this function fs/readdir.c: In function `filldir': fs/readdir.c:155:15: warning: `dirent' is used uninitialized in this function fs/compat.c: In function `compat_filldir64': fs/compat.c:1071:11: warning: `dirent' is used uninitialized in this function fs/compat.c: In function `compat_filldir': fs/compat.c:984:15: warning: `dirent' is used uninitialized in this function The warnings are related to the use of the NAME_OFFSET() macro. Luckily, it appears as though the standard offsetof() macro is what is being implemented by NAME_OFFSET(), thus we can fix the warning and use a more standard code construct at the same time. Signed-off-by:
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Randy Dunlap authored
Add more information about patch descriptions. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Reviewed-by:
Christoph Lameter <cl@linux-foundation.org> Signed-off-by:
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Joe Perches authored
There are no more uses of NIPQUAD or NIPQUAD_FMT. Remove the definitions. Signed-off-by:
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Geert Uytterhoeven authored
Removal of these started in 2.3.43pre3, ca. 10 years ago. Reported-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Rusty Russell authored
We should use the __same_type() helper in __must_be_array(). Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Reported-by:
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Mike Frysinger authored
The asm-generic/iomap.h provides these functions already, but the non-generic fallback defines do not. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Christoph Egger authored
PROC_MM doesn't exist in Kconfig. Looking around it looks like a left-over from 2.6.0 or even 2.4 times, last mentioned in a fedora patch for 2.6.10. I believe it's time to get rid of that last tiny parts here that are still around. Signed-off-by:
Christoph Egger <siccegge@cs.fau.de> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Richard Weinberger authored
When I use OpenSUSE-11.2 on UML (> 2.6.25) I get lots of such errors: Registering fd 1 twice Irqs : 3, 3 Ids : 0x09cb41a0, 0x09cb4120 ------------[ cut here ]------------ WARNING: at kernel/irq/manage.c:896 __free_irq+0x79/0x11a() Trying to free already-free IRQ 3 Modules linked in: 09dadc6c: [<081b2edb>] dump_stack+0x1c/0x20 09dadc84: [<080716da>] warn_slowpath_common+0x49/0x77 09dadc9c: [<08071772>] warn_slowpath_fmt+0x26/0x2a 09dadcb4: [<08094e08>] __free_irq+0x79/0x11a 09dadce4: [<08094ed6>] free_irq+0x2d/0x49 09dadcf4: [<0805b4bc>] close_one_chan+0x70/0x9c 09dadd0c: [<0805b833>] close_chan+0x17/0x22 09dadd1c: [<0805bdda>] enable_chan+0x70/0x7c 09dadd3c: [<0805cbb7>] line_open+0x34/0x9f 09dadd54: [<0805b21e>] con_open+0x13/0x35 09dadd6c: [<0814dc89>] tty_open+0x285/0x384 09dadda0: [<080b754e>] chrdev_open+0xe0/0xf9 09daddc0: [<080b3fb2>] __dentry_open+0xf3/0x1e2 09dadde4: [<080b4142>] nameidata_to_filp+0x35/0x49 09daddfc: [<080bd270>] do_last+0x409/0x50e 09dade28: [<080bea04>] do_filp_open+0x175/0x446 09dadecc: [<080b3d89>] do_sys_open+0x4a/0x128 09dadf04: [<080b3ea2>] sys_open+0x19/0x21 09dadf28: [<0805ab5a>] handle_syscall+0x7a/0x98 09dadf78: [<08068441>] userspace+0x2c9/0x370 09dadfe0: [<08058bb3>] fork_handler+0x53/0x5b 09dadffc: [<00766564>] 0x766564 ---[ end trace 9ebc1094aaf4bded ]--- This patch fixes the issue. Signed-off-by:
Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Ai Li authored
On some SoC chips, HW resources may be in use during any particular idle period. As a consequence, the cpuidle states that the SoC is safe to enter can change from idle period to idle period. In addition, the latency and threshold of each cpuidle state can vary, depending on the operating condition when the CPU becomes idle, e.g. the current cpu frequency, the current state of the HW blocks, etc. cpuidle core and the menu governor, in the current form, are geared towards cpuidle states that are static, i.e. the availabiltiy of the states, their latencies, their thresholds are non-changing during run time. cpuidle does not provide any hook that cpuidle drivers can use to adjust those values on the fly for the current idle period before the menu governor selects the target cpuidle state. This patch extends cpuidle core and the menu governor to handle states that are dynamic. There are three additions in the patch and the patch maintains backwards-compatibility with existing cpuidle drivers. 