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2014-03-21KVM: s390: irq routing for adapter interrupts.Cornelia Huck
Introduce a new interrupt class for s390 adapter interrupts and enable irqfds for s390. This is depending on a new s390 specific vm capability, KVM_CAP_S390_IRQCHIP, that needs to be enabled by userspace. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-03-21KVM: Add per-vm capability enablement.Cornelia Huck
Allow KVM_ENABLE_CAP to act on a vm as well as on a vcpu. This makes more sense when the caller wants to enable a vm-related capability. s390 will be the first user; wire it up. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-03-20Merge tag 'trace-fixes-v3.14-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull trace fix from Steven Rostedt: "Vaibhav Nagarnaik discovered that since 3.10 a clean-up patch made the array index in the trace event format bogus. He supplied an elegant solution that uses __stringify() and also removes the need for the event_storage and event_storage_mutex and also cuts off a few K of overhead from the trace events" * tag 'trace-fixes-v3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Fix array size mismatch in format string
2014-03-20mm: fix swapops.h:131 bug if remap_file_pages raced migrationHugh Dickins
Add remove_linear_migration_ptes_from_nonlinear(), to fix an interesting little include/linux/swapops.h:131 BUG_ON(!PageLocked) found by trinity: indicating that remove_migration_ptes() failed to find one of the migration entries that was temporarily inserted. The problem comes from remap_file_pages()'s switch from vma_interval_tree (good for inserting the migration entry) to i_mmap_nonlinear list (no good for locating it again); but can only be a problem if the remap_file_pages() range does not cover the whole of the vma (zap_pte() clears the range). remove_migration_ptes() needs a file_nonlinear method to go down the i_mmap_nonlinear list, applying linear location to look for migration entries in those vmas too, just in case there was this race. The file_nonlinear method does need rmap_walk_control.arg to do this; but it never needed vma passed in - vma comes from its own iteration. Reported-and-tested-by: Dave Jones <davej@redhat.com> Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-03-20btrfs: Add trace for btrfs_workqueue alloc/destroyQu Wenruo
Since most of the btrfs_workqueue is printed as pointer address, for easier analysis, add trace for btrfs_workqueue alloc/destroy. So it is possible to determine the workqueue that a given work belongs to(by comparing the wq pointer address with alloc trace event). Signed-off-by: Qu Wenruo <quenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-03-20rcu: Provide grace-period piggybacking APIPaul E. McKenney
The following pattern is currently not well supported by RCU: 1. Make data element inaccessible to RCU readers. 2. Do work that probably lasts for more than one grace period. 3. Do something to make sure RCU readers in flight before #1 above have completed. Here are some things that could currently be done: a. Do a synchronize_rcu() unconditionally at either #1 or #3 above. This works, but imposes needless work and latency. b. Post an RCU callback at #1 above that does a wakeup, then wait for the wakeup at #3. This works well, but likely results in an extra unneeded grace period. Open-coding this is also a bit more semi-tricky code than would be good. This commit therefore adds get_state_synchronize_rcu() and cond_synchronize_rcu() APIs. Call get_state_synchronize_rcu() at #1 above and pass its return value to cond_synchronize_rcu() at #3 above. This results in a call to synchronize_rcu() if no grace period has elapsed between #1 and #3, but requires only a load, comparison, and memory barrier if a full grace period did elapse. Requested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <peterz@infradead.org>
2014-03-20Rename TAINT_UNSAFE_SMP to TAINT_CPU_OUT_OF_SPECDave Jones
Rename TAINT_UNSAFE_SMP to TAINT_CPU_OUT_OF_SPEC, so we can repurpose the flag to encompass a wider range of pushing the CPU beyond its warrany. Signed-off-by: Dave Jones <davej@fedoraproject.org> Link: http://lkml.kernel.org/r/20140226154949.GA770@redhat.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-03-21Merge branch 'gma500-next' of git://github.com/patjak/drm-gma500 into drm-nextDave Airlie
