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* x86/asm/tsc: Rename native_read_tsc() to rdtsc()Andy Lutomirski2015-07-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Now that there is no paravirt TSC, the "native" is inappropriate. The function does RDTSC, so give it the obvious name: rdtsc(). Suggested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huang Rui <ray.huang@amd.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kvm ML <kvm@vger.kernel.org> Link: http://lkml.kernel.org/r/fd43e16281991f096c1e4d21574d9e1402c62d39.1434501121.git.luto@kernel.org [ Ported it to v4.2-rc1. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
* x86/asm/tsc, drivers/input/gameport: Replace rdtscl() with native_read_tsc()Andy Lutomirski2015-07-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | It's unclear to me why this code exists in the first place. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huang Rui <ray.huang@amd.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kvm ML <kvm@vger.kernel.org> Cc: linux-input@vger.kernel.org Link: http://lkml.kernel.org/r/9e058e72f4cf1f13c6483c1360b39c3d188a2c2a.1434501121.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* Input: initialize device counter variables with -1Aniroop Mathur2014-12-031-2/+2
| | | | | | | | | Let's initialize atomic_t variables keeping track of number of various devices created so far with -1 in order to avoid extra subtraction operation. Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Input: joystick - use ktime for measuring timingTakashi Iwai2014-09-111-1/+40
| | | | | | | | | | | | | | | | The current codes in gameport and analog joystick drivers for the time accounting have a long-standing problem when the system is running with CPU freq; since the timing is measured via TSC or sample counter, the calculation isn't reliable. In this patch, as a simple fix, use the standard ktime to measure the timing. In case where no high resolution timer is available, use_ktime bool option is provided to both modules. Setting use_ktime=false switches to the old methods. Tested-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Input: delete non-required instances of include <linux/init.h>Paul Gortmaker2014-01-062-2/+0
| | | | | | | | | | None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* input: gameport: convert bus code to use dev_groupsGreg Kroah-Hartman2013-10-191-7/+10
| | | | | | | | | | The dev_attrs field of struct bus_type is going away soon, dev_groups should be used instead. This converts the gameport bus code to use the correct field. Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: <linux-input@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Input: gameport: convert bus code to use drv_groupsGreg Kroah-Hartman2013-08-251-5/+7
| | | | | | | | | The drv_attrs field of struct bus_type is going away soon, drv_groups should be used instead. This converts the gameport bus code to use the correct field. Acked: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Input: remove use of __devexitBill Pemberton2012-11-242-2/+2
| | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Input: remove use of __devinitBill Pemberton2012-11-242-2/+2
| | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Input: remove use of __devexit_pBill Pemberton2012-11-242-2/+2
| | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Input: use module_pci_driverAxel Lin2012-04-212-26/+3
| | | | | | | | This patch converts the drivers in drivers/input/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Driver core: driver_find() drops reference before returningAlan Stern2012-01-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | As part of the removal of get_driver()/put_driver(), this patch (as1510) changes driver_find(); it now drops the reference it acquires before returning. The patch also adjusts all the callers of driver_find() to remove the now unnecessary calls to put_driver(). In addition, the patch adds a warning to driver_find(): Callers must make sure the driver they are searching for does not get unloaded while they are using it. This has always been the case; driver_find() has never prevented a driver from being unregistered or unloaded. Hence the patch will not introduce any new bugs. The existing callers all seem to be okay in this respect, however I don't understand the video drivers well enough to be certain about them. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Dmitry Torokhov <dmitry.torokhov@gmail.com> CC: Kyungmin Park <kyungmin.park@samsung.com> CC: Andy Walls <awalls@md.metrocast.net> CC: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* i8253: Create linux/i8253.h and use it in all 8253 related filesRalf Baechle2011-06-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/20110601180610.054254048@duck.linux-mips.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de> arch/arm/mach-footbridge/isa-timer.c | 2 +- arch/mips/cobalt/time.c | 2 +- arch/mips/jazz/irq.c | 2 +- arch/mips/kernel/i8253.c | 2 +- arch/mips/mti-malta/malta-time.c | 2 +- arch/mips/sgi-ip22/ip22-time.c | 2 +- arch/mips/sni/time.c | 2 +- arch/x86/kernel/apic/apic.c | 2 +- arch/x86/kernel/apm_32.c | 2 +- arch/x86/kernel/hpet.c | 2 +- arch/x86/kernel/i8253.c | 2 +- arch/x86/kernel/time.c | 2 +- drivers/block/hd.c | 2 +- drivers/clocksource/i8253.c | 2 +- drivers/input/gameport/gameport.c | 2 +- drivers/input/joystick/analog.c | 2 +- drivers/input/misc/pcspkr.c | 2 +- include/linux/i8253.h | 11 +++++++++++ sound/drivers/pcsp/pcsp.h | 2 +- 19 files changed, 29 insertions(+), 18 deletions(-)
