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* module: fix memory leak when load fails after srcversion/version allocatedRusty Russell2009-09-24
| | | | | | | | | | | | | Normally the twisty paths of sysfs will free the attributes, but not if we fail before we hook it into sysfs (which is the last thing we do in load_module). (This sysfs code is a turd, no doubt there are other issues lurking too). Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
* module: preferred way to use MODULE_AUTHORJohannes Berg2009-09-24
| | | | | | | | | | | | For the longest time now we've been using multiple MODULE_AUTHOR() statements when a module has more than one author, but the comment here disagrees. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* param: allow whitespace as kernel parameter separatorPeter Oberparleiter2009-09-24
| | | | | | | | | | | | | | | | Some boot mechanisms require that kernel parameters are stored in a separate file which is loaded to memory without further processing (e.g. the "Load from FTP" method on s390). When such a file contains newline characters, the kernel parameter preceding the newline might not be correctly parsed (due to the newline being stuck to the end of the actual parameter value) which can lead to boot failures. This patch improves kernel command line usability in such a situation by allowing generic whitespace characters as separators between kernel parameters. Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: reduce string table for loaded modules (v2)Jan Beulich2009-09-24
| | | | | | | | | | Also remove all parts of the string table (referenced by the symbol table) that are not needed for kallsyms use (i.e. which were only referenced by symbols discarded by the previous patch, or not referenced at all for whatever reason). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* module: reduce symbol table for loaded modules (v2)Jan Beulich2009-09-24
| | | | | | | | Discard all symbols not interesting for kallsyms use: absolute, section, and in the common case (!KALLSYMS_ALL) data ones. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds2009-09-23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (39 commits) cpumask: Move deprecated functions to end of header. cpumask: remove unused deprecated functions, avoid accusations of insanity cpumask: use new-style cpumask ops in mm/quicklist. cpumask: use mm_cpumask() wrapper: x86 cpumask: use mm_cpumask() wrapper: um cpumask: use mm_cpumask() wrapper: mips cpumask: use mm_cpumask() wrapper: mn10300 cpumask: use mm_cpumask() wrapper: m32r cpumask: use mm_cpumask() wrapper: arm cpumask: Use accessors for cpu_*_mask: um cpumask: Use accessors for cpu_*_mask: powerpc cpumask: Use accessors for cpu_*_mask: mips cpumask: Use accessors for cpu_*_mask: m32r cpumask: remove arch_send_call_function_ipi cpumask: arch_send_call_function_ipi_mask: s390 cpumask: arch_send_call_function_ipi_mask: powerpc cpumask: arch_send_call_function_ipi_mask: mips cpumask: arch_send_call_function_ipi_mask: m32r cpumask: arch_send_call_function_ipi_mask: alpha cpumask: remove obsolete topology_core_siblings and topology_thread_siblings: ia64 ...
| * cpumask: Move deprecated functions to end of header.Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | The new ones have pretty kerneldoc. Move the old ones to the end to avoid confusing people. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: benh@kernel.crashing.org
| * cpumask: remove unused deprecated functions, avoid accusations of insanityRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | We're not forcing removal of the old cpu_ functions, but we might as well delete the now-unused ones. Especially CPUMASK_ALLOC and friends. I actually got a phone call (!) from a hacker who thought I had introduced them as the new cpumask API. He seemed bewildered that I had lost all taste. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: benh@kernel.crashing.org
| * cpumask: use new-style cpumask ops in mm/quicklist.Rusty Russell2009-09-23
| | | | | | | | | | | | | | This slipped past the previous sweeps. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Christoph Lameter <cl@linux-foundation.org>
| * cpumask: use mm_cpumask() wrapper: x86Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask (to be a pointer). It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: use mm_cpumask() wrapper: umRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: use mm_cpumask() wrapper: mipsRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: use mm_cpumask() wrapper: mn10300Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask (to be a pointer). It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Also change the actual arg name here to "mm" (which it is), not "task". Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: use mm_cpumask() wrapper: m32rRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Hirokazu Takata <takata@linux-m32r.org> (fixes)
| * cpumask: use mm_cpumask() wrapper: armRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: Use accessors for cpu_*_mask: umRusty Russell2009-09-23
| | | | | | | | | | | | | | | | Use the accessors rather than frobbing bits directly (the new versions are const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com>
| * cpumask: Use accessors for cpu_*_mask: powerpcRusty Russell2009-09-23
| | | | | | | | | | | | | | | | Use the accessors rather than frobbing bits directly (the new versions are const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com>
| * cpumask: Use accessors for cpu_*_mask: mipsRusty Russell2009-09-23
| | | | | | | | | | | | | | | | Use the accessors rather than frobbing bits directly (the new versions are const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com>
| * cpumask: Use accessors for cpu_*_mask: m32rRusty Russell2009-09-23
| | | | | | | | | | | | | | | | Use the accessors rather than frobbing bits directly (the new versions are const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com>
| * cpumask: remove arch_send_call_function_ipiRusty Russell2009-09-23
| | | | | | | | | | | | | | Now everyone is converted to arch_send_call_function_ipi_mask, remove the shim and the #defines. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: arch_send_call_function_ipi_mask: s390Rusty Russell2009-09-23
| | | | | | | | | | | | | | We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: arch_send_call_function_ipi_mask: powerpcRusty Russell2009-09-23
| | | | | | | | | | | | | | | | We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(), and by defining it, the old arch_send_call_function_ipi is defined by the core code. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: arch_send_call_function_ipi_mask: mipsRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(), and by defining it, the old arch_send_call_function_ipi is defined by the core code. We also take the chance to wean the implementations off the obsolescent for_each_cpu_mask(): making send_ipi_mask take the pointer seemed the most natural way to ensure all implementations used for_each_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: arch_send_call_function_ipi_mask: m32rRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(), and by defining it, the old arch_send_call_function_ipi is defined by the core code. We also take the chance to wean the implementations off the obsolescent for_each_cpu_mask(): making send_ipi_mask take the pointer seemed the most natural way to ensure all implementations used for_each_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: arch_send_call_function_ipi_mask: alphaRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | We're weaning the core code off handing cpumask's around on-stack. This introduces arch_send_call_function_ipi_mask(). We also take the chance to wean the send_ipi_message off the obsolescent for_each_cpu_mask(): making it take a pointer seemed the most natural way to do this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | topology_thread_siblings: ia64 There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | topology_thread_siblings: powerpc There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | topology_thread_siblings: s390 There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | topology_thread_siblings: sparc There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | topology_thread_siblings: core There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove the deprecated smp_call_function_mask()Rusty Russell2009-09-23
| | | | | | | | | | | | Everyone is now using smp_call_function_many(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * ia64: convert last user of smp_call_function_maskRusty Russell2009-09-23
| | | | | | | | | | | | | | smp_call_function_many is the new version: it takes a pointer. Also, use mm accessor macro while we're changing this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: don't define set_cpus_allowed() if CONFIG_CPUMASK_OFFSTACK=yRusty Russell2009-09-23
| | | | | | | | | | | | You're not supposed to pass cpumasks on the stack in that case. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * ACPI: remove cpumask_t usageBjorn Helgaas2009-09-23
| | | | | | | | | | | | | | | | | | | | set_cpus_allowed() is on the way out; replace it with set_cpus_allowed_ptr(). Reference: http://lkml.org/lkml/2008/11/6/448 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: Remove mask field from commentsNobuhiro Iwamatsu2009-09-23
| | | | | | | | | | | | | | | | | | By 7be23e278f, mask field was deleted by irqaction. However, it was not deleted from comment. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> CC: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove unused mask field from struct irqaction.Rusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | Up until 1.1.83, the primitive human tribes used struct sigaction for interrupts. The sa_mask field was overloaded to hold a pointer to the name. When someone created the new "struct irqaction" they carried across the "mask" field as a kind of ancestor worship: the fact that it was unused makes clear its spiritual significance. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove last assignment to mask field of struct irqaction.Rusty Russell2009-09-23
| | | | | | | | | | | | | | This snuck in after the patch which removed all the others. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu>
| * cpumask: remove unused cpu_mask_allRusty Russell2009-09-23
| | | | | | | | | | | | | | It's only defined for NR_CPUS > BITS_PER_LONG; cpu_all_mask is always defined (and const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: mipsRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Thanks to Al Viro for reminding me of this, via Ingo) CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so: #define CPU_MASK_ALL (cpumask_t) { { ... } } Taking the address of such a temporary is questionable at best, unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added CPU_MASK_ALL_PTR: #define CPU_MASK_ALL_PTR (&CPU_MASK_ALL) Which formalizes this practice. One day gcc could bite us over this usage (though we seem to have gotten away with it so far). So replace everywhere which used &CPU_MASK_ALL or CPU_MASK_ALL_PTR with the modern "cpu_all_mask" (a real struct cpumask *), and remove CPU_MASK_ALL_PTR altogether. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Reported-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Mike Travis <travis@sgi.com>
| * cpumask: remove dangerous CPU_MASK_ALL_PTRRusty Russell2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Thanks to Al Viro for reminding me of this, via Ingo) CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so: #define CPU_MASK_ALL (cpumask_t) { { ... } } Taking the address of such a temporary is questionable at best, unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added CPU_MASK_ALL_PTR: #define CPU_MASK_ALL_PTR (&CPU_MASK_ALL) Which formalizes this practice. One day gcc could bite us over this usage (though we seem to have gotten away with it so far). Now all callers are removed, we kill it. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Reported-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Mike Travis <travis@sgi.com>
| * cpumask: remove obsolete node_to_cpumask now everyone uses cpumask_of_nodeRusty Russell2009-09-23
| | | | | | | | Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove the now-obsoleted pcibus_to_cpumask(): powerpcRusty Russell2009-09-23
| | | | | | | | | | | | cpumask_of_pcibus() is the new version. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove the now-obsoleted pcibus_to_cpumask(): mipsRusty Russell2009-09-23
| | | | | | | | | | | | cpumask_of_pcibus() is the new version. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: remove the now-obsoleted pcibus_to_cpumask(): alphaRusty Russell2009-09-23
| | | | | | | | | | | | cpumask_of_pcibus() is the new version. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * cpumask: use zalloc_cpumask_var() where possibleLi Zefan2009-09-23
| | | | | | | | | | | | | | Remove open-coded zalloc_cpumask_var() and zalloc_cpumask_var_node(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | headers: utsname.h reduxAlexey Dobriyan2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | * remove asm/atomic.h inclusion from linux/utsname.h -- not needed after kref conversion * remove linux/utsname.h inclusion from files which do not need it NOTE: it looks like fs/binfmt_elf.c do not need utsname.h, however due to some personality stuff it _is_ needed -- cowardly leave ELF-related headers and files alone. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Revert "kmod: fix race in usermodehelper code"Sebastian Andrzej Siewior2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit c02e3f361c7 ("kmod: fix race in usermodehelper code") The patch is wrong. UMH_WAIT_EXEC is called with VFORK what ensures that the child finishes prior returing back to the parent. No race. In fact, the patch makes it even worse because it does the thing it claims not do: - It calls ->complete() on UMH_WAIT_EXEC - the complete() callback may de-allocated subinfo as seen in the following call chain: [<c009f904>] (__link_path_walk+0x20/0xeb4) from [<c00a094c>] (path_walk+0x48/0x94) [<c00a094c>] (path_walk+0x48/0x94) from [<c00a0a34>] (do_path_lookup+0x24/0x4c) [<c00a0a34>] (do_path_lookup+0x24/0x4c) from [<c00a158c>] (do_filp_open+0xa4/0x83c) [<c00a158c>] (do_filp_open+0xa4/0x83c) from [<c009ba90>] (open_exec+0x24/0xe0) [<c009ba90>] (open_exec+0x24/0xe0) from [<c009bfa8>] (do_execve+0x7c/0x2e4) [<c009bfa8>] (do_execve+0x7c/0x2e4) from [<c0026a80>] (kernel_execve+0x34/0x80) [<c0026a80>] (kernel_execve+0x34/0x80) from [<c004b514>] (____call_usermodehelper+0x130/0x148) [<c004b514>] (____call_usermodehelper+0x130/0x148) from [<c0024858>] (kernel_thread_exit+0x0/0x8) and the path pointer was NULL. Good that ARM's kernel_execve() doesn't check the pointer for NULL or else I wouldn't notice it. The only race there might be is with UMH_NO_WAIT but it is too late for me to investigate it now. UMH_WAIT_PROC could probably also use VFORK and we could save one exec. So the only race I see is with UMH_NO_WAIT and recent scheduler changes where the child does not always run first might have trigger here something but as I said, it is late.... Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2009-09-23
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add driver for Atmel AT42QT2160 Sensor Chip Input: max7359 - use threaded IRQs Input: add driver for Maxim MAX7359 key switch controller Input: add driver for ADP5588 QWERTY I2C Keypad Input: add touchscreen driver for MELFAS MCS-5000 controller Input: add driver for OpenCores Keyboard Controller Input: dm355evm_keys - remove dm355evm_keys_hardirq Input: synaptics_i2c - switch to using __cancel_delayed_work() Input: ad7879 - add support for AD7889 Input: atkbd - rely on input core to restore state on resume Input: add generic suspend and resume for input devices Input: libps2 - additional locking for i8042 ports
| * | Input: add driver for Atmel AT42QT2160 Sensor ChipRaphael Derosso Pereira2009-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | This version only supports individual cells (no slide support yet). The code has been tested on proprietary development ARM board, but should work fine on other machines. Signed-off-by: Raphael Derosso Pereira <raphaelpereira@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | Input: max7359 - use threaded IRQsDmitry Torokhov2009-09-22
| | | | | | | | | | | | | | | | | | | | | | | | Convert max7359 driver to use IRQ threading instead of using workqueue. Tested-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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