- 15 1月, 2006 2 次提交
-
-
由 Robin Holt 提交于
Anything that writes into a tmpfs filesystem is liable to disproportionately decrease the available memory on a particular node. Since there's no telling what sort of application (e.g. dd/cp/cat) might be dropping large files there, this lets the admin choose the appropriate default behavior for their site's situation. Introduce a tmpfs mount option which allows specifying a memory policy and a second option to specify the nodelist for that policy. With the default policy, tmpfs will behave as it does today. This patch adds support for preferred, bind, and interleave policies. The default policy will cause pages to be added to tmpfs files on the node which is doing the writing. Some jobs expect a single process to create and manage the tmpfs files. This results in a node which has a significantly reduced number of free pages. With this patch, the administrator can specify the policy and nodes for that policy where they would prefer allocations. This patch was originally written by Brent Casavant and Hugh Dickins. I added support for the bind and preferred policies and the mpol_nodelist mount option. Signed-off-by: NBrent Casavant <bcasavan@sgi.com> Signed-off-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NRobin Holt <holt@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Xose Vazquez Perez 提交于
Based on comments from Randy Dunlap on my previous commit 5b0ed2c6Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
- 14 1月, 2006 5 次提交
-
-
由 David Brownell 提交于
This adds a bitbanging parport based adaptor cable for AVR Butterfly, giving SPI links to its DataFlash chip and (eventually) firmware running in the card. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 David Brownell 提交于
This collects some small SPI patches that seem to be missing from the MM tree: - spi_butterfly kbuild hooks got dropped somehow; this restores them - quick fix for a (theoretical?) m25p80_write() oops noted by Andrew - quick fix for a potential config-specific oops for mtd_dataflash() - minor doc tweaks Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 David Brownell 提交于
This includes various updates to the SPI core: - Fixes a driver model refcount bug in spi_unregister_master() paths. - The spi_master structures now have wrappers which help keep drivers from needing class-level get/put for device data or for refcounts. - Check for a few setup errors that would cause oopsing later. - Docs say more about memory management. Highlights the use of DMA-safe i/o buffers, and zero-initializing spi_message and such metadata. - Provide a simple alloc/free for spi_message and its spi_transfer; this is only one of the possible memory management policies. Nothing to break code that already works. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 David Brownell 提交于
This is a refresh of the "Simple SPI Framework" found in 2.6.15-rc3-mm1 which makes the following changes: * There's now a "struct spi_driver". This increase the footprint of the core a bit, since it now includes code to do what the driver core was previously handling directly. Documentation and comments were updated to match. * spi_alloc_master() now does class_device_initialize(), so it can at least be refcounted before spi_register_master(). To match, spi_register_master() switched over to class_device_add(). * States explicitly that after transfer errors, spi_devices will be deselected. We want fault recovery procedures to work the same for all controller drivers. * Minor tweaks: controller_data no longer points to readonly data; prevent some potential cast-from-null bugs with container_of calls; clarifies some existing kerneldoc, And a few small cleanups. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 David Brownell 提交于
This is the core of a small SPI framework, implementing the model of a queue of messages which complete asynchronously (with thin synchronous wrappers on top). - It's still less than 2KB of ".text" (ARM). If there's got to be a mid-layer for something so simple, that's the right size budget. :) - The guts use board-specific SPI device tables to build the driver model tree. (Hardware probing is rarely an option.) - This version of Kconfig includes no drivers. At this writing there are two known master controller drivers (PXA/SSP, OMAP MicroWire) and three protocol drivers (CS8415a, ADS7846, DataFlash) with LKML mentions of other drivers in development. - No userspace API. There are several implementations to compare. Implement them like any other driver, and bind them with sysfs. The changes from last version posted to LKML (on 11-Nov-2005) are