bka
168 Commits
| Author | SHA1 | Message | Date | |
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Anna-Maria Gleixner
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1e34a8824b |
hrtimer: Prepare support for PREEMPT_RT
When PREEMPT_RT is enabled, the soft interrupt thread can be preempted. If
the soft interrupt thread is preempted in the middle of a timer callback,
then calling hrtimer_cancel() can lead to two issues:
- If the caller is on a remote CPU then it has to spin wait for the timer
handler to complete. This can result in unbound priority inversion.
- If the caller originates from the task which preempted the timer
handler on the same CPU, then spin waiting for the timer handler to
complete is never going to end.
To avoid these issues, add a new lock to the timer base which is held
around the execution of the timer callbacks. If hrtimer_cancel() detects
that the timer callback is currently running, it blocks on the expiry
lock. When the callback is finished, the expiry lock is dropped by the
softirq thread which wakes up the waiter and the system makes progress.
This addresses both the priority inversion and the life lock issues.
The same issue can happen in virtual machines when the vCPU which runs a
timer callback is scheduled out. If a second vCPU of the same guest calls
hrtimer_cancel() it will spin wait for the other vCPU to be scheduled back
in. The expiry lock mechanism would avoid that. It'd be trivial to enable
this when paravirt spinlocks are enabled in a guest, but it's not clear
whether this is an actual problem in the wild, so for now it's an RT only
mechanism.
[ tglx: Refactored it for mainline ]
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190726185753.737767218@linutronix.de
Signed-off-by: celtare21 <celtare21@gmail.com>
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Thomas Gleixner
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a55c16ef9b |
hrtimer: Make enqueue mode check work on RT
hrtimer_start_range_ns() has a WARN_ONCE() which verifies that a timer which is marker for softirq expiry is not queued in the hard interrupt base and vice versa. When PREEMPT_RT is enabled, timers which are not explicitely marked to expire in hard interrupt context are deferrred to the soft interrupt. So the regular check would trigger. Change the check, so when PREEMPT_RT is enabled, it is verified that the timers marked for hard interrupt expiry are not tried to be queued for soft interrupt expiry or any of the unmarked and softirq marked is tried to be expired in hard interrupt context. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Thomas Gleixner
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3543ff9fdc |
hrtimer: Provide hrtimer_sleeper_start_expires()
hrtimer_sleepers will gain a scheduling class dependent treatment on PREEMPT_RT. Create a wrapper around hrtimer_start_expires() to make that possible. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Sebastian Andrzej Siewior
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284960c058 |
hrtimer: Consolidate hrtimer_init() + hrtimer_init_sleeper() calls
hrtimer_init_sleeper() calls require prior initialisation of the hrtimer object which is embedded into the hrtimer_sleeper. Combine the initialization and spare a function call. Fixup all call sites. This is also a preparatory change for PREEMPT_RT to do hrtimer sleeper specific initializations of the embedded hrtimer without modifying any of the call sites. No functional change. [ anna-maria: Minor cleanups ] [ tglx: Adopted to the removal of the task argument of hrtimer_init_sleeper() and trivial polishing. Folded a fix from Stephen Rothwell for the vsoc code ] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190726185752.887468908@linutronix.de Signed-off-by: celtare21 <celtare21@gmail.com> |
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Thomas Gleixner
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c7a584ac5e |
hrtimer: Remove task argument from hrtimer_init_sleeper()
All callers hand in 'current' and that's the only task pointer which actually makes sense. Remove the task argument and set current in the function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190726185752.791885290@linutronix.de Signed-off-by: celtare21 <celtare21@gmail.com> |
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Rafael J. Wysocki
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47bce51d8c |
time: hrtimer: Introduce hrtimer_next_event_without()
The next set of changes will need to compute the time to the next hrtimer event over all hrtimers except for the scheduler tick one. To that end introduce a new helper function, hrtimer_next_event_without(), for computing the time until the next hrtimer event over all timers except for one and modify the underlying code in __hrtimer_next_event_base() to prepare it for being called by that new function. No intentional changes in functionality. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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2206c79f32 |
hrtimer: Implement support for softirq based hrtimers
