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934,681 commits
| Author | SHA1 | Message | Date | |
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Ahmed S. Darwish
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2ca97ac8bd |
userfaultfd: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-23-a.darwish@linutronix.de |
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Ahmed S. Darwish
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76246c9219 |
NFSv4: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-22-a.darwish@linutronix.de |
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Ahmed S. Darwish
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67b7b641ca |
iocost: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Daniel Wagner <dwagner@suse.de> Link: https://lkml.kernel.org/r/20200720155530.1173732-21-a.darwish@linutronix.de |
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Ahmed S. Darwish
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0a87b25ff2 |
raid5: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Song Liu <song@kernel.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-20-a.darwish@linutronix.de |
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Ahmed S. Darwish
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2647537197 |
vfs: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-19-a.darwish@linutronix.de |
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Ahmed S. Darwish
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025e82bcbc |
timekeeping: Use sequence counter with associated raw spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_raw_spinlock_t data type, which allows to associate a raw spinlock with the sequence counter. This enables lockdep to verify that the raw spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-18-a.darwish@linutronix.de |
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Ahmed S. Darwish
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77cc278f7b |
xfrm: policy: Use sequence counters with associated lock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. If the serialization primitive is not disabling preemption implicitly, preemption has to be explicitly disabled before entering the sequence counter write side critical section. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t and seqcount_mutex_t data types instead, which allow to associate a lock with the sequence counter. This enables lockdep to verify that the lock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-17-a.darwish@linutronix.de |
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Ahmed S. Darwish
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b901892b51 |
netfilter: nft_set_rbtree: Use sequence counter with associated rwlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_rwlock_t data type, which allows to associate a rwlock with the sequence counter. This enables lockdep to verify that the rwlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-16-a.darwish@linutronix.de |
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Ahmed S. Darwish
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8201d923f4 |
netfilter: conntrack: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-15-a.darwish@linutronix.de |
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Ahmed S. Darwish
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b75058614f |
sched: tasks: Use sequence counter with associated spinlock
A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not contain the information of which lock must be held when entering a write side critical section. Use the new seqcount_spinlock_t data type, which allows to associate a spinlock with the sequence counter. This enables lockdep to verify that the spinlock used for writer serialization is held when the write side critical section is entered. If lockdep is disabled this lock association is compiled out and has neither storage size nor runtime overhead. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-14-a.darwish@linutronix.de |
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Ahmed S. Darwish
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cd29f22019 |
dma-buf: Use sequence counter with associated wound/wait mutex
A sequence counter write side critical section must be protected by some
form of locking to serialize writers. If the serialization primitive is
not disabling preemption implicitly, preemption has to be explicitly
disabled before entering the sequence counter write side critical
section.
The dma-buf reservation subsystem uses plain sequence counters to manage
updates to reservations. Writer serialization is accomplished through a
wound/wait mutex.
Acquiring a wound/wait mutex does not disable preemption, so this needs
to be done manually before and after the write side critical section.
Use the newly-added seqcount_ww_mutex_t instead:
- It associates the ww_mutex with the sequence count, which enables
lockdep to validate that the write side critical section is properly
serialized.
- It removes the need to explicitly add preempt_disable/enable()
around the write side critical section because the write_begin/end()
functions for this new data type automatically do this.
If lockdep is disabled this ww_mutex lock association is compiled out
and has neither storage size nor runtime overhead.
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lkml.kernel.org/r/20200720155530.1173732-13-a.darwish@linutronix.de
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Ahmed S. Darwish
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318ce71f3e |
dma-buf: Remove custom seqcount lockdep class key
Commit |
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Ahmed S. Darwish
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ec8702da57 |
seqlock: Align multi-line macros newline escapes at 72 columns
Parent commit, "seqlock: Extend seqcount API with associated locks", introduced a big number of multi-line macros that are newline-escaped at 72 columns. For overall cohesion, align the earlier-existing macros similarly. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-11-a.darwish@linutronix.de |
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Ahmed S. Darwish
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55f3560df9 |
seqlock: Extend seqcount API with associated locks
A sequence counter write side critical section must be protected by some
form of locking to serialize writers. If the serialization primitive is
not disabling preemption implicitly, preemption has to be explicitly
disabled before entering the write side critical section.
There is no built-in debugging mechanism to verify that the lock used
for writer serialization is held and preemption is disabled. Some usage
sites like dma-buf have explicit lockdep checks for the writer-side
lock, but this covers only a small portion of the sequence counter usage
in the kernel.
Add new sequence counter types which allows to associate a lock to the
sequence counter at initialization time. The seqcount API functions are
extended to provide appropriate lockdep assertions depending on the
seqcount/lock type.
For sequence counters with associated locks that do not implicitly
disable preemption, preemption protection is enforced in the sequence
counter write side functions. This removes the need to explicitly add
preempt_disable/enable() around the write side critical sections: the
write_begin/end() functions for these new sequence counter types
automatically do this.
Introduce the following seqcount types with associated locks:
seqcount_spinlock_t
seqcount_raw_spinlock_t
seqcount_rwlock_t
seqcount_mutex_t
seqcount_ww_mutex_t
Extend the seqcount read and write functions to branch out to the
specific seqcount_LOCKTYPE_t implementation at compile-time. This avoids
kernel API explosion per each new seqcount_LOCKTYPE_t added. Add such
compile-time type detection logic into a new, internal, seqlock header.
Document the proper seqcount_LOCKTYPE_t usage, and rationale, at
Documentation/locking/seqlock.rst.
If lockdep is disabled, this lock association is compiled out and has
neither storage size nor runtime overhead.
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200720155530.1173732-10-a.darwish@linutronix.de
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Ahmed S. Darwish
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859247d39f |
seqlock: lockdep assert non-preemptibility on seqcount_t write
Preemption must be disabled before entering a sequence count write side critical section. Failing to do so, the seqcount read side can preempt the write side section and spin for the entire scheduler tick. If that reader belongs to a real-time scheduling class, it can spin forever and the kernel will livelock. Assert through lockdep that preemption is disabled for seqcount writers. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-9-a.darwish@linutronix.de |
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Ahmed S. Darwish
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8fd8ad5c5d |
lockdep: Add preemption enabled/disabled assertion APIs
Asserting that preemption is enabled or disabled is a critical sanity
check. Developers are usually reluctant to add such a check in a
fastpath as reading the preemption count can be costly.
