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* Merge branch 'for-linus' of ↵Linus Torvalds2015-02-215-120/+40
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull more input updates from Dmitry Torokhov: "The second round of updates for the input subsystem. Updates to ALPS an bfin_roraty drivers and a couple oother fixups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: psmouse - use IS_ENABLED instead of homegrown code Input: bfin_rotary - introduce open and close methods Input: bfin_rotary - convert to use managed resources Input: bfin_rotary - use generic IO functions Input: bfin_rotary - move pin lists into into platform data Input: bfin_rotary - move platform header to linux/platform_data Input: bfin_rotary - mark suspend and resume code as __maybe_unused Input: bfin_rotary - fix potential oops in interrupt handler Input: ALPS - move v7 packet info to Documentation and v6 packet info Input: ALPS - fix confusing comment in protocol data Input: ALPS - do not mix trackstick and external PS/2 mouse data Input: ALPS - fix trackstick detection on some Dell Latitudes Input: ALPS - consolidate setting protocol parameters Input: ALPS - split protocol data from model info Input: ALPS - make Rushmore a separate protocol Input: ALPS - renumber protocol numbers Input: adi - remove an unnecessary check Input: pxa27x_keypad - remove an unneeded NULL check Input: soc_button_array - use "Windows" key for "Home"
| * Input: bfin_rotary - use generic IO functionsSonic Zhang2015-02-154-0/+20
| | | | | | | | | | | | | | | | | | Instead of using arch-specific accessors remap rotary register physical address into kernel space in probe and use standard readw and writew to access rotary MMRs. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * Input: bfin_rotary - move pin lists into into platform dataSonic Zhang2015-02-152-0/+16
| | | | | | | | | | | | | | | | | | | | Newer Blackfin boards use pinctrl API to manage pins and the legacy peripherial lists are not useful on them. Let's move pin lists into platform data so older boards can still use them and newer boards can use the modern API. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * Input: bfin_rotary - move platform header to linux/platform_dataSonic Zhang2015-02-155-120/+4
| | | | | | | | | | | | | | | | The platform data definition of the rotary driver should be generic for all architectures. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* | Merge tag 'asm-generic-for-linus' of ↵Linus Torvalds2015-02-181-16/+16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic uaccess.h cleanup from Arnd Bergmann: "Like in 3.19, I once more have a multi-stage cleanup for one asm-generic header file, this time the work was done by Michael Tsirkin and cleans up the uaccess.h file in asm-generic, as well as all architectures for which the respective maintainers did not pick up his patches directly" * tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (37 commits) sparc32: nocheck uaccess coding style tweaks sparc64: nocheck uaccess coding style tweaks xtensa: macro whitespace fixes sh: macro whitespace fixes parisc: macro whitespace fixes m68k: macro whitespace fixes m32r: macro whitespace fixes frv: macro whitespace fixes cris: macro whitespace fixes avr32: macro whitespace fixes arm64: macro whitespace fixes arm: macro whitespace fixes alpha: macro whitespace fixes blackfin: macro whitespace fixes sparc64: uaccess_64 macro whitespace fixes sparc32: uaccess_32 macro whitespace fixes avr32: whitespace fix sh: fix put_user sparse errors metag: fix put_user sparse errors ia64: fix put_user sparse errors ...
| * \ Merge tag 'uaccess_for_upstream' of ↵Arnd Bergmann2015-01-141-16/+16
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost into asm-generic Merge "uaccess: fix sparse warning on get/put_user for bitwise types" from Michael S. Tsirkin: At the moment, if p and x are both tagged as bitwise types, some of get_user(x, p), put_user(x, p), __get_user(x, p), __put_user(x, p) might produce a sparse warning on many architectures. This is a false positive: *p on these architectures is loaded into long (typically using asm), then cast back to typeof(*p). When typeof(*p) is a bitwise type (which is uncommon), such a cast needs __force, otherwise sparse produces a warning. Some architectures already have the __force tag, add it where it's missing. I verified that adding these __force casts does not supress any useful warnings. Specifically, vhost wants to read/write bitwise types in userspace memory using get_user/put_user. At the moment this triggers sparse errors, since the value is passed through an integer. For example: __le32 __user *p; __u32 x; both put_user(x, p); and get_user(x, p); should be safe, but produce warnings on some architectures. While there, I noticed that a bunch of architectures violated coding style rules within uaccess macros. Included patches to fix them up. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> * tag 'uaccess_for_upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (37 commits) sparc32: nocheck uaccess coding style tweaks sparc64: nocheck uaccess coding style tweaks xtensa: macro whitespace fixes sh: macro whitespace fixes parisc: macro whitespace fixes m68k: macro whitespace fixes m32r: macro whitespace fixes frv: macro whitespace fixes cris: macro whitespace fixes avr32: macro whitespace fixes arm64: macro whitespace fixes arm: macro whitespace fixes alpha: macro whitespace fixes blackfin: macro whitespace fixes sparc64: uaccess_64 macro whitespace fixes sparc32: uaccess_32 macro whitespace fixes avr32: whitespace fix sh: fix put_user sparse errors metag: fix put_user sparse errors ia64: fix put_user sparse errors ...