minor, and include: - One bugfix (removes a FIXME), with the visible effect of making device names be "spiB.C" where B is the bus number and C is the chipselect. - The "caller provides DMA mappings" mechanism now has kerneldoc, for DMA drivers that want to be fancy. - Hey, the framework init can be subsys_init. Even though board init logic fires earlier, at arch_init ... since the framework init is for driver support, and the board init support uses static init. - Various additional spec/doc clarifications based on discussions with other folk. It adds a brief "thank you" at the end, for folk who've helped nudge this framework into existence. As I've said before, I think that "protocol tweaking" is the main support that this driver framework will need to evolve. From: Mark Underwood <basicmark@yahoo.com> Update the SPI framework to remove a potential priority inversion case by reverting to kmalloc if the pre-allocated DMA-safe buffer isn't available. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
- 13 1月, 2006 2 次提交
-
-
由 Mark Haverkamp 提交于
Received From Mark Salyzyn. Move the README from the driver directory to the Documentation directory. Updated the documentation, added descriptions for cards that were missing. Signed-off-by: NMark Haverkamp <markh@osdl.org> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
-
由 akpm@osdl.org 提交于
) From: Ingo Molnar <mingo@elte.hu> This is the latest version of the scheduler cache-hot-auto-tune patch. The first problem was that detection time scaled with O(N^2), which is unacceptable on larger SMP and NUMA systems. To solve this: - I've added a 'domain distance' function, which is used to cache measurement results. Each distance is only measured once. This means that e.g. on NUMA distances of 0, 1 and 2 might be measured, on HT distances 0 and 1, and on SMP distance 0 is measured. The code walks the domain tree to determine the distance, so it automatically follows whatever hierarchy an architecture sets up. This cuts down on the boot time significantly and removes the O(N^2) limit. The only assumption is that migration costs can be expressed as a function of domain distance - this covers the overwhelming majority of existing systems, and is a good guess even for more assymetric systems. [ People hacking systems that have assymetries that break this assumption (e.g. different CPU speeds) should experiment a bit with the cpu_distance() function. Adding a ->migration_distance factor to the domain structure would be one possible solution - but lets first see the problem systems, if they exist at all. Lets not overdesign. ] Another problem was that only a single cache-size was used for measuring the cost of migration, and most architectures didnt set that variable up. Furthermore, a single cache-size does not fit NUMA hierarchies with L3 caches and does not fit HT setups, where different CPUs will often have different 'effective cache sizes'. To solve this problem: - Instead of relying on a single cache-size provided by the platform and sticking to it, the code now auto-detects the 'effective migration cost' between two measured CPUs, via iterating through a wide range of cachesizes. The code searches for the maximum migration cost, which occurs when the working set of the test-workload falls just below the 'effective cache size'. I.e. real-life optimized search is done for the maximum migration cost, between two real CPUs. This, amongst other things, has the positive effect hat if e.g. two CPUs share a L2/L3 cache, a different (and accurate) migration cost will be found than between two CPUs on the same system that dont share any caches. (The reliable measurement of migration costs is tricky - see the source for details.) Furthermore i've added various boot-time options to override/tune migration behavior. Firstly, there's a blanket override for autodetection: migration_cost=1000,2000,3000 will override the depth 0/1/2 values with 1msec/2msec/3msec values. Secondly, there's a global factor that can be used to increase (or decrease) the autodetected values: migration_factor=120 will increase the autodetected values by 20%. This option is useful to tune things in a workload-dependent way - e.g. if a workload is cache-insensitive then CPU utilization can be maximized by specifying migration_factor=0. I've tested the autodetection code quite extensively on x86, on 3 P3/Xeon/2MB, and the autodetected values look pretty good: Dual Celeron (128K L2 cache): --------------------- migration cost matrix (max_cache_size: 131072, cpu: 467 MHz): --------------------- [00] [01] [00]: - 1.7(1) [01]: 