hrtimer callbacks are always invoked in hard interrupt context. Several users in tree require soft interrupt context for their callbacks and achieve this by combining a hrtimer with a tasklet. The hrtimer schedules the tasklet in hard interrupt context and the tasklet callback gets invoked in softirq context later. That's suboptimal and aside of that the real-time patch moves most of the hrtimers into softirq context. So adding native support for hrtimers expiring in softirq context is a valuable extension for both mainline and the RT patch set. Each valid hrtimer clock id has two associated hrtimer clock bases: one for timers expiring in hardirq context and one for timers expiring in softirq context. Implement the functionality to associate a hrtimer with the hard or softirq related clock bases and update the relevant functions to take them into account when the next expiry time needs to be evaluated. Add a check into the hard interrupt context handler functions to check whether the first expiring softirq based timer has expired. If it's expired the softirq is raised and the accounting of softirq based timers to evaluate the next expiry time for programming the timer hardware is skipped until the softirq processing has finished. At the end of the softirq processing the regular processing is resumed. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-29-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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98845d120b |
hrtimer: Make hrtimer_reprogramm() unconditional
hrtimer_reprogram() needs to be available unconditionally for softirq based hrtimers. Move the function and all required struct members out of the CONFIG_HIGH_RES_TIMERS #ifdef. There is no functional change because hrtimer_reprogram() is only invoked when hrtimer_cpu_base.hres_active is true. Making it unconditional increases the text size for the CONFIG_HIGH_RES_TIMERS=n case, but avoids replication of that code for the upcoming softirq based hrtimers support. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-18-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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a2bcdacaaa |
hrtimer: Make hrtimer_cpu_base.next_timer handling unconditional
hrtimer_cpu_base.next_timer stores the pointer to the next expiring timer in a CPU base. This pointer cannot be dereferenced and is solely used to check whether a hrtimer which is removed is the hrtimer which is the first to expire in the CPU base. If this is the case, then the timer hardware needs to be reprogrammed to avoid an extra interrupt for nothing. Again, this is conditional functionality, but there is no compelling reason to make this conditional. As a preparation, hrtimer_cpu_base.next_timer needs to be available unconditonally. Aside of that the upcoming support for softirq based hrtimers requires access to this pointer unconditionally as well, so our motivation is not entirely simplicity based. Make the update of hrtimer_cpu_base.next_timer unconditional and remove the marginal as it's just a store on an already dirtied cacheline. No functional change. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-17-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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033a1cc518 |
hrtimer: Make the remote enqueue check unconditional
hrtimer_cpu_base.expires_next is used to cache the next event armed in the timer hardware. The value is used to check whether an hrtimer can be enqueued remotely. If the new hrtimer is expiring before expires_next, then remote enqueue is not possible as the remote hrtimer hardware cannot be accessed for reprogramming to an earlier expiry time. The remote enqueue check is currently conditional on CONFIG_HIGH_RES_TIMERS=y and hrtimer_cpu_base.hres_active. There is no compelling reason to make this conditional. Move hrtimer_cpu_base.expires_next out of the CONFIG_HIGH_RES_TIMERS=y guarded area and remove the conditionals in hrtimer_check_target(). The check is currently a NOOP for the CONFIG_HIGH_RES_TIMERS=n and the !hrtimer_cpu_base.hres_active case because in these cases nothing updates hrtimer_cpu_base.expires_next yet. This will be changed with later patches which further reduce the #ifdef zoo in this code. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-16-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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118840fad0 |
hrtimer: Make the hrtimer_cpu_base::hres_active field unconditional, to simplify the code
The hrtimer_cpu_base::hres_active_member field depends on CONFIG_HIGH_RES_TIMERS=y currently, and all related functions to this member are conditional as well. To simplify the code make it unconditional and set it to zero during initialization. (This will also help with the upcoming softirq based hrtimers code.) The conditional code sections can be avoided by adding IS_ENABLED(HIGHRES) conditionals into common functions, which ensures dead code elimination. There is no functional change. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-14-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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7dab329ffb |
hrtimer: Make room in 'struct hrtimer_cpu_base'