Summary of what's included: - SGX MMU support - SGX IRQ handling (Page faults and blitter fences) - Minor Cedarview and Poulsbo unification - Work queue for ASLE interrupt work - Various cleanups, style fixes and removal of dead code * 'gma500-next' of git://github.com/patjak/drm-gma500: drm/gma500: remove stub .open/postclose drm/gma500: Code cleanup - inline documentation drm/gma500: Code cleanup - style fixes drm/gma500: Code cleanup - removal of centralized exiting of function drm/gma500/cdv: Cedarview display cleanups drm/gma500: Unify encoder mode fixup drm/gma500: Unify _get_core_freq for cdv and psb drm/gma500: Move asle interrupt work into a work task drm/gma500: Remove dead code drm/gma500: Add backing type and base align to psb_gem_create() drm/gma500: Remove unused ioctls drm/gma500: Always trap MMU page faults drm/gma500: Hook up the MMU drm/gma500: Add first piece of blitter code drm/gma500: Give MMU code it's own header file drm/gma500: Add support for SGX interrupts drm/gma500: Make SGX MMU driver actually do something
2014-03-20net: cdc_ncm: respect operator preferred MTU reported by MBIMBen Chan
According to "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, Revision 1.0, Errata-1" published by USB-IF, the wMTU field of the MBIM extended functional descriptor indicates the operator preferred MTU for IP data streams. This patch modifies cdc_ncm_setup to ensure that the MTU value set on the usbnet device does not exceed the operator preferred MTU indicated by wMTU if the MBIM device exposes a MBIM extended functional descriptor. Signed-off-by: Ben Chan <benchan@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-20USB: cdc: add MBIM extended functional descriptor structureBen Chan
This patch adds the MBIM extended functional descriptor structure defined in "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, Revision 1.0, Errata-1" published by USB-IF. Signed-off-by: Ben Chan <benchan@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-20tcp: syncookies: do not use getnstimeofday()Eric Dumazet
While it is true that getnstimeofday() uses about 40 cycles if TSC is available, it can use 1600 cycles if hpet is the clocksource. Switch to get_jiffies_64(), as this is more than enough, and go back to 60 seconds periods. Fixes: 8c27bd75f04f ("tcp: syncookies: reduce cookie lifetime to 128 seconds") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-20net/mlx4: Adapt code for N-Port VFMatan Barak
Adds support for N-Port VFs, this includes: 1. Adding support in the wrapped FW command In wrapped commands, we need to verify and convert the slave's port into the real physical port. Furthermore, when sending the response back to the slave, a reverse conversion should be made. 2. Adjusting sqpn for QP1 para-virtualization The slave assumes that sqpn is used for QP1 communication. If the slave is assigned to a port != (first port), we need to adjust the sqpn that will direct its QP1 packets into the correct endpoint. 3. Adjusting gid[5] to modify the port for raw ethernet In B0 steering, gid[5] contains the port. It needs to be adjusted into the physical port. 4. Adjusting number of ports in the query / ports caps in the FW commands When a slave queries the hardware, it needs to view only the physical ports it's assigned to. 5. Adjusting the sched_qp according to the port number The QP port is encoded in the sched_qp, thus in modify_qp we need to encode the correct port in sched_qp. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-20net/mlx4: Add utils for N-Port VFsMatan Barak
This patch adds the following utils: 1. Convert slave_id -> VF 2. Get the active ports by slave_id 3. Convert slave's port to real port 4. Get the slave's port from real port 5. Get all slaves that uses the i'th real port 6. Get all slaves that uses the i'th real port exclusively Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-20net/mlx4: Add data structures to support N-Ports per VFMatan Barak
Adds the required data structures to support VFs with N (1 or 2) ports instead of always using the number of physical ports. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-21dt-bindings: clock: Move exynos-audss-clk.h to dt-bindings/clockTushar Behera
Most of the clock related dt-binding header files are located in dt-bindings/clock folder. It would be good to keep all the similar header files at a single location. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-03-21serial: s3c: Fix build of header without serial_core.h preinclusionMark Brown
serial_s3c.h uses upf_t which is defined in serial_core.h but does not include that itself meaning that users which include serial_s3c.h by itself don't build. Signed-off-by: Mark Brown <broonie@linaro.org> [t.figa: Moved inclusion under #ifndef __ASSEMBLY__ to fix mach-exynos] Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-03-20tracing: Fix array size mismatch in format stringVaibhav Nagarnaik
