- 08 May, 2007 40 commits
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John Johansen authored
notify_change() already calls security_inode_setattr() before calling iop->setattr. Signed-off-by:
Tony Jones <tonyj@suse.de> Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Signed-off-by:
John Johansen <jjohansen@suse.de> Acked-by:
Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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David Brownell authored
We've had various reports of some legacy "probe the hardware" style platform drivers having nasty problems with hotplug support. The core issue is that those legacy drivers don't fully conform to the driver model. They assume a role that should be the responsibility of infrastructure code: creating device nodes. The "modprobe" step in hotplugging relies on drivers to have split those roles into different modules. The lack of this split causes the problems. When a driver creates nodes for devices that don't exist (sending a hotplug event), then exits (aborting one modprobe) before the "modprobe $MODALIAS" step completes (by failing, since it's in the middle of a modprobe), the result can be an endless loop of modprobe invocations ... badness. This fix uses the newish per-device flag controlling issuance of "add" events. (A previous version of this patch used a per-device "driver can hotplug" flag, which only scrubbed $MODALIAS from the environment rather than suppressing the entire hotplug event.) It also shrinks that flag to one bit, saving a word in "struct device". So the net of this patch is removing some nasty failures with legacy drivers, while retaining hotplug capability for the majority of platform drivers. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <gregkh@suse.de> Cc: Andres Salomon <dilinger@debian.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by:
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Borislav Petkov authored
A patch for kernel-doc that enables the generation of a global, TOC-like index.html page after building 'htmldocs' Signed-off-by:
Borislav Petkov <bbpetkov@yahoo.de> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Mike Miller (OS Dev) authored
Set rq->errors more correctly in cciss driver. Previously we had set it synonymously with the meaning of the last parameter of end_that_last_request and complete_buffers (the "uptodate" parameter) and had gotten away with it for all this time because nobody ever looked at rq->errors. SCSI_IOCTL_SEND_COMMAND looks at rq->errors, so now it matters that it be right. Signed-off-by:
Stephen M. Cameron <steve.cameron@hp.com> Signed-off-by:
Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Mike Miller (OS Dev) authored
For all of you that think cciss should be a scsi driver here is the patch that you have been waiting for all these years. This patch actually adds the SG_IO ioctl to cciss. The primary purpose is for clustering and high-availibilty. But now anyone can exploit this ioctl in any manner they wish. Note, SCSI_IOCTL_SEND_COMMAND doesn't work with this patch due to rq->errors being set incorrectly. Subsequent patch fixes that. Signed-off-by:
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Mike Miller (OS Dev) authored
Reformat some error handling code to reduce line lengths a bit. Signed-off-by:
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Martin Peschke authored
We can save some lines of code by using seq_release_private(). Signed-off-by:
Martin Peschke <mp3@de.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Martin Peschke authored
We can save some lines of code by using seq_release_private(). Signed-off-by:
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Christoph Hellwig authored
Merge all compat ioctl handling into compat_ioctl.c instead of splitting it over compat.c and compat_ioctl.c. This also allows to get rid of ioctl32.h Signed-off-by:
Christoph Hellwig <hch@lst.de> Looks-good-to: Andi Kleen <ak@suse.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Robert P. J. Day authored
Following the programming advice laid down in the gcc manual, make sure the case "..." operator has spaces on either side. According to: http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Case-Ranges.html#Case-Ranges: "Be careful: Write spaces around the ..., for otherwise it may be parsed wrong when you use it with integer values." Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Akinobu Mita authored
This patch fixes two things in module_init. - fix register_chrdev() error check Currently dtlk doesn't check register_chrdev() failure correctly. register_chrdev() returns a errno on failure. - check probe failure dtlk ignores probe failure and allows the module loading without such device. I got "Trying to free nonexistent resource" message by release_region() when unloading module without device. [akpm@linux-foundation.org: fix error code return] Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Chris Pallotta <chris@allmedia.com> Cc: Jim Van Zandt <jrv@vanzandt.mv.com> Signed-off-by:
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Philippe De Muyter authored
Add support for the Motorola sysv68 disk partition (slices in motorola doc). Signed-off-by:
Philippe De Muyter <phdm@macqel.be> Signed-off-by:
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Ravikiran G Thirumalai authored
We noticed a drop in n/w performance due to the irq_desc being cacheline aligned rather than internode aligned. We see 50% of expected performance when two e1000 nics local to two different nodes have consecutive irq descriptors allocated, due to false sharing. Note that this patch does away with cacheline padding for the UP case, as it does not seem useful for UP configurations. Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Pavel Emelianov authored
