- 22 10月, 2008 1 次提交
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由 Mohan Kumar M 提交于
This adds relocatable kernel support for kdump. With this one can use the same regular kernel to capture the kdump. A signature (0xfeed1234) is passed in r6 from panic code to the next kernel through kexec_sequence and purgatory code. The signature is used to differentiate between kdump kernel and non-kdump kernels. The purgatory code compares the signature and sets the __kdump_flag in head_64.S. During the boot up, kernel code checks __kdump_flag and if it is set, the kernel will behave as relocatable kdump kernel. This kernel will boot at the address where it was loaded by kexec-tools ie. at the address reserved through crashkernel boot parameter. CONFIG_CRASH_DUMP depends on CONFIG_RELOCATABLE option to build kdump kernel as relocatable. So the same kernel can be used as production and kdump kernel. This patch incorporates the changes suggested by Paul Mackerras to avoid GOT use and to avoid two copies of the code. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NMohan Kumar M <mohan@in.ibm.com> Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 21 10月, 2008 8 次提交
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由 Wolfgang Ocker 提交于
The patch allows to specify that an SPI device needs an active high chip select. Signed-off-by: NWolfgang Ocker <weo@reccoware.de> Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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由 Anton Vorontsov 提交于
We don't want to encourage the bogus device_type usage. The device type isn't used in the code, so we can simply remove it from the documentation and dts files. Boards should specify proper compatible entries instead. Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com> Acked-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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由 Harvey Harrison 提交于
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yu Zhao 提交于
The 'use pci_find_ext_capability everywhere' cleanup brought a new bug, which makes the AER stop working. Fix it by actually using find_ext_cap instead of just find_cap. Drop the unused config space size define while we're at it. Signed-off-by: NYu Zhao <yu.zhao@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Chuck Ebbert 提交于
It can be handy so make sure people know about it. Signed-off-by: NChuck Ebbert <cebbert@redhat.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Roland Dreier 提交于
The current MSI-HOWTO.txt says that device drivers should not request the memory space that contains MSI-X tables. This is because the original MSI-X implementation did a request_mem_region() on this space, but that code was removed long ago (in the pre-git era, in fact). Years after the code was changed, we might as well clean up the documention to avoid a confusing mention of requesting regions: drivers using MSI-X can just use pci_request_regions() just like any other driver, and so there's no need for MSI-HOWTO.txt to talk about this at all. Signed-off-by: NRoland Dreier <roland@digitalvampire.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Andi Kleen 提交于
Since the code is shared pretty much most of the pci= options are shared, but kernel-parameters.txt marked most of them as i386 only. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Jean Delvare 提交于
Only accept dynids whose driver_data value matches one of the driver's pci_driver_id entries. This prevents the user from accidentally passing values the drivers do not expect. Cc: Milton Miller <miltonm@bga.com> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NJean Delvare <khali@linux-fr.org> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 20 10月, 2008 10 次提交
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由 Simon Horman 提交于
IA64, PPC and SH also support the elfcorehdr command line. Signed-off-by: NSimon Horman <horms@verge.net.au> Acked-by: NVivek Goyal <vgoyal@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KAMEZAWA Hiroyuki 提交于
There are not-on-LRU pages which can be mapped and they are not worth to be accounted. (becasue we can't shrink them and need dirty codes to handle specical case) We'd like to make use of usual objrmap/radix-tree's protcol and don't want to account out-of-vm's control pages. When special_mapping_fault() is called, page->mapping is tend to be NULL and it's charged as Anonymous page. insert_page() also handles some special pages from drivers. This patch is for avoiding to account special pages. Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Hidehiro Kawai 提交于
If the journal doesn't abort when it gets an IO error in file data blocks, the file data corruption will spread silently. Because most of applications and commands do buffered writes without fsync(), they don't notice the IO error. It's scary for mission critical systems. On the other hand, if the journal aborts whenever it gets an IO error in file data blocks, the system will easily become inoperable. So this patch introduces a filesystem option to determine whether it aborts the journal or just call printk() when it gets an IO error in file data. If you mount a ext3 fs with data_err=abort option, it aborts on file data write error. If you mount it with data_err=ignore, it doesn't abort, just call printk(). data_err=ignore is the default. Signed-off-by: NHidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andi Kleen 提交于