1) add prepare() to struct cpuidle_device. A cpuidle driver can hook into the callback and cpuidle will call prepare() before calling the governor's select function. The callback gives the cpuidle driver a chance to update the dynamic information of the cpuidle states for the current idle period, e.g. state availability, latencies, thresholds, power values, etc. 2) add CPUIDLE_FLAG_IGNORE as one of the state flags. In the prepare() function, a cpuidle driver can set/clear the flag to indicate to the menu governor whether a cpuidle state should be ignored, i.e. not available, during the current idle period. 3) add power_specified bit to struct cpuidle_device. The menu governor currently assumes that the cpuidle states are arranged in the order of increasing latency, threshold, and power savings. This is true or can be made true for static states. Once the state parameters are dynamic, the latencies, thresholds, and power savings for the cpuidle states can increase or decrease by different amounts from idle period to idle period. So the assumption of increasing latency, threshold, and power savings from Cn to C(n+1) can no longer be guaranteed. It can be straightforward to calculate the power consumption of each available state and to specify it in power_usage for the idle period. Using the power_usage fields, the menu governor then selects the state that has the lowest power consumption and that still satisfies all other critieria. The power_specified bit defaults to 0. For existing cpuidle drivers, cpuidle detects that power_specified is 0 and fills in a dummy set of power_usage values. Signed-off-by:
Ai Li <aili@codeaurora.org> Cc: Len Brown <len.brown@intel.com> Acked-by:
Arjan van de Ven <arjan@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Venkatesh Pallipadi <venki@google.com> Signed-off-by:
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KAMEZAWA Hiroyuki authored
When taking a memory snapshot in hibernate_snapshot(), all (directly called) memory allocations use GFP_ATOMIC. Hence swap misusage during hibernation never occurs. But from a pessimistic point of view, there is no guarantee that no page allcation has __GFP_WAIT. It is better to have a global indication "we enter hibernation, don't use swap!". This patch tries to freeze new-swap-allocation during hibernation. (All user processes are frozenm so swapin is not a concern). This way, no updates will happen to swap_map[] between hibernate_snapshot() and save_image(). Swap is thawed when swsusp_free() is called. We can be assured that swap corruption will not occur. Signed-off-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Hugh Dickins <hughd@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Ondrej Zary <linux@rainbow-software.org> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by:
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KAMEZAWA Hiroyuki authored
Since 2.6.31, swap_map[]'s refcounting was changed to show that a used swap entry is just for swap-cache, can be reused. Then, while scanning free entry in swap_map[], a swap entry may be able to be reclaimed and reused. It was caused by commit c9e44410 ("mm: reuse unused swap entry if necessary"). But this caused deta corruption at resume. The scenario is - Assume a clean-swap cache, but mapped. - at hibernation_snapshot[], clean-swap-cache is saved as clean-swap-cache and swap_map[] is marked as SWAP_HAS_CACHE. - then, save_image() is called. And reuse SWAP_HAS_CACHE entry to save image, and break the contents. After resume: - the memory reclaim runs and finds clean-not-referenced-swap-cache and discards it because it's marked as clean. But here, the contents on disk and swap-cache is inconsistent. Hance memory is corrupted. This patch avoids the bug by not reclaiming swap-entry during hibernation. This is a quick fix for backporting. Signed-off-by:
Ondreg Zary <linux@rainbow-software.org> Tested-by:
Andrea Gelmini <andrea.gelmini@gmail.com> Acked-by:
Hugh Dickins <hughd@google.com> Cc: <stable@kernel.org> Signed-off-by:
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Michael Cree authored
This implements hardware performance events for the EV67 and later CPUs within the Linux performance events subsystem. Only using the performance monitoring unit in HP/Compaq's so called "Aggregrate mode" is supported. The code has been implemented in a manner that makes extension to other older Alpha CPUs relatively straightforward should some mug wish to indulge themselves. Signed-off-by:
Michael Cree <mcree@orcon.net.nz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jay Estabrook <jay.estabrook@hp.com> Signed-off-by:
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Michael Cree authored
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