This causes constructions like down_write(&mm1->mmap_sem); if (down_write_trylock(&mm2->mmap_sem)) { ... up_write(&mm2->mmap_sem); } up_write(&mm1->mmap_sem); generate a lockdep warning about circular locking dependence. Call rwsem_acquire() with trylock set to 1. Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: -
Christoph Hellwig authored
Now that there is no arch-specific compat ioctl handling left there is not point in having a separate copat_ioctl.h, so merge it into compat_ioctl.c Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Borislav Petkov authored
In a different approach here's a patch that handles the special case of composite arithmetic expressions in array size initializers. With it, prior to pushing the split strings on the @first_arg array, I split the keywords before the array name as before and then keep the array name along with the subscript expression as a single whole element which gets pushed last. In this manner, kernel-doc produces correct output without removing whitespaces which makes the array subscripts unreadable in the docs. Signed-off-by:
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Milind Arun Choudhary authored
ROUND_UP macro cleanup use ALIGN Signed-off-by:
Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by:
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Milind Arun Choudhary authored
ROUND_UP macro cleanup use,ALIGN or DIV_ROUND_UP where ever appropriate. Signed-off-by:
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Randy Dunlap authored
drivers/parport/parport_serial.c:402: warning: ignoring return value of 'pci_enable_device', declared with attribute warn_unused_result Signed-off-by:
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Alexey Dobriyan authored
linux/module.h -> linux/elf.h -> asm-i386/elf.h -> linux/utsname.h -> linux/sched.h Noticeably cut the number of files which are rebuild upon touching sched.h and cut down pulled junk from every module.h inclusion. Signed-off-by:Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Milind Arun Choudhary authored
ROUND_UP macro cleanup use DIV_ROUND_UP Signed-off-by:
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Thomas Gleixner authored
The deprecation of the SA_xxx interrupt flags did not emit deprecated warnings. Andrew said about the removal of the deprecated flag defines: > This is going to break a lot of external stuff. We should have found > a way to make usage of SA_* emit deprecated warnings (or _some_ > warning) to warn people of impending doom. But I can't immediately > find a way of doing that. if we _can_ find a way of doing this, I > suspect we'll need to do it, and give people another six months. It's > going to get ugly out there. We shall see... Define the deprecated flags as a call to a __deprecated inline function so a warning is emitted on compile time. Extend the reprieve of out of tree drivers to 9/2007. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Thomas Gleixner authored
Fix the last users of the deprecated SA_xxx interrupt flags. Signed-off-by:
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Bert Wesarg authored
This fixes the comment for the function param_array. Which lies that it only *temporarily* mangle the input string @val. Signed-off-by:
Bert Wesarg <wesarg@informatik.uni-halle.de> Signed-off-by:
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Alexey Dobriyan authored
Same story as with cat /proc/*/wchan race vs rmmod race, only /proc/slab_allocators want more info than just symbol name. Signed-off-by:
Alexey Dobriyan <adobriyan@sw.ru> Acked-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Alexey Dobriyan authored
kallsyms_lookup() can go iterating over modules list unprotected which is OK for emergency situations (oops), but not OK for regular stuff like /proc/*/wchan. Introduce lookup_symbol_name()/lookup_module_symbol_name() which copy symbol name into caller-supplied buffer or return -ERANGE. All copying is done with module_mutex held, so... Signed-off-by:
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Alexey Dobriyan authored
Several kallsyms_lookup() pass dummy arguments but only need, say, module's name. Make kallsyms_lookup() accept NULLs where possible. Also, makes picture clearer about what interfaces are needed for all symbol resolving business. Signed-off-by:
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Alexey Dobriyan authored
module_get_kallsym() leaks "struct module *" outside of module_mutex which is no-no, because module can dissapear right after mutex unlock. Copy all needed information from inside module_mutex into caller-supplied space. [bunk@stusta.de: is_exported() can now become static] Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Alexey Dobriyan authored
module_get_kallsym() could in theory truncate module symbol name to fit in buffer, but nobody does this. Always use KSYM_NAME_LEN + 1 bytes for name. Suggested by lg^WRusty. Signed-off-by:
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David Brownell authored
Teach PNPACPI how to hook up its devices to their ACPI nodes, so that pnpdev->dev.archdata points to the parallel acpi device node. Previously this only worked for PCI, leaving a notable hole. Export "acpi_bus_type" so this can work. Remove some extraneous whitespace. Signed-off-by:
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kalash nainwal authored