I fell into the trap recently that it only dumps hrtimers instead of all timers. Fix the documentation. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matt Helsley 提交于
Describe why we need the freezer subsystem and how to use it in a documentation file. Since the cgroups.txt file is focused on the subsystem-agnostic portions of cgroups make a directory and move the old cgroups.txt file at the same time. Signed-off-by: NMatt Helsley <matthltc@us.ibm.com> Cc: Paul Menage <menage@google.com> Cc: containers@lists.linux-foundation.org Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrea Righi 提交于
The current documentation of dirty_ratio and dirty_background_ratio is a bit misleading. In the documentation we say that they are "a percentage of total system memory", but the current page writeback policy, intead, is to apply the percentages to the dirtyable memory, that means free pages + reclaimable pages. Better to be more explicit to clarify this concept. Signed-off-by: NAndrea Righi <righi.andrea@gmail.com> Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KOSAKI Motohiro 提交于
Presently hugepage's vma has a VM_RESERVED flag in order not to be swapped. But a VM_RESERVED vma isn't core dumped because this flag is often used for some kernel vmas (e.g. vmalloc, sound related). Thus hugepages are never dumped and it can't be debugged easily. Many developers want hugepages to be included into core-dump. However, We can't read generic VM_RESERVED area because this area is often IO mapping area. then these area reading may change device state. it is definitly undesiable side-effect. So adding a hugepage specific bit to the coredump filter is better. It will be able to hugepage core dumping and doesn't cause any side-effect to any i/o devices. In additional, libhugetlb use hugetlb private mapping pages as anonymous page. Then, hugepage private mapping pages should be core dumped by default. Then, /proc/[pid]/core_dump_filter has two new bits. - bit 5 mean hugetlb private mapping pages are dumped or not. (default: yes) - bit 6 mean hugetlb shared mapping pages are dumped or not. (default: no) I tested by following method. % ulimit -c unlimited % ./crash_hugepage 50 % ./crash_hugepage 50 -p % ls -lh % gdb ./crash_hugepage core % % echo 0x43 > /proc/self/coredump_filter % ./crash_hugepage 50 % ./crash_hugepage 50 -p % ls -lh % gdb ./crash_hugepage core #include <stdlib.h> #include <stdio.h> #include <unistd.h> #include <sys/mman.h> #include <string.h> #include "hugetlbfs.h" int main(int argc, char** argv){ char* p; int ch; int mmap_flags = MAP_SHARED; int fd; int nr_pages; while((ch = getopt(argc, argv, "p")) != -1) { switch (ch) { case 'p': mmap_flags &= ~MAP_SHARED; mmap_flags |= MAP_PRIVATE; break; default: /* nothing*/ break; } } argc -= optind; argv += optind; if (argc == 0){ printf("need # of pages\n"); exit(1); } nr_pages = atoi(argv[0]); if (nr_pages < 2) { printf("nr_pages must >2\n"); exit(1); } fd = hugetlbfs_unlinked_fd(); p = mmap(NULL, nr_pages * gethugepagesize(), PROT_READ|PROT_WRITE, mmap_flags, fd, 0); sleep(2); *(p + gethugepagesize()) = 1; /* COW */ sleep(2); /* crash! */ *(int*)0 = 1; return 0; } Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: NKawai Hidehiro <hidehiro.kawai.ez@hitachi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: William Irwin <wli@holomorphy.com> Cc: Adam Litke <agl@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Lee Schermerhorn 提交于
Documentation for unevictable lru list and its usage. Signed-off-by: NLee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: NRik van Riel <riel@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Thomas Gleixner 提交于
SysRq-Q also dumps information about the clockevent devices. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Andi Kleen 提交于
I fell into the trap recently that it only dumps hrtimers instead of all timers. Fix the documentation. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Cc: torvalds@linux-foundation.org Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 18 10月, 2008 11 次提交
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由 Jaroslav Kysela 提交于
This patch adds initial_descriptor_timeout module parameter for usbcore.ko to allow modify initial 64-byte USB_REQ_GET_DESCRIPTOR timeout for non-standard devices. For example, the SATA8000 device from DATAST0R Technology Corp requires about 10 seconds to send reply (probably it waits until inserted disk is ready for operation). Also, this patch adds missing usbcore parameters to Documentation/kernel-parameters.txt. Signed-off-by: NJaroslav Kysela <perex@perex.cz> Acked-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sarah Sharp 提交于
Create a new sysfs file per interface named supports_autosuspend. This file returns true if an interface driver's .supports_autosuspend flag is set. It also returns true if the interface is unclaimed (since the USB core will autosuspend a device if an interface is not claimed). This new sysfs file will be useful for user space scripts to test whether a USB device correctly auto-suspends. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Stephen Ware 提交于