| | * blackfin: macro whitespace fixesMichael S. Tsirkin2015-01-131-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While working on arch/blackfin/include/asm/uaccess.h, I noticed that some macros within this header are made harder to read because they violate a coding style rule: space is missing after comma. Fix it up. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| | * blackfin: fix put_user sparse errorsMichael S. Tsirkin2015-01-131-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | virtio wants to write bitwise types to userspace using put_user. At the moment this triggers sparse errors, since the value is passed through an integer. For example: __le32 __user *p; __le32 x; put_user(x, p); is safe, but currently triggers a sparse warning. Fix that up using __force. Note: this does not suppress any useful sparse checks since caller assigns x to typeof(*p), which in turn forces all the necessary type checks. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| | * blackfin/uaccess: fix sparse errorsMichael S. Tsirkin2015-01-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | virtio wants to read bitwise types from userspace using get_user. At the moment this triggers sparse errors, since the value is passed through an integer. Fix that up using __force. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Steven Miao <realmz6@gmail.com>
* | | all arches, signal: move restart_block to struct task_structAndy Lutomirski2015-02-122-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an attacker can cause a controlled kernel stack overflow, overwriting the restart block is a very juicy exploit target. This is because the restart_block is held in the same memory allocation as the kernel stack. Moving the restart block to struct task_struct prevents this exploit by making the restart_block harder to locate. Note that there are other fields in thread_info that are also easy targets, at least on some architectures. It's also a decent simplification, since the restart code is more or less identical on all architectures. [james.hogan@imgtec.com: metag: align thread_info::supervisor_stack] Signed-off-by: Andy Lutomirski <luto@amacapital.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: David Miller <davem@davemloft.net> Acked-by: Richard Weinberger <richard@nod.at> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Steven Miao <realmz6@gmail.com> Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2015-02-101-8/+0
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree changes from Jiri Kosina: "Patches from trivial.git that keep the world turning around. Mostly documentation and comment fixes, and a two corner-case code fixes from Alan Cox" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: kexec, Kconfig: spell "architecture" properly mm: fix cleancache debugfs directory path blackfin: mach-common: ints-priority: remove unused function doubletalk: probe failure causes OOPS ARM: cache-l2x0.c: Make it clear that cache-l2x0 handles L310 cache controller msdos_fs.h: fix 'fields' in comment scsi: aic7xxx: fix comment ARM: l2c: fix comment ibmraid: fix writeable attribute with no store method dynamic_debug: fix comment doc: usbmon: fix spelling s/unpriviledged/unprivileged/ x86: init_mem_mapping(): use capital BIOS in comment
| * | | blackfin: mach-common: ints-priority: remove unused functionRickard Strandqvist2015-01-201-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the function bfin_sec_resume() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | blackfin: drop pte_file()Kirill A. Shutemov2015-02-101-5/+0
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Steven Miao <realmz6@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | arch/blackfin/mach-bf533/boards/stamp.c: add linux/delay.hOleg Nesterov2015-01-081-0/+1
| |/ |/| | | | | | | | | | | | | | | | | | | | | build error arch/blackfin/mach-bf533/boards/stamp.c:834:2: error: implicit declaration of function 'mdelay' Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'tty-3.19-rc1' of ↵Linus Torvalds2014-12-141-4/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver updates from Greg KH: "Here's the big tty/serial driver update for 3.19-rc1. There are a number of TTY core changes/fixes in here from Peter Hurley that have all been teted in linux-next for a long time now. There are also the normal serial driver updates as well, full details in the changelog below" * tag 'tty-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (219 commits) serial: pxa: hold port.lock when reporting modem line changes tty-hvsi_lib: Deletion of an unnecessary check before the function call "tty_kref_put" tty: Deletion of unnecessary checks before two function calls n_tty: Fix read_buf race condition, increment read_head after pushing data serial: of-serial: add PM suspend/resume support Revert "serial: of-serial: add PM suspend/resume support" Revert "serial: of-serial: fix up PM ops on no_console_suspend and port type" serial: 8250: don't attempt a trylock if in sysrq serial: core: Add big-endian iotype serial: samsung: use port->fifosize instead of hardcoded values serial: samsung: prefer to use fifosize from driver data serial: samsung: fix style problems serial: samsung: wait for transfer completion before clock disable serial: icom: fix error return code serial: tegra: clean up tty-flag assignments serial: Fix io address assign flow with Fintek PCI-to-UART Product serial: mxs-auart: fix tx_empty against shift register serial: mxs-auart: fix gpio change detection on interrupt serial: mxs-auart: Fix mxs_auart_set_ldisc() serial: 8250_dw: Use 64-bit access for OCTEON. ...
