As the x86 architecture now uses qrwlock for its read/write lock
implementation, it is no longer necessary to keep the old rwlock code
around. This patch removes the old rwlock code in the asm/spinlock.h
and asm/spinlock_types.h files. Now the ARCH_USE_QUEUE_RWLOCK
config parameter cannot be removed from x86/Kconfig or there will be
a compilation error.
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Waiman Long <Waiman.Long@hp.com>
Link: http://lkml.kernel.org/r/1408037251-45918-2-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Resolve some shadow warnings resulting from using the name
jiffies, which is a well-known global. This is not a problem
of course, but it could be a trap for someone copying and
pasting code, and it just makes W=2 a little cleaner.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1409739444-13635-1-git-send-email-jeffrey.t.kirsher@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The queued rwlock does not support the use of recursive read-lock in
the process context. With changes in the lockdep code to check and
disallow recursive read-lock, it is also necessary for the locking
selftest to be updated to change the process context recursive read
locking results from SUCCESS to FAILURE for rwlock.
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1407345722-61615-3-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Unlike the original unfair rwlock implementation, queued rwlock
will grant lock according to the chronological sequence of the lock
requests except when the lock requester is in the interrupt context.
Consequently, recursive read_lock calls will now hang the process if
there is a write_lock call somewhere in between the read_lock calls.
This patch updates the lockdep implementation to look for recursive
read_lock calls. A new read state (3) is used to mark those read_lock
call that cannot be recursively called except in the interrupt
context. The new read state does exhaust the 2 bits available in
held_lock:read bit field. The addition of any new read state in the
future may require a redesign of how all those bits are squeezed
together in the held_lock structure.
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1407345722-61615-2-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Evaluating a macro argument only if certain configuration options
have been selected is confusing and error-prone. Hence always
evaluate the second argument of spin_lock_nested().
An intentional side effect of this patch is that it avoids that
the following warning is reported for netif_addr_lock_nested()
when building with CONFIG_DEBUG_LOCK_ALLOC=n and with W=1:
include/linux/netdevice.h: In function 'netif_addr_lock_nested':
include/linux/netdevice.h:2865:6: warning: variable 'subclass' set but not used [-Wunused-but-set-variable]
int subclass = SINGLE_DEPTH_NESTING;
^
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/53E4A7F8.1040700@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fortunately Jason was able to reduce some of the overhead we
had introduced in the original rwsem optimistic spinning -
an it is now the same size as mutexes. Update the documentation
accordingly.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Jason Low <jason.low2@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: aswin@hp.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: http://lkml.kernel.org/r/1406752916-3341-7-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
4badad35 ("locking/mutex: Disable optimistic spinning on some
architectures") added a ARCH_SUPPORTS_ATOMIC_RMW flag to
disable the mutex optimistic feature on specific archs.
Because CONFIG_MUTEX_SPIN_ON_OWNER only depended on DEBUG and
SMP, it was ok to have the ->owner field conditional a bit
flexible. However by adding a new variable to the matter,
we can waste space with the unused field, ie: CONFIG_SMP &&
(!CONFIG_MUTEX_SPIN_ON_OWNER && !CONFIG_DEBUG_MUTEX).
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Jason Low <jason.low2@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: aswin@hp.com
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jason Low <jason.low2@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Link: http://lkml.kernel.org/r/1406752916-3341-5-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When we fail to acquire the mutex in the fastpath, we end up calling
__mutex_lock_common(). A *lot* goes on in this function. Move out the
optimistic spinning code into mutex_optimistic_spin() and simplify
the former a bit. Furthermore, this is similar to what we have in
rwsems. No logical changes.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Jason Low <jason.low2@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: aswin@hp.com
Cc: mingo@kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1406752916-3341-4-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When unlocking, we always want to reach the slowpath with the lock's counter
indicating it is unlocked. -- as returned by the asm fastpath call or by
explicitly setting it. While doing so, at least in theory, we can optimize
and allow faster lock stealing.
When unlocking, we always want to reach the slowpath with the lock's counter
indicating it is unlocked. -- as returned by the asm fastpath call or by
explicitly setting it. While doing so, at least in theory, we can optimize
and allow faster lock stealing.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: jason.low2@hp.com
Cc: aswin@hp.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1406752916-3341-2-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Just how the locking-end behaves, when unlocking, go ahead and
obtain the proper data structure immediately after the previous
(asm-end) call exits and there are (probably) pending waiters.