This patch adds the vstusb driver to the drivers/usb/misc directory. This driver provides support for Vernier Software & Technology spectrometers, all made by Ocean Optics. The driver provides both IOCTL and read()/write() methods for sending raw data to spectrometers across the bulk channel. Each method allows for a configured timeout. From: Stephen Ware <stephen.ware@eqware.net> Signed-off-by: NDennis O'Brien <dennis.obrien@eqware.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Geoff Levand 提交于
Correct errors in the descriptions for usb_autopm_enable and usb_autopm_disable in the USB PM doc. Signed-off-by: NGeoff Levand <geoff@infradead.org> Acked-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
This adds Documentation for the extensions of the anchor API. Signed-off-by: NOliver Neukum <oneukum@suse.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Felipe Balbi 提交于
The following patch introduces a new f_obex.c function driver. It allows userspace obex servers to use usb as transport layer for their messages. [ dbrownell@users.sourceforge.net: various fixes and cleanups ] Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com> Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Greg Kroah-Hartman 提交于
This driver was originaly written by Stefan Kopp, but massively reworked by Greg for submission. Thanks to Felipe Balbi <me@felipebalbi.com> for lots of work in cleaning up this driver. Thanks to Oliver Neukum <oliver@neukum.org> for reviewing previous versions and pointing out problems. Cc: Stefan Kopp <stefan_kopp@agilent.com> Cc: Marcel Janssen <korgull@home.nl> Cc: Felipe Balbi <me@felipebalbi.com> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Harrison Metzger 提交于
Added basic support for a Delcom USB 7-segment LED Display Signed-off by: Harrison Metzger <harrisonmetz@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Darron Broad 提交于
This tuner was already supported by proxy as an FMD1216ME, however, the MEX uses a different FM Radio IF so this addition is now required. Signed-off-by: NDarron Broad <darron@kewl.org> Signed-off-by: NSteven Toth <stoth@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Michael Krufky 提交于
Add autodetection support for a new revision of the Hauppauge HVR950Q (2040:721e) Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Isaku Yamahata 提交于
Recipe for using xen/ia64 with pv_ops domU. Signed-off-by: NAkio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 17 10月, 2008 10 次提交
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由 Darrick J. Wong 提交于
Add at least the bare minimum of documentation for this chip. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Jean Delvare 提交于
This information was provided in lm-sensors ticket #2350: http://www.lm-sensors.org/ticket/2350 This is IMHO still not enough to be able to safely implement fan control support for the AS99127F, but this is valuable information so I am adding it to the documentation. Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Jean Delvare 提交于
Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Marc Hulsman 提交于
Add support to set target temperature and tolerance for thermal cruise mode. Signed-off-by: NMarc Hulsman <m.hulsman@tudelft.nl> Acked-by: NHans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Marc Hulsman 提交于
Add support for pwm_enable. Signed-off-by: NMarc Hulsman <m.hulsman@tudelft.nl> Acked-by: NHans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Marc Hulsman 提交于
Add PWM manual control. Signed-off-by: NMarc Hulsman <m.hulsman@tudelft.nl> Acked-by: NHans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Jean Delvare 提交于
The it87 driver doesn't follow the standard sensor type values as documented in Documentation/hwmon/sysfs-interface. It uses value 2 for thermistors instead of value 4. This causes "sensors" to tell the user that the chip is setup for a transistor while it is actually setup for a thermistor. Using value 4 for thermistors solves the problem. For compatibility reasons, we still accept value 2 but emit a warning message so that users update their configuration files. Signed-off-by: NJean Delvare <khali@linux-fr.org> Acked-by: NHans de Goede <hdegoede@redhat.com>
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由 Jean Delvare 提交于
Implement the standard PWM frequency interface: pwm[1-*]_freq in units of 1 Hz, instead of the non-standard pwm[1-*]_auto_pwm_freq in units of 0.1 Hz. The old naming was not only non-standard, it was also confusing, because it suggested that the frequency value only applied in automatic fan speed mode, which isn't true. Signed-off-by: NJean Delvare <khali@linux-fr.org> Acked-by: NHerbert Poetzl <herbert@13thfloor.at>
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由 Ben Hutchings 提交于
The lm87 driver normally assumes that firmware configured the chip correctly. Since this is not always the case, alllow platform code to set the channel register value via platform_data. All other configuration registers can be changed after driver initialisation. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Ben Hutchings 提交于
These Maxim chips are similar to MAX6657 but use unsigned temperature values to allow for readings up to 145 degrees. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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