The upcoming softirq based hrtimers support requires an additional field in the hrtimer_cpu_base struct, which would grow the struct size beyond a cache line. The hrtimer_cpu_base::nr_retries and ::nr_hangs members are solely used for diagnostic output and have no requirement to be 'unsigned int'. Make them 'unsigned short' to create room for the new struct member. No functional change. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-13-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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e0c117cf4c |
hrtimer: Fix kerneldoc syntax for 'struct hrtimer_cpu_base'
The '/**' sequence marks the start of a structure description. Add the missing second asterisk. While at it adapt the ordering of the struct members to the struct definition and document the purpose of expires_next more precisely. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-4-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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celtare21
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f2079facaa |
Revert "BACKPORT: time: hrtimer: Introduce hrtimer_next_event_without()"
This reverts commit
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Anna-Maria Gleixner
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e40bfcab24 |
hrtimer: Store running timer in hrtimer_clock_base
The pointer to the currently running timer is stored in hrtimer_cpu_base before the base lock is dropped and the callback is invoked. This results in two levels of indirections and the upcoming support for softirq based hrtimer requires splitting the "running" storage into soft and hard IRQ context expiry. Storing both in the cpu base would require conditionals in all code paths accessing that information. It's possible to have a per clock base sequence count and running pointer without changing the semantics of the related mechanisms because the timer base pointer cannot be changed while a timer is running the callback. Unfortunately this makes cpu_clock base larger than 32 bytes on 32-bit kernels. Instead of having huge gaps due to alignment, remove the alignment and let the compiler pack CPU base for 32-bit kernels. The resulting cache access patterns are fortunately not really different from the current behaviour. On 64-bit kernels the 64-byte alignment stays and the behaviour is unchanged. This was determined by analyzing the resulting layout and looking at the number of cache lines involved for the frequently used clocks. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-12-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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e78d0467d4 |
hrtimer: Fix hrtimer_start[_range_ns]() function descriptions
The hrtimer_start[_range_ns]() functions start a timer reliably on this CPU only when HRTIMER_MODE_PINNED is set. Furthermore the HRTIMER_MODE_PINNED mode is not considered when a hrtimer is initialized. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-6-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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1f3fa2e99f |
hrtimer: Clean up the 'int clock' parameter of schedule_hrtimeout_range_clock()
schedule_hrtimeout_range_clock() uses an 'int clock' parameter for the clock ID, instead of the customary predefined "clockid_t" type. In hrtimer coding style the canonical variable name for the clock ID is 'clock_id', therefore change the name of the parameter here as well to make it all consistent. While at it, clean up the description for the 'clock_id' and 'mode' function parameters. The clock modes and the clock IDs are not restricted as the comment suggests. Fix the mode description as well for the callers of schedule_hrtimeout_range_clock(). No functional changes intended. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-5-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Thomas Gleixner
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1bee707835 |
hrtimer: Optimize the hrtimer code by using static keys for migration_enable/nohz_active
The hrtimer_cpu_base::migration_enable and ::nohz_active fields were originally introduced to avoid accessing global variables for these decisions. Still that results in a (cache hot) load and conditional branch, which can be avoided by using static keys. Implement it with static keys and optimize for the most critical case of high performance networking which tends to disable the timer migration functionality. No change in functionality. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1801142327490.2371@nanos Link: https://lkml.kernel.org/r/20171221104205.7269-2-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Sebastian Andrzej Siewior
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e899e64d3e |
hrtimer: Introduce HARD expiry mode
On PREEMPT_RT not all hrtimers can be expired in hard interrupt context
even if that is perfectly fine on a PREEMPT_RT=n kernel, e.g. because they
take regular spinlocks. Also for latency reasons PREEMPT_RT tries to defer
most hrtimers' expiry into soft interrupt context.
But there are hrtimers which must be expired in hard interrupt context even
when PREEMPT_RT is enabled:
- hrtimers which must expiry in hard interrupt context, e.g. scheduler,
perf, watchdog related hrtimers
- latency critical hrtimers, e.g. nanosleep, ..., kvm lapic timer
Add a new mode flag HRTIMER_MODE_HARD which allows to mark these timers so
PREEMPT_RT will not move them into softirq expiry mode.