| * | tty: bfin, define inlined structuresJiri Slaby2014-11-251-4/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct bfin_serial_port contains structs circ_buf, timer_list, and work_struct directly (not pointers). This means that these structures have to be defined completely to be inlined in struct bfin_serial_port. So instead of struct declarations, define the structures by including proper headers. They were pulled in by linux/serial_core.h or others until now. But experimenting with circ_buf removal from serial_core, struct circ_buf becomes undefined in bfin_serial: In file included from arch/blackfin/kernel/debug-mmrs.c:21:0: arch/blackfin/include/asm/bfin_serial.h:44:18: error: field 'rx_dma_buf' has incomplete type Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | arch: Cleanup read_barrier_depends() and commentsAlexander Duyck2014-12-111-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is meant to cleanup the handling of read_barrier_depends and smp_read_barrier_depends. In multiple spots in the kernel headers read_barrier_depends is defined as "do {} while (0)", however we then go into the SMP vs non-SMP sections and have the SMP version reference read_barrier_depends, and the non-SMP define it as yet another empty do/while. With this commit I went through and cleaned out the duplicate definitions and reduced the number of definitions down to 2 per header. In addition I moved the 50 line comments for the macro from the x86 and mips headers that defined it as an empty do/while to those that were actually defining the macro, alpha and blackfin. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net, lib: kill arch_fast_hash library bitsDaniel Borkmann2014-12-101-1/+0
|/ | | | | | | | | | | | | | | | | | As there are now no remaining users of arch_fast_hash(), lets kill it entirely. This basically reverts commit 71ae8aac3e19 ("lib: introduce arch optimized hash library") and follow-up work, that is f.e., commit 237217546d44 ("lib: hash: follow-up fixups for arch hash"), commit e3fec2f74f7f ("lib: Add missing arch generic-y entries for asm-generic/hash.h") and last but not least commit 6a02652df511 ("perf tools: Fix include for non x86 architectures"). Cc: Francesco Fusco <fusco@ntop.org> Cc: Thomas Graf <tgraf@suug.ch> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-3.18-consistent-ops' of ↵Linus Torvalds2014-10-154-11/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull percpu consistent-ops changes from Tejun Heo: "Way back, before the current percpu allocator was implemented, static and dynamic percpu memory areas were allocated and handled separately and had their own accessors. The distinction has been gone for many years now; however, the now duplicate two sets of accessors remained with the pointer based ones - this_cpu_*() - evolving various other operations over time. During the process, we also accumulated other inconsistent operations. This pull request contains Christoph's patches to clean up the duplicate accessor situation. __get_cpu_var() uses are replaced with with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr(). Unfortunately, the former sometimes is tricky thanks to C being a bit messy with the distinction between lvalues and pointers, which led to a rather ugly solution for cpumask_var_t involving the introduction of this_cpu_cpumask_var_ptr(). This converts most of the uses but not all. Christoph will follow up with the remaining conversions in this merge window and hopefully remove the obsolete accessors" * 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits) irqchip: Properly fetch the per cpu offset percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write. percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t Revert "powerpc: Replace __get_cpu_var uses" percpu: Remove __this_cpu_ptr clocksource: Replace __this_cpu_ptr with raw_cpu_ptr sparc: Replace __get_cpu_var uses avr32: Replace __get_cpu_var with __this_cpu_write blackfin: Replace __get_cpu_var uses tile: Use this_cpu_ptr() for hardware counters tile: Replace __get_cpu_var uses powerpc: Replace __get_cpu_var uses alpha: Replace __get_cpu_var ia64: Replace __get_cpu_var uses s390: cio driver &__get_cpu_var replacements s390: Replace __get_cpu_var uses mips: Replace __get_cpu_var uses MIPS: Replace __get_cpu_var uses in FPU emulator. arm: Replace __this_cpu_ptr with raw_cpu_ptr ...
