- 05 4月, 2011 1 次提交
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由 Jason Baron 提交于
Introduce: static __always_inline bool static_branch(struct jump_label_key *key); instead of the old JUMP_LABEL(key, label) macro. In this way, jump labels become really easy to use: Define: struct jump_label_key jump_key; Can be used as: if (static_branch(&jump_key)) do unlikely code enable/disale via: jump_label_inc(&jump_key); jump_label_dec(&jump_key); that's it! For the jump labels disabled case, the static_branch() becomes an atomic_read(), and jump_label_inc()/dec() are simply atomic_inc(), atomic_dec() operations. We show testing results for this change below. Thanks to H. Peter Anvin for suggesting the 'static_branch()' construct. Since we now require a 'struct jump_label_key *key', we can store a pointer into the jump table addresses. In this way, we can enable/disable jump labels, in basically constant time. This change allows us to completely remove the previous hashtable scheme. Thanks to Peter Zijlstra for this re-write. Testing: I ran a series of 'tbench 20' runs 5 times (with reboots) for 3 configurations, where tracepoints were disabled. jump label configured in avg: 815.6 jump label *not* configured in (using atomic reads) avg: 800.1 jump label *not* configured in (regular reads) avg: 803.4 Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110316212947.GA8792@redhat.com> Signed-off-by: NJason Baron <jbaron@redhat.com> Suggested-by: NH. Peter Anvin <hpa@linux.intel.com> Tested-by: NDavid Daney <ddaney@caviumnetworks.com> Acked-by: NRalf Baechle <ralf@linux-mips.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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- 29 3月, 2011 1 次提交
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由 Randy Dunlap 提交于
Fix new irq-related kernel-doc warnings in 2.6.38: Warning(kernel/irq/manage.c:149): No description found for parameter 'mask' Warning(kernel/irq/manage.c:149): Excess function parameter 'cpumask' description in 'irq_set_affinity' Warning(include/linux/irq.h:161): No description found for parameter 'state_use_accessors' Warning(include/linux/irq.h:161): Excess struct/union/enum/typedef member 'state_use_accessor' description in 'irq_data' Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> LKML-Reference: <20110318093356.b939558d.randy.dunlap@oracle.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 28 3月, 2011 9 次提交
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由 Thomas Gleixner 提交于
Some archs want to prevent the default affinity being set on their chips in the reqeust_irq() path. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Special function for demultiplexing handlers which can be disabled via disable_irq(). Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Last user gone. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
This is a replacment for the cell flow handler which is in the way of cleanups. Must be selected to avoid general bloat. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
We really need these flags for some of the interrupt chips. Move it from internal state to irq_data and provide proper accessors. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: David Daney <ddaney@caviumnetworks.com>
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由 Mattia Dongili 提交于
There is not much use for these events in userspace and handling the events themselves seems to get in the way of the actual activation of the rf devices. The SNC device doesn't expose them already. https://bugzilla.kernel.org/show_bug.cgi?id=15303Signed-off-by: NMattia Dongili <malattia@linux.it> Signed-off-by: NMatthew Garrett <mjg@redhat.com>
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由 Corentin Chary 提交于
These keys are supposed to be handled by any software using the camera (like webKam or cheese...). They can also be used to actually move the camera when possible. Signed-off-by: NCorentin Chary <corentincj@iksaif.net> Signed-off-by: NMatthew Garrett <mjg@redhat.com>
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由 liubo 提交于
For datacow control, the corresponding inode flags are needed. This is for btrfs use. v1->v2: Change FS_COW_FL to another bit due to conflict with the upstream e2fsprogs Signed-off-by: NLiu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: NChris Mason <chris.mason@oracle.com>
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由 Bibek Basu 提交于
To get rid of port expanders, the free GPIOs of ab8500 can be used. There are 42 GPIO pins. Out of which 16 are interrupt capable.This patch implements 16 virtual IRQ mapped to 16 interrupt capable AB8500 GPIOs. Signed-off-by: NBibek Basu <bibek.basu@stericsson.com> Acked-by: NGrant Likely <grant.likely@secretlab.ca> [Renamed header file as per MFD structure] Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
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- 27 3月, 2011 7 次提交
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由 Trond Myklebust 提交于
Now that the inode scalability patches have been merged, it is no longer safe to call igrab() under the inode->i_lock. Now that we no longer call nfs_clear_request() until the nfs_page is being freed, we know that we are always holding a reference to the nfs_open_context, which again holds a reference to the path, and so the inode cannot be freed until the last nfs_page has been removed from the radix tree and freed. We can therefore skip the igrab()/iput() altogether. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 David Daney 提交于
The .irq_cpu_online() and .irq_cpu_offline() functions may need to adjust affinity, but they are called with the descriptor lock held. Create __irq_set_affinity_locked() which is called with the lock held. Make irq_set_affinity() just a wrapper that acquires the lock. [ tglx: Changed the argument to irq_data, added a !desc check and moved the !irq_set_affinity check where it belongs ] Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: ralf@linux-mips.org LKML-Reference: <1301081931-11240-4-git-send-email-ddaney@caviumnetworks.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Add a flag which indicates that the on/offline callback should only be called on enabled interrupts. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 David Daney 提交于