[ tglx: Split out of a larger combo patch. Added changelog ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190726185752.981398465@linutronix.de
Signed-off-by: celtare21 <celtare21@gmail.com>
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Anna-Maria Gleixner
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a5da363d25 |
hrtimer: Add clock bases and hrtimer mode for softirq context
Currently hrtimer callback functions are always executed in hard interrupt context. Users of hrtimers, which need their timer function to be executed in soft interrupt context, make use of tasklets to get the proper context. Add additional hrtimer clock bases for timers which must expire in softirq context, so the detour via the tasklet can be avoided. This is also required for RT, where the majority of hrtimer is moved into softirq hrtimer context. The selection of the expiry mode happens via a mode bit. Introduce HRTIMER_MODE_SOFT and the matching combinations with the ABS/REL/PINNED bits and update the decoding of hrtimer_mode in tracepoints. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-27-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Anna-Maria Gleixner
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425b05a84e |
hrtimer: Clean up 'enum hrtimer_mode'
It's not obvious that the HRTIMER_MODE variants are bit combinations, because all modes are hard coded constants currently. Change it so the bit meanings are clear; and use the symbols for creating modes which combine bits. While at it get rid of the ugly tail comments as well. Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Christoph Hellwig <hch@lst.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-8-anna-maria@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: celtare21 <celtare21@gmail.com> |
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Srinivasarao P
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89c9d6d8aa |
Merge android-4.14.162 (c2bd4f8) into msm-4.14
* refs/heads/tmp-c2bd4f8: Linux 4.14.162 spi: fsl: use platform_get_irq() instead of of_irq_to_resource() gtp: avoid zero size hashtable gtp: fix an use-after-free in ipv4_pdp_find() gtp: fix wrong condition in gtp_genl_dump_pdp() tcp: do not send empty skb from tcp_write_xmit() tcp/dccp: fix possible race __inet_lookup_established() gtp: do not allow adding duplicate tid and ms_addr pdp context sit: do not confirm neighbor when do pmtu update vti: do not confirm neighbor when do pmtu update tunnel: do not confirm neighbor when do pmtu update net/dst: add new function skb_dst_update_pmtu_no_confirm gtp: do not confirm neighbor when do pmtu update ip6_gre: do not confirm neighbor when do pmtu update net: add bool confirm_neigh parameter for dst_ops.update_pmtu vhost/vsock: accept only packets with the right dst_cid udp: fix integer overflow while computing available space in sk_rcvbuf ptp: fix the race between the release of ptp_clock and cdev net/mlxfw: Fix out-of-memory error in mfa2 flash burning net: ena: fix napi handler misbehavior when the napi budget is zero pinctrl: baytrail: Really serialize all register accesses tty/serial: atmel: fix out of range clock divider handling spi: fsl: don't map irq during probe hrtimer: Annotate lockless access to timer->state net: icmp: fix data-race in cmp_global_allow() net: add a READ_ONCE() in skb_peek_tail() inetpeer: fix data-race in inet_putpeer / inet_putpeer netfilter: bridge: make sure to pull arp header in br_nf_forward_arp() 6pack,mkiss: fix possible deadlock netfilter: ebtables: compat: reject all padding in matches/watchers filldir[64]: remove WARN_ON_ONCE() for bad directory entries Make filldir[64]() verify the directory entry filename is valid perf strbuf: Remove redundant va_end() in strbuf_addv() bonding: fix active-backup transition after link failure ALSA: hda - Downgrade error message for single-cmd fallback netfilter: nf_queue: enqueue skbs with NULL dst net, sysctl: Fix compiler warning when only cBPF is present x86/mce: Fix possibly incorrect severity calculation on AMD userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK kernel: sysctl: make drop_caches write-only ocfs2: fix passing zero to 'PTR_ERR' warning s390/cpum_sf: Check for SDBT and SDB consistency libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h s390/zcrypt: handle new reply code FILTERED_BY_HYPERVISOR perf regs: Make perf_reg_name() return "unknown" instead of NULL perf script: Fix brstackinsn for AUXTRACE cdrom: respect device capabilities during opening action scripts/kallsyms: fix definitely-lost memory leak apparmor: fix unsigned len comparison with less than zero gpio: mpc8xxx: Don't overwrite default irq_set_type callback scsi: target: iscsi: Wait for all commands to finish before freeing a session scsi: iscsi: Don't send data to unbound connection scsi: NCR5380: Add disconnect_mask module parameter scsi: scsi_debug: num_tgts must be >= 0 scsi: ufs: Fix error handing during hibern8 enter scsi: pm80xx: Fix for SATA device discovery HID: Improve Windows Precision Touchpad detection. libnvdimm/btt: fix variable 'rc' set but not used HID: logitech-hidpp: Silence intermittent get_battery_capacity errors bcache: at least try to shrink 1 node in bch_mca_scan() clk: pxa: fix one of the pxa RTC clocks scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE powerpc/security: Fix wrong message when RFI Flush is disable powerpc/pseries/cmm: Implement release() function for sysfs device scsi: ufs: fix potential bug which ends in system hang scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long irqchip: ingenic: Error out if IRQ domain creation failed irqchip/irq-bcm7038-l1: Enable parent IRQ if necessary clk: qcom: Allow constant ratio freq tables for rcg f2fs: fix to update dir's i_pino during cross_rename scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow scsi: tracing: Fix handling of TRANSFER LENGTH == 0 for READ(6) and WRITE(6) jbd2: Fix statistics for the number of logged blocks ext4: update direct I/O read lock pattern for IOCB_NOWAIT powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning powerpc/security/book3s64: Report L1TF status in sysfs clocksource/drivers/asm9260: Add a check for of_clk_get dma-debug: add a schedule point in debug_dma_dump_mappings() powerpc/tools: Don't quote $objdump in scripts powerpc/pseries: Don't fail hash page table insert for bolted mapping powerpc/pseries: Mark accumulate_stolen_time() as notrace scsi: csiostor: Don't enable IRQs too early scsi: lpfc: Fix SLI3 hba in loop mode not discovering devices scsi: target: compare full CHAP_A Algorithm strings iommu/tegra-smmu: Fix page tables in > 4 GiB memory Input: atmel_mxt_ts - disable IRQ across suspend scsi: lpfc: Fix locking on mailbox command completion scsi: mpt3sas: Fix clear pending bit in ioctl status scsi: lpfc: Fix discovery failures when target device connectivity bounces ANDROID: serdev: Fix platform device support Conflicts: drivers/scsi/ufs/ufshcd.c kernel/time/hrtimer.c Discarded commit 'kernel: sysctl: make drop_caches write-only' due to vts regression. Change-Id: Ieabdc1178e170d30672e233f43139bb97af9bf80 Signed-off-by: Srinivasarao P <spathi@codeaurora.org> Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org> |
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Greg Kroah-Hartman
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c2bd4f8f0c |
Merge 4.14.162 into android-4.14
Changes in 4.14.162 scsi: lpfc: Fix discovery failures when target device connectivity bounces scsi: mpt3sas: Fix clear pending bit in ioctl status scsi: lpfc: Fix locking on mailbox command completion Input: atmel_mxt_ts - disable IRQ across suspend iommu/tegra-smmu: Fix page tables in > 4 GiB memory scsi: target: compare full CHAP_A Algorithm strings scsi: lpfc: Fix SLI3 hba in loop mode not discovering devices scsi: csiostor: Don't enable IRQs too early powerpc/pseries: Mark accumulate_stolen_time() as notrace powerpc/pseries: Don't fail hash page table insert for bolted mapping powerpc/tools: Don't quote $objdump in scripts dma-debug: add a schedule point in debug_dma_dump_mappings() clocksource/drivers/asm9260: Add a check for of_clk_get powerpc/security/book3s64: Report L1TF status in sysfs powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning ext4: update direct I/O read lock pattern for IOCB_NOWAIT jbd2: Fix statistics for the number of logged blocks scsi: tracing: Fix handling of TRANSFER LENGTH == 0 for READ(6) and WRITE(6) scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow f2fs: fix to update dir's i_pino during cross_rename clk: qcom: Allow constant ratio freq tables