| * blackfin: Replace __get_cpu_var usesChristoph Lameter2014-08-264-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __get_cpu_var() is used for multiple purposes in the kernel source. One of them is address calculation via the form &__get_cpu_var(x). This calculates the address for the instance of the percpu variable of the current processor based on an offset. Other use cases are for storing and retrieving data from the current processors percpu area. __get_cpu_var() can be used as an lvalue when writing data or on the right side of an assignment. __get_cpu_var() is defined as : #define __get_cpu_var(var) (*this_cpu_ptr(&(var))) __get_cpu_var() always only does an address determination. However, store and retrieve operations could use a segment prefix (or global register on other platforms) to avoid the address calculation. this_cpu_write() and this_cpu_read() can directly take an offset into a percpu area and use optimized assembly code to read and write per cpu variables. This patch converts __get_cpu_var into either an explicit address calculation using this_cpu_ptr() or into a use of this_cpu operations that use the offset. Thereby address calculations are avoided and less registers are used when code is generated. At the end of the patch set all uses of __get_cpu_var have been removed so the macro is removed too. The patch set includes passes over all arches as well. Once these operations are used throughout then specialized macros can be defined in non -x86 arches as well in order to optimize per cpu access by f.e. using a global register that may be set to the per cpu base. Transformations done to __get_cpu_var() 1. Determine the address of the percpu instance of the current processor. DEFINE_PER_CPU(int, y); int *x = &__get_cpu_var(y); Converts to int *x = this_cpu_ptr(&y); 2. Same as #1 but this time an array structure is involved. DEFINE_PER_CPU(int, y[20]); int *x = __get_cpu_var(y); Converts to int *x = this_cpu_ptr(y); 3. Retrieve the content of the current processors instance of a per cpu variable. DEFINE_PER_CPU(int, y); int x = __get_cpu_var(y) Converts to int x = __this_cpu_read(y); 4. Retrieve the content of a percpu struct DEFINE_PER_CPU(struct mystruct, y); struct mystruct x = __get_cpu_var(y); Converts to memcpy(&x, this_cpu_ptr(&y), sizeof(x)); 5. Assignment to a per cpu variable DEFINE_PER_CPU(int, y) __get_cpu_var(y) = x; Converts to __this_cpu_write(y, x); 6. Increment/Decrement etc of a per cpu variable DEFINE_PER_CPU(int, y); __get_cpu_var(y)++ Converts to __this_cpu_inc(y) CC: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
* | Merge branch 'for-3.18' of ↵Linus Torvalds2014-10-105-10/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata update from Tejun Heo: "AHCI is getting per-port irq handling and locks for better scalability. The gain is not huge but measureable with multiple high iops devices connected to the same host; however, the value of threaded IRQ handling seems negligible for AHCI and it likely will revert to non-threaded handling soon. Another noteworthy change is George Spelvin's "libata: Un-break ATA blacklist". During 3.17 devel cycle, the libata blacklist glob matching got generalized and rewritten; unfortunately, the patch forgot to swap arguments to match the new match function and ended up breaking blacklist matching completely. It got noticed only a couple days ago so it couldn't make for-3.17-fixes either. :( Other than the above two, nothing too interesting - the usual cleanup churns and device-specific changes" * 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (22 commits) pata_serverworks: disable 64-KB DMA transfers on Broadcom OSB4 IDE Controller libata: Un-break ATA blacklist AHCI: Do not acquire ata_host::lock from single IRQ handler AHCI: Optimize single IRQ interrupt processing AHCI: Do not read HOST_IRQ_STAT reg in multi-MSI mode AHCI: Make few function names more descriptive AHCI: Move host activation code into ahci_host_activate() AHCI: Move ahci_host_activate() function to libahci.c AHCI: Pass SCSI host template as arg to ahci_host_activate() ata: pata_imx: Use the SIMPLE_DEV_PM_OPS() macro AHCI: Cleanup checking of multiple MSIs/SLM modes libata-sff: Fix controllers with no ctl port ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. libata: change ata_<foo>_printk routines to return void ata: qcom: Add device tree bindings information ahci-platform: Bump max number of clocks to 5 ahci: ahci_p5wdh_workaround - constify DMI table libahci_platform: Staticize ahci_platform_<en/dis>able_phys() pata_platform: Remove useless irq_flags field pata_of_platform: Remove "electra-ide" quirk ...
| * | pata_platform: Remove useless irq_flags fieldAlexander Shiyan2014-08-235-10/+5
| |/ | | | | | | | | | | | | | | | | | | IRQ flags can be obtained from resource structure, there are no need to use additional field in the platform_data to store these values. This patch removes this field and convert existing users of this driver to use IRQ flags from the resources. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Tejun Heo <tj@kernel.org>
* | Merge branch 'timers-nohz-for-linus' of ↵Linus Torvalds2014-10-091-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Ingo Molnar: "Main changes: - Fix the deadlock reported by Dave Jones et al - Clean up and fix nohz_full interaction with arch abilities - nohz init code consolidation/cleanup" * 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: nohz: nohz full depends on irq work self IPI support nohz: Consolidate nohz full init code arm64: Tell irq work about self IPI support arm: Tell irq work about self IPI support x86: Tell irq work about self IPI support irq_work: Force raised irq work to run on irq work interrupt irq_work: Introduce arch_irq_work_has_interrupt() nohz: Move nohz full init call to tick init
| * | irq_work: Introduce arch_irq_work_has_interrupt()Peter Zijlstra2014-09-131-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nohz full code needs irq work to trigger its own interrupt so that the subsystem can work even when the tick is stopped. Lets introduce arch_irq_work_has_interrupt() that archs can override to tell about their support for this ability. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2014-10-072-2/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull "trivial tree" updates from Jiri Kosina: "Usual pile from trivial tree everyone is so eagerly waiting for" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Remove MN10300_PROC_MN2WS0038 mei: fix comments treewide: Fix typos in Kconfig kprobes: update jprobe_example.c for do_fork() change Documentation: change "&" to "and" in Documentation/applying-patches.txt Documentation: remove obsolete pcmcia-cs from Changes Documentation: update links in Changes Documentation: Docbook: Fix generated DocBook/kernel-api.xml score: Remove GENERIC_HAS_IOMAP gpio: fix 'CONFIG_GPIO_IRQCHIP' comments tty: doc: Fix grammar in serial/tty dma-debug: modify check_for_stack output treewide: fix errors in printk genirq: fix reference in devm_request_threaded_irq comment treewide: fix synchronize_rcu() in comments checkstack.pl: port to AArch64 doc: queue-sysfs: minor fixes init/do_mounts: better syntax description MIPS: fix comment spelling powerpc/simpleboot: fix comment ...