Extend the lockdep API with macros asserting that preemption is disabled
or enabled. If lockdep is disabled, or if the underlying architecture
does not support kernel preemption, this assert has no runtime overhead.
References:
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Ahmed S. Darwish
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932e463652 |
seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount()
raw_seqcount_begin() has the same code as raw_read_seqcount(), with the exception of masking the sequence counter's LSB before returning it to the caller. Note, raw_seqcount_begin() masks the counter's LSB before returning it to the caller so that read_seqcount_retry() can fail if the counter is odd -- without the overhead of an extra branching instruction. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-7-a.darwish@linutronix.de |
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Ahmed S. Darwish
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89b88845e0 |
seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs
seqlock.h is now included by kernel's RST documentation, but a small number of the the exported seqlock.h functions are kernel-doc annotated. Add kernel-doc for all seqlock.h exported APIs. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-6-a.darwish@linutronix.de |
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Ahmed S. Darwish
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f4a27cbcec |
seqlock: Reorder seqcount_t and seqlock_t API definitions
The seqlock.h seqcount_t and seqlock_t API definitions are presented in
the chronological order of their development rather than the order that
makes most sense to readers. This makes it hard to follow and understand
the header file code.
Group and reorder all of the exported seqlock.h functions according to
their function.
First, group together the seqcount_t standard read path functions:
- __read_seqcount_begin()
- raw_read_seqcount_begin()
- read_seqcount_begin()
since each function is implemented exactly in terms of the one above
it. Then, group the special-case seqcount_t readers on their own as:
- raw_read_seqcount()
- raw_seqcount_begin()
since the only difference between the two functions is that the second
one masks the sequence counter LSB while the first one does not. Note
that raw_seqcount_begin() can actually be implemented in terms of
raw_read_seqcount(), which will be done in a follow-up commit.
Then, group the seqcount_t write path functions, instead of injecting
unrelated seqcount_t latch functions between them, and order them as:
- raw_write_seqcount_begin()
- raw_write_seqcount_end()
- write_seqcount_begin_nested()
- write_seqcount_begin()
- write_seqcount_end()
- raw_write_seqcount_barrier()
- write_seqcount_invalidate()
which is the expected natural order. This also isolates the seqcount_t
latch functions into their own area, at the end of the sequence counters
section, and before jumping to the next one: sequential locks
(seqlock_t).
Do a similar grouping and reordering for seqlock_t "locking" readers vs.
the "conditionally locking or lockless" ones.
No implementation code was changed in any of the reordering above.
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200720155530.1173732-5-a.darwish@linutronix.de
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Ahmed S. Darwish
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d3b35b87f4 |
seqlock: seqcount_t latch: End read sections with read_seqcount_retry()
The seqcount_t latch reader example at the raw_write_seqcount_latch() kernel-doc comment ends the latch read section with a manual smp memory barrier and sequence counter comparison. This is technically correct, but it is suboptimal: read_seqcount_retry() already contains the same logic of an smp memory barrier and sequence counter comparison. End the latch read critical section example with read_seqcount_retry(). Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-4-a.darwish@linutronix.de |
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Ahmed S. Darwish
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15cbe67bbd |
seqlock: Properly format kernel-doc code samples
Align the code samples and note sections inside kernel-doc comments with tabs. This way they can be properly parsed and rendered by Sphinx. It also makes the code samples easier to read from text editors. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200720155530.1173732-3-a.darwish@linutronix.de |
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Ahmed S. Darwish
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0d24f65e93 |
Documentation: locking: Describe seqlock design and usage
Proper documentation for the design and usage of sequence counters and
sequential locks does not exist. Complete the seqlock.h documentation as
follows:
- Divide all documentation on a seqcount_t vs. seqlock_t basis. The
description for both mechanisms was intermingled, which is incorrect
since the usage constrains for each type are vastly different.
- Add an introductory paragraph describing the internal design of, and
rationale for, sequence counters.
- Document seqcount_t writer non-preemptibility requirement, which was
not previously documented anywhere, and provide a clear rationale.
- Provide template code for seqcount_t and seqlock_t initialization
and reader/writer critical sections.
- Recommend using seqlock_t by default. It implicitly handles the
serialization and non-preemptibility requirements of writers.
At seqlock.h:
- Remove references to brlocks as they've long been removed from the
kernel.
- Remove references to gcc-3.x since the kernel's minimum supported
gcc version is 4.9.
