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* x86/non-x86: percpu, node ids, apic ids x86.git fixupMike Travis2008-01-301-0/+8
| | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Module: check to see if we have a built in module with the same nameGreg Kroah-Hartman2008-01-291-0/+10
| | | | | | | | | | | | When trying to load a module with the same name as a built-in one, a scary kobject backtrace comes up. Prevent that from checking for this condition and warning the user as to what exactly is going on. Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: add module taint on ndiswrapperJon Masters2008-01-291-1/+1
| | | | | | | | | | | | The struct module taints member is supposed to store per-module taint data. The kernel knows about certain specific external modules that will taint the kernel, such as ndiswrapper. Use of ndiswrapper possibly should set the per-module taint in addition to the global kernel taint flag, unless we're arguing not because wrapper module itself is not what actually causes the kernel to be tainted as such? Signed-off-by: Jon Masters <jcm@jonmasters.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: make module_address_lookup safeRusty Russell2008-01-291-9/+13
| | | | | | | | module_address_lookup releases preemption then returns a pointer into the module space. The only user (kallsyms) copies the result, so just do that under the preempt disable. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: better OOPS and lockdep coverage for loading modulesRusty Russell2008-01-291-18/+20
| | | | | | | | | | If we put the module in the linked list *before* calling into to, we get the module name and functions in the OOPS (is_module_address can find the module). It also helps lockdep in a similar way. Acked-and-tested-by: Joern Engel <joern@lazybastard.org> Tested-by: Erez Zadok <ezk@cs.sunysb.edu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: Fix gratuitous sprintf in module.cRusty Russell2008-01-291-1/+1
| | | | | | | Andrew sent an older version of this patch: we shouldn't use sprintf to copy a string. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: wait for dependent modules doing init.Rusty Russell2008-01-291-5/+23
| | | | | | | | | There have been reports of modules failing to load because the modules they depend on are still loading. This changes the modules to wait for a reasonable length of time in that case. We time out eventually, because there can be module loops or broken modules. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* debug: track and print last unloaded module in the oops traceArjan van de Ven2008-01-251-0/+6
| | | | | | | | | | | | | | | | | | | | Based on a suggestion from Andi: In various cases, the unload of a module may leave some bad state around that causes a kernel crash AFTER a module is unloaded; and it's then hard to find which module caused that. This patch tracks the last unloaded module, and prints this as part of the module list in the oops trace. Right now, only the last 1 module is tracked; I expect that this is enough for the vast majority of cases where this information matters; if it turns out that tracking more is important, we can always extend it to that. [ mingo@elte.hu: build fix ] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* debug: show being-loaded/being-unloaded indicator for modulesArjan van de Ven2008-01-251-6/+15
| | | | | | | | | | | | | | | | | | | | It's rather common that an oops/WARN_ON/BUG happens during the load or unload of a module. Unfortunatly, it's not always easy to see directly which module is being loaded/unloaded from the oops itself. Worse, it's not even always possible to ask the bug reporter, since there are so many components (udev etc) that auto-load modules that there's a good chance that even the reporter doesn't know which module this is. This patch extends the existing "show if it's tainting" print code, which is used as part of printing the modules in the oops/BUG/WARN_ON to include a "+" for "being loaded" and a "-" for "being unloaded". As a result this extension, the "taint_flags()" function gets renamed to "module_flags()" (and takes a module struct as argument, not a taint flags int). Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Kobject: convert remaining kobject_unregister() to kobject_put()Greg Kroah-Hartman2008-01-251-5/+4
| | | | | | | | | | | There is no need for kobject_unregister() anymore, thanks to Kay's kobject cleanup changes, so replace all instances of it with kobject_put(). Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: convert kernel/module.c to use kobject_init/add_ng()Greg Kroah-Hartman2008-01-251-8/+6
| | | | | | | | This converts the code to use the new kobject functions, cleaning up the logic in doing so. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: fix /sys/module/*/holders after sysfs logic changeKay Sievers2008-01-251-8/+7