[ tglx: Removed the enabled argument as this is now available in irq_data ] Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: ralf@linux-mips.org LKML-Reference: <1301081931-11240-3-git-send-email-ddaney@caviumnetworks.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Thomas Gleixner 提交于
Some irq_chip implementation require to know the disabled state of the interrupt in certain callbacks. Add a state flag and accessor to irq_data. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 MyungJoo Ham 提交于
This patch enables IRQ handling for MAX8997/8966 chips. Please note that Fuel-Gauge-related IRQs are not implemented in this initial release. The fuel gauge module in MAX8997 is identical to MAX17042, which is already in Linux kernel. In order to use the already-existing MAX17042 driver for fuel gauge module in MAX8997, the main interrupt handler of MAX8997 should relay related interrupts to MAX17042 driver. However, in order to do this, we need to modify MAX17042 driver as well because MAX17042 driver does not have any interrupt handlers for now. We are not going to implement this in this initial release as it is not crucial in basic operations of MAX8997. Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
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由 Andres Salomon 提交于
Replace mfd_shared_platform_driver_register with mfd_clone_cell. The former was called by an mfd client, and registered both a platform driver and device. The latter is called by an mfd driver, and registers only a platform device. The downside of this is that mfd drivers need to be modified whenever new clients are added that share a cell; the upside is that it fits Linux's driver model better. It's also simpler. This also converts cs5535-mfd/olpc-xo1 from the old API. cs5535-mfd now creates the olpc-xo1-{acpi,pms} devices, while olpc-xo1 binds to them via platform drivers. Signed-off-by: NAndres Salomon <dilinger@queued.net> Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
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- 26 3月, 2011 6 次提交
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由 Linus Walleij 提交于
This exposes the functionality for rise/fall fime when setting voltage to the consumers. Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Linus Walleij 提交于
This makes it possible to set the stabilization time for voltage regulators in the same manner as enable_time(). The interface only supports regulators that implements fixed selectors. Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Bengt Jonsson 提交于
The regulators on the AB8500 have a lot of custom hardware control settings pertaining to 8 external signals, settings which are board-specific and need be provided from the platform at startup. Initialization added for regulators Vana, VextSupply1, VextSupply2, VextSupply3, Vaux1, Vaux2, Vaux3, VTVout, Vintcore12, Vaudio, Vdmic, Vamic1, Vamic2, VrefDDR. Signed-off-by: NBengt Jonsson <bengt.g.jonsson@stericsson.com> Reviewed-by: NRickard Andersson <rickard.andersson@stericsson.com> Reviewed-by: NJonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Bengt Jonsson 提交于
Signed-off-by: NBengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 MyungJoo Ham 提交于
The regulator core had suspend-prepare that turns off the regulators when entering a system-wide suspend. However, it did not have suspend-finish that pairs with suspend-prepare and the regulator core has assumed that the regulator devices and their drivers support autonomous recover at resume. This patch adds regulator_suspend_finish that pairs with the previously-existed regulator_suspend_prepare. The function regulator_suspend_finish turns on the regulators that have always_on set or positive use_count so that we can reset the regulator states appropriately at resume. In regulator_suspend_finish, if has_full_constraints, it disables unnecessary regulators. Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> -- Updates v3 comments corrected (Thanks to Igor) v2 disable unnecessary regulators (Thanks to Mark) Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Thomas Gleixner 提交于
Some archs want to print extra information for certain irq_chips which is per irq and not per chip. Allow them to provide a chip callback to print the chip name and the extra information. PowerPC wants to print the LEVEL/EDGE type information. Make it configurable. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 25 3月, 2011 10 次提交
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由 Dave Chinner 提交于
All that remains of the inode_lock is protecting the inode hash list manipulation and traversals. Rename the inode_lock to inode_hash_lock to reflect it's actual function. Signed-off-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Dave Chinner 提交于
Protect the inode writeback list with a new global lock inode_wb_list_lock and use it to protect the list manipulations and traversals. This lock replaces the inode_lock as the inodes on the list can be validity checked while holding the inode->i_lock and hence the inode_lock is no longer needed to protect the list. Signed-off-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Dave Chinner 提交于
Protect inode state transitions and validity checks with the inode->i_lock. This enables us to make inode state transitions independently of the inode_lock and is the first step to peeling away the inode_lock from the code. This requires that __iget() is done atomically with i_state checks during list traversals so that we don't race with another thread marking the inode I_FREEING between the state check and grabbing the reference. Also remove the unlock_new_inode() memory barrier optimisation required to avoid taking the inode_lock when clearing I_NEW. Simplify the code by simply taking the inode->i_lock around the state change and wakeup. Because the wakeup is no longer tricky, remove the wake_up_inode() function and open code the wakeup where necessary. Signed-off-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 David Rientjes 提交于