This simplifies a bit some of the layering.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: jason.low2@hp.com
Cc: aswin@hp.com
Cc: mingo@kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1406752916-3341-1-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Its been a while and there are no in-tree users left, so remove the
deprecated barriers.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Chen, Gong <gong.chen@linux.intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Joe Perches <joe@perches.com>
Cc: John Sullivan <jsrhbz@kanargh.force9.co.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull x86 vdso updates from Ingo Molnar:
"Further simplifications and improvements to the VDSO code, by Andy
Lutomirski"
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86_64/vsyscall: Fix warn_bad_vsyscall log output
x86/vdso: Set VM_MAYREAD for the vvar vma
x86, vdso: Get rid of the fake section mechanism
x86, vdso: Move the vvar area before the vdso text
Pull x86 UV TLB update from Ingo Molnar:
"UV TLB shootdown logic updates for version of the UV architecture"
* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/uv: Update the UV3 TLB shootdown logic
Pull RAS updates from Ingo Molnar:
"The main changes in this cycle are:
- RAS tracing/events infrastructure, by Gong Chen.
- Various generalizations of the APEI code to make it available to
non-x86 architectures, by Tomasz Nowicki"
* 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ras: Fix build warnings in <linux/aer.h>
acpi, apei, ghes: Factor out ioremap virtual memory for IRQ and NMI context.
acpi, apei, ghes: Make NMI error notification to be GHES architecture extension.
apei, mce: Factor out APEI architecture specific MCE calls.
RAS, extlog: Adjust init flow
trace, eMCA: Add a knob to adjust where to save event log
trace, RAS: Add eMCA trace event interface
RAS, debugfs: Add debugfs interface for RAS subsystem
CPER: Adjust code flow of some functions
x86, MCE: Robustify mcheck_init_device
trace, AER: Move trace into unified interface
trace, RAS: Add basic RAS trace event
x86, MCE: Kill CPU_POST_DEAD
Pull x86 platform updates from Ingo Molnar:
"The main changes in this cycle are:
- Intel SOC driver updates, by Aubrey Li.
- TS5500 platform updates, by Vivien Didelot"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pmc_atom: Silence shift wrapping warnings in pmc_sleep_tmr_show()
x86/pmc_atom: Expose PMC device state and platform sleep state
x86/pmc_atom: Eisable a few S0ix wake up events for S0ix residency
x86/platform: New Intel Atom SOC power management controller driver
x86/platform/ts5500: Add support for TS-5400 boards
x86/platform/ts5500: Add a 'name' sysfs attribute
x86/platform/ts5500: Use the DEVICE_ATTR_RO() macro
Pull x86 mm changes from Ingo Molnar:
"The main change in this cycle is the rework of the TLB range flushing
code, to simplify, fix and consolidate the code. By Dave Hansen"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Set TLB flush tunable to sane value (33)
x86/mm: New tunable for single vs full TLB flush
x86/mm: Add tracepoints for TLB flushes
x86/mm: Unify remote INVLPG code
x86/mm: Fix missed global TLB flush stat
x86/mm: Rip out complicated, out-of-date, buggy TLB flushing
x86/mm: Clean up the TLB flushing code
x86/smep: Be more informative when signalling an SMEP fault
Pull EFI changes from Ingo Molnar:
"Main changes in this cycle are:
- arm64 efi stub fixes, preservation of FP/SIMD registers across
firmware calls, and conversion of the EFI stub code into a static
library - Ard Biesheuvel
- Xen EFI support - Daniel Kiper
- Support for autoloading the efivars driver - Lee, Chun-Yi
- Use the PE/COFF headers in the x86 EFI boot stub to request that
the stub be loaded with CONFIG_PHYSICAL_ALIGN alignment - Michael
Brown
- Consolidate all the x86 EFI quirks into one file - Saurabh Tangri
- Additional error logging in x86 EFI boot stub - Ulf Winkelvos
- Support loading initrd above 4G in EFI boot stub - Yinghai Lu
- EFI reboot patches for ACPI hardware reduced platforms"
* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
efi/arm64: Handle missing virtual mapping for UEFI System Table
arch/x86/xen: Silence compiler warnings
xen: Silence compiler warnings
x86/efi: Request desired alignment via the PE/COFF headers
x86/efi: Add better error logging to EFI boot stub
efi: Autoload efivars
efi: Update stale locking comment for struct efivars
arch/x86: Remove efi_set_rtc_mmss()
arch/x86: Replace plain strings with constants
xen: Put EFI machinery in place
xen: Define EFI related stuff
arch/x86: Remove redundant set_bit(EFI_MEMMAP) call
arch/x86: Remove redundant set_bit(EFI_SYSTEM_TABLES) call
efi: Introduce EFI_PARAVIRT flag
arch/x86: Do not access EFI memory map if it is not available
efi: Use early_mem*() instead of early_io*()
arch/ia64: Define early_memunmap()
x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag
efi/reboot: Allow powering off machines using EFI
efi/reboot: Add generic wrapper around EfiResetSystem()
...
Pull x86 cpufeature updates from Ingo Molnar:
"The main changes in this cycle were:
- Continued cleanups of CPU bugs mis-marked as 'missing features', by
Borislav Petkov.