for rcg irqchip/irq-bcm7038-l1: Enable parent IRQ if necessary irqchip: ingenic: Error out if IRQ domain creation failed fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences scsi: ufs: fix potential bug which ends in system hang powerpc/pseries/cmm: Implement release() function for sysfs device powerpc/security: Fix wrong message when RFI Flush is disable scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE clk: pxa: fix one of the pxa RTC clocks bcache: at least try to shrink 1 node in bch_mca_scan() HID: logitech-hidpp: Silence intermittent get_battery_capacity errors libnvdimm/btt: fix variable 'rc' set but not used HID: Improve Windows Precision Touchpad detection. scsi: pm80xx: Fix for SATA device discovery scsi: ufs: Fix error handing during hibern8 enter scsi: scsi_debug: num_tgts must be >= 0 scsi: NCR5380: Add disconnect_mask module parameter scsi: iscsi: Don't send data to unbound connection scsi: target: iscsi: Wait for all commands to finish before freeing a session gpio: mpc8xxx: Don't overwrite default irq_set_type callback apparmor: fix unsigned len comparison with less than zero scripts/kallsyms: fix definitely-lost memory leak cdrom: respect device capabilities during opening action perf script: Fix brstackinsn for AUXTRACE perf regs: Make perf_reg_name() return "unknown" instead of NULL s390/zcrypt: handle new reply code FILTERED_BY_HYPERVISOR libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h s390/cpum_sf: Check for SDBT and SDB consistency ocfs2: fix passing zero to 'PTR_ERR' warning kernel: sysctl: make drop_caches write-only userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK x86/mce: Fix possibly incorrect severity calculation on AMD net, sysctl: Fix compiler warning when only cBPF is present netfilter: nf_queue: enqueue skbs with NULL dst ALSA: hda - Downgrade error message for single-cmd fallback bonding: fix active-backup transition after link failure perf strbuf: Remove redundant va_end() in strbuf_addv() Make filldir[64]() verify the directory entry filename is valid filldir[64]: remove WARN_ON_ONCE() for bad directory entries netfilter: ebtables: compat: reject all padding in matches/watchers 6pack,mkiss: fix possible deadlock netfilter: bridge: make sure to pull arp header in br_nf_forward_arp() inetpeer: fix data-race in inet_putpeer / inet_putpeer net: add a READ_ONCE() in skb_peek_tail() net: icmp: fix data-race in cmp_global_allow() hrtimer: Annotate lockless access to timer->state spi: fsl: don't map irq during probe tty/serial: atmel: fix out of range clock divider handling pinctrl: baytrail: Really serialize all register accesses net: ena: fix napi handler misbehavior when the napi budget is zero net/mlxfw: Fix out-of-memory error in mfa2 flash burning ptp: fix the race between the release of ptp_clock and cdev udp: fix integer overflow while computing available space in sk_rcvbuf vhost/vsock: accept only packets with the right dst_cid net: add bool confirm_neigh parameter for dst_ops.update_pmtu ip6_gre: do not confirm neighbor when do pmtu update gtp: do not confirm neighbor when do pmtu update net/dst: add new function skb_dst_update_pmtu_no_confirm tunnel: do not confirm neighbor when do pmtu update vti: do not confirm neighbor when do pmtu update sit: do not confirm neighbor when do pmtu update gtp: do not allow adding duplicate tid and ms_addr pdp context tcp/dccp: fix possible race __inet_lookup_established() tcp: do not send empty skb from tcp_write_xmit() gtp: fix wrong condition in gtp_genl_dump_pdp() gtp: fix an use-after-free in ipv4_pdp_find() gtp: avoid zero size hashtable spi: fsl: use platform_get_irq() instead of of_irq_to_resource() Linux 4.14.162 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
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Eric Dumazet
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a51afeedc6 |
hrtimer: Annotate lockless access to timer->state