1.7(1) - --------------------- cacheflush times [2]: 0.0 (0) 1.7 (1784008) --------------------- Here the slow memory subsystem dominates system performance, and even though caches are small, the migration cost is 1.7 msecs. Dual HT P4 (512K L2 cache): --------------------- migration cost matrix (max_cache_size: 524288, cpu: 2379 MHz): --------------------- [00] [01] [02] [03] [00]: - 0.4(1) 0.0(0) 0.4(1) [01]: 0.4(1) - 0.4(1) 0.0(0) [02]: 0.0(0) 0.4(1) - 0.4(1) [03]: 0.4(1) 0.0(0) 0.4(1) - --------------------- cacheflush times [2]: 0.0 (33900) 0.4 (448514) --------------------- Here it can be seen that there is no migration cost between two HT siblings (CPU#0/2 and CPU#1/3 are separate physical CPUs). A fast memory system makes inter-physical-CPU migration pretty cheap: 0.4 msecs. 8-way P3/Xeon [2MB L2 cache]: --------------------- migration cost matrix (max_cache_size: 2097152, cpu: 700 MHz): --------------------- [00] [01] [02] [03] [04] [05] [06] [07] [00]: - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [01]: 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [02]: 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [03]: 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) [04]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) [05]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) [06]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) [07]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - --------------------- cacheflush times [2]: 0.0 (0) 19.2 (19281756) --------------------- This one has huge caches and a relatively slow memory subsystem - so the migration cost is 19 msecs. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NKen Chen <kenneth.w.chen@intel.com> Cc: <wilder@us.ibm.com> Signed-off-by: NJohn Hawkes <hawkes@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
- 12 1月, 2006 7 次提交
-
-
由 Andi Kleen 提交于
Cc: len.brown@intel.com, ashok.ray@intel.com Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Andi Kleen 提交于
Most users don't need it so no need to waste memory. This means an user has to specify the appropiate number of hotplug CPUs on the command line with additional_cpus=... or fix their BIOS to follow the convention in Documentation/x86-64/cpu-hotplug-spec Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Tore Anderson 提交于
Undocument the non-working resize= mount option in ext3, and add some references to the ext2resize package instead, which appears to be the only proper way of doing online resizing of ext3 filesystems. Signed-off-by: NTore Anderson <tore@fud.no> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Akinobu Mita 提交于
Kdump has been merged and supported on several architectures. It is better to encourage to use kdump rather than non standard kernel crash dump patches. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Akinobu Mita 提交于
Add gdb macro which print the kernel ring buffer into kdump docs Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Michael Krufky 提交于
- Add PCI ID for UltraView DVB-T Plus,rebranded DViCO FusionHDTV DVB-T Plus Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Julian Calaby 提交于
V4L/DVB (3340): Add bttv card MagicTV (rebranded MachTV) - Add bttv card MagicTV (rebranded MachTV) Signed-off-by: NJulian Calaby <julian.calaby@gmail.com> Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
- 11 1月, 2006 12 次提交
-
-
由 Paul Jackson 提交于
Two little cpuset documentation fixes. Signed-off-by: NPaul Jackson <pj@sgi.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
-
由 Jesper Juhl 提交于
Here's a tiny patch making a few esthetic changes to Documentation/laptop-mode.txt To me this patch makes sense, but feel free to disagree, I don't feel strongly about it at all. It changes a single URL to its strictly correct form (directories should end in /), and it makes the arguments to main in an included example program follow convention and be named argc and argv. Signed-off-by: NJesper Juhl <juhl-lkml@dif.dk> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
-
由 Jesper Juhl 提交于
Small spelling, formating & similar fixes to stable_kernel_rules.txt Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Jesper Juhl 提交于
Remove obsolete patch from Documentation/locks.txt Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Jesper Juhl 提交于
Spelling fixes, formating changes and corrections for Documentation/filesystems/ext3.txt Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Randy Dunlap 提交于
Typos/corrections. A few extra additions on top of Randy's fixes. Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Martin Waitz 提交于
