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2009-06-11kmemleak: Simple testing module for kmemleakCatalin Marinas
This patch adds a loadable module that deliberately leaks memory. It is used for testing various memory leaking scenarios. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Enable the building of the memory leak detectorCatalin Marinas
This patch adds the Kconfig.debug and Makefile entries needed for building kmemleak into the kernel. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Remove some of the kmemleak false positivesCatalin Marinas
There are allocations for which the main pointer cannot be found but they are not memory leaks. This patch fixes some of them. For more information on false positives, see Documentation/kmemleak.txt. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Add modules supportCatalin Marinas
This patch handles the kmemleak operations needed for modules loading so that memory allocations from inside a module are properly tracked. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Add kmemleak_alloc callback from alloc_large_system_hashCatalin Marinas
The alloc_large_system_hash function is called from various places in the kernel and it contains pointers to other allocated structures. It therefore needs to be traced by kmemleak. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Add the vmalloc memory allocation/freeing hooksCatalin Marinas
This patch adds the callbacks to kmemleak_(alloc|free) functions from vmalloc/vfree. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Add the slub memory allocation/freeing hooksCatalin Marinas
This patch adds the callbacks to kmemleak_(alloc|free) functions from the slub allocator. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-06-11kmemleak: Add the slob memory allocation/freeing hooksCatalin Marinas
This patch adds the callbacks to kmemleak_(alloc|free) functions from the slob allocator. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Matt Mackall <mpm@selenic.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-06-11kmemleak: Add the slab memory allocation/freeing hooksCatalin Marinas
This patch adds the callbacks to kmemleak_(alloc|free) functions from the slab allocator. The patch also adds the SLAB_NOLEAKTRACE flag to avoid recursive calls to kmemleak when it allocates its own data structures. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-06-11kmemleak: Add documentation on the memory leak detectorCatalin Marinas
This patch adds the Documentation/kmemleak.txt file with some information about how kmemleak works. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-06-11kmemleak: Add the base supportCatalin Marinas
This patch adds the base support for the kernel memory leak detector. It traces the memory allocation/freeing in a way similar to the Boehm's conservative garbage collector, the difference being that the unreferenced objects are not freed but only shown in /sys/kernel/debug/kmemleak. Enabling this feature introduces an overhead to memory allocations. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2009-06-11Merge branches 'frv' and 'mn10300'Linus Torvalds
* frv: FRV: Implement new-style ptrace FRV: Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue FRV: Implement TIF_NOTIFY_RESUME FRV: Remove in-kernel strace code FRV: BUG to BUG_ON changes FRV: bitops: Change the bitmap index from int to unsigned long * mn10300: MN10300: Add utrace/tracehooks support MN10300: Don't set the dirty bit in the DTLB entries in the TLB-miss handler
2009-06-11MN10300: Add utrace/tracehooks supportDavid Howells
Add utrace/tracehooks support to MN10300. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11MN10300: Don't set the dirty bit in the DTLB entries in the TLB-miss handlerDavid Howells
Remove the special handling for the Data TLB entry dirty bit in the TLB-miss handler. As the code stands, all that it does is to cause us to take a second data address exception to set the dirty bit. Instead, we can just let pte_mkdirty() set the bit. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: Implement new-style ptraceDavid Howells
Implement the new-style ptrace for FRV, including adding appropriate tracehooks. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologueDavid Howells
Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue in FRV's entry.S. This was originally for debugging stuff and should have been removed a long time ago. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: Implement TIF_NOTIFY_RESUMEDavid Howells
Implement the TIF_NOTIFY_RESUME thread flag, making it call do_notify_resume() which then clears it. This will be made use of later by tracehooks in the new-style ptrace implementation Also discard TIF_IRET as that's not used by FRV. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: Remove in-kernel strace codeDavid Howells
Remove in-kernel strace code from the FRV arch as it's not really needed any more. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: BUG to BUG_ON changesStoyan Gaydarov
Change some BUG()'s to BUG_ON()'s. Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11FRV: bitops: Change the bitmap index from int to unsigned longJustin Chen
Change the index to unsigned long in all bitops for [frv] Signed-off-by: Justin Chen <justin.chen@hp.com> Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11Merge branch 'serial-from-alan'Linus Torvalds
* serial-from-alan: (79 commits) moxa: prevent opening unavailable ports imx: serial: use tty_encode_baud_rate to set true rate imx: serial: add IrDA support to serial driver imx: serial: use rational library function lib: isolate rational fractions helper function imx: serial: handle initialisation failure correctly imx: serial: be sure to stop xmit upon shutdown imx: serial: notify higher layers in case xmit IRQ was not called imx: serial: fix one bit field type imx: serial: fix whitespaces (no changes in functionality) tty: use prepare/finish_wait tty: remove sleep_on sierra: driver interface blacklisting sierra: driver urb handling improvements tty: resolve some sierra breakage timbuart: Fix the termios logic serial: Added Timberdale UART driver tty: Add URL for ttydev queue devpts: unregister the file system on error tty: Untangle termios and mm mutex dependencies ...