- Detect the xsaves/xrstors feature and releated cleanup, by Fenghua
Yu"
* 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, cpu: Kill cpu_has_mp
x86, amd: Cleanup init_amd
x86/cpufeature: Add bug flags to /proc/cpuinfo
x86, cpufeature: Convert more "features" to bugs
x86/xsaves: Detect xsaves/xrstors feature
x86/cpufeature.h: Reformat x86 feature macros
Pull x86 build/cleanup/debug updates from Ingo Molnar:
"Robustify the build process with a quirk to avoid GCC reordering
related bugs.
Two code cleanups.
Simplify entry_64.S CFI annotations, by Jan Beulich"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, build: Change code16gcc.h from a C header to an assembly header
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Simplify __HAVE_ARCH_CMPXCHG tests
x86/tsc: Get rid of custom DIV_ROUND() macro
* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/debug: Drop several unnecessary CFI annotations
Pull scheduler updates from Ingo Molnar:
- Move the nohz kick code out of the scheduler tick to a dedicated IPI,
from Frederic Weisbecker.
This necessiated quite some background infrastructure rework,
including:
* Clean up some irq-work internals
* Implement remote irq-work
* Implement nohz kick on top of remote irq-work
* Move full dynticks timer enqueue notification to new kick
* Move multi-task notification to new kick
* Remove unecessary barriers on multi-task notification
- Remove proliferation of wait_on_bit() action functions and allow
wait_on_bit_action() functions to support a timeout. (Neil Brown)
- Another round of sched/numa improvements, cleanups and fixes. (Rik
van Riel)
- Implement fast idling of CPUs when the system is partially loaded,
for better scalability. (Tim Chen)
- Restructure and fix the CPU hotplug handling code that may leave
cfs_rq and rt_rq's throttled when tasks are migrated away from a dead
cpu. (Kirill Tkhai)
- Robustify the sched topology setup code. (Peterz Zijlstra)
- Improve sched_feat() handling wrt. static_keys (Jason Baron)
- Misc fixes.
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
sched/fair: Fix 'make xmldocs' warning caused by missing description
sched: Use macro for magic number of -1 for setparam
sched: Robustify topology setup
sched: Fix sched_setparam() policy == -1 logic
sched: Allow wait_on_bit_action() functions to support a timeout
sched: Remove proliferation of wait_on_bit() action functions
sched/numa: Revert "Use effective_load() to balance NUMA loads"
sched: Fix static_key race with sched_feat()
sched: Remove extra static_key*() function indirection
sched/rt: Fix replenish_dl_entity() comments to match the current upstream code
sched: Transform resched_task() into resched_curr()
sched/deadline: Kill task_struct->pi_top_task
sched: Rework check_for_tasks()
sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime()
sched/fair: Disable runtime_enabled on dying rq
sched/numa: Change scan period code to match intent
sched/numa: Rework best node setting in task_numa_migrate()
sched/numa: Examine a task move when examining a task swap
sched/numa: Simplify task_numa_compare()
sched/numa: Use effective_load() to balance NUMA loads
...
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()
...
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()
...
Pull RCU changes from Ingo Molar:
"The main changes:
- torture-test updates
- callback-offloading changes
- maintainership changes
- update RCU documentation
- miscellaneous fixes"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
rcu: Allow for NULL tick_nohz_full_mask when nohz_full= missing
rcu: Fix a sparse warning in rcu_report_unblock_qs_rnp()
rcu: Fix a sparse warning in rcu_initiate_boost()
rcu: Fix __rcu_reclaim() to use true/false for bool
rcu: Remove CONFIG_PROVE_RCU_DELAY
rcu: Use __this_cpu_read() instead of per_cpu_ptr()
rcu: Don't use NMIs to dump other CPUs' stacks
rcu: Bind grace-period kthreads to non-NO_HZ_FULL CPUs
rcu: Simplify priority boosting by putting rt_mutex in rcu_node
rcu: Check both root and current rcu_node when setting up future grace period
rcu: Allow post-unlock reference for rt_mutex
rcu: Loosen __call_rcu()'s rcu_head alignment constraint
rcu: Eliminate read-modify-write ACCESS_ONCE() calls
rcu: Remove redundant ACCESS_ONCE() from tick_do_timer_cpu
rcu: Make rcu node arrays static const char * const
signal: Explain local_irq_save() call
rcu: Handle obsolete references to TINY_PREEMPT_RCU
rcu: Document deadlock-avoidance information for rcu_read_unlock()
scripts: Teach get_maintainer.pl about the new "R:" tag
rcu: Update rcu torture maintainership filename patterns
...