| | | | | | | | | | | Sysfs symlinks now require fully registered kobjects as a target, otherwise the call to create a symlink will fail. Here we register the kobject before we request the symlink in the holders directory. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Tejun Heo <teheo@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: move the driver specific module code into the driver coreGreg Kroah-Hartman2008-01-251-87/+0
| | | | | | | | | | | | | | | The module driver specific code should belong in the driver core, not in the kernel/ directory. So move this code. This is done in preparation for some struct device_driver rework that should be confined to the driver core code only. This also lets us keep from exporting these functions, as no external code should ever be calling it. Thanks to Andrew Morton for the !CONFIG_MODULES fix. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kset: convert /sys/module to use kset_createGreg Kroah-Hartman2008-01-251-4/+3
| | | | | | | | | Dynamically create the kset instead of declaring it statically. We also rename module_subsys to module_kset to catch all users of the variable. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: get rid of kobject_add_dirGreg Kroah-Hartman2008-01-251-3/+3
| | | | | | | | | | kobject_create_and_add is the same as kobject_add_dir, so drop kobject_add_dir. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: remove struct kobj_type from struct ksetGreg Kroah-Hartman2008-01-251-1/+1
| | | | | | | | | | | | | | | | | We don't need a "default" ktype for a kset. We should set this explicitly every time for each kset. This change is needed so that we can make ksets dynamic, and cleans up one of the odd, undocumented assumption that the kset/kobject/ktype model has. This patch is based on a lot of help from Kay Sievers. Nasty bug in the block code was found by Dave Young <hidave.darkstar@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* modules: de-mutex more symbol lookup paths in the module codeRusty Russell2008-01-141-11/+18
| | | | | | | | | | | | | | | Kyle McMartin reports sysrq_timer_list_show() can hit the module mutex from hard interrupt context. These paths don't need to though, since we long ago changed all the module list manipulation to occur via stop_machine(). Disabling preemption is enough. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* module: fix and elaborate commentsMatti Linnanvuori2007-11-191-3/+5
| | | | | | | Fix and elaborate comments. Signed-off-by: Matti Linnanvuori <mattilinnanvuori@yahoo.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* Linux Kernel MarkersMathieu Desnoyers2007-10-191-0/+30
| | | | | | | | | | | | | | | | | | | The marker activation functions sits in kernel/marker.c. A hash table is used to keep track of the registered probes and armed markers, so the markers within a newly loaded module that should be active can be activated at module load time. marker_query has been removed. marker_get_first, marker_get_next and marker_release should be used as iterators on the markers. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: "Frank Ch. Eigler" <fche@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Mason <mmlnx@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* whitespace fixes: module loadingDaniel Walker2007-10-181-19/+19
| | | | | | Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* module: return error when mod_sysfs_init() failedAkinobu Mita2007-10-171-1/+2
| | | | | | | | | | | | | load_module() returns zero when mod_sysfs_init() fails, then the module loading will succeed accidentally. This patch makes load_module() return error correctly in that case. Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add /sys/module/name/notesRoland McGrath2007-10-171-0/+106
| | | | | | | | | | | | | This patch adds the /sys/module/<name>/notes/ magic directory, which has a file for each allocated SHT_NOTE section that appears in <name>.ko. This is the counterpart for each module of /sys/kernel/notes for vmlinux. Reading this delivers the contents of the module's SHT_NOTE sections. This lets userland easily glean any detailed information about that module's build that was stored there at compile time (e.g. by ld --build-id). Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Remove "unsafe" from module structRusty Russell2007-10-171-16/+5
| | | | | | | | | | | | | | | | | | | | Adrian Bunk points out that "unsafe" was used to mark modules touched by the deprecated MOD_INC_USE_COUNT interface, which has long gone. It's time to remove the member from the module structure, as well. If you want a module which can't unload, don't register an exit function. (Vlad Yasevich says SCTP is now safe to unload, so just remove the __unsafe there). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix Off-by-one in /sys/module/*/refcntAlexey Dobriyan2007-08-221-2/+1