2009-06-11Merge branch 'linus' into perfcounters/coreIngo Molnar
Conflicts: arch/x86/kernel/irqinit.c arch/x86/kernel/irqinit_64.c arch/x86/kernel/traps.c arch/x86/mm/fault.c include/linux/sched.h kernel/exit.c
2009-06-11perf_counter: Turn off by defaultIngo Molnar
Perfcounters were enabled by default to help testing - but now that we are submitting it upstream, make it default-disabled. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11perf_counter: Add counter->id to the throttle eventPeter Zijlstra
So as to be able to distuinguish between multiple counters. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11perf_counter: Better align codeIngo Molnar
Whitespace and comment bits. Also update copyrights. [ Impact: cleanup ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission>
2009-06-11perf_counter: Rename L2 to LL cachePeter Zijlstra
The top (fastest) and last level (biggest) caches are the most interesting ones, performance wise. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> [ Fixed the Nehalem LL table to LLC Reference/Miss events ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11perf_counter: Standardize event namesPeter Zijlstra
Pure renames only, to PERF_COUNT_HW_* and PERF_COUNT_SW_*. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11perf_counter: Rename enumsPeter Zijlstra
Rename the perf enums to be in the 'perf_' namespace and strictly enumerate the ABI bits. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11moxa: prevent opening unavailable portsDirk Eibach
In moxa.c there are 32 minor numbers reserved for each device. The number of ports actually available per device is stored in moxa_board_conf->numPorts. This number is not considered in moxa_open(). Opening a port that is not available results in a kernel oops. This patch adds a test to moxa_open() that prevents opening unavailable ports. Signed-off-by: Dirk Eibach <eibach@gdsys.de> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: use tty_encode_baud_rate to set true rateOskar Schirmer
real baud rate may be different from the one requested. for upper layers, set the nearest value to the real rate in favour of the rate previously requested. Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: add IrDA support to serial driverFabian Godehardt
Using the iMX serial driver with an IrDA device needs extra peripheral settings and specific timing depending on the transmitter circuitry used. Signed-off-by: Fabian Godehardt <fg@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: use rational library functionOskar Schirmer
for calculation of numerator and denominator used in baud rate setting, use generic library function for optimum settings. Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11lib: isolate rational fractions helper functionOskar Schirmer
Provide a helper function to determine optimum numerator denominator value pairs taking into account restricted register size. Useful especially with PLL and other clock configurations. Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: handle initialisation failure correctlyDaniel Glöckner
correctly de-initialise device when setting up failed, call to pdata->exit() was missing. Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: be sure to stop xmit upon shutdownFabian Godehardt
needed to avoid continued transmission by hardware while software already shuts down, which might cause dangling characters to show up in hardware queues when restarting the device. Signed-off-by: Fabian Godehardt <fg@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: notify higher layers in case xmit IRQ was not calledFabian Godehardt
upper layers, namely line discipline, need to be notified when transmission of more data is possible. For spurious cases, where IRQ handling does not supply notification for sure, it is given additionally here, when data has just been transmitted and space in the buffer will most probably be available. Signed-off-by: Fabian Godehardt <fg@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: fix one bit field typeDaniel Glöckner
"have_rtscts" is assigned 1, while it is declared int:1, two's complement, which can hold 0 and -1 only. The code works, as the upper bits are cut off, and tests are done against 0 only. Nonetheless, correctly declaring the bit field as unsigned int:1 renders the code more robust. Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11imx: serial: fix whitespaces (no changes in functionality)Oskar Schirmer
Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: use prepare/finish_waitJiri Slaby
Use prepare_to_wait and finish_wait instead of add_wait_queue and remove_wait_queue. This avoids us setting a task state. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: remove sleep_onJiri Slaby
Use wait_event instead of sleep_on in tty_block_til_ready. Wait for ASYNC_CLOSING flag being 0. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11sierra: driver interface blacklistingElina Pasheva