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Merge tag 'please-pull-misc-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull ia64 cleanups from Tony Luck:
"Miscellaneous ia64 specific cleanup"
* tag 'please-pull-misc-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
[IA64] sn: Do not needlessly convert between pointers and integers
[IA64] sn: Fix zeroing of PDAs
Changes include:
- Context tracking support (NO_HZ_FULL) which narrowly missed 3.16
- vDSO layout rework following Andy's work on x86
- TEXT_OFFSET fuzzing for bootloader testing
- /proc/cpuinfo tidy-up
- Preliminary work to support 48-bit virtual addresses, but this is
currently disabled until KVM has been ported to use it (the patches
do, however, bring some nice clean-up)
- Boot-time CPU sanity checks (especially useful on heterogenous
systems)
- Support for syscall auditing
- Support for CC_STACKPROTECTOR
- defconfig updates
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"Once again, Catalin's off on holiday and I'm looking after the arm64
tree. Please can you pull the following arm64 updates for 3.17?
Note that this branch also includes the new GICv3 driver (merged via a
stable tag from Jason's irqchip tree), since there is a fix for older
binutils on top.
Changes include:
- context tracking support (NO_HZ_FULL) which narrowly missed 3.16
- vDSO layout rework following Andy's work on x86
- TEXT_OFFSET fuzzing for bootloader testing
- /proc/cpuinfo tidy-up
- preliminary work to support 48-bit virtual addresses, but this is
currently disabled until KVM has been ported to use it (the patches
do, however, bring some nice clean-up)
- boot-time CPU sanity checks (especially useful on heterogenous
systems)
- support for syscall auditing
- support for CC_STACKPROTECTOR
- defconfig updates"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (55 commits)
arm64: add newline to I-cache policy string
Revert "arm64: dmi: Add SMBIOS/DMI support"
arm64: fpsimd: fix a typo in fpsimd_save_partial_state ENDPROC
arm64: don't call break hooks for BRK exceptions from EL0
arm64: defconfig: enable devtmpfs mount option
arm64: vdso: fix build error when switching from LE to BE
arm64: defconfig: add virtio support for running as a kvm guest
arm64: gicv3: Allow GICv3 compilation with older binutils
arm64: fix soft lockup due to large tlb flush range
arm64/crypto: fix makefile rule for aes-glue-%.o
arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL
arm64: Fix barriers used for page table modifications
arm64: Add support for 48-bit VA space with 64KB page configuration
arm64: asm/pgtable.h pmd/pud definitions clean-up
arm64: Determine the vmalloc/vmemmap space at build time based on VA_BITS
arm64: Clean up the initial page table creation in head.S
arm64: Remove asm/pgtable-*level-types.h files
arm64: Remove asm/pgtable-*level-hwdef.h files
arm64: Convert bool ARM64_x_LEVELS to int ARM64_PGTABLE_LEVELS
arm64: mm: Implement 4 levels of translation tables
...
few days.
MIPS and s390 have little going on this release; just bugfixes, some
small, some larger.
The highlights for x86 are nested VMX improvements (Jan Kiszka), optimizations
for old processor (up to Nehalem, by me and Bandan Das), and a lot of x86
emulator bugfixes (Nadav Amit).
Stephen Rothwell reported a trivial conflict with the tracing branch.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM changes from Paolo Bonzini:
"These are the x86, MIPS and s390 changes; PPC and ARM will come in a
few days.
MIPS and s390 have little going on this release; just bugfixes, some
small, some larger.
The highlights for x86 are nested VMX improvements (Jan Kiszka),
optimizations for old processor (up to Nehalem, by me and Bandan Das),
and a lot of x86 emulator bugfixes (Nadav Amit).
Stephen Rothwell reported a trivial conflict with the tracing branch"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (104 commits)
x86/kvm: Resolve shadow warnings in macro expansion
KVM: s390: rework broken SIGP STOP interrupt handling
KVM: x86: always exit on EOIs for interrupts listed in the IOAPIC redir table
KVM: vmx: remove duplicate vmx_mpx_supported() prototype
KVM: s390: Fix memory leak on busy SIGP stop
x86/kvm: Resolve shadow warning from min macro
kvm: Resolve missing-field-initializers warnings
Replace NR_VMX_MSR with its definition
KVM: x86: Assertions to check no overrun in MSR lists
KVM: x86: set rflags.rf during fault injection
KVM: x86: Setting rflags.rf during rep-string emulation
KVM: x86: DR6/7.RTM cannot be written
KVM: nVMX: clean up nested_release_vmcs12 and code around it
KVM: nVMX: fix lifetime issues for vmcs02
KVM: x86: Defining missing x86 vectors
KVM: x86: emulator injects #DB when RFLAGS.RF is set
KVM: x86: Cleanup of rflags.rf cleaning
KVM: x86: Clear rflags.rf on emulated instructions
KVM: x86: popf emulation should not change RF
KVM: x86: Clearing rflags.rf upon skipped emulated instruction
...