Commit ddd588b5 ("oom: suppress nodes that are not allowed from meminfo on oom kill") moved lib/show_mem.o out of lib/lib.a, which resulted in build warnings on all architectures that implement their own versions of show_mem(): lib/lib.a(show_mem.o): In function `show_mem': show_mem.c:(.text+0x1f4): multiple definition of `show_mem' arch/sparc/mm/built-in.o:(.text+0xd70): first defined here The fix is to remove __show_mem() and add its argument to show_mem() in all implementations to prevent this breakage. Architectures that implement their own show_mem() actually don't do anything with the argument yet, but they could be made to filter nodes that aren't allowed in the current context in the future just like the generic implementation. Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Reported-by: NJames Bottomley <James.Bottomley@hansenpartnership.com> Suggested-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Weston Andros Adamson 提交于
changes LAYOUTGET and GETDEVICEINFO XDR parsing to: - not use vmap, which doesn't work on incoherent archs - use xdr_stream parsing for all xdr Signed-off-by: NWeston Andros Adamson <dros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
When sec=<something> is not presented as a mount option, we should attempt to determine what security flavor the server is using. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
A submount may use different security than the parent mount does. We should figure out what sec flavor the submount uses at mount time. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
This patch adds the nfs4 operation secinfo as a valid nfs rpc operation. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
A later patch will need to perform a lookup using an alternate client with a different security flavor. This patch adds support for doing that on NFS v4. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Simon Horman 提交于
This is my second attempt to make this enum generally available. The first attempt added MMCIF_PROGRESS_* to include/linux/mmc/sh_mmcif.h. However this is not sufficiently generic as the enum will be used by SDHI boot code. Signed-off-by: NSimon Horman <horms@verge.net.au> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 24 3月, 2011 6 次提交
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由 Milan Broz 提交于
Add DM_SECURE_DATA_FLAG which userspace can use to ensure that all buffers allocated for dm-ioctl are wiped immediately after use. The user buffer is wiped as well (we do not want to keep and return sensitive data back to userspace if the flag is set). Wiping is useful for cryptsetup to ensure that the key is present in memory only in defined places and only for the time needed. (For crypt, key can be present in table during load or table status, wait and message commands). Signed-off-by: NMilan Broz <mbroz@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Namhyung Kim 提交于
The %pB format specifier is for stack backtrace. Its handler sprint_backtrace() does symbol lookup using (address-1) to ensure the address will not point outside of the function. If there is a tail-call to the function marked "noreturn", gcc optimized out the code after the call then causes saved return address points outside of the function (i.e. the start of the next function), so pollutes call trace somewhat. This patch adds the %pB printk mechanism that allows architecture call-trace printout functions to improve backtrace printouts. Signed-off-by: NNamhyung Kim <namhyung@gmail.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-arch@vger.kernel.org LKML-Reference: <1300934550-21394-1-git-send-email-namhyung@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Olaf Hering 提交于
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn The Xen PV drivers in a crashed HVM guest can not connect to the dom0 backend drivers because both frontend and backend drivers are still in connected state. To run the connection reset function only in case of a crashdump, the is_kdump_kernel() function needs to be available for the PV driver modules. Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel() usable for modules. Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup() to early_param(). It adds an address range check from x86 also on ia64 and powerpc. [akpm@linux-foundation.org: additional #includes] [akpm@linux-foundation.org: remove elfcorehdr_addr export] [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes] Signed-off-by: NOlaf Hering <olaf@aepfle.de> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Serge E. Hallyn 提交于
And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by: NSerge E. Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: NDavid Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Serge E. Hallyn 提交于
Cheat for now and say all files belong to init_user_ns. Next step will be to let superblocks belong to a user_ns, and derive inode_userns(inode) from inode->i_sb->s_user_ns. Finally we'll introduce more flexible arrangements. Changelog: Feb 15: make is_owner_or_cap take const struct inode Feb 23: make is_owner_or_cap bool [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NSerge E. Hallyn <serge.hallyn@canonical.com> Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com> Acked-by: NDaniel Lezcano <daniel.lezcano@free.fr> Acked-by: NDavid Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Serge E. Hallyn 提交于
CAP_IPC_OWNER and CAP_IPC_LOCK can be checked against current_user_ns(), because the resource comes from current's own ipc namespace. setuid/setgid are to uids in own namespace, so again checks can be against current_user_ns(). Changelog: Jan 11: Use task_ns_capable() in place of sched_capable(). Jan 11: Use nsown_capable() as suggested by Bastian Blank. Jan 11: Clarify (hopefully) some logic in futex and sched.c Feb 15: use ns_capable for ipc, not nsown_capable Feb 23: let copy_ipcs handle setting ipc_ns->user_ns Feb 23: pass ns down rather than taking it from current [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NSerge E. Hallyn <serge.hallyn@canonical.com> Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com> Acked-by: NDaniel Lezcano <daniel.lezcano@free.fr> Acked-by: NDavid Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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