In event format strings, the array size is reported in two locations. One in array subscript and then via the "size:" attribute. The values reported there have a mismatch. For e.g., in sched:sched_switch the prev_comm and next_comm character arrays have subscript values as [32] where as the actual field size is 16. name: sched_switch ID: 301 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1;signed:0; field:int common_pid; offset:4; size:4; signed:1; field:char prev_comm[32]; offset:8; size:16; signed:1; field:pid_t prev_pid; offset:24; size:4; signed:1; field:int prev_prio; offset:28; size:4; signed:1; field:long prev_state; offset:32; size:8; signed:1; field:char next_comm[32]; offset:40; size:16; signed:1; field:pid_t next_pid; offset:56; size:4; signed:1; field:int next_prio; offset:60; size:4; signed:1; After bisection, the following commit was blamed: 92edca0 tracing: Use direct field, type and system names This commit removes the duplication of strings for field->name and field->type assuming that all the strings passed in __trace_define_field() are immutable. This is not true for arrays, where the type string is created in event_storage variable and field->type for all array fields points to event_storage. Use __stringify() to create a string constant for the type string. Also, get rid of event_storage and event_storage_mutex that are not needed anymore. also, an added benefit is that this reduces the overhead of events a bit more: text data bss dec hex filename 8424787 2036472 1302528 11763787 b3804b vmlinux 8420814 2036408 1302528 11759750 b37086 vmlinux.patched Link: http://lkml.kernel.org/r/1392349908-29685-1-git-send-email-vnagarnaik@google.com Cc: Laurent Chavey <chavey@google.com> Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-03-20Merge branch 'for-upstream' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
2014-03-20Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
2014-03-20compat: include linux/unistd.h within linux/compat.hHeiko Carstens
linux/compat.h does not include linux/unistd.h but the compat.h header file contains various conditional #ifdef __ARCH_WANT_COMPAT_... asmlinkage long compat...() #endif compat system call function declarations. If linux/unistd.h isn't included it depends on previous includes if those __ARCH_WANT_COMPAT_... defines are defined or not. So add an additional linux/unistd.h include. Should fix this compile error on tile: include/uapi/asm-generic/unistd.h:195:1: error: 'compat_sys_getdents64' undeclared make[3]: *** [arch/tile/kernel/compat.o] Error 1 Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2014-03-20iommu/vt-d: Add ACPI namespace device reporting structuresDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-20sched: declare pid_alive as inlineRichard Guy Briggs
We accidentally declared pid_alive without any extern/inline connotation. Some platforms were fine with this, some like ia64 and mips were very angry. If the function is inline, the prototype should be inline! on ia64: include/linux/sched.h:1718: warning: 'pid_alive' declared inline after being called Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2014-03-20syscall_get_arch: remove useless function argumentsEric Paris
Every caller of syscall_get_arch() uses current for the task and no implementors of the function need args. So just get rid of both of those things. Admittedly, since these are inline functions we aren't wasting stack space, but it just makes the prototypes better. Signed-off-by: Eric Paris <eparis@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Cc: linux390@de.ibm.com Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: linux-arch@vger.kernel.org
2014-03-20pid: get pid_t ppid of task in init_pid_nsRichard Guy Briggs
Added the functions task_ppid_nr_ns() and task_ppid_nr() to abstract the lookup of the PPID (real_parent's pid_t) of a process, including rcu locking, in the arbitrary and init_pid_ns. This provides an alternative to sys_getppid(), which is relative to the child process' pid namespace. (informed by ebiederman's 6c621b7e) Cc: stable@vger.kernel.org Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
2014-03-20audit: Add generic compat syscall supportAKASHI Takahiro
lib/audit.c provides a generic function for auditing system calls. This patch extends it for compat syscall support on bi-architectures (32/64-bit) by adding lib/compat_audit.c. What is required to support this feature are: * add asm/unistd32.h for compat system call names * select CONFIG_AUDIT_ARCH_COMPAT_GENERIC Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2014-03-20audit: Send replies in the proper network namespace.Eric W. Biederman