As he found some small bugs that went into 3.16, and these changes were
based on that, I had to apply his changes to a separate branch than
my main development branch.
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Merge tag 'trace-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing filter cleanups from Steven Rostedt:
"Oleg Nesterov did several clean ups with the tracing filter code. As
he found some small bugs that went into 3.16, and these changes were
based on that, I had to apply his changes to a separate branch than my
main development branch.
This was based on work that was already pulled into 3.16, and is a
separate pull request to keep from having local merges in my pull
request"
* tag 'trace-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Kill "filter_string" arg of replace_preds()
tracing: Change apply_subsystem_event_filter() paths to check file->system == dir
tracing: Kill ftrace_event_call->files
tracing/uprobes: Kill the dead TRACE_EVENT_FL_USE_CALL_FILTER logic
tracing: Kill call_filter_disable()
tracing: Kill destroy_call_preds()
tracing: Kill destroy_preds() and destroy_file_preds()
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.
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Merge tag 'trace-3.17' of 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
...
worked properly as it assumed the bad config was a subset of the good
config, and just found the config that would break the build.
The new way does a diff of the bad config verses the good config and makes
the similar until it finds that one config works and the other does not
and reports the config that makes that difference. The two configs do
not need to be related. It is much more useful now.
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Merge tag 'ktest-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull config-bisect changes from Steven Rostedt:
"The big change here is the rewrite of config-bisect. The old way
never worked properly as it assumed the bad config was a subset of the
good config, and just found the config that would break the build.
The new way does a diff of the bad config verses the good config and
makes the similar until it finds that one config works and the other
does not and reports the config that makes that difference. The two
configs do not need to be related. It is much more useful now:
* tag 'ktest-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Update documentation on config_bisect
ktest: Add the config bisect manual back
ktest: Remove unused functions
ktest: Put back in the CONFIG_BISECT_CHECK
ktest: Rewrite the config-bisect to actually work
ktest: Some cleanup for improving readability
ktest: add 2nd parameter of run_command() to set the redirect target file
drivers and fixes/enhancements to existing clock drivers. There are also
some non-critical fixes and improvements to the framework core.
Changes to the clock framework core include:
* improvements to printks on errors
* flattening the previously hierarchal structure of per-clock entries
in debugfs
* allow per-clock debugfs entries that are specific to a particular
clock driver
* configure initial clock parent and/or initial clock rate from Device
Tree
* several feature enhancements to the composite clock type
* misc fixes
New clock drivers added include:
* TI Palmas PMIC
* Allwinner A23 SoC
* Qualcomm APQ8084 and IPQ8064 SoCs
* Rockchip rk3188, rk3066 and rk3288 SoCs
* STMicroelectronics STiH407 SoC
* Cirrus Logic CLPS711X SoC
Many fixes, feature enhancements and further clock tree support for
existing clock drivers also were merged, such as Samsung's "ARMCLK down"
power saving feature for their Exynos4 & Exynos5 SoCs.
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Merge tag 'clk-for-linus-3.17' of git://git.linaro.org/people/mike.turquette/linux
Pull clock framework updates from Mike Turquette:
"The clock framework changes for 3.17 are mostly additions of new clock
drivers and fixes/enhancements to existing clock drivers. There are
also some non-critical fixes and improvements to the framework core.
Changes to the clock framework core include:
- improvements to printks on errors
- flattening the previously hierarchal structure of per-clock entries
in debugfs
- allow per-clock debugfs entries that are specific to a particular
clock driver
- configure initial clock parent and/or initial clock rate from
Device Tree
- several feature enhancements to the composite clock type
- misc fixes
New clock drivers added include:
- TI Palmas PMIC
- Allwinner A23 SoC
- Qualcomm APQ8084 and IPQ8064 SoCs
- Rockchip rk3188, rk3066 and rk3288 SoCs
- STMicroelectronics STiH407 SoC
- Cirrus Logic CLPS711X SoC
Many fixes, feature enhancements and further clock tree support for
existing clock drivers also were merged, such as Samsung's "ARMCLK
down" power saving feature for their Exynos4 & Exynos5 SoCs"
* tag 'clk-for-linus-3.17' of git://git.linaro.org/people/mike.turquette/linux: (86 commits)
clk: Add missing of_clk_set_defaults export
clk: checking wrong variable in __set_clk_parents()
clk: Propagate any error return from debug_init()
clk: clps711x: Add DT bindings documentation
clk: Add CLPS711X clk driver
clk: st: Use round to closest divider flag
clk: st: Update frequency tables for fs660c32 and fs432c65
clk: st: STiH407: Support for clockgenA9
clk: st: STiH407: Support for clockgenD0/D2/D3
clk: st: STiH407: Support for clockgenC0
clk: st: Add quadfs reset handling
clk: st: Add polarity bit indication
clk: st: STiH407: Support for clockgenA0
clk: st: STiH407: Support for A9 MUX Clocks
clk: st: STiH407: Support for Flexgen Clocks
clk: st: Adds Flexgen clock binding
clk: st: Remove uncessary (void *) cast
clk: st: use static const for clkgen_pll_data tables
clk: st: use static const for stm_fs tables
clk: st: Update ST clock binding documentation
...