References:
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Peter Zijlstra
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f05d67179d | Merge branch 'locking/header' | ||
Herbert Xu
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459e39538e |
locking/qspinlock: Do not include atomic.h from qspinlock_types.h
This patch breaks a header loop involving qspinlock_types.h. The issue is that qspinlock_types.h includes atomic.h, which then eventually includes kernel.h which could lead back to the original file via spinlock_types.h. As ATOMIC_INIT is now defined by linux/types.h, there is no longer any need to include atomic.h from qspinlock_types.h. This also allows the CONFIG_PARAVIRT hack to be removed since it was trying to prevent exactly this loop. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Waiman Long <longman@redhat.com> Link: https://lkml.kernel.org/r/20200729123316.GC7047@gondor.apana.org.au |
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Herbert Xu
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7ca8cf5347 |
locking/atomic: Move ATOMIC_INIT into linux/types.h
This patch moves ATOMIC_INIT from asm/atomic.h into linux/types.h. This allows users of atomic_t to use ATOMIC_INIT without having to include atomic.h as that way may lead to header loops. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Waiman Long <longman@redhat.com> Link: https://lkml.kernel.org/r/20200729123105.GB7047@gondor.apana.org.au |
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Herbert Xu
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e885d5d947 |
lockdep: Move list.h inclusion into lockdep.h
Currently lockdep_types.h includes list.h without actually using any of its macros or functions. All it needs are the type definitions which were moved into types.h long ago. This potentially causes inclusion loops because both are included by many core header files. This patch moves the list.h inclusion into lockdep.h. Note that we could probably remove it completely but that could potentially result in compile failures should any end users not include list.h directly and also be unlucky enough to not get list.h via some other header file. Reported-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Petr Mladek <pmladek@suse.com> Link: https://lkml.kernel.org/r/20200716063649.GA23065@gondor.apana.org.au |
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Ingo Molnar
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c84d53051f |
Linux 5.8-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl8UzA4eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGQ7cH/3v+Gv+SmHJCvaT2 CSu0+7okVnYbY3UTb3hykk7/aOqb6284KjxR03r0CWFzsEsZVhC5pvvruASSiMQg Pi04sLqv6CsGLHd1n+pl4AUYEaxq6k4KS3uU3HHSWxrahDDApQoRUx2F8lpOxyj8 RiwnoO60IMPA7IFJqzcZuFqsgdxqiiYvnzT461KX8Mrw6fyMXeR2KAj2NwMX8dZN At21Sf8+LSoh6q2HnugfiUd/jR10XbfxIIx2lXgIinb15GXgWydEQVrDJ7cUV7ix Jd0S+dtOtp+lWtFHDoyjjqqsMV7+G8i/rFNZoxSkyZqsUTaKzaR6JD3moSyoYZgG 0+eXO4A= =9EpR -----END PGP SIGNATURE----- Merge tag 'v5.8-rc6' into locking/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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ba47d845d7 | Linux 5.8-rc6 v5.8-rc6 | ||
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Linus Torvalds
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92188b41f1 |
Third batch of perf tooling fixes for 5.8:
- Update hashmap.h from libbpf and kvm.h from x86's kernel UAPI.
- Set opt->set in libsubcmd's OPT_CALLBACK_SET(). Fixes
'perf record --switch-output-event event-name' usage.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Test results:
The first ones are container based builds of tools/perf with and without libelf
support. Where clang is available, it is also used to build perf with/without
libelf, and building with LIBCLANGLLVM=1 (built-in clang) with gcc and clang
when clang and its devel libraries are installed.
The objtool and samples/bpf/ builds are disabled now that I'm switching from
using the sources in a local volume to fetching them from a http server to
build it inside the container, to make it easier to build in a container cluster.
Those will come back later.
Several are cross builds, the ones with -x-ARCH and the android one, and those
may not have all the features built, due to lack of multi-arch devel packages,
available and being used so far on just a few, like
debian:experimental-x-{arm64,mipsel}.
The 'perf test' one will perform a variety of tests exercising
tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
with a variety of command line event specifications to then intercept the
sys_perf_event syscall to check that the perf_event_attr fields are set up as
expected, among a variety of other unit tests.
Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
with a variety of feature sets, exercising the build with an incomplete set of
features as well as with a complete one. It is planned to have it run on each
of the containers mentioned above, using some container orchestration
infrastructure. Get in contact if interested in helping having this in place.
Some of the most recent, experimental distros are failing, fixes will be
provided, but those gcc/clang versions are not yet in general use and some
are related to linking with libllvm, not the default build.
# export PERF_TARBALL=http://192.168.124.1/perf/perf-5.8.0-rc5.tar.xz
# dm
1 alpine:3.4 : Ok gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final)
2 alpine:3.5 : Ok gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final)
3 alpine:3.6 : Ok gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final)
4 alpine:3.7 : Ok gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0)
5 alpine:3.8 : Ok gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.1 (tags/RELEASE_501/final) (based on LLVM 5.0.1)
6 alpine:3.9 : Ok gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 5.0.1 (tags/RELEASE_502/final) (based on LLVM 5.0.1)
7 alpine:3.10 : Ok gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 8.0.0 (tags/RELEASE_800/final) (based on LLVM 8.0.0)
8 alpine:3.11 : Ok gcc (Alpine 9.2.0) 9.2.0, Alpine clang version 9.0.0 (https://git.alpinelinux.org/aports f7f0d2c2b8bcd6a5843401a9a702029556492689) (based on LLVM 9.0.0)
9 alpine:3.12 : Ok gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (https://gitlab.alpinelinux.org/alpine/aports.git 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
10 alpine:edge : Ok gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (git://git.alpinelinux.org/aports 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
11 alt:p8 : Ok x86_64-alt-linux-gcc (GCC) 5.3.1 20151207 (ALT p8 5.3.1-alt3.M80P.1), clang version 3.8.0 (tags/RELEASE_380/final)
12 alt:p9 : Ok x86_64-alt-linux-gcc (GCC) 8.4.1 20200305 (ALT p9 8.4.1-alt0.p9.1), clang version 7.0.1
13 alt:sisyphus : Ok x86_64-alt-linux-gcc (GCC) 9.2.1 20200123 (ALT Sisyphus 9.2.1-alt3), clang version 10.0.0
14 amazonlinux:1 : Ok gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final)
15 amazonlinux:2 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2)
16 android-ndk:r12b-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
17 android-ndk:r15c-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
18 centos:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
19 centos:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
20 centos:8 : Ok gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5), clang version 9.0.1 (Red Hat 9.0.1-2.module_el8.2.0+309+0c7b6b03)
21 clearlinux:latest : Ok gcc (Clear Linux OS for Intel Architecture) 10.1.1 20200708 releases/gcc-10.1.0-332-g17327d6cc7, clang version 10.0.0
22 debian:8 : Ok gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0)
23 debian:9 : Ok gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final)
24 debian:10 : Ok gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final)
25 debian:experimental : FAIL gcc (Debian 9.3.0-15) 9.3.0, clang version 9.0.1-13
26 debian:experimental-x-arm64 : Ok aarch64-linux-gnu-gcc (Debian 9.3.0-8) 9.3.0
27 debian:experimental-x-mips : Ok mips-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0
28 debian:experimental-x-mips64 : Ok mips64-linux-gnuabi64-gcc (Debian 9.3.0-8) 9.3.0
29 debian:experimental-x-mipsel : Ok mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909
30 fedora:20 : Ok gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
31 fedora:22 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.5.0 (tags/RELEASE_350/final)
32 fedora:23 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.7.0 (tags/RELEASE_370/final)
33 fedora:24 : Ok gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1), clang version 3.8.1 (tags/RELEASE_381/final)
34 fedora:24-x-ARC-uClibc : Ok arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
35 fedora:25 : Ok gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1), clang version 3.9.1 (tags/RELEASE_391/final)
36 fedora:26 : Ok gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), clang version 4.0.1 (tags/RELEASE_401/final)
37 fedora:27 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 5.0.2 (tags/RELEASE_502/final)
38 fedora:28 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 6.0.1 (tags/RELEASE_601/final)
39 fedora:29 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 7.0.1 (Fedora 7.0.1-6.fc29)
40 fedora:30 : Ok gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2), clang version 8.0.0 (Fedora 8.0.0-3.fc30)
41 fedora:30-x-ARC-glibc : Ok arc-linux-gcc (ARC HS GNU/Linux glibc toolchain 2019.03-rc1) 8.3.1 20190225
42 fedora:30-x-ARC-uClibc : Ok arc-linux-gcc (ARCv2 ISA Linux uClibc toolchain 2019.03-rc1) 8.3.1 20190225
43 fedora:31 : Ok gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2), clang version 9.0.1 (Fedora 9.0.1-2.fc31)
44 fedora:32 : Ok gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1), clang version 10.0.0 (Fedora 10.0.0-2.fc32)
45 fedora:rawhide : FAIL gcc (GCC) 10.1.1 20200618 (Red Hat 10.1.1-2), clang version 10.0.0 (Fedora 10.0.0-6.fc33)
46 gentoo-stage3-amd64:latest : Ok gcc (Gentoo 9.2.0-r2 p3) 9.2.0
47 mageia:5 : Ok gcc (GCC) 4.9.2, clang version 3.5.2 (tags/RELEASE_352/final)
48 mageia:6 : Ok gcc (Mageia 5.5.0-1.mga6) 5.5.0, clang version 3.9.1 (tags/RELEASE_391/final)
49 mageia:7 : Ok gcc (Mageia 8.3.1-0.20190524.1.mga7) 8.3.1 20190524, clang version 8.0.0 (Mageia 8.0.0-1.mga7)
50 manjaro:latest : Ok gcc (GCC) 9.2.0, clang version 9.0.0 (tags/RELEASE_900/final)
51 openmandriva:cooker : Ok gcc (GCC) 10.0.0 20200502 (OpenMandriva), clang version 10.0.1
52 opensuse:15.0 : Ok gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538], clang version 5.0.1 (tags/RELEASE_501/final 312548)
53 opensuse:15.1 : Ok gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
54 opensuse:15.2 : Ok gcc (SUSE Linux) 7.5.0, clang version 9.0.1
55 opensuse:42.3 : Ok gcc (SUSE Linux) 4.8.5, clang version 3.8.0 (tags/RELEASE_380/final 262553)
56 opensuse:tumbleweed : Ok gcc (SUSE Linux) 10.1.1 20200625 [revision c91e43e9363bd119a695d64505f96539fa451bf2], clang version 10.0.0
57 oraclelinux:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1)
58 oraclelinux:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39.0.3)
59 oraclelinux:8 : Ok gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5.0.3), clang version 9.0.1 (Red Hat 9.0.1-2.0.1.module+el8.2.0+5599+9ed9ef6d)
60 ubuntu:12.04 : Ok gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
61 ubuntu:14.04 : Ok gcc (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4
62 ubuntu:16.04 : Ok gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609, clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
63 ubuntu:16.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
64 ubuntu:16.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
65 ubuntu:16.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
66 ubuntu:16.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
67 ubuntu:16.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
68 ubuntu:16.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
69 ubuntu:18.04 : Ok gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0, clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
70 ubuntu:18.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
71 ubuntu:18.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
72 ubuntu:18.04-x-m68k : Ok m68k-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
73 ubuntu:18.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
74 ubuntu:18.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
75 ubuntu:18.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
76 ubuntu:18.04-x-riscv64 : Ok riscv64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
77 ubuntu:18.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
78 ubuntu:18.04-x-sh4 : Ok sh4-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
79 ubuntu:18.04-x-sparc64 : Ok sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
80 ubuntu:18.10 : Ok gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0, clang version 7.0.0-3 (tags/RELEASE_700/final)
81 ubuntu:19.04 : Ok gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0, clang version 8.0.0-3 (tags/RELEASE_800/final)
82 ubuntu:19.04-x-alpha : Ok alpha-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
83 ubuntu:19.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0
84 ubuntu:19.04-x-hppa : Ok hppa-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
85 ubuntu:19.10 : FAIL gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008, clang version 9.0.0-2 (tags/RELEASE_900/final)
86 ubuntu:20.04 : Ok gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, clang version 10.0.0-4ubuntu1
#
# git log --oneline -1
|
||
|
Linus Torvalds
|
efb9666e90 |
A pile of fixes for x86:
- Fix the I/O bitmap invalidation on XEN PV, which was overlooked in the
recent ioperm/iopl rework. This caused the TSS and XEN's I/O bitmap to
get out of sync.
- Use the proper vectors for HYPERV.
- Make disabling of stack protector for the entry code work with GCC
builds which enable stack protector by default. Removing the option is
not sufficient, it needs an explicit -fno-stack-protector to shut it
off.
- Mark check_user_regs() noinstr as it is called from noinstr code. The
missing annotation causes it to be placed in the text section which
makes it instrumentable.
- Add the missing interrupt disable in exc_alignment_check()
- Fixup a XEN_PV build dependency in the 32bit entry code
- A few fixes to make the Clang integrated assembler happy
- Move EFI stub build to the right place for out of tree builds
- Make prepare_exit_to_usermode() static. It's not longer called from ASM
code.