when ignoring all DocBook output files git-status output becomes meaningful again. Signed-off-by: NMartin Waitz <tali@admingilde.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Jesper Juhl 提交于
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Thomas Gleixner 提交于
add hrtimer docbook and design document Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Maneesh Soni 提交于
Update the kdump documentation to reflect the changes due to recent kernel config option changes for kexec and kdump. Signed-off-by: NManeesh Soni <maneesh@in.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Vivek Goyal 提交于
- elfcorehdr= specifies the location of elf core header stored by the crashed kernel. This command line option will be passed by the kexec-tools to capture kernel. Changes in this version : - Added more comments in kernel-parameters.txt and in code. Signed-off-by: NMurali M Chakravarthy <muralim@in.ibm.com> Signed-off-by: NVivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 akpm@osdl.org 提交于
) From: Vivek Goyal <vgoyal@in.ibm.com> - This patch introduces the memmap option for x86_64 similar to i386. - memmap=exactmap enables setting of an exact E820 memory map, as specified by the user. Changes in this version: - Used e820_end_of_ram() to find the max_pfn as suggested by Andi kleen. - removed PFN_UP & PFN_DOWN macros - Printing the user defined map also. Signed-off-by: NMurali M Chakravarthy <muralim@in.ibm.com> Signed-off-by: NHariprasad Nellitheertha <nharipra@gmail.com> Signed-off-by: NVivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
- 10 1月, 2006 12 次提交
-
-
由 Ingo Molnar 提交于
Add mutex design related documentation. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NArjan van de Ven <arjan@infradead.org>
-
由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
-
由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
-
由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
-
由 Alexey Dobriyan 提交于
Another reason to use: ret = foo(); if (ret < 0) goto out; Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Michael Krufky 提交于
- Get_dvb_firmware script updated accordingly: - my $url = "http://www.linuxtv.org/~mkrufky/dvb-usb-bluebird-01.fw"; + my $url = "http://www.linuxtv.org/download/dvb/firmware/dvb-usb-blue$Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
-
由 Chris Pascoe 提交于
- Support for DVB reception on the PCI half of the DViCO DVB-T Dual Digital. Signed-off-by: NChris Pascoe <c.pascoe@itee.uq.edu.au> Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
-
由 linas@austin.ibm.com 提交于
Various PCI bus errors can be signaled by newer PCI controllers. Recovering from those errors requires an infrastructure to notify affected device drivers of the error, and a way of walking through a reset sequence. This patch adds documentation describing the current error recovery proposal. Signed-off-by: NLinas Vepstas <linas@austin.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 Jesse Barnes 提交于
idr gently pointed out today that not only is the sysfs rom file interface somewhat unintuitive (despite my efforts and initial implementation), but it's also undocumented! This patch to Documentation/filesystems/sysfs-pci.txt corrects the latter problem; the former is a userland ABI now though, so we're stuck with it for awhile at least. Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
由 Knut Petersen 提交于
This is a major update to the cyblafb framebuffer driver. Most of the stuff has been tested in the mm tree. Main advantages: ============ - vxres > xres support - ywrap and xpan support - much faster for almost all modes (e.g. 1280x1024-16bpp draws more than 41 full screens of text instead of about 25 full screens of text per second on authors Epia 5000) - module init/exit code fixed - bugs triggered by console rotation fixed - lots of minor improvements - startup modes suitable for high performance scrolling in all directions This diff also contains a lot of white space fixes. No side effects are possible, only one single graphics core is affected. Signed-off-by: NKnut Petersen <Knut_Petersen@t-online.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
-
由 Peter Missel 提交于
- Add support for LifeView FlyDVB Trio. - all analog inputs are supported and working, including FM radio - TO DO: dvb & remote control Signed-off-by: NPeter Missel <peter.missel@onlinehome.de> Signed-off-by: NMichael Krufky <mkrufky@m1k.net> Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
-
由 Manenti Marco 提交于
- Add Kworld/Vstream Xpert DVB-T card with cx22702 tuner. Signed-off-by: NManenti Marco <marco_manenti@colman.it> Signed-off-by: NNickolay V. Shmyrev <nshmyrev@yandex.ru> Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
-