* Merge branch 'for-linus' of ↵Linus Torvalds2011-02-231-1/+1
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: serio/gameport - use 'long' system workqueue Input: synaptics - document 0x0c query Input: tegra-kbc - add function keymap
| * Input: serio/gameport - use 'long' system workqueueDmitry Torokhov2011-02-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8ee294cd9def0004887da7f44b80563493b0a097 converted serio subsystem event handling from using a dedicated thread to using common workqueue. Unfortunately, this regressed our boot times, due to the fact that serio jobs take long time to execute. While the new concurrency managed workqueue code manages long-playing works just fine and schedules additional workers as needed, such works wreck havoc among remaining users of flush_scheduled_work(). To solve this problem let's move serio/gameport works from system_wq to system_long_wq which nobody tries to flush. Reported-and-tested-by: Hernando Torque <pantherchen@versanet.de> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | Merge branch 'for-2.6.38' of ↵Linus Torvalds2011-01-071-1/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (30 commits) gameport: use this_cpu_read instead of lookup x86: udelay: Use this_cpu_read to avoid address calculation x86: Use this_cpu_inc_return for nmi counter x86: Replace uses of current_cpu_data with this_cpu ops x86: Use this_cpu_ops to optimize code vmstat: User per cpu atomics to avoid interrupt disable / enable irq_work: Use per cpu atomics instead of regular atomics cpuops: Use cmpxchg for xchg to avoid lock semantics x86: this_cpu_cmpxchg and this_cpu_xchg operations percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support percpu,x86: relocate this_cpu_add_return() and friends connector: Use this_cpu operations xen: Use this_cpu_inc_return taskstats: Use this_cpu_ops random: Use this_cpu_inc_return fs: Use this_cpu_inc_return in buffer.c highmem: Use this_cpu_xx_return() operations vmstat: Use this_cpu_inc_return for vm statistics x86: Support for this_cpu_add, sub, dec, inc_return percpu: Generic support for this_cpu_add, sub, dec, inc_return ... Fixed up conflicts: in arch/x86/kernel/{apic/nmi.c, apic/x2apic_uv_x.c, process.c} as per Tejun.
| * gameport: use this_cpu_read instead of lookupChristoph Lameter2011-01-041-1/+1
| | | | | | | | | | | | Signed-off-by: Christoph Lameter <cl@linux.com> Acked-by: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Tejun Heo <tj@kernel.org>
* | Input: gameport - convert to use common workqueue instead of a threadDmitry Torokhov2010-11-181-84/+68
|/ | | | | | | | | | Instead of creating an exclusive thread to handle gameport events (which happen rarely), let's switch to common workqueue. With the arrival of concurrency-managed workqueue infrastructure we are not concerned that our callers or callees also using workqueue (no deadlocks anymore) and it should reduce total number of threads in the system. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: emu10k1 - do not leave device enabled when probe failsDmitry Torokhov2010-10-131-18/+25
| | | | | | | Rework emu_probe() to make sure we leave the device disabled if probe fails for any reason. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: fm801-gp - add missing call to pci_disable_device()Dmitry Torokhov2010-09-292-6/+7
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: emu10k1-gp - add missing calls to pci_disable_device()Rahul Ruikar2010-09-291-0/+2
| | | | | | | | | pci_disable_device() is called for following 2 cases - error path in emu_probe() - in emu_remove() Signed-off-by: Rahul Ruikar <rahul.ruikar@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Merge commit 'v2.6.34-rc6' into core/lockingIngo Molnar2010-05-031-1/+0
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| * include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | i8253: Convert i8253_lock to raw_spinlockThomas Gleixner2010-03-021-2/+2
|/ | | | | | | | | | | | | | | i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can not be converted to a sleeping lock. Convert it to raw_spinlock and fix up all users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Takashi Iwai <tiwai@suse.de> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <20100217163751.030764372@linutronix.de>
* Input: ns558 - make pnp device ids constantMárton Németh2010-01-091-1/+1
| | | | | | | | The id_table field of the struct pnp_driver is constant in <linux/pnp.h> so it makes sense to mark pnp_devids also constant. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: make PCI device ids constantMárton Németh2010-01-092-2/+2
| | | | | | | | The id_table field of the struct pci_driver is constant in <linux/pci.h> so it makes sense to mark initialization data also constant. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - switch to using pr_xxx() and dev_xxx()Dmitry Torokhov2010-01-061-34/+28
| | | | | | | | pr_xxx() and dev_xxx() helpers ensure that all messages emitted by the module have consistent prefixes, so let's use them. Also fix some formatting issues. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - make use of list_first_entry() helperDmitry Torokhov2010-01-061-19/+11