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DC7EfYvRB+jllAk1CBypBvzD0DHfMZ0myPxCcZiW2wHTVAlkpY7hiIyPHqocjE9L
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Merge tag 'x86-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull x86 fixes from Thomas Gleixner:
"A pile of fixes for x86:
- Fix the I/O bitmap invalidation on XEN PV, which was overlooked in
the recent ioperm/iopl rework. This caused the TSS and XEN's I/O
bitmap to get out of sync.
- Use the proper vectors for HYPERV.
- Make disabling of stack protector for the entry code work with GCC
builds which enable stack protector by default. Removing the option
is not sufficient, it needs an explicit -fno-stack-protector to
shut it off.
- Mark check_user_regs() noinstr as it is called from noinstr code.
The missing annotation causes it to be placed in the text section
which makes it instrumentable.
- Add the missing interrupt disable in exc_alignment_check()
- Fixup a XEN_PV build dependency in the 32bit entry code
- A few fixes to make the Clang integrated assembler happy
- Move EFI stub build to the right place for out of tree builds
- Make prepare_exit_to_usermode() static. It's not longer called from
ASM code"
* tag 'x86-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Don't add the EFI stub to targets
x86/entry: Actually disable stack protector
x86/ioperm: Fix io bitmap invalidation on Xen PV
x86: math-emu: Fix up 'cmp' insn for clang ias
x86/entry: Fix vectors to IDTENTRY_SYSVEC for CONFIG_HYPERV
x86/entry: Add compatibility with IAS
x86/entry/common: Make prepare_exit_to_usermode() static
x86/entry: Mark check_user_regs() noinstr
x86/traps: Disable interrupts in exc_aligment_check()
x86/entry/32: Fix XEN_PV build dependency
|
||
|
Linus Torvalds
|
66e4b63624 |
Two fixes for the timer wheel:
- A timer which is already expired at enqueue time can set the
base->next_expiry value backwards. As a consequence base->clk can be set
back as well. This can lead to timers expiring early. Add a sanity check
to prevent this.
- When a timer is queued with an expiry time beyond the wheel capacity
then it should be queued in the bucket of the last wheel level which is
expiring last. The code adjusts expiry time to the maximum wheel
capacity, which is only correct when the wheel clock is 0. Aside of that
the check whether the delta is larger than wheel capacity does not check
the delta, it checks the expiry value itself. As a result timers can
expire at random.
Fix this by checking the right variable and adjust expiry time so it
becomes base->clock plus capacity which places it into the outmost
bucket in the last wheel level.
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yuGJz9IJPE1NYB25PXL0TmVAQpseXKDKh3eSP2ac6Ao1FTUk/He/CwF2tsGvu+tm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Merge tag 'timers-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull timer fixes from Thomas Gleixner:
"Two fixes for the timer wheel:
- A timer which is already expired at enqueue time can set the
base->next_expiry value backwards. As a consequence base->clk can
be set back as well. This can lead to timers expiring early. Add a
sanity check to prevent this.
- When a timer is queued with an expiry time beyond the wheel
capacity then it should be queued in the bucket of the last wheel
level which is expiring last.
The code adjusted the expiry time to the maximum wheel capacity,
which is only correct when the wheel clock is 0. Aside of that the
check whether the delta is larger than wheel capacity does not
check the delta, it checks the expiry value itself. As a result
timers can expire at random.
Fix this by checking the right variable and adjust expiry time so
it becomes base->clock plus capacity which places it into the
outmost bucket in the last wheel level"
* tag 'timers-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timer: Fix wheel index calculation on last level
timer: Prevent base->clk from moving backward
|
||
|
Linus Torvalds
|
43768f7ce0 |
A set of scheduler fixes:
- Plug a load average accounting race which was introduced with a recent
optimization casing load average to show bogus numbers.
- Fix the rseq CPU id initialization for new tasks. sched_fork() does not
update the rseq CPU id so the id is the stale id of the parent task,
which can cause user space data corruption.
- Handle a 0 return value of task_h_load() correctly in the load balancer,
which does not decrease imbalance and therefore pulls until the maximum
number of loops is reached, which might be all tasks just created by a
fork bomb.
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zfLTxGeo+D/I+rdeS7ClyjeSTcZHl1fQfZBIopMevsEMymMu2BbQd+OeAlkESbS6
dp6G3dv0ZGbm9Sn4G3CEEPltoCJi7pOgRrixGi/o4APkNfy3U2r+w/kM1N6AwHE0
PYztzvq5Q++m+MEHOALsB1J8mc7vygU26EO4s/rRrV6/RnNZXL269PeZRFxxEvYn
rtmyUw53Lc72Y+23FuityE/jb2xkr80yuXQWxTOxbhzBtHO1omWQQVhBTMam5RDg
NUYzeZvK/nZW3i6WOuHyaaLj7+2ML7RmNpaYRueymJinda409GDXRcDOYXNFtxcI
lcVmsxzNF5rb7b9mXqdgdSJKuZotKLnTjXAIGhHzkSkl2uYfYW6PUGxq6BmSCKvR
GpewHQ8Ynf4JcsjioOTQjRNjJYmlrTsHcUUKXsyTIfYaEEw+i/7s/7G5G7bXxJ6G
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OPYI8WomKhj+EkJSltxUQm+ZwqhDv4rBHQ+SqPr+jhvPobUN6jS0HkOoW+SIGuo4
oMRvMiNhCyUWLFYMVL2pflJANyiFczfKWyAqyjwgiSjfNaTqSmYCcPOc1NWz/Ic4
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Merge tag 'sched-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull scheduler fixes from Thomas Gleixner:
"A set of scheduler fixes:
- Plug a load average accounting race which was introduced with a
recent optimization casing load average to show bogus numbers.
- Fix the rseq CPU id initialization for new tasks. sched_fork() does
not update the rseq CPU id so the id is the stale id of the parent
task, which can cause user space data corruption.