In perverse cases of file descriptor passing the current network namespace of a process and the network namespace of a socket used by that socket may differ. Therefore use the network namespace of the appropiate socket to ensure replies always go to the appropiate socket. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2014-03-20audit: Audit proc/<pid>/cmdline aka proctitleWilliam Roberts
During an audit event, cache and print the value of the process's proctitle value (proc/<pid>/cmdline). This is useful in situations where processes are started via fork'd virtual machines where the comm field is incorrect. Often times, setting the comm field still is insufficient as the comm width is not very wide and most virtual machine "package names" do not fit. Also, during execution, many threads have their comm field set as well. By tying it back to the global cmdline value for the process, audit records will be more complete in systems with these properties. An example of where this is useful and applicable is in the realm of Android. With Android, their is no fork/exec for VM instances. The bare, preloaded Dalvik VM listens for a fork and specialize request. When this request comes in, the VM forks, and the loads the specific application (specializing). This was done to take advantage of COW and to not require a load of basic packages by the VM on very app spawn. When this spawn occurs, the package name is set via setproctitle() and shows up in procfs. Many of these package names are longer then 16 bytes, the historical width of task->comm. Having the cmdline in the audit records will couple the application back to the record directly. Also, on my Debian development box, some audit records were more useful then what was printed under comm. The cached proctitle is tied to the life-cycle of the audit_context structure and is built on demand. Proctitle is controllable by userspace, and thus should not be trusted. It is meant as an aid to assist in debugging. The proctitle event is emitted during syscall audits, and can be filtered with auditctl. Example: type=AVC msg=audit(1391217013.924:386): avc: denied { getattr } for pid=1971 comm="mkdir" name="/" dev="selinuxfs" ino=1 scontext=system_u:system_r:consolekit_t:s0-s0:c0.c255 tcontext=system_u:object_r:security_t:s0 tclass=filesystem type=SYSCALL msg=audit(1391217013.924:386): arch=c000003e syscall=137 success=yes exit=0 a0=7f019dfc8bd7 a1=7fffa6aed2c0 a2=fffffffffff4bd25 a3=7fffa6aed050 items=0 ppid=1967 pid=1971 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="mkdir" exe="/bin/mkdir" subj=system_u:system_r:consolekit_t:s0-s0:c0.c255 key=(null) type=UNKNOWN[1327] msg=audit(1391217013.924:386): proctitle=6D6B646972002D70002F7661722F72756E2F636F6E736F6C65 Acked-by: Steve Grubb <sgrubb@redhat.com> (wrt record formating) Signed-off-by: William Roberts <wroberts@tresys.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2014-03-20isdn: capi: fix "CAPI_VERSION" commentPaul Bolle
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-03-20CPU hotplug, perf: Fix CPU hotplug callback registrationSrivatsa S. Bhat
Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); This is wrong, since it is prone to ABBA deadlocks involving the cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently with CPU hotplug operations). Instead, the correct and race-free way of performing the callback registration is: cpu_notifier_register_begin(); for_each_online_cpu(cpu) init_cpu(cpu); /* Note the use of the double underscored version of the API */ __register_cpu_notifier(&foobar_cpu_notifier); cpu_notifier_register_done(); Fix the perf subsystem's hotplug notifier by using this latter form of callback registration. Also provide a bare-bones version of perf_cpu_notifier() that doesn't invoke the notifiers for the already online CPUs. This would be useful for subsystems that need to perform a different set of initialization for the already online CPUs, or don't need the initialization altogether. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-20CPU hotplug: Provide lockless versions of callback registration functionsSrivatsa S. Bhat