When a binary format is unregistered and re-registered, register_binfmt fails with -EBUSY. The reason is that unregister_binfmt does not set fmt->next to NULL, and seeing (fmt->next != NULL), register_binfmt fails with -EBUSY. One can find his way around by explicitly setting fmt->next to NULL after unregistering, but that is kind of unclean (one should better be using only the interfaces, and not the interal members, isn't it?) Attached one-liner can fix it. Signed-off-by:
Kalash Nainwal <kalash.nainwal@gmail.com> Signed-off-by:
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Ananth N Mavinakayanahalli authored
In certain cases like when the real return address can't be found or when the number of tracked calls to a kretprobed function is less than the number of returns, we may not be able to find the correct return address after processing a kretprobe. Currently we just do a BUG_ON, but no information is provided about the actual failing kretprobe. Print out details of the kretprobe before calling BUG(). Signed-off-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by:
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Ingo Molnar authored
enhance the initcall_debug boot option: - measure the time the initcall took to execute and report it in units of milliseconds. - show the return code of initcalls (useful to see failures and to make sure that an initcall hung) [akpm@linux-foundation.org: fix printk warning] Signed-off-by:
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Jan Engelhardt authored
Fix kevent's childs priority greediness. Such tasks were always scheduled at nice level -5 and, at that time, udev stole us the CPU time with -5. Already posted at http://lkml.org/lkml/2005/1/10/85 [akpm@linux-foundation.org: add comment] Signed-off-by:
Jan Engelhardt <jengelh@gmx.de> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by:
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Simon Horman authored
Currently the size of the per-cpu region reserved to save crash notes is set by the per-architecture value MAX_NOTE_BYTES. Which in turn is currently set to 1024 on all supported architectures. While testing ia64 I recently discovered that this value is in fact too small. The particular setup I was using actually needs 1172 bytes. This lead to very tedious failure mode where the tail of one elf note would overwrite the head of another if they ended up being alocated sequentially by kmalloc, which was often the case. It seems to me that a far better approach is to caclculate the size that the area needs to be. This patch does just that. If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is needed then this should be as easy as making MAX_NOTE_BYTES larger in arch/asm-ia64/kexec.h. Perhaps 2048 would be a good choice. However, I think that the approach in this patch is a much more robust idea. Acked-by:
Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Ken Chen authored
Remove artificial maximum 256 loop device that can be created due to a legacy device number limit. Searching through lkml archive, there are several instances where users complained about the artificial limit that the loop driver impose. There is no reason to have such limit. This patch rid the limit entirely and make loop device and associated block queue instantiation on demand. With on-demand instantiation, it also gives the benefit of not wasting memory if these devices are not in use (compare to current implementation that always create 8 loop devices), a net improvement in both areas. This version is both tested with creation of large number of loop devices and is compatible with existing losetup/mount user land tools. There are a number of people who worked on this and provided valuable suggestions, in no particular order, by: Jens Axboe Jan Engelhardt Christoph Hellwig Thomas M Signed-off-by:
Ken Chen <kenchen@google.com> Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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Russell King authored
Instead of having /dev/port support dependent in multiple places on a string of preprocessor symbols, define a new configuration directive for it. This ensures that all four places remain consistent with each other. Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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John Feeney authored
The 82875 EDAC driver enables an otherwise-hidden PCI device, but doesn't register it as a PCI device properly. Therefore, the device list in /proc/bus/pci/devices is different than the tree in /sys/bus/pci. This usually manifests as the X server failing to start, since it expects the two lists to be consistent. Signed-off-by:
Adam Jackson <ajackson@redhat.com> Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Doug Thompson <norsk5@xmission.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Randy Dunlap authored
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by:
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Jeremy Fitzhardinge authored
Add touch_all_softlockup_watchdogs() to allow the softlockup watchdog timers on all cpus to be updated. This is used to prevent sysrq-t from generating a spurious watchdog message when generating lots of output. Softlockup watchdogs use sched_clock() as its timebase, which is inherently per-cpu (at least, when it is measuring unstolen time). Because of this, it isn't possible for one CPU to directly update the other CPU's timers, but it is possible to tell the other CPUs to do update themselves appropriately. Signed-off-by:
Jeremy Fitzhardinge <jeremy@xensource.com> Acked-by:
Chris Lalancette <clalance@redhat.com> Signed-off-by:
Prarit Bhargava <prarit@redhat.com> Cc: Rick Lindsley <ricklind@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by:
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