Pull libata changes from Tejun Heo:
"Except for a few, all the changes are for ahci platform drivers for
the arm devices. Nothing too interesting or dangerous. There's one
merge from libata/for-3.16-fixes to pull in dependent changes"
* 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (23 commits)
ata: libahci: Silence compiler warning on 64-bit
Documentation: bindings: document the sub-nodes AHCI bindings
ata: ahci_platform: add a generic AHCI compatible
ata: libahci: allow to use multiple PHYs
ata: libahci_platform: move port_map parameters into the AHCI structure
ahci: imx: add missing clk_disable_unprepare() on error in imx_sata_enable()
ahci_xgene: Use correct OOB tunning parameters for APM X-Gene SoC AHCI SATA Host controller driver.
ahci_xgene: Fix the watermark threshold for the APM X-Gene SATA host controller driver.
ahci: st: Make of_device_id array const
sata_sil24: Identify which card suffered IRQ status error
ahci: st: Provide DT bindings for ST's SATA implementation
ata: Add support for the Tegra124 SATA controller
ata: ahci_platform: Increase AHCI_MAX_CLKS to 4
of: Add NVIDIA Tegra SATA controller binding
dt-bindings: ata: document ability to disable spread-spectrum clock
ata: ahci_imx: add disable for spread-spectrum
dt-bindings: ata: add ahci_imx electrical properties
ata: ahci_imx: allow hardware parameters to be specified in DT
dt-bindings: ata: create bindings for imx sata controller
ata: pata_samsung_cf: removes s5pc100 related ata codes
...
Pull cgroup changes from Tejun Heo:
"Mostly changes to get the v2 interface ready. The core features are
mostly ready now and I think it's reasonable to expect to drop the
devel mask in one or two devel cycles at least for a subset of
controllers.
- cgroup added a controller dependency mechanism so that block cgroup
can depend on memory cgroup. This will be used to finally support
IO provisioning on the writeback traffic, which is currently being
implemented.
- The v2 interface now uses a separate table so that the interface
files for the new interface are explicitly declared in one place.
Each controller will explicitly review and add the files for the
new interface.
- cpuset is getting ready for the hierarchical behavior which is in
the similar style with other controllers so that an ancestor's
configuration change doesn't change the descendants' configurations
irreversibly and processes aren't silently migrated when a CPU or
node goes down.
All the changes are to the new interface and no behavior changed for
the multiple hierarchies"
* 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (29 commits)
cpuset: fix the WARN_ON() in update_nodemasks_hier()
cgroup: initialize cgrp_dfl_root_inhibit_ss_mask from !->dfl_files test
cgroup: make CFTYPE_ONLY_ON_DFL and CFTYPE_NO_ internal to cgroup core
cgroup: distinguish the default and legacy hierarchies when handling cftypes
cgroup: replace cgroup_add_cftypes() with cgroup_add_legacy_cftypes()
cgroup: rename cgroup_subsys->base_cftypes to ->legacy_cftypes
cgroup: split cgroup_base_files[] into cgroup_{dfl|legacy}_base_files[]
cpuset: export effective masks to userspace
cpuset: allow writing offlined masks to cpuset.cpus/mems
cpuset: enable onlined cpu/node in effective masks
cpuset: refactor cpuset_hotplug_update_tasks()
cpuset: make cs->{cpus, mems}_allowed as user-configured masks
cpuset: apply cs->effective_{cpus,mems}
cpuset: initialize top_cpuset's configured masks at mount
cpuset: use effective cpumask to build sched domains
cpuset: inherit ancestor's masks if effective_{cpus, mems} becomes empty
cpuset: update cs->effective_{cpus, mems} when config changes
cpuset: update cpuset->effective_{cpus,mems} at hotplug
cpuset: add cs->effective_cpus and cs->effective_mems
cgroup: clean up sane_behavior handling
...
Pull percpu updates from Tejun Heo:
- Major reorganization of percpu header files which I think makes
things a lot more readable and logical than before.
- percpu-refcount is updated so that it requires explicit destruction
and can be reinitialized if necessary. This was pulled into the
block tree to replace the custom percpu refcnting implemented in
blk-mq.