| * treewide: Fix typos in KconfigMasanari Iida2014-09-261-1/+1
| | | | | | | | | | | | | | | | This patch fix spelling typos found in Kconfig. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * treewide: Fix typo in printkMasanari Iida2014-08-261-1/+1
| | | | | | | | | | | | | | | | | | This patch fix spelling typo in printk within vairous part of the code. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Merge branch 'signal-cleanup' of ↵Linus Torvalds2014-08-091-32/+19
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc Pull arch signal handling cleanup from Richard Weinberger: "This patch series moves all remaining archs to the get_signal(), signal_setup_done() and sigsp() functions. Currently these archs use open coded variants of the said functions. Further, unused parameters get removed from get_signal_to_deliver(), tracehook_signal_handler() and signal_delivered(). At the end of the day we save around 500 lines of code." * 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits) powerpc: Use sigsp() openrisc: Use sigsp() mn10300: Use sigsp() mips: Use sigsp() microblaze: Use sigsp() metag: Use sigsp() m68k: Use sigsp() m32r: Use sigsp() hexagon: Use sigsp() frv: Use sigsp() cris: Use sigsp() c6x: Use sigsp() blackfin: Use sigsp() avr32: Use sigsp() arm64: Use sigsp() arc: Use sigsp() sas_ss_flags: Remove nested ternary if Rip out get_signal_to_deliver() Clean up signal_delivered() tracehook_signal_handler: Remove sig, info, ka and regs ...
| * blackfin: Use sigsp()Richard Weinberger2014-08-061-11/+3
| | | | | | | | | | | | | | Use sigsp() instead of the open coded variant. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Steven Miao <realmz6@gmail.com>
| * blackfin: Use get_signal() signal_setup_done()Richard Weinberger2014-08-061-22/+17
| | | | | | | | | | | | | | | | Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Steven Miao <realmz6@gmail.com>
* | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2014-08-041-8/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf changes from Ingo Molnar: "Kernel side changes: - Consolidate the PMU interrupt-disabled code amongst architectures (Vince Weaver) - misc fixes Tooling changes (new features, user visible changes): - Add support for pagefault tracing in 'trace', please see multiple examples in the changeset messages (Stanislav Fomichev). - Add pagefault statistics in 'trace' (Stanislav Fomichev) - Add header for columns in 'top' and 'report' TUI browsers (Jiri Olsa) - Add pagefault statistics in 'trace' (Stanislav Fomichev) - Add IO mode into timechart command (Stanislav Fomichev) - Fallback to syscalls:* when raw_syscalls:* is not available in the perl and python perf scripts. (Daniel Bristot de Oliveira) - Add --repeat global option to 'perf bench' to be used in benchmarks such as the existing 'futex' one, that was modified to use it instead of a local option. (Davidlohr Bueso) - Fix fd -> pathname resolution in 'trace', be it using /proc or a vfs_getname probe point. (Arnaldo Carvalho de Melo) - Add suggestion of how to set perf_event_paranoid sysctl, to help non-root users trying tools like 'trace' to get a working environment. (Arnaldo Carvalho de Melo) - Updates from trace-cmd for traceevent plugin_kvm plus args cleanup (Steven Rostedt, Jan Kiszka) - Support S/390 in 'perf kvm stat' (Alexander Yarygin) Tooling infrastructure changes: - Allow reserving a row for header purposes in the hists browser (Arnaldo Carvalho de Melo) - Various fixes and prep work related to supporting Intel PT (Adrian Hunter) - Introduce multiple debug variables control (Jiri Olsa) - Add callchain and additional sample information for python scripts (Joseph Schuchart) - More prep work to support Intel PT: (Adrian Hunter) - Polishing 'script' BTS output - 'inject' can specify --kallsym - VDSO is per machine, not a global var - Expose data addr lookup functions previously private to 'script' - Large mmap fixes in events processing - Include standard stringify macros in power pc code (Sukadev Bhattiprolu) Tooling cleanups: - Convert open coded equivalents to asprintf() (Andy Shevchenko) - Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo) - Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de Melo) - No