The following method of CPU hotplug callback registration is not safe due to the possibility of an ABBA deadlock involving the cpu_add_remove_lock and the cpu_hotplug.lock. get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); The deadlock is shown below: CPU 0 CPU 1 ----- ----- Acquire cpu_hotplug.lock [via get_online_cpus()] CPU online/offline operation takes cpu_add_remove_lock [via cpu_maps_update_begin()] Try to acquire cpu_add_remove_lock [via register_cpu_notifier()] CPU online/offline operation tries to acquire cpu_hotplug.lock [via cpu_hotplug_begin()] *** DEADLOCK! *** The problem here is that callback registration takes the locks in one order whereas the CPU hotplug operations take the same locks in the opposite order. To avoid this issue and to provide a race-free method to register CPU hotplug callbacks (along with initialization of already online CPUs), introduce new variants of the callback registration APIs that simply register the callbacks without holding the cpu_add_remove_lock during the registration. That way, we can avoid the ABBA scenario. However, we will need to hold the cpu_add_remove_lock throughout the entire critical section, to protect updates to the callback/notifier chain. This can be achieved by writing the callback registration code as follows: cpu_maps_update_begin(); [ or cpu_notifier_register_begin(); see below ] for_each_online_cpu(cpu) init_cpu(cpu); /* This doesn't take the cpu_add_remove_lock */ __register_cpu_notifier(&foobar_cpu_notifier); cpu_maps_update_done(); [ or cpu_notifier_register_done(); see below ] Note that we can't use get_online_cpus() here instead of cpu_maps_update_begin() because the cpu_hotplug.lock is dropped during the invocation of CPU_POST_DEAD notifiers, and hence get_online_cpus() cannot provide the necessary synchronization to protect the callback/notifier chains against concurrent reads and writes. On the other hand, since the cpu_add_remove_lock protects the entire hotplug operation (including CPU_POST_DEAD), we can use cpu_maps_update_begin/done() to guarantee proper synchronization. Also, since cpu_maps_update_begin/done() is like a super-set of get/put_online_cpus(), the former naturally protects the critical sections from concurrent hotplug operations. Since the names cpu_maps_update_begin/done() don't make much sense in CPU hotplug callback registration scenarios, we'll introduce new APIs named cpu_notifier_register_begin/done() and map them to cpu_maps_update_begin/done(). In summary, introduce the lockless variants of un/register_cpu_notifier() and also export the cpu_notifier_register_begin/done() APIs for use by modules. This way, we provide a race-free way to register hotplug callbacks as well as perform initialization for the CPUs that are already online. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-20Merge branch 'pm-cpufreq'Rafael J. Wysocki
* pm-cpufreq: (30 commits) intel_pstate: Set core to min P state during core offline cpufreq: Add stop CPU callback to cpufreq_driver interface cpufreq: Remove unnecessary braces cpufreq: Fix checkpatch errors and warnings cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE} cpufreq: Do not allow ->setpolicy drivers to provide ->target cpufreq: arm_big_little: set 'physical_cluster' for each CPU cpufreq: arm_big_little: make vexpress driver depend on bL core driver cpufreq: SPEAr: Instantiate as platform_driver cpufreq: Remove unnecessary variable/parameter 'frozen' cpufreq: Remove cpufreq_generic_exit() cpufreq: add 'freq_table' in struct cpufreq_policy cpufreq: Reformat printk() statements cpufreq: Tegra: Use cpufreq_generic_suspend() cpufreq: s5pv210: Use cpufreq_generic_suspend() cpufreq: exynos: Use cpufreq_generic_suspend() cpufreq: Implement cpufreq_generic_suspend() cpufreq: suspend governors on system suspend/hibernate cpufreq: move call to __find_governor() to cpufreq_init_policy() ...
2014-03-20Merge branches 'pm-runtime' and 'pm-sleep'Rafael J. Wysocki
* pm-runtime: PM / Runtime: Update runtime_idle() documentation for return value meaning * pm-sleep: PM / sleep: Correct whitespace errors in <linux/pm.h> PM: Add missing "freeze" state PM / Hibernate: Spelling s/anonymouns/anonymous/ PM / Runtime: Add missing "it" in comment PM / suspend: Remove unnecessary !! PCI / PM: Resume runtime-suspended devices later during system suspend ACPI / PM: Resume runtime-suspended devices later during system suspend PM / sleep: Set pm_generic functions to NULL for !CONFIG_PM_SLEEP PM: fix typo in comment PM / hibernate: use name_to_dev_t to parse resume PM / wakeup: Include appropriate header file in kernel/power/wakelock.c PM / sleep: Move prototype declaration to header file kernel/power/power.h PM / sleep: Asynchronous threads for suspend_late PM / sleep: Asynchronous threads for suspend_noirq PM / sleep: Asynchronous threads for resume_early PM / sleep: Asynchronous threads for resume_noirq PM / sleep: Two flags for async suspend_noirq and suspend_late
2014-03-20Merge branches 'pm-qos', 'pm-domains' and 'pm-drivers'Rafael J. Wysocki