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - let device core tell us if device was registeredDmitry Torokhov2010-01-061-5/+1
| | | | | | No need to keep track of it by ourselves. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: serio - do not use deprecated dev.power.power_stateDmitry Torokhov2009-05-091-3/+3
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - rearrange EXPORT_SYMBOL() markingsDmitry Torokhov2009-04-171-10/+9
| | | | | | | Current style calls for placing EXPORT_SYMBOL() markings directly after exported symbol definition; let's follow it. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: fp801-gp - add MODULE_DESCRIPTION()Dmitry Torokhov2009-04-171-0/+1
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - fix attach driver codeDmitry Torokhov2009-04-151-8/+6
| | | | | | | | | The commit 6902c0bead4ce266226fc0c5b3828b850bdc884a that moved driver registration out of kgameportd thread was incomplete and did not add the code necessary to actually attach driver to already registered devices, rectify that. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2008-10-302-3/+2
| | | | | | Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - make gameport_register_driver() return errorsDmitry Torokhov2008-07-301-21/+67
| | | | | | | | | | Perform actual driver registration right in gameport_register_driver() instead of offloading it to kgameportd and return proper error code to callers if driver registration fails. Note that driver <-> port matching is still done by kgameportd. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: remove CVS keywordsAdrian Bunk2008-05-203-6/+0
| | | | | | | | This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport - remove rescan/reconnect facilitiesDmitry Torokhov2008-05-161-22/+0
| | | | | | | | They have never been used and are unlikely to be used in the future so remove them altogether. Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* gameport: remove duplicate includeAndre Haupt2008-02-031-1/+0
| | | | | Signed-off-by: Andre Haupt <andre@bitwigglers.org> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* gameport: don't export functions that are static inlineIvan Kokshaysky2008-01-031-2/+0
| | | | | | | | This does not make sense and moreover causes build failures on alpha. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* x86: convert cpuinfo_x86 array to a per_cpu arrayMike Travis2007-10-191-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | cpu_data is currently an array defined using NR_CPUS. This means that we overallocate since we will rarely really use maximum configured cpus. When NR_CPU count is raised to 4096 the size of cpu_data becomes 3,145,728 bytes. These changes were adopted from the sparc64 (and ia64) code. An additional field was added to cpuinfo_x86 to be a non-ambiguous cpu index. This corresponds to the index into a cpumask_t as well as the per_cpu index. It's used in various places like show_cpuinfo(). cpu_data is defined to be the boot_cpu_data structure for the NON-SMP case. Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* freezer: introduce freezer-friendly waiting macrosRafael J. Wysocki2007-10-181-2/+1
| | | | | | | | | | | | | | | | Introduce freezer-friendly wrappers around wait_event_interruptible() and wait_event_interruptible_timeout(), originally defined in <linux/wait.h>, to be used in freezable kernel threads. Make some of the freezable kernel threads use them. This is necessary for the freezer to stop sending signals to kernel threads, which is implemented in the next patch. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Input: gameport - do not touch bus's rwsemDmitry Torokhov2007-04-271-26/+13
| | | | | | | | | The subsystem rwsem is not used by the driver core at all, so there is no point in trying to access it. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] Remove unnecessary memset(0) calls after kzalloc() calls.Robert P. J. Day2007-02-111-1/+0
| | | | | | | | | | | | Delete the few remaining unnecessary calls to memset(0) after a call to kzalloc(). Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Cc: Andi Kleen <ak@suse.de> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Adam Belay <ambx1@neo.rr.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6Dmitry Torokhov2006-12-081-0/+1
|\ | | | | | | | | | | Conflicts: drivers/usb/input/hid.h
| * [PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham2006-12-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Input: gameport - rearrange gameport_bus initializationDmitry Torokhov2006-11-021-10/+9
| | | | | | | | | | | | | | Initialize gameport_bus structure at compile time instead of at runtime in gameport_init(). Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | Input: lightning - return proper error codes from l4_init()Akinobu Mita2006-11-021-2/+2
|/ | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: fm801-gp - handle errors from pci_enable_device()Jeff Garzik2006-10-121-7/+15
| | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: gameport core - handle errors returned by device_bind_driver()Dmitry Torokhov2006-10-121-2/+16
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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