need to reimplement err() in 'perf bench sched-messaging', drop barf(). (Davidlohr Bueso). - Remove ev_name argument from perf_evsel__hists_browse, can be obtained from the other parameters. (Jiri Olsa) Tooling fixes: - Fix memory leak in the 'sched-messaging' perf bench test. (Davidlohr Bueso) - The -o and -n 'perf bench mem' options are mutually exclusive, emit error when both are specified. (Davidlohr Bueso) - Fix scrollbar refresh row index in the ui browser, problem exposed now that headers will be added and will be allowed to be switched on/off. (Jiri Olsa) - Handle the num array type in python properly (Sebastian Andrzej Siewior) - Fix wrong condition for allocation failure (Jiri Olsa) - Adjust callchain based on DWARF debug info on powerpc (Sukadev Bhattiprolu) - Fix a risk for doing free on uninitialized pointer in traceevent lib (Rickard Strandqvist) - Update attr test with PERF_FLAG_FD_CLOEXEC flag (Jiri Olsa) - Enable close-on-exec flag on perf file descriptor (Yann Droneaud) - Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo) - Event ordering fixes (Jiri Olsa)" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (123 commits) Revert "perf tools: Fix jump label always changing during tracing" perf tools: Fix perf usage string leftover perf: Check permission only for parent tracepoint event perf record: Store PERF_RECORD_FINISHED_ROUND only for nonempty rounds perf record: Always force PERF_RECORD_FINISHED_ROUND event perf inject: Add --kallsyms parameter perf tools: Expose 'addr' functions so they can be reused perf session: Fix accounting of ordered samples queue perf powerpc: Include util/util.h and remove stringify macros perf tools: Fix build on gcc 4.4.7 perf tools: Add thread parameter to vdso__dso_findnew() perf tools: Add dso__type() perf tools: Separate the VDSO map name from the VDSO dso name perf tools: Add vdso__new() perf machine: Fix the lifetime of the VDSO temporary file perf tools: Group VDSO global variables into a structure perf session: Add ability to skip 4GiB or more perf session: Add ability to 'skip' a non-piped event stream perf tools: Pass machine to vdso__dso_findnew() perf tools: Add dso__data_size() ...
| * \ Merge tag 'v3.16-rc7' into perf/core, to merge in the latest fixes before ↵Ingo Molnar2014-07-2814-22/+26
| |\ \ | | |/ | | | | | | | | | | | | applying new changes Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | blackfin, perf: Use common PMU interrupt disabled codeVince Weaver2014-06-181-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for failing a sampling event when no PMU interrupt is available. Signed-off-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150200360.16738@vincent-weaver-1.umelst.maine.edu Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | Merge branch 'locking-core-for-linus' of ↵Linus Torvalds2014-08-041-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: "The main changes in this cycle are: - big rtmutex and futex cleanup and robustification from Thomas Gleixner - mutex optimizations and refinements from Jason Low - arch_mutex_cpu_relax() removal and related cleanups - smaller lockdep tweaks" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) arch, locking: Ciao arch_mutex_cpu_relax() locking/lockdep: Only ask for /proc/lock_stat output when available locking/mutexes: Optimize mutex trylock slowpath locking/mutexes: Try to acquire mutex only if it is unlocked locking/mutexes: Delete the MUTEX_SHOW_NO_WAITER macro locking/mutexes: Correct documentation on mutex optimistic spinning rtmutex: Make the rtmutex tester depend on BROKEN futex: Simplify futex_lock_pi_atomic() and make it more robust futex: Split out the first waiter attachment from lookup_pi_state() futex: Split out the waiter check from lookup_pi_state() futex: Use futex_top_waiter() in lookup_pi_state() futex: Make unlock_pi more robust rtmutex: Avoid pointless requeueing in the deadlock detection chain walk rtmutex: Cleanup deadlock detector debug logic rtmutex: Confine deadlock logic to futex rtmutex: Simplify remove_waiter() rtmutex: Document pi chain walk rtmutex: Clarify the boost/deboost part rtmutex: No need to keep task ref for lock owner check rtmutex: Simplify and document try_to_take_rtmutex() ...
| * | | arch, locking: Ciao arch_mutex_cpu_relax()Davidlohr Bueso2014-07-171-1/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The arch_mutex_cpu_relax() function, introduced by 34b133f, is hacky and ugly. It was added a few years ago to address the fact that common cpu_relax() calls include yielding on s390, and thus impact the optimistic spinning functionality of mutexes. Nowadays we use this function well beyond mutexes: rwsem, qrwlock, mcs and lockref. Since the macro that defines the call is in the mutex header, any users must include mutex.h and the naming is misleading as well. This patch (i) renames the call to cpu_relax_lowlatency ("relax, but only if you can do it with very low latency") and (ii) defines it in each arch's asm/processor.h local header, just like for regular cpu_relax functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax, and thus we can take it out of mutex.h. While this can seem redundant, I believe it is a good choice as it allows us to move out arch specific logic from generic locking primitives and enables future(?) archs to transparently define it, similarly to System Z. Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Anton Blanchard <anton@samba.org> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bharat Bhushan <r65777@freescale.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Joe Perches <joe@perches.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Joseph Myers <joseph@codesourcery.com> Cc: Kees Cook <keescook@chromium.org> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Neuling <mikey@neuling.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Mikael Starvik <starvik@axis.com> Cc: Nicolas Pitre <nico@linaro.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Qiaowei Ren <qiaowei.ren@intel.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Steven Rostedt <srostedt@redhat.com> Cc: Stratos Karafotis <stratosk@semaphore.gr> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Vasily Kulikov <segoon@openwall.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com> Cc: Waiman Long <Waiman.Long@hp.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: adi-buildroot-devel@lists.sourceforge.net Cc: linux390@de.ibm.com Cc: linux-alpha@vger.kernel.org Cc: linux-am33-list@redhat.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: linux-cris-kernel@axis.com Cc: linux-hexagon@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux@lists.openrisc.net Cc: linux-m32r-ja@ml.linux-m32r.org Cc: linux-m32r@ml.linux-m32r.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-metag@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-xtensa@linux-xtensa.org Cc: sparclinux@vger.kernel.org Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | Merge tag 'trace-3.17' of ↵Linus Torvalds2014-08-042-19/+0
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "This pull request has a lot of work done. The main thing is the changes to the ftrace function callback infrastructure. It's introducing a way to allow different functions to call directly different trampolines instead of all calling the same "mcount" one. The only user of this for now is the function graph tracer, which always had a different trampoline, but the function tracer trampoline was called and did basically nothing, and then the function graph tracer trampoline was called. The difference now, is that the function graph tracer trampoline can be called directly if a function is only being traced by the function graph trampoline. If function tracing is also happening on the same function, the old way is still done. The accounting for this takes up more memory when function graph tracing is activated, as it needs to keep track of which functions it uses. I have a new way that wont take as much memory, but it's not ready yet for this merge window, and will have to wait for the next one. Another big change was the removal of the ftrace_start/stop() calls that were used by the suspend/resume code that stopped function tracing when entering into suspend and resume paths. The stop of ftrace was done because there was some function that would crash the system if one called smp_processor_id()! The stop/start was a big hammer to solve the issue at the time, which was when ftrace was first introduced into Linux. Now ftrace has better infrastructure to debug such issues, and I found the problem function and labeled it with "notrace" and function tracing can now safely be activated all the way down into the guts of suspend and resume Other changes include clean ups of uprobe code, clean up of the trace_seq() code, and other various small fixes and clean ups to ftrace and tracing" * tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (57 commits) ftrace: Add warning if tramp hash does not match nr_trampolines ftrace: Fix trampoline hash update check on rec->flags ring-buffer: Use rb_page_size() instead of open coded head_page size ftrace: Rename ftrace_ops field from trampolines to nr_trampolines tracing: Convert local function_graph functions to static ftrace: Do not copy old hash when resetting tracing: let user specify tracing_thresh after selecting function_graph ring-buffer: Always run per-cpu ring buffer resize with schedule_work_on() tracing: Remove function_trace_stop and HAVE_FUNCTION_TRACE_MCOUNT_TEST s390/ftrace: remove check of obsolete variable function_trace_stop arm64, ftrace: Remove check of obsolete variable function_trace_stop Blackfin: ftrace: Remove check of obsolete variable function_trace_stop metag: ftrace: Remove check of obsolete variable function_trace_stop microblaze: ftrace: Remove check of obsolete variable function_trace_stop MIPS: ftrace: Remove check of obsolete variable function_trace_stop parisc: ftrace: Remove check of obsolete variable function_trace_stop sh: ftrace: Remove check of obsolete variable function_trace_stop sparc64,ftrace: Remove check of obsolete variable function_trace_stop tile: ftrace: Remove check of obsolete variable function_trace_stop ftrace: x86: Remove check of obsolete variable function_trace_stop ...
| * | Blackfin: ftrace: Remove check of obsolete variable function_trace_stopSteven Rostedt (Red Hat)2014-07-182-19/+0