* pm-qos: PM / QoS: Add type to dev_pm_qos_add_ancestor_request() arguments ACPI / LPSS: Support for device latency tolerance PM QoS ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler PM / QoS: Introcuce latency tolerance device PM QoS type PM / QoS: Add no_constraints_value field to struct pm_qos_constraints PM / QoS: Rename device resume latency QoS items * pm-domains: PM / domains: Turn latency warning into debug message * pm-drivers: PM: Add pm_runtime_suspend|resume_force functions PM / runtime: Fetch runtime PM callbacks using a macro
2014-03-20Merge branch 'acpica'Rafael J. Wysocki
* acpica: (29 commits) ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)." ACPICA: Update version to 20140214. ACPICA: Prevent infinite loops when traversing corrupted lists. ACPICA: Debugger: Add missing objects; Traverse linked lists ACPICA: Add text: ACPICA policy for new _OSI strings. No functional change. ACPICA: Update for _PRP predefined name. ACPICA: Cleanup/improve global variable declarations. ACPICA: Comment update - no functional change. ACPICA: Do not abort _PRT repair on a single subpackage failure. ACPICA: Harden _PRT repair code; check for minimum package length. ACPICA: Restore code that repairs NULL package elements in return values. ACPICA: Properly handle NULL entries in _PRT return packages. ACPICA: Update conditional compilation flags for resource dump functions. ACPICA: Predefined names: Add support for the _PRP method. ACPICA: Headers: Deploy #pragma pack (push) and (pop). ACPICA: Add boot option to disable auto return object repair ACPICA: acpidump: Remove integer types translation protection. ACPICA: acpidump: Add sparse declarators support. ACPICA: Add "Windows 2013" string to _OSI support. ACPICA: Update version to 20140114. ...
2014-03-20Merge branches 'acpi-battery' and 'acpi-video'Rafael J. Wysocki
* acpi-battery: ACPI / AC: recheck adapter status upon battery status changes ACPI / battery: call ACPI notifier chain in acpi_battery_notify ACPI / battery: move some ACPI_BATTERY_* definitions to header * acpi-video: video / output: Drop display output class support fujitsu-laptop: Drop unneeded include acer-wmi: Stop selecting VIDEO_OUTPUT_CONTROL ACPI / gpu / drm: Stop selecting VIDEO_OUTPUT_CONTROL ACPI / video: fix ACPI_VIDEO dependencies
2014-03-20PM / sleep: Correct whitespace errors in <linux/pm.h>Geert Uytterhoeven
rjw> Why exactly are they errors? Geert> checkpatch.pl says: "WARNING: please, no space before tabs", Vim (with "let c_space_errors=1") shows them in red. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-20timer: Remove code redundancy while calling get_nohz_timer_target()Viresh Kumar
There are only two users of get_nohz_timer_target(): timer and hrtimer. Both call it under same circumstances, i.e. #ifdef CONFIG_NO_HZ_COMMON if (!pinned && get_sysctl_timer_migration() && idle_cpu(this_cpu)) return get_nohz_timer_target(); #endif So, it makes more sense to get all this as part of get_nohz_timer_target() instead of duplicating code at two places. For this another parameter is required to be passed to this routine, pinned. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: linaro-kernel@lists.linaro.org Cc: fweisbec@gmail.com Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1e1b53537217d58d48c2d7a222a9c3ac47d5b64c.1395140107.git.viresh.kumar@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-20hrtimer: Rearrange comments in the order struct members are declaredViresh Kumar
Rearrange kernel doc comments in the order members of struct hrtimer are declared. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: linaro-kernel@lists.linaro.org Cc: fweisbec@gmail.com Cc: trivial@kernel.org Link: http://lkml.kernel.org/r/1db1a3cfbe8a9ea49396af75c6ac04a2e67e3ab0.1395226248.git.viresh.kumar@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-19Bluetooth: Fix passkey endianess in user_confirm and notify_passkeyJohan Hedberg
The passkey_notify and user_confirm functions in mgmt.c were expecting different endianess for the passkey, leading to a big endian bug and sparse warning in recently added SMP code. This patch converts both functions to expect host endianess and do the conversion to little endian only when assigning to the mgmt event struct. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-03-20Merge branch '3.15/dss-dt-dts' into 3.15/fbdevTomi Valkeinen
OMAP DSS related .dts changes
2014-03-20Merge branch '3.15/dss-dt' into 3.15/fbdevTomi Valkeinen
Merge OMAP DSS DT support
2014-03-20cpufreq: Add stop CPU callback to cpufreq_driver interfaceDirk Brandewie
This callback allows the driver to do clean up before the CPU is completely down and its state cannot be modified. This is used by the intel_pstate driver to reduce the requested P state prior to the core going away. This is required because the requested P state of the offline core is used to select the package P state. This effectively sets the floor package P state to the requested P state on the offline core. Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> [rjw: Minor modifications] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-20PM / Runtime: Update runtime_idle() documentation for return value meaningGeert Uytterhoeven