- Handle a 0 return value of task_h_load() correctly in the load
balancer, which does not decrease imbalance and therefore pulls
until the maximum number of loops is reached, which might be all
tasks just created by a fork bomb"
* tag 'sched-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: handle case of task_h_load() returning 0
sched: Fix unreliable rseq cpu_id for new tasks
sched: Fix loadavg accounting race
|
||
|
Linus Torvalds
|
9413cd7792 |
Two fixes for the interrupt subsystem:
- Make the handling of the firmware node consistent and do not free the
node after the domain has been created successfully. The core code
stores a pointer to it which can lead to a use after free or double
free.
This used to "work" because the pointer was not stored when the initial
code was written, but at some point later it was required to store
it. Of course nobody noticed that the existing users break that way.
- Handle affinity setting on inactive interrupts correctly when
hierarchical irq domains are enabled. When interrupts are inactive with
the modern hierarchical irqdomain design, the interrupt chips are not
necessarily in a state where affinity changes can be handled. The legacy
irq chip design allowed this because interrupts are immediately fully
initialized at allocation time. X86 has a hacky workaround for this, but
other implementations do not. This cased malfunction on GIC-V3. Instead
of playing whack a mole to find all affected drivers, change the core
code to store the requested affinity setting and then establish it when
the interrupt is allocated, which makes the X86 hack go away.
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Merge tag 'irq-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull irq fixes from Thomas Gleixner:
"Two fixes for the interrupt subsystem:
- Make the handling of the firmware node consistent and do not free
the node after the domain has been created successfully. The core
code stores a pointer to it which can lead to a use after free or
double free.
This used to "work" because the pointer was not stored when the
initial code was written, but at some point later it was required
to store it. Of course nobody noticed that the existing users break
that way.
- Handle affinity setting on inactive interrupts correctly when
hierarchical irq domains are enabled.
When interrupts are inactive with the modern hierarchical irqdomain
design, the interrupt chips are not necessarily in a state where
affinity changes can be handled. The legacy irq chip design allowed
this because interrupts are immediately fully initialized at
allocation time. X86 has a hacky workaround for this, but other
implementations do not.
This cased malfunction on GIC-V3. Instead of playing whack a mole
to find all affected drivers, change the core code to store the
requested affinity setting and then establish it when the interrupt
is allocated, which makes the X86 hack go away"
* tag 'irq-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Handle affinity setting on inactive interrupts correctly
irqdomain/treewide: Keep firmware node unconditionally allocated
|
||
|
Linus Torvalds
|
ce20d7bf6e |
USB fixes for 5.8-rc6
Here are a few small USB fixes, and one thunderbolt fix, for 5.8-rc6. Nothing huge in here, just the normal collection of gadget, dwc2/3, serial, and other minor USB driver fixes and id additions. Full details are in the shortlog. All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXxQOrA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yk8pgCeO4aQ55WEEjfHvKuOoJC7/bGz5dsAn0o3yfON LEhiAkNdgpM/DL3/OLu2 =DCX1 -----END PGP SIGNATURE----- Merge tag 'usb-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb into master Pull USB fixes from Greg KH: "Here are a few small USB fixes, and one thunderbolt fix, for 5.8-rc6. Nothing huge in here, just the normal collection of gadget, dwc2/3, serial, and other minor USB driver fixes and id additions. Full details are in the shortlog. All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: serial: iuu_phoenix: fix memory corruption USB: c67x00: fix use after free in c67x00_giveback_urb usb: gadget: function: fix missing spinlock in f_uac1_legacy usb: gadget: udc: atmel: fix uninitialized read in debug printk usb: gadget: udc: atmel: remove outdated comment in usba_ep_disable() usb: dwc2: Fix shutdown callback in platform usb: cdns3: trace: fix some endian issues usb: cdns3: ep0: fix some endian issues usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init() usb: gadget: fix langid kernel-doc warning in usbstring.c usb: dwc3: pci: add support for the Intel Jasper Lake usb: dwc3: pci: add support for the Intel Tiger Lake PCH -H variant usb: chipidea: core: add wakeup support for extcon USB: serial: option: add Quectel EG95 LTE modem thunderbolt: Fix path indices used in USB3 tunnel discovery USB: serial: ch341: add new Product ID for CH340 USB: serial: option: add GosunCn GM500 series USB: serial: cypress_m8: enable Simply Automated UPB PIM |
||
|
Linus Torvalds
|
8c18fc6344 |
dma-mapping fixes for 5.8:
- ensure we always have fully addressable memory in the dma coherent
pool (Nicolas Saenz Julienne)
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Merge tag 'dma-mapping-5.8-6' of git://git.infradead.org/users/hch/dma-mapping into master
Pull dma-mapping fixes from Christoph Hellwig:
"Ensure we always have fully addressable memory in the dma coherent
pool (Nicolas Saenz Julienne)"
* tag 'dma-mapping-5.8-6' of git://git.infradead.org/users/hch/dma-mapping:
dma-pool: do not allocate pool memory from CMA
dma-pool: make sure atomic pool suits device
dma-pool: introduce dma_guess_pool()
dma-pool: get rid of dma_in_atomic_pool()
dma-direct: provide function to check physical memory area validity
|
||
Arvind Sankar
|
da05b143a3 |
x86/boot: Don't add the EFI stub to targets
vmlinux-objs-y is added to targets, which currently means that the EFI
stub gets added to the targets as well. It shouldn't be added since it
is built elsewhere.
This confuses Makefile.build which interprets the EFI stub as a target
$(obj)/$(objtree)/drivers/firmware/efi/libstub/lib.a
and will create drivers/firmware/efi/libstub/ underneath
arch/x86/boot/compressed, to hold this supposed target, if building
out-of-tree. [0]
Fix this by pulling the stub out of vmlinux-objs-y into efi-obj-y.
[0] See scripts/Makefile.build near the end:
# Create directories for object files if they do not exist
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lkml.kernel.org/r/20200715032631.1562882-1-nivedita@alum.mit.edu
|
||
Kees Cook
|
58ac3154b8 |
x86/entry: Actually disable stack protector
Some builds of GCC enable stack protector by default. Simply removing
the arguments is not sufficient to disable stack protector, as the stack
protector for those GCC builds must be explicitly disabled. Remove the
argument removals and add -fno-stack-protector. Additionally include
missed x32 argument updates, and adjust whitespace for readability.
Fixes:
|
||
|
Linus Torvalds
|
f932d58abc |
SCSI fixes on 20200718
One small driver fix. Although the one liner makes it sound like a cosmetic change, it's a regression fix for the megaraid_sas driver. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXxMqJCYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishRQJAP48x12h TuEn5AOCjKC7xI77AyLNbtVerqSBdVRnW/6nxgD9EiBd63CnWa0PZpf2jUEVwWbF jqj9QjjaZ0CI7nLGOCM= =fZD+ -----END PGP SIGNATURE----- Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi into master Pull SCSI fix from James Bottomley: "One small driver fix. Although the one liner makes it sound like a cosmetic change, it's a regression fix for the megaraid_sas driver" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: megaraid_sas: Remove undefined ENABLE_IRQ_POLL macro |
||
|
Linus Torvalds
|
e26aeee89f |
hwmon fixes for v5.8-rc6
- Using SCT on some Tohsiba drives causes firmware hangs. Disable its use in the drivetemp driver. - Handle potential buffer overflows in scmi and aspeed-pwm-tacho driver. - Energy reporting does not work well on all AMD CPUs. Restrict amd_energy to known working models. - Enable reading the CPU temperature on NCT6798D using undocumented registers. - Fix read errors seen if PEC is enabled in adm1275 driver. - Fix setting the pwm1_enable in emc2103 driver. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAl8TEy4ACgkQyx8mb86f mYE9oBAApawi1YpQxrZSsDV+TPf/u/ftBdkWz47w3q1bcYlOqw392fbTl8MEuft6 qK0z06FB048I+vmdQayO9n1f1BpHMoHv1BMBIxFe+XcKNUL2pQJAREYsBdJl1ZNE gWmzRjJmPwVenTokAwE5rBlHnYnEwCI6/1+FKI8OyZ+U3tIAaYFqUS0nd25gHG5i kIiY/BcA6qhNPymvq82QW/yksPdR5ApWju9rTA+RVZc2o5rj9LJ6J+CsKsiLfNpm YZWB/RFIYhUTFfxG89aBoKAb3fky84//lJyXmHx/fzzoFIUUGFxm4V5SKmvPHVO3 BaG/gF0AKQRXiDT+qk3n2wldJGJ+cCkpuL3RYiaadxOVuoBb+bZqJIIMB6VFjQNg LEi1I5A5mhH56mEesoJi8tMx1gpqpKBEapDckTXfDIW4+9BksrhklW9jj4Wf2P9A 6v2XkWbQ4Kh49tn7e54RCdDO5qSiuDT28HeZCciWJjvhwq9bWaSwVIqqjfupKrnR vG9H5M4ihIIb42N2GTT3/CD7VTjg4ZUGOu3Q1o4RcSCT7Jk+1o2dBa0L6kb6XdQs ASm6DddVw2iE4I7E2GFwdNuz7b7A5i3HZbQxUAAq+Ra5JrzdW5kM2lYSFyzxDwX4 cdDip6do42DWPr7DY4xMKwACutHg5ggYZ3xxiu/OowpwAl8ka/M= =tSii -----END PGP SIGNATURE----- Merge tag 'hwmon-for-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging into master Pull hwmon fixes from Guenter Roeck: - Using SCT on some Tohsiba drives causes firmware hangs. Disable its use in the drivetemp driver. - Handle potential buffer overflows in scmi and aspeed-pwm-tacho driver. - Energy reporting does not work well on all AMD CPUs. Restrict amd_energy to known working models. - Enable reading the CPU temperature on NCT6798D using undocumented registers. - Fix read errors seen if PEC is enabled in adm1275 driver. - Fix setting the pwm1_enable in emc2103 driver. * tag 'hwmon-for-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (drivetemp) Avoid SCT usage on Toshiba DT01ACA family drives hwmon: (scmi) Fix potential buffer overflow in scmi_hwmon_probe() hwmon: (nct6775) Accept PECI Calibration as temperature source for NCT6798D hwmon: (adm1275) Make sure we are reading enough data for different chips hwmon: (emc2103) fix unable to change fan pwm1_enable attribute hwmon: (amd_energy) match for supported models hwmon: (aspeed-pwm-tacho) Avoid possible buffer overflow |
||
|
Linus Torvalds
|
6cf7ccba29 |
RISC-V Fixes for 5.8-rc6
I have two fixes:
* 16KiB kernel stacks on rv64, which fixes a lot of crashes.
* Rolling an mmiowb() into the scheduled, which when combined with Will's fix
to the mmiowb()-on-spinlock should fix the PREEMPT issues we've been seeing.
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Merge tag 'riscv-for-linus-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux into master
Pull RISC-V fixes from Palmer Dabbelt:
"Two fixes:
- 16KiB kernel stacks on rv64, which fixes a lot of crashes.
- Rolling an mmiowb() into the scheduler, which when combined with
Will's fix to the mmiowb()-on-spinlock should fix the PREEMPT
issues we've been seeing"
* tag 'riscv-for-linus-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw
riscv: use 16KB kernel stack on 64-bit
|
||
|
Linus Torvalds
|
721db9dfb1 |
powerpc fixes for 5.8 #7
A fix to the VAS code we merged this cycle, to report the proper error code to
userspace for address translation failures. And a selftest update to match.
Another fix for our pkey handling of PROT_EXEC mappings.
A fix for a crash when booting a "secure VM" under an ultravisor with certain
numbers of CPUs.
Thanks to:
Aneesh Kumar K.V, Haren Myneni, Laurent Dufour, Sandipan Das, Satheesh
Rajendran, Thiago Jung Bauermann.
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Merge tag 'powerpc-5.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux into master
Pull powerpc fixes from Michael Ellerman:
"Some more powerpc fixes for 5.8:
- A fix to the VAS code we merged this cycle, to report the proper
error code to userspace for address translation failures. And a
selftest update to match.
- Another fix for our pkey handling of PROT_EXEC mappings.
- A fix for a crash when booting a "secure VM" under an ultravisor
with certain numbers of CPUs.
Thanks to: Aneesh Kumar K.V, Haren Myneni, Laurent Dufour, Sandipan
Das, Satheesh Rajendran, Thiago Jung Bauermann"
* tag 'powerpc-5.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
selftests/powerpc: Use proper error code to check fault address
powerpc/vas: Report proper error code for address translation failure
powerpc/pseries/svm: Fix incorrect check for shared_lppaca_size
powerpc/book3s64/pkeys: Fix pkey_access_permitted() for execute disable pkey
|
||
Maciej S. Szmigiero
|
c66ef39eb2 |
hwmon: (drivetemp) Avoid SCT usage on Toshiba DT01ACA family drives
It has been observed that Toshiba DT01ACA family drives have
WRITE FPDMA QUEUED command timeouts and sometimes just freeze until
power-cycled under heavy write loads when their temperature is getting
polled in SCT mode. The SMART mode seems to be fine, though.
Let's make sure we don't use SCT mode for these drives then.
While only the 3 TB model was actually caught exhibiting the problem let's
play safe here to avoid data corruption and extend the ban to the whole
family.
Fixes:
|
||
Andy Lutomirski
|
cadfad8701 |
x86/ioperm: Fix io bitmap invalidation on Xen PV
tss_invalidate_io_bitmap() wasn't wired up properly through the pvop
machinery, so the TSS and Xen's io bitmap would get out of sync
whenever disabling a valid io bitmap.
Add a new pvop for tss_invalidate_io_bitmap() to fix it.
This is XSA-329.
Fixes:
|
||
André Almeida
|
9a71df495c |
futex: Remove unused or redundant includes
Since
|
||
|
André Almeida
|
9261308598 |
futex: Consistently use fshared as boolean
Since fshared is only conveying true/false values, declare it as bool. In get_futex_key() the usage of fshared can be restricted to the first part of the function. If fshared is false the function is terminated early and the subsequent code can use a constant 'true' instead of the variable. Signed-off-by: André Almeida <andrealmeid@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200702202843.520764-5-andrealmeid@collabora.com |
||
|
Linus Torvalds
|
6a70f89cc5 |
More NFS Client Bugfixes for Linux 5.8
Bugfixes: - NFS: Fix interrupted slots by using the SEQUENCE operation - SUNRPC: reverte |
||
|
Linus Torvalds
|
630c183b2d |
ARM: SoC fixes for v5.8
This time there are a number of actual code fixes, plus
a small set of device tree issues getting addressed:
- Renesas:
- one defconfig cleanup to allow a later Kconfig change
- Intel socfpga:
- enable QSPI devices on some machines
- fix DTC validation warnings
- TI OMAP:
- Two DEBUG_ATOMIC_SLEEP fixes for ti-sysc interconnect target module
driver
- A regression fix for ti-sysc no-idle handling that caused issues
compared to earlier platform data based booting
- A fix for memory leak for omap_hwmod_allocate_module
- Fix d_can driver probe for am437x
- NXP i.MX
- A couple of fixes on i.MX platform device registration code to stop
the use of invalid IRQ 0.
- Fix a regression seen on ls1021a platform, caused by commit
|
||
|
Linus Torvalds
|
a570f41989 |
arm64 fixes for -rc6
- Fix kernel text addresses for relocatable images booting using EFI
and with KASLR disabled so that they match the vmlinux ELF binary.
- Fix unloading and unbinding of PMU driver modules.
- Fix generic mmiowb() when writeX() is called from preemptible context
(reported by the riscv folks).
- Fix ptrace hardware single-step interactions with signal handlers,
system calls and reverse debugging.
- Fix reporting of 64-bit x0 register for 32-bit tasks via 'perf_regs'.
- Add comments describing syscall entry/exit tracing ABI.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into master
Pull arm64 fixes from Will Deacon:
"A batch of arm64 fixes.
Although the diffstat is a bit larger than we'd usually have at this
stage, a decent amount of it is the addition of comments describing
our syscall tracing behaviour, and also a sweep across all the modular
arm64 PMU drivers to make them rebust against unloading and unbinding.
There are a couple of minor things kicking around at the moment (CPU
errata and module PLTs for very large modules), but I'm not expecting
any significant changes now for us in 5.8.
- Fix kernel text addresses for relocatable images booting using EFI
and with KASLR disabled so that they match the vmlinux ELF binary.
- Fix unloading and unbinding of PMU driver modules.
- Fix generic mmiowb() when writeX() is called from preemptible
context (reported by the riscv folks).
- Fix ptrace hardware single-step interactions with signal handlers,
system calls and reverse debugging.
- Fix reporting of 64-bit x0 register for 32-bit tasks via
'perf_regs'.
- Add comments describing syscall entry/exit tracing ABI"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
drivers/perf: Prevent forced unbinding of PMU drivers
asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()
arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP
arm64: ptrace: Use NO_SYSCALL instead of -1 in syscall_trace_enter()
arm64: syscall: Expand the comment about ptrace and syscall(-1)
arm64: ptrace: Add a comment describing our syscall entry/exit trap ABI
arm64: compat: Ensure upper 32 bits of x0 are zero on syscall return
arm64: ptrace: Override SPSR.SS when single-stepping is enabled
arm64: ptrace: Consistently use pseudo-singlestep exceptions
drivers/perf: Fix kernel panic when rmmod PMU modules during perf sampling
efi/libstub/arm64: Retain 2MB kernel Image alignment if !KASLR
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André Almeida
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d7c5ed73b1 |
futex: Remove needless goto's
As stated in the coding style documentation, "if there is no cleanup needed then just return directly", instead of jumping to a label and then returning. Remove such goto's and replace with a return statement. When there's a ternary operator on the return value, replace it with the result of the operation when it is logically possible to determine it by the control flow. Signed-off-by: André Almeida <andrealmeid@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200702202843.520764-3-andrealmeid@collabora.com |
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André Almeida
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9180bd467f |
futex: Remove put_futex_key()
Since
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