- In the process, percpu and percpu-refcount got cleaned up a bit
* 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (21 commits)
percpu-refcount: implement percpu_ref_reinit() and percpu_ref_is_zero()
percpu-refcount: require percpu_ref to be exited explicitly
percpu-refcount: use unsigned long for pcpu_count pointer
percpu-refcount: add helpers for ->percpu_count accesses
percpu-refcount: one bit is enough for REF_STATUS
percpu-refcount, aio: use percpu_ref_cancel_init() in ioctx_alloc()
workqueue: stronger test in process_one_work()
workqueue: clear POOL_DISASSOCIATED in rebind_workers()
percpu: Use ALIGN macro instead of hand coding alignment calculation
percpu: invoke __verify_pcpu_ptr() from the generic part of accessors and operations
percpu: preffity percpu header files
percpu: use raw_cpu_*() to define __this_cpu_*()
percpu: reorder macros in percpu header files
percpu: move {raw|this}_cpu_*() definitions to include/linux/percpu-defs.h
percpu: move generic {raw|this}_cpu_*_N() definitions to include/asm-generic/percpu.h
percpu: only allow sized arch overrides for {raw|this}_cpu_*() ops
percpu: reorganize include/linux/percpu-defs.h
percpu: move accessors from include/linux/percpu.h to percpu-defs.h
percpu: include/asm-generic/percpu.h should contain only arch-overridable parts
percpu: introduce arch_raw_cpu_ptr()
...
Pull workqueue updates from Tejun Heo:
"Lai has been doing a lot of cleanups of workqueue and kthread_work.
No significant behavior change. Just a lot of cleanups all over the
place. Some are a bit invasive but overall nothing too dangerous"
* 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
kthread_work: remove the unused wait_queue_head
kthread_work: wake up worker only when the worker is idle
workqueue: use nr_node_ids instead of wq_numa_tbl_len
workqueue: remove the misnamed out_unlock label in get_unbound_pool()
workqueue: remove the stale comment in pwq_unbound_release_workfn()
workqueue: move rescuer pool detachment to the end
workqueue: unfold start_worker() into create_worker()
workqueue: remove @wakeup from worker_set_flags()
workqueue: remove an unneeded UNBOUND test before waking up the next worker
workqueue: wake regular worker if need_more_worker() when rescuer leave the pool
workqueue: alloc struct worker on its local node
workqueue: reuse the already calculated pwq in try_to_grab_pending()
workqueue: stronger test in process_one_work()
workqueue: clear POOL_DISASSOCIATED in rebind_workers()
workqueue: sanity check pool->cpu in wq_worker_sleeping()
workqueue: clear leftover flags when detached
workqueue: remove useless WARN_ON_ONCE()
workqueue: use schedule_timeout_interruptible() instead of open code
workqueue: remove the empty check in too_many_workers()
workqueue: use "pool->cpu < 0" to stand for an unbound pool
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Merge tag 'locks-v3.17-1' of git://git.samba.org/jlayton/linux
Pull file locking related changes from Jeff Layton:
"Just a couple of changes from Christoph to start us down the road
toward getting rid of the fl_owner_t typedef"
* tag 'locks-v3.17-1' of git://git.samba.org/jlayton/linux:
locks: purge fl_owner_t from fs/locks.c
locks: typedef fl_owner_t to void *
Pull crypto update from Herbert Xu:
- CTR(AES) optimisation on x86_64 using "by8" AVX.
- arm64 support to ccp
- Intel QAT crypto driver
- Qualcomm crypto engine driver
- x86-64 assembly optimisation for 3DES
- CTR(3DES) speed test
- move FIPS panic from module.c so that it only triggers on crypto
modules
- SP800-90A Deterministic Random Bit Generator (drbg).
- more test vectors for ghash.
- tweak self tests to catch partial block bugs.
- misc fixes.
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (94 commits)
crypto: drbg - fix failure of generating multiple of 2**16 bytes
crypto: ccp - Do not sign extend input data to CCP
crypto: testmgr - add missing spaces to drbg error strings
crypto: atmel-tdes - Switch to managed version of kzalloc
crypto: atmel-sha - Switch to managed version of kzalloc
crypto: testmgr - use chunks smaller than algo block size in chunk tests
crypto: qat - Fixed SKU1 dev issue
crypto: qat - Use hweight for bit counting
crypto: qat - Updated print outputs
crypto: qat - change ae_num to ae_id
crypto: qat - change slice->regions to slice->region
crypto: qat - use min_t macro
crypto: qat - remove unnecessary parentheses
crypto: qat - remove unneeded header
crypto: qat - checkpatch blank lines
crypto: qat - remove unnecessary return codes
crypto: Resolve shadow warnings
crypto: ccp - Remove "select OF" from Kconfig
crypto: caam - fix DECO RSR polling
crypto: qce - Let 'DEV_QCE' depend on both HAS_DMA and HAS_IOMEM
...