As of commit 45f0a85c8258 ('PM / Runtime: Rework the "runtime idle" helper routine'), the return value of ->runtime_idle() is no longer ignored by the PM core, but used to decide whether to suspend the device or not. Update the documentation to match the code. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-19random: Add arch_has_random[_seed]()H. Peter Anvin
Add predicate functions for having arch_get_random[_seed]*(). The only current use is to avoid the loop in arch_random_refill() when arch_get_random_seed_long() is unavailable. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2014-03-19x86, random: Enable the RDSEED instructionH. Peter Anvin
Upcoming Intel silicon adds a new RDSEED instruction, which is similar to RDRAND but provides a stronger guarantee: unlike RDRAND, RDSEED will always reseed the PRNG from the true random number source between each read. Thus, the output of RDSEED is guaranteed to be 100% entropic, unlike RDRAND which is only architecturally guaranteed to be 1/512 entropic (although in practice is much more.) The RDSEED instruction takes the same time to execute as RDRAND, but RDSEED unlike RDRAND can legitimately return failure (CF=0) due to entropy exhaustion if too many threads on too many cores are hammering the RDSEED instruction at the same time. Therefore, we have to be more conservative and only use it in places where we can tolerate failures. This patch introduces the primitives arch_get_random_seed_{int,long}() but does not use it yet. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2014-03-20video / output: Drop display output class supportJean Delvare
It was only ever used by the ACPI video driver, and that only use case vanished over 3 years ago (see commit 677bd810, "ACPI video: remove output switching control".) So this is dead code and I guess we can remove it now. Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-19blk-mq: fix wrong usage of hctx->state vs hctx->flagsJens Axboe
BLK_MQ_F_* flags are for hctx->flags, and are non-atomic and set at registration time. BLK_MQ_S_* flags are dynamic and atomic, and are accessed through hctx->state. Some of the BLK_MQ_S_STOPPED uses were wrong. Additionally, the header file should not use a bit shift for the _S_ flags, as they are done through the set/test_bit functions. Signed-off-by: Jens Axboe <axboe@fb.com>
2014-03-19Merge branch 'pci/resource' into nextBjorn Helgaas
* pci/resource: (26 commits) Revert "[PATCH] Insert GART region into resource map" PCI: Log IDE resource quirk in dmesg PCI: Change pci_bus_alloc_resource() type_mask to unsigned long PCI: Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() resources: Set type in __request_region() PCI: Don't check resource_size() in pci_bus_alloc_resource() s390/PCI: Use generic pci_enable_resources() tile PCI RC: Use default pcibios_enable_device() sparc/PCI: Use default pcibios_enable_device() (Leon only) sh/PCI: Use default pcibios_enable_device() microblaze/PCI: Use default pcibios_enable_device() alpha/PCI: Use default pcibios_enable_device() PCI: Add "weak" generic pcibios_enable_device() implementation PCI: Don't enable decoding if BAR hasn't been assigned an address PCI: Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit PCI: Don't try to claim IORESOURCE_UNSET resources PCI: Check IORESOURCE_UNSET before updating BAR PCI: Don't clear IORESOURCE_UNSET when updating BAR PCI: Mark resources as IORESOURCE_UNSET if we can't assign them PCI: Remove pci_find_parent_resource() use for allocation ...
2014-03-19PCI: Change pci_bus_alloc_resource() type_mask to unsigned longBjorn Helgaas
The pci_bus_alloc_resource() "type_mask" parameter is used to compare with the "flags" member of a struct resource, so it should be the same type, namely "unsigned long". No functional change because all current IORESOURCE_* flags fit in 32 bits. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-03-19libata: remove unused ata_sas_port_async_resume() stubDan Williams
Commit bc6e7c4b0d1a "libata, libsas: kill pm_result and related cleanup" renamed ata_sas_port_async_resume() to ata_sas_port_resume(), but missed a CONFIG_PM=n stub conversion. Randy fixed that up in commit a5a6569959fc "libata.h: add stub for ata_sas_port_resume", but missed the deletion of the now unused ata_sas_port_async_resume() routine. Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>