| |/ | | | | | | | | | | | | | | | | | | Nothing sets function_trace_stop to disable function tracing anymore. Remove the check for it in the arch code. Link: http://lkml.kernel.org/r/3144266.ziutPk5CNZ@vapier Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | blackfin: vmlinux.lds.S: reserve 32 bytes space at the end of data section ↵Steven Miao2014-07-261-1/+1
| | | | | | | | | | | | | | | | for XIP kernel to collect some undefined section to the end of the data section and avoid section overlap Signed-off-by: Steven Miao <realmz6@gmail.com>
* | defconfig: BF609: update spi config nameSteven Miao2014-07-261-1/+1
| | | | | | | | Signed-off-by: Steven Miao <realmz6@gmail.com>
* | irq: blackfin sec: drop duplicated sec priority setSteven Miao2014-07-261-2/+0
| | | | | | | | Signed-off-by: Steven Miao <realmz6@gmail.com>
* | blackfin: bind different groups of one pinmux function to different state nameSonic Zhang2014-07-262-11/+12
| | | | | | | | | | Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Steven Miao <realmz6@gmail.com>
* | blackfin: fix some bf5xx boards build for missing <linux/gpio.h>Steven Miao2014-07-267-0/+7
| | | | | | | | Signed-off-by: Steven Miao <realmz6@gmail.com>
* | pm: bf609: cleanup smc nor flashSteven Miao2014-07-263-7/+5
|/ | | | | | | drop smc pin state change code, pin state will be saved in pinctrl-adi2 driver cleanup nor flash init/exit for pm suspend/resume Signed-off-by: Steven Miao <realmz6@gmail.com>
* Merge tag 'blackfin-for-linus' of ↵Linus Torvalds2014-06-129-9/+10
|\ | | | | | | | | | | | | | | | | | | | | http://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux Pull blackfin updates from Steven Miao. * tag 'blackfin-for-linus' of http://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux: blackfin: defconfigs: add MTD_SPI_NOR (new dependency for M25P80) Revert "blackfin: dma: current count mmr is read only" bf533: fix build error: add linux/gpio.h
| * blackfin: defconfigs: add MTD_SPI_NOR (new dependency for M25P80)Brian Norris2014-06-127-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | These defconfigs contain the CONFIG_M25P80 symbol, which is now dependent on the MTD_SPI_NOR symbol. Add CONFIG_MTD_SPI_NOR to the relevant defconfigs. At the same time, drop the now-nonexistent CONFIG_MTD_CHAR symbol. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org
| * Revert "blackfin: dma: current count mmr is read only"Steven Miao2014-06-111-0/+2
| | | | | | | | | | | | | | | | curr_x_count/curr_y_count need to be cleared here, keep this workaround This reverts commit dfb02f95f5430e47d0c49adbc4469d08eea38b94. Signed-off-by: Steven Miao <realmz6@gmail.com>
| * bf533: fix build error: add linux/gpio.hSteven Miao2014-06-101-0/+1
| | | | | | | | | | | | | | | | | | | | build error arch/blackfin/mach-bf533/boards/stamp.c: In function ‘stamp_init’: arch/blackfin/mach-bf533/boards/stamp.c:866: error: implicit declaration of function ‘gpio_request’ arch/blackfin/mach-bf533/boards/stamp.c:868: error: implicit declaration of function ‘gpio_direction_output’ arch/blackfin/mach-bf533/boards/stamp.c:869: error: implicit declaration of function ‘gpio_free’ Signed-off-by: Steven Miao <realmz6@gmail.com>
* | blackfin/ptrace: call find_vma with the mmap_sem heldDavidlohr Bueso2014-06-061-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | Performing vma lookups without taking the mm->mmap_sem is asking for trouble. While doing the search, the vma in question can be modified or even removed before returning to the caller. Take the lock (shared) in order to avoid races while iterating through the vmacache and/or rbtree. Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Cc: Steven Miao <realmz6@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'arm64-upstream' of ↵Linus Torvalds2014-06-061-10/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into next Pull arm64 updates from Catalin Marinas: - Optimised assembly string/memory routines (based on the AArch64 Cortex Strings library contributed to glibc but re-licensed under GPLv2) - Optimised crypto algorithms making use of the ARMv8 crypto extensions (together with kernel API for using FPSIMD instructions in interrupt context) - Ftrace support - CPU topology parsing from DT - ESR_EL1 (Exception Syndrome Register) exposed to user space signal handlers for SIGSEGV/SIGBUS (useful to emulation tools like Qemu) - 1GB section linear mapping if applicable - Barriers usage clean-up - Default pgprot clean-up Conflicts as per Catalin. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (57 commits) arm64: kernel: initialize broadcast hrtimer based clock event device arm64: ftrace: Add system call tracepoint arm64: ftrace: Add CALLER_ADDRx macros arm64: ftrace: Add dynamic ftrace support arm64: Add ftrace support ftrace: Add arm64 support to recordmcount arm64: Add 'notrace' attribute to unwind_frame() for ftrace arm64: add __ASSEMBLY__ in asm/insn.h arm64: Fix linker script entry point arm64: lib: Implement optimized string length routines arm64: lib: Implement optimized string compare routines arm64: lib: Implement optimized memcmp routine arm64: lib: Implement optimized memset routine arm64: lib: Implement optimized memmove routine arm64: lib: Implement optimized memcpy routine arm64: defconfig: enable a few more common/useful options in defconfig ftrace: Make CALLER_ADDRx macros more generic arm64: Fix deadlock scenario with smp_send_stop() arm64: Fix machine_shutdown() definition arm64: Support arch_irq_work_raise() via self IPIs ...
| * | ftrace: Make CALLER_ADDRx macros more genericAKASHI Takahiro2014-05-211-10/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most archs with HAVE_ARCH_CALLER_ADDR have pretty much the same definitions of CALLER_ADDRx(n). Instead of duplicating the code for all the archs, define a ftrace_return_address0() and ftrace_return_address(n) that can be overwritten by the archs if they need to do something different. Instead of 7 macros in every arch, we now only have at most 2 (and actually only 1 as ftrace_return_address0() should be the same for all archs). The CALLER_ADDRx(n) will now be defined in linux/ftrace.h and use the ftrace_return_address*(n?) macros. This removes a lot of the duplicate code. Link: http://lkml.kernel.org/p/1400585464-30333-1-git-send-email-takahiro.akashi@linaro.org Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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