The of_clk_set_defaults() function is used in subsystems which can
be built as module. Add the missing symbol export entry so there
is no build errors like:
"ERROR: "of_clk_set_defaults" [drivers/i2c/i2c-core.ko] undefined!".
Fixes commit: 86be408bfb
"clk: Support for clock parents and rates assigned from device tree"
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
* One new edac driver for Intel E3-12xx DRAM controllers.
Out-of-subsystem changes are making the non-atomic iomem 64-bit
accessors' naming explicit to show both exact order of the 32-bit
accesses and the non-atomicity of the 64-bit access.
Usage locations are more verbose now as to what access is exactly being
done vs having a not-very telling "readq" there, for example.
This is needed by E3-12xx hardware where certain mmapped registers
cannot be accessed with requests crossing a dword boundary.
From Jason Baron.
* Extending AMD MCE signatures to a new model 60h in family 15h, from
Aravind Gopalakrishnan.
* An unsigned check cleanup, from Fabian Frederick.
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Merge tag 'edac_for_3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC changes from Borislav Petkov:
"EDAC queue for 3.17:
- One new edac driver for Intel E3-12xx DRAM controllers.
- Out-of-subsystem changes are making the non-atomic iomem 64-bit
accessors' naming explicit to show both exact order of the 32-bit
accesses and the non-atomicity of the 64-bit access.
Usage locations are more verbose now as to what access is exactly
being done vs having a not-very telling "readq" there, for example.
This is needed by E3-12xx hardware where certain mmapped registers
cannot be accessed with requests crossing a dword boundary.
From Jason Baron.
- Extending AMD MCE signatures to a new model 60h in family 15h, from
Aravind Gopalakrishnan.
- An unsigned check cleanup, from Fabian Frederick"
* tag 'edac_for_3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC, MCE, AMD: Add MCE decoding for F15h M60h
MAINTAINERS: add ie31200_edac entry
ie31200_edac: Allocate mci and map mchbar first
ie31200_edac: Introduce the driver
x38_edac: make use of lo_hi_readq()
readq/writeq: Add explicit lo_hi_[read|write]_q and hi_lo_[read|write]_q
EDAC, edac_module.c: Remove unnecessary test on unsigned value
Pull timer fixes from Thomas Gleixner:
"Two fixes in the timer area:
- a long-standing lock inversion due to a printk
- suspend-related hrtimer corruption in sched_clock"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks
sched_clock: Avoid corrupting hrtimer tree during suspend
I don't know if we really need 64 bits here but these variables are
declared as u64 and it can't hurt to cast this so we prevent any shift
wrapping.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/20140801082715.GE28869@mwanda
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Pull ARM fixes from Russell King:
"A few fixes for ARM. Some of these are correctness issues:
- TLBs must be flushed after the old mappings are removed by the DMA
mapping code, but before the new mappings are established.
- An off-by-one entry error in the Keystone LPAE setup code.
Fixes include:
- ensuring that the identity mapping for LPAE does not remove the
kernel image from the identity map.
- preventing userspace from trapping into kgdb.
- fixing a preemption issue in the Intel iwmmxt code.
- fixing a build error with nommu.
Other changes include:
- Adding a note about which areas of memory are expected to be
accessible while the identity mapping tables are in place"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction
ARM: idmap: add identity mapping usage note
ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout
ARM: fix alignment of keystone page table fixup
ARM: 8112/1: only select ARM_PATCH_PHYS_VIRT if MMU is enabled
ARM: 8100/1: Fix preemption disable in iwmmxt_task_enable()
ARM: DMA: ensure that old section mappings are flushed from the TLB
The kgdb breakpoint hooks (kgdb_brk_fn and kgdb_compiled_brk_fn)
should only be entered when a kgdb break instruction is executed
from the kernel. Otherwise, if kgdb is enabled, a userspace program
can cause the kernel to drop into the debugger by executing either
KGDB_BREAKINST or KGDB_COMPILED_BREAK.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a note about the usage of the identity mapping; we do not support
accesses outside of the identity map region and kernel image while a
CPU is using the identity map. This is because the identity mapping
may overwrite vmalloc space, IO mappings, the vectors pages, etc.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Pull vfs fixes from Al Viro:
"This contains a couple of fixes - one is the aio fix from Christoph,
the other a fallocate() one from Eric"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: fix check for fallocate on active swapfile
direct-io: fix AIO regression
Pull x86 fix from Peter Anvin:
"A single fix to not invoke the espfix code on Xen PV, as it turns out
to oops the guest when invoked after all. This patch leaves some
amount of dead code, in particular unnecessary initialization of the
espfix stacks when they won't be used, but in the interest of keeping
the patch minimal that cleanup can wait for the next cycle"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86_64/entry/xen: Do not invoke espfix64 on Xen