commit 56144737e67329c9aaed15f942d46a6302e2e3d8 upstream. syzbot reported various data-race caused by hrtimer_is_queued() reading timer->state. A READ_ONCE() is required there to silence the warning. Also add the corresponding WRITE_ONCE() when timer->state is set. In remove_hrtimer() the hrtimer_is_queued() helper is open coded to avoid loading timer->state twice. KCSAN reported these cases: BUG: KCSAN: data-race in __remove_hrtimer / tcp_pacing_check write to 0xffff8880b2a7d388 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880b2a7d388 of 1 bytes by task 24652 on cpu 1: tcp_pacing_check net/ipv4/tcp_output.c:2235 [inline] tcp_pacing_check+0xba/0x130 net/ipv4/tcp_output.c:2225 tcp_xmit_retransmit_queue+0x32c/0x5a0 net/ipv4/tcp_output.c:3044 tcp_xmit_recovery+0x7c/0x120 net/ipv4/tcp_input.c:3558 tcp_ack+0x17b6/0x3170 net/ipv4/tcp_input.c:3717 tcp_rcv_established+0x37e/0xf50 net/ipv4/tcp_input.c:5696 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 BUG: KCSAN: data-race in __remove_hrtimer / __tcp_ack_snd_check write to 0xffff8880a3a65588 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 read to 0xffff8880a3a65588 of 1 bytes by task 22891 on cpu 1: __tcp_ack_snd_check+0x415/0x4f0 net/ipv4/tcp_input.c:5265 tcp_ack_snd_check net/ipv4/tcp_input.c:5287 [inline] tcp_rcv_established+0x750/0xf50 net/ipv4/tcp_input.c:5708 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 __sys_sendto+0x21f/0x320 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto net/socket.c:1960 [inline] __x64_sys_sendto+0x89/0xb0 net/socket.c:1960 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 24652 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ tglx: Added comments ] Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191106174804.74723-1-edumazet@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Prasad Sodagudi
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c96a62baf3 |
Revert "cpuidle: Fix cpu frequent exits from low power mode"
This reverts 'commit
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Prasad Sodagudi
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ae04811d41 |
cpuidle: Fix cpu frequent exits from low power mode
Following upstream changes are reverted due cpu low power mode use cases regressions. 'commit |
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Isaac J. Manjarres
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b2c8463039 |
Merge android-4.14-p.61 (b7e55e8) into msm-4.14
* remotes/origin/tmp-b7e55e8:
Linux 4.14.61
scsi: sg: fix minor memory leak in error path
drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats
crypto: padlock-aes - Fix Nano workaround data corruption
RDMA/uverbs: Expand primary and alt AV port checks
iwlwifi: add more card IDs for 9000 series
userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails
audit: fix potential null dereference 'context->module.name'
kvm: x86: vmx: fix vpid leak
x86/entry/64: Remove %ebx handling from error_entry/exit
x86/apic: Future-proof the TSC_DEADLINE quirk for SKX
virtio_balloon: fix another race between migration and ballooning
net: socket: fix potential spectre v1 gadget in socketcall
can: ems_usb: Fix memory leak on ems_usb_disconnect()
squashfs: more metadata hardenings
squashfs: more metadata hardening
net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager
rxrpc: Fix user call ID check in rxrpc_service_prealloc_one
net: stmmac: Fix WoL for PCI-based setups
netlink: Fix spectre v1 gadget in netlink_create()
net: dsa: Do not suspend/resume closed slave_dev
ipv4: frags: handle possible skb truesize change
inet: frag: enforce memory limits earlier
bonding: avoid lockdep confusion in bond_get_stats()
Linux 4.14.60
tcp: add one more quick ack after after ECN events
tcp: refactor tcp_ecn_check_ce to remove sk type cast
tcp: do not aggressively quick ack after ECN events
tcp: add max_quickacks param to tcp_incr_quickack and tcp_enter_quickack_mode
tcp: do not force quickack when receiving out-of-order packets
netlink: Don't shift with UB on nlk->ngroups
netlink: Do not subscribe to non-existent groups
xen-netfront: wait xenbus state change when load module manually
tcp_bbr: fix bw probing to raise in-flight data for very small BDPs
NET: stmmac: align DMA stuff to largest cache line length
net: mdio-mux: bcm-iproc: fix wrong getter and setter pair
net: lan78xx: fix rx handling before first packet is send
net: fix amd-xgbe flow-control issue
net: ena: Fix use of uninitialized DMA address bits field
ipv4: remove BUG_ON() from fib_compute_spec_dst
net: dsa: qca8k: Allow overwriting CPU port setting
net: dsa: qca8k: Add QCA8334 binding documentation
net: dsa: qca8k: Enable RXMAC when bringing up a port
net: dsