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| * | | [PARISC] wire up the fhandle syscallsJames Bottomley2011-04-15
| | | | | | | | | | | | | | | | | | | | Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * | | [PARISC] wire up clock_adjtime syscallJames Bottomley2011-04-15
| | | | | | | | | | | | | | | | | | | | Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * | | [PARISC] wire up fanotify syscallsJames Bottomley2011-04-15
| | | | | | | | | | | | | | | | | | | | Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * | | [PARISC] fix pacache .size with new binutilsMeelis Roos2011-04-15
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | Fix style of flush_user_dcache_range_asm procedure declaration in arch/parisc/kernel/pacache.s to be consistent with other assembly procedures. Signed-off-by: Meelis Roos <mroos@linux.ee> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | | extable, core_kernel_data(): Make sure all archs define _sdataSteven Rostedt2011-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new utility function (core_kernel_data()) is used to determine if a passed in address is part of core kernel data or not. It may or may not return true for RO data, but this utility must work for RW data. Thus both _sdata and _edata must be defined and continuous, without .init sections that may later be freed and replaced by volatile memory (memory that can be freed). This utility function is used to determine if data is safe from ever being freed. Thus it should return true for all RW global data that is not in a module or has been allocated, or false otherwise. Also change core_kernel_data() back to the more precise _sdata condition and document the function. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Hirokazu Takata <takata@linux-m32r.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: JamesE.J.Bottomley <jejb@parisc-linux.org> Link: http://lkml.kernel.org/r/1305855298.1465.19.camel@gandalf.stny.rr.com Signed-off-by: Ingo Molnar <mingo@elte.hu> ---- arch/alpha/kernel/vmlinux.lds.S | 1 + arch/m32r/kernel/vmlinux.lds.S | 1 + arch/m68k/kernel/vmlinux-std.lds | 2 ++ arch/m68k/kernel/vmlinux-sun3.lds | 1 + arch/mips/kernel/vmlinux.lds.S | 1 + arch/parisc/kernel/vmlinux.lds.S | 3 +++ kernel/extable.c | 12 +++++++++++- 7 files changed, 20 insertions(+), 1 deletion(-)
* | | sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()Peter Zijlstra2011-04-14
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For future rework of try_to_wake_up() we'd like to push part of that function onto the CPU the task is actually going to run on. In order to do so we need a generic callback from the existing scheduler IPI. This patch introduces such a generic callback: scheduler_ipi() and implements it as a NOP. BenH notes: PowerPC might use this IPI on offline CPUs under rare conditions! Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110405152728.744338123@chello.nl
* | Fix common misspellingsLucas De Marchi2011-03-31
| | | | | | | | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* | parisc: Use irq_to_desc() in show_interrupts()Thomas Gleixner2011-03-29
| | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | parisc: Convert irq namespaceThomas Gleixner2011-03-29
| | | | | | | | | | | | | | | | Convert to the new function names. Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: linux-parisc@vger.kernel.org
* | parisc: Convert the final irq bitsThomas Gleixner2011-03-29
|/ | | | | | | | | | | 1) As promised in the comment, the core does not copy cpumask anymore when the arch code returns -EINVAL 2) Get the per cpu information from irq_data Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: linux-parisc@vger.kernel.org
* Merge branch 'for-linus' of ↵Linus Torvalds2011-03-21
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6: [PARISC] Convert to new irq_chip functions [PARISC] fix per-cpu flag problem in the cpu affinity checkers [PARISC] fix vmap flush/invalidate eliminate special FLUSH flag from page table parisc: flush pages through tmpalias space
| * Merge branch 'irq' into for-nextJames Bottomley2011-02-10
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| | * [PARISC] Convert to new irq_chip functionsThomas Gleixner2011-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert all the parisc driver interrupt handlers (dino, eisa, gsc, iosapic and superio) as well as the cpu interrupts. Prepare show_interrupts for GENERIC_HARDIRQS_NO_DEPRECATED and finally selects that Kconfig option [jejb: compile and testing fixes] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | Merge branch 'fixes' into for-nextJames Bottomley2011-02-10
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| | * [PARISC] fix per-cpu flag problem in the cpu affinity checkersThomas Gleixner2011-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | The CHECK_IRQ_PER_CPU is wrong, it should be checking irq_to_desc(irq)->status not just irq. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| * | Merge branch 'tmpalias-flush' into for-nextJames Bottomley2011-02-10
| |\ \ | | |/ | |/|
| | * eliminate special FLUSH flag from page tableJames Bottomley2011-01-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | This was used to flush a region even if the page table entry had been cleared. In theory this was never necessary, but now we've switched to alias based flushing, the whole set of code associated with it can be dumped. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| | * parisc: flush pages through tmpalias spaceJames Bottomley2011-01-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel has an 8M tmpailas space (originally designed for copying and clearing pages but now only used for clearing). The idea is to place zeros into the cache above a physical page rather than into the physical page and flush the cache, because often the zeros end up being replaced quickly anyway. We can also use the tmpalias space for flushing a page. The difference here is that we have to do tmpalias processing in the non access data and instruction traps. The principle is the same: as long as we know the physical address and have a virtual address congruent to the real one, the flush will be effective. In order to use the tmpalias space, the icache miss path has to be enhanced to check for the alias region to make the fic instruction effective. Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* | | Merge branch 'for-2.6.39' of ↵Linus Torvalds2011-03-16
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support percpu: Generic support for this_cpu_cmpxchg_double() alpha: use L1_CACHE_BYTES for cacheline size in the linker script percpu: align percpu readmostly subsection to cacheline Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the percpu alignment having changed ("x86: Reduce back the alignment of the per-CPU data section")
| * | | percpu: align percpu readmostly subsection to cachelineTejun Heo2011-01-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
* | | | parisc: Switch do_timer() to xtime_update()Torben Hohn2011-01-31
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xtime_update() takes the xtime_lock itself. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: hch@infradead.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: yong.zhang0@gmail.com LKML-Reference: <20110127150017.23248.22559.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | console: rename acquire/release_console_sem() to console_lock/unlock()Torben Hohn2011-01-25
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The -rt patches change the console_semaphore to console_mutex. As a result, a quite large chunk of the patches changes all acquire/release_console_sem() to acquire/release_console_mutex() This commit makes things use more neutral function names which dont make implications about the underlying lock. The only real change is the return value of console_trylock which is inverted from try_acquire_console_sem() This patch also paves the way to switching console_sem from a semaphore to a mutex. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert] Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: Thomas Gleixner <tglx@tglx.de> Cc: Greg KH <gregkh@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* / parisc : Remove broken line wrapping handling pdc_iodc_print()Guy Martin2011-01-15
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the broken line wrapping handling in pdc_iodc_print(). It is broken in 3 ways : - It doesn't keep track of the current screen position, it just assumes that the new buffer will be printed at the begining of the screen. - It doesn't take in account that non printable characters won't increase the current position on the screen. - And last but not least, it triggers a kernel panic if a backspace is the first char in the provided buffer : Backtrace: [<0000000040128ec4>] pdc_console_write+0x44/0x78 [<0000000040128f18>] pdc_console_tty_write+0x20/0x38 [<000000004032f1ac>] n_tty_write+0x2a4/0x550 [<000000004032b158>] tty_write+0x1e0/0x2d8 [<00000000401bb420>] vfs_write+0xb8/0x188 [<00000000401bb630>] sys_write+0x68/0xb8 [<0000000040104eb8>] syscall_exit+0x0/0x14 Most terminals handle the line wrapping just fine. I've confirmed that it works correctly on a C8000 with both vga and serial output. Signed-off-by: Guy Martin <gmsoft@tuxicoman.be> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* Merge branch 'tty-next' of ↵Linus Torvalds2011-01-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 * 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits) serial: apbuart: Fixup apbuart_console_init() TTY: Add tty ioctl to figure device node of the system console. tty: add 'active' sysfs attribute to tty0 and console device drivers: serial: apbuart: Handle OF failures gracefully Serial: Avoid unbalanced IRQ wake disable during resume tty: fix typos/errors in tty_driver.h comments pch_uart : fix warnings for 64bit compile 8250: fix uninitialized FIFOs ip2: fix compiler warning on ip2main_pci_tbl specialix: fix compiler warning on specialix_pci_tbl rocket: fix compiler warning on rocket_pci_ids 8250: add a UPIO_DWAPB32 for 32 bit accesses 8250: use container_of() instead of casting serial: omap-serial: Add support for kernel debugger serial: fix pch_uart kconfig & build drivers: char: hvc: add arm JTAG DCC console support RS485 documentation: add 16C950 UART description serial: ifx6x60: fix memory leak serial: ifx6x60: free IRQ on error Serial: EG20T: add PCH_UART driver ... Fixed up conflicts in drivers/serial/apbuart.c with evil merge that makes the code look fairly sane (unlike either side).
| * parisc: cleanup console handlingJiri Slaby2010-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * use newly added for_each_console for iterating consoles * add proper console locking * do not initialize tmp twice * no need to declare console_drivers, it's already done in console.h Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: linux-parisc@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | parisc: convert the rest of the irq handlers to simple/percpuJames Bottomley2010-12-04
| | | | | | | | | | | | | | | | | | | | | | | | The generic conversion eliminates the spurious no_ack and no_end routines, converts all the cascaded handlers to handle_simple_irq() and makes iosapic use a modified handle_percpu_irq() to become the same as the CPU irq's. This isn't an essential change, but it eliminates the mask/unmask overhead of handle_level_irq(). Signed-off-by: James Bottomley <James.Bottomley@suse.de> Tested-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
* | parisc: fix dino/gsc interruptsJames Bottomley2010-12-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The essential problem we're currently having is that dino (and gsc) is a cascaded CPU interrupt. Under the old __do_IRQ() handler, our CPU interrupts basically did an ack followed by an end. In the new scheme, we replaced them with level handlers which do a mask, an ack and then an unmask (but no end). Instead, with the renaming of end to eoi, we actually want to call the percpu flow handlers, because they actually have all the characteristics we want. This patch does the conversion and gets my C360 booting again. Signed-off-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
* | parisc: remove redundant initialization in sigsegv path of sys_rt_sigreturnKyle McMartin2010-11-29
| | | | | | | | | | Noticed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Kyle McMartin <kyle@redhat.com>
* | BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann2010-11-17
|/ | | | | | | | | | The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'next' of ↵Linus Torvalds2010-10-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: parisc: add tty driver to PDC console drivers/parisc/iosapic.c: Remove unnecessary kzalloc cast parisc: remove homegrown L1_CACHE_ALIGN macro arch/parisc: Removing undead ifdef CONFIG_PA20 parisc: unwind - optimise linked-list searches for modules parisc: change to new flag variable drivers/char/agp/parisc-agp.c: eliminate memory leak parisc: kill __do_IRQ parisc: convert eisa interrupts to flow handlers parisc: convert gsc and dino pci interrupts to flow handlers parisc: convert suckyio interrupts to flow handlers parisc: convert iosapic interrupts to proper flow handlers parisc: convert cpu interrupts to proper flow handlers parisc: lay groundwork for killing __do_IRQ parisc: add prlimit64 syscall parisc: squelch warning when using dev_get_stats
| * parisc: add tty driver to PDC consoleGuy Martin2010-10-21
| | | | | | | | | | | | | | | | | | | | | | This patch adds a tty driver to the PDC console. It allows the use of ports not supported by linux as a console (e.g. serial port on C8000.) The tty driver will not register the ttyB device if PDC console driver has been unregistered. This happens when the early printk console is disabled as it has not been selected as the primary console. Signed-off-by: Guy Martin <gmsoft@tuxicoman.be> Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * arch/parisc: Removing undead ifdef CONFIG_PA20Christian Dietrich2010-10-21
| | | | | | | | | | | | | | | | The CONFIG_PA20 ifdef isn't necessary at this point, because it is checked in an outer ifdef level already and has no effect here. Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: unwind - optimise linked-list searches for modulesPhil Carmody2010-10-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Having many dozens of modules, the searches down the linked list of sections would dominate the lookup time, dwarfing any savings from the binary search within the section. A simple move-to-front optimisation exploits the commonality of the code paths taken, and in simple real-world tests on other architectures reduced the number of steps in the search to barely more than 1. Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: kill __do_IRQKyle McMartin2010-10-14
| | | | | | | | Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: convert iosapic interrupts to proper flow handlersKyle McMartin2010-10-14
| | | | | | | | | | | | | | Shift the ->end call (cpu eoi) from __do_IRQ into our unmask handler. Also nuke some redundant code. Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: convert cpu interrupts to proper flow handlersKyle McMartin2010-10-14
| | | | | | | | | | | | | | Only major change is renaming functions to match the conventions expected by the generic irq code. Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: lay groundwork for killing __do_IRQKyle McMartin2010-10-14
| | | | | | | | | | | | | | | | Use proper accessors and handlers for generic irq cleanups. We just call back into __do_IRQ through desc->handler now, and remove the explicit calls. Signed-off-by: Kyle McMartin <kyle@redhat.com>
| * parisc: add prlimit64 syscallKyle McMartin2010-10-13
| | | | | | | | Signed-off-by: Kyle McMartin <kyle@redhat.com>
* | ptrace: cleanup arch_ptrace() on pariscNamhyung Kim2010-10-27
| | | | | | | | | | | | | | | | | | | | | | Add missing __user markup on the argument of put_user(). Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ptrace: change signature of arch_ptrace()Namhyung Kim2010-10-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-22
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: BKL: introduce CONFIG_BKL. dabusb: remove the BKL sunrpc: remove the big kernel lock init/main.c: remove BKL notations blktrace: remove the big kernel lock rtmutex-tester: make it build without BKL dvb-core: kill the big kernel lock dvb/bt8xx: kill the big kernel lock tlclk: remove big kernel lock fix rawctl compat ioctls breakage on amd64 and itanic uml: kill big kernel lock parisc: remove big kernel lock cris: autoconvert trivial BKL users alpha: kill big kernel lock isapnp: BKL removal s390/block: kill the big kernel lock hpet: kill BKL, add compat_ioctl
| * parisc: remove big kernel lockArnd Bergmann2010-10-16
| | | | | | | | | | | | | | | | | | | | | | The parisc version of the perf code is sufficiently protected by its own spinlock, no need to use the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: linux-parisc@vger.kernel.org
* | modules: Fix module_bug_list list corruption raceLinus Torvalds2010-10-05
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With all the recent module loading cleanups, we've minimized the code that sits under module_mutex, fixing various deadlocks and making it possible to do most of the module loading in parallel. However, that whole conversion totally missed the rather obscure code that adds a new module to the list for BUG() handling. That code was doubly obscure because (a) the code itself lives in lib/bugs.c (for dubious reasons) and (b) it gets called from the architecture-specific "module_finalize()" rather than from generic code. Calling it from arch-specific code makes no sense what-so-ever to begin with, and is now actively wrong since that code isn't protected by the module loading lock any more. So this commit moves the "module_bug_{finalize,cleanup}()" calls away from the arch-specific code, and into the generic code - and in the process protects it with the module_mutex so that the list operations are now safe. Future fixups: - move the module list handling code into kernel/module.c where it belongs. - get rid of 'module_bug_list' and just use the regular list of modules (called 'modules' - imagine that) that we already create and maintain for other reasons. Reported-and-tested-by: Thomas Gleixner <tglx@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Adrian Bunk <bunk@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Make do_execve() take a const filename pointerDavid Howells2010-08-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'sched-core-for-linus' of ↵Linus Torvalds2010-08-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits) sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug sched: No need for bootmem special cases sched: Revert nohz_ratelimit() for now sched: Reduce update_group_power() calls sched: Update rq->clock for nohz balanced cpus sched: Fix spelling of sibling sched, cpuset: Drop __cpuexit from cpu hotplug callbacks sched: Fix the racy usage of thread_group_cputimer() in fastpath_timer_check() sched: run_posix_cpu_timers: Don't check ->exit_state, use lock_task_sighand() sched: thread_group_cputime: Simplify, document the "alive" check sched: Remove the obsolete exit_state/signal hacks sched: task_tick_rt: Remove the obsolete ->signal != NULL check sched: __sched_setscheduler: Read the RLIMIT_RTPRIO value lockless sched: Fix comments to make them DocBook happy sched: Fix fix_small_capacity powerpc: Exclude arch_sd_sibiling_asym_packing() on UP powerpc: Enable asymmetric SMT scheduling on POWER7 sched: Add asymmetric group packing option for sibling domain sched: Fix capacity calculations for SMT4 sched: Change nohz idle load balancing logic to push model ...
| * sched_clock: Add local_clock() API and improve documentationPeter Zijlstra2010-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For people who otherwise get to write: cpu_clock(smp_processor_id()), there is now: local_clock(). Also, as per suggestion from Andrew, provide some documentation on the various clock interfaces, and minimize the unsigned long long vs u64 mess. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jens Axboe <jaxboe@fusionio.com> LKML-Reference: <1275052414.1645.52.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | parisc: pass through '\t' to early (iodc) consoleKyle McMartin2010-08-04
|/ | | | | | | | | | | | | The firmware handles '\t' internally, so stop trying to emulate it (which, incidentally, had a bug in it.) Fixes a really weird hang at bootup in rcu_bootup_announce, which, as far as I can tell, is the first printk in the core kernel to use a tab as the first character. Cc: stable@kernel.org Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-35' of git://repo.or.cz/linux-kbuildLinus Torvalds2010-06-01
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-35' of git://repo.or.cz/linux-kbuild: (81 commits) kbuild: Revert part of e8d400a to resolve a conflict kbuild: Fix checking of scm-identifier variable gconfig: add support to show hidden options that have prompts menuconfig: add support to show hidden options which have prompts gconfig: remove show_debug option gconfig: remove dbg_print_ptype() and dbg_print_stype() kconfig: fix zconfdump() kconfig: some small fixes add random binaries to .gitignore kbuild: Include gen_initramfs_list.sh and the file list in the .d file kconfig: recalc symbol value before showing search results .gitignore: ignore *.lzo files headerdep: perlcritic warning scripts/Makefile.lib: Align the output of LZO kbuild: Generate modules.builtin in make modules_install Revert "kbuild: specify absolute paths for cscope" kbuild: Do not unnecessarily regenerate modules.builtin headers_install: use local file handles headers_check: fix perl warnings export_report: fix perl warnings ...
| * Rename .data.lock_aligned to .data..lock_aligned.Denys Vlasenko2010-03-03
| | | | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * Rename .data.vmpages and .data.vm0.XXX to .data..vmpages and .data..vm0.XXX.Denys Vlasenko2010-03-03
| | | | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
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