Interface blacklisting is necessary for non-serial interfaces that are handled by a different driver. The interface blacklisting is implemented in sierra driver per device. Each device in need of a blacklist has a static information array kept in the driver. This array contains the interface numbers that are blacklisted. The pointer for each blacklist array and the length of that blacklist are 'bundled' in data structure sierra_iface_info. A pointer to this information is set in id_table when the device is added to the id_table. The following is summary of changes we have made to sierra.c driver in this patch dealing with interface blacklisting support: - Added data structure sierra_iface_info and function is_blacklisted() to support blacklisting - Modified sierra_probe() to handle blacklisted interfaces accordingly - Improved comments in id_table - Added new device in id_table with blacklist interface support Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11sierra: driver urb handling improvementsElina Pasheva
[Folded from eight patches into one as the original set according to the author "All of the patches need to be applied to obtain a working product" so keeping them split seems unhelpful Merge fixes done versus other conflicting changes and moved the spin_lock_init from open to setup time -- Alan] Summary of the changes and code re-organization in this patch: - The memory for urbs is allocated and urbs are submitted only for the active interfaces (instead of pre-allocating these for all interfaces). This will save memory especially in the case of using composite devices. - The code has been re-organized and functionality has been extracted from sierra_startup(), sierra_shutdown(), sierra_open(), sierra_close() and added in helper functions sierra_release_urb(), sierra_stop_rx_urbs(), sierra_submit_rx_urbs() and sierra_setup_urb() - Added function sierra_release_urb() to free an urb and its transfer buffer. - Removed unecessary include file reference and comment. - Added function sierra_stop_rx_urbs() that takes care of the release of receive and interrupt urbs. This function is to be called by sierra_close() whenever an interface is de-activated. - Added new function sierra_submit_rx_urbs() that handles the submission of receive urbs and interrupt urbs (if any) during the interface activation. This function is to be called by sierra_open(). Added a second parameter to pass the memory allocation (as suggested by Oliver Neukum) so that this function can be used in post_reset() and resume(). - Added new function sierra_setup_urb() that contains the functionality to allocate an urb, fill bulk urb using the supplied memory allocation flag and release urb upon error. Added parameter so that the caller pass the memory allocation flag for flexibility. - Moved sierra_close() before sierra_open() to resolve dependencies introduced by the code reorganization. - Modified sierra_close() to call sierra_stop_rx_urbs() and sierra_release_urb() functions added in previous patch. - Modified sierra_open() to call sierra_setup_urb() and sierra_submit_rx_urbs() functions; note urbs are allocated and submitted for each activated interface. - Modified sierra_startup() so that allocation of urbs happens whenever an interface is activated (urb allocation is moved to sierra_open()). - Modified sierra_shutdown() so that urbs are freed whenever an interface is de-activated (urb freeing moved to sierra_close() as shown in previous patch from the series) - Removed unecessary data structure from sierra_port_private_data - Suppress an entry in logs by not re-submitting an urb when usb_submit_urb() returns -EPERM, as this shows that usb_kill_urb() is running (as suggested by Oliver Neukum) Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Alan Cox <alan.cox@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: resolve some sierra breakageAlan Cox
The various merges into the sierra driver inadvertently undid commit 212b8f0c3f5a2280bfa1d6ab13a6fe98552becaa by Elina Pasheva <epasheva@sierrawireless.com>. Put it back so the OBEX port works again. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11timbuart: Fix the termios logicAlan Cox
The driver only handles speeds but it fails to return the current values for the hardware features it does not support. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11serial: Added Timberdale UART driverRichard Röjfors
Driver for the UART found in the Timberdale FPGA Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: Add URL for ttydev queueAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11devpts: unregister the file system on errorAlan Cox
Closes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13429 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: Untangle termios and mm mutex dependenciesAlan Cox
Although this doesn't cause any problems it could potentially do so for future mmap using devices. No real work is needed to sort it out so untangle it before it causes problems Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: bfin_jtag_comm: emulate a TTY over the Blackfin EMUDAT/JTAG interfaceMike Frysinger
The Blackfin JTAG interface has a 4 byte generic data field (EMUDAT). With a little creative thinking, we can turn this into a TTY device. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11ftdi_sio: don't override modem bitsAlan Cox
The new open/close logic handles DTR and friends, so don't do it in our own open routine as well. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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