| | | | | | | | | | sysfs internals were changed to not pin module in question. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kallsyms: make KSYM_NAME_LEN include space for trailing '\0'Tejun Heo2007-07-171-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | KSYM_NAME_LEN is peculiar in that it does not include the space for the trailing '\0', forcing all users to use KSYM_NAME_LEN + 1 when allocating buffer. This is nonsense and error-prone. Moreover, when the caller forgets that it's very likely to subtly bite back by corrupting the stack because the last position of the buffer is always cleared to zero. This patch increments KSYM_NAME_LEN by one and updates code accordingly. * off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro is fixed. * Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together, MODULE_NAME_LEN was treated as if it didn't include space for the trailing '\0'. Fix it. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Paulo Marques <pmarques@grupopie.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* modules: remove modlist_lockRusty Russell2007-07-161-21/+15
| | | | | | | | | | | | | | Now we always use stop_machine for module insertion or deletion, we no longer need the modlist_lock: merely disabling preemption is sufficient to block against list manipulation. This avoids deadlock on OOPSen where we can potentially grab the lock twice. Bug: 8695 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tobias Oed <tobiasoed@hotmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Make /proc/modules use seq_list_xxx helpersPavel Emelianov2007-07-161-15/+2
| | | | | | | | | Here there is not need even in .show callback altering. The original code passes list_head in *v. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sysfs: kill unnecessary attribute->ownerTejun Heo2007-07-121-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | sysfs is now completely out of driver/module lifetime game. After deletion, a sysfs node doesn't access anything outside sysfs proper, so there's no reason to hold onto the attribute owners. Note that often the wrong modules were accounted for as owners leading to accessing removed modules. This patch kills now unnecessary attribute->owner. Note that with this change, userland holding a sysfs node does not prevent the backing module from being unloaded. For more info regarding lifetime rule cleanup, please read the following message. http://article.gmane.org/gmane.linux.kernel/510293 (tweaked by Greg to not delete the field just yet, to make it easier to merge things properly.) Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Fix minor typoes in kernel/module.cRobert P. J. Day2007-05-091-5/+5
| | | | | | | Fix minor (comment) typoes in kernel/module.c. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Fix race between cat /proc/slab_allocators and rmmodAlexey Dobriyan2007-05-081-0/+27
| | | | | | | | | | 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix race between cat /proc/*/wchan and rmmod et alAlexey Dobriyan2007-05-081-0/+23
| | | | | | | | | | | | | | | 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: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Simplify kallsyms_lookup()Alexey Dobriyan2007-05-081-2/+4
| | | | | | | | | | | | | | 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: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix race between rmmod and cat /proc/kallsymsAlexey Dobriyan2007-05-081-5/+7
| | | | | | | | | | | | | | | 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: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Simplify module_get_kallsym() by dropping length argAlexey Dobriyan2007-05-081-2/+3
| | | | | | | | | | | | 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: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* module: use kreallocPekka Enberg2007-05-081-4/+4
| | | | | | | | | This converts an open-coded krealloc() to use the shiny new API. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds2007-05-051-5/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits) [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall [PATCH] i386: type may be unused [PATCH] i386: Some additional chipset register values validation. [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split. [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu [PATCH] i386: white space fixes in i387.h [PATCH] i386: Drop noisy e820 debugging printks [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems [PATCH] x86-64: Share identical video.S between i386 and x86-64 [PATCH] x86-64: Remove CONFIG_REORDER [PATCH] x86-64: Print type and size correctly for unknown compat ioctls [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0) [PATCH] i386: Little cleanups in smpboot.c [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible [PATCH] i386: Add X86_FEATURE_RDTSCP [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386 [PATCH] i386: Implement alternative_io for i386 ... Fix up trivial conflict in include/linux/highmem.h manually. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * [PATCH] x86: Allow percpu variables to be page-alignedJeremy Fitzhardinge2007-05-021-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let's allow page-alignment in general for per-cpu data (wanted by Xen, and Ingo suggested KVM as well). Because larger alignments can use more room, we increase the max per-cpu memory to 64k rather than 32k: it's getting a little tight. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * [PATCH] x86-64: Account for module percpu space separately from kernel percpuJeremy Fitzhardinge2007-05-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than using a single constant PERCPU_ENOUGH_ROOM, compute it as the sum of kernel_percpu + PERCPU_MODULE_RESERVE. This is now common to all architectures; if an architecture wants to set PERCPU_ENOUGH_ROOM to something special, then it may do so (ia64 is the only one which does). Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de>
* | remove "struct subsystem" as it is no longer neededGreg Kroah-Hartman2007-05-031-3/+5
|/ | | | | | | | | | | We need to work on cleaning up the relationship between kobjects, ksets and ktypes. The removal of 'struct subsystem' is the first step of this, especially as it is not really needed at all. Thanks to Kay for fixing the bugs in this patch. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* mod_sysfs_setup() doesn't return errno when kobject_add_dir() failure occursAkinobu Mita2007-04-271-1/+3
| | | | | | | | | | | mod_sysfs_setup() doesn't return an errno when kobject_add_dir() for module "holders" directory fails. So caller of mod_sysfs_setup() will keep going and get oops. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] driver core: fix built-in drivers sysfs linksKay Sievers2007-04-021-4/+14
| | | | | | | | | | | built-in drivers had broken sysfs links that caused bootup hangs for certain driver unregistry sequences. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "driver core: refcounting fix"Greg Kroah-Hartman2007-03-101-6/+0
| | | | | | | | | | This reverts commit 63ce18cfe685115ff8d341bae4c9204a79043cf0. It was the incorrect fix and causes a reference counting bug whenever any driver module is removed from the system. Mike Galbraith <efault@gmx.de> is looking for the real fix for his problem. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Revert "Driver core: let request_module() send a /sys/modules/kmod/-uevent"Greg Kroah-Hartman2007-02-231-16/+10
| | | | | | | | | | | This reverts commit c353c3fb0700a3c17ea2b0237710a184232ccd7f. It turns out that we end up with a loop trying to load the unix module and calling netfilter to do that. Will redo the patch later to not have this loop. Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: refcounting fixMike Galbraith2007-02-231-0/+6
| | | | | | | | | | | | | | Fix a reference counting bug exposed by commit 725522b5453dd680412f2b6463a988e4fd148757. If driver.mod_name exists, we take a reference in module_add_driver(), and never release it. Undo that reference in module_remove_driver(). Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: fix build errors: uevent with CONFIG_SYSFS=nRandy Dunlap2007-02-171-4/+10
| | | | | | | | | | | | | | | Fix source files to build with CONFIG_SYSFS=n. module_subsys is not available. SYSFS=n, MODULES=y: T:y SYSFS=n, MODULES=n: T:y SYSFS=y, MODULES=y: T:y SYSFS=y, MODULES=n: T:y Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver: remove redundant kobject_unregister checksMariusz Kozlowski2007-02-171-5/+2
| | | | | | | | Here is a patch that removes all redundant kobject_unregister argument checks. Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: let request_module() send a /sys/modules/kmod/-ueventKay Sievers2007-02-171-10/+16
| | | | | | | | | | | | | | | On recent systems, calls to /sbin/modprobe are handled by udev depending on the kind of device the kernel has discovered. This patch creates an uevent for the kernels internal request_module(), to let udev take control over the request, instead of forking the binary directly by the kernel. The direct execution of /sbin/modprobe can be disabled by setting: /sys/module/kmod/mod_request_helper (/proc/sys/kernel/modprobe) to an empty string, the same way /proc/sys/kernel/hotplug is disabled on an udev system. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* /sys/modules/*/holdersKay Sievers2007-02-071-6/+31
| | | | | | | | | | | | | | | | | | /sys/module/usbcore/ |-- drivers | |-- usb:hub -> ../../../subsystem/usb/drivers/hub | |-- usb:usb -> ../../../subsystem/usb/drivers/usb | `-- usb:usbfs -> ../../../subsystem/usb/drivers/usbfs |-- holders | |-- ehci_hcd -> ../../../module/ehci_hcd | |-- uhci_hcd -> ../../../module/uhci_hcd | |-- usb_storage -> ../../../module/usb_storage | `-- usbhid -> ../../../module/usbhid |-- initstate Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Modules: only add drivers/ direcory if neededGreg Kroah-Hartman2007-02-071-9/+11
| | | | | | | | | This changes the module core to only create the drivers/ directory if we are going to put something in it. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* MODULES: add the module name for built in kernel driversKay Sievers2007-02-071-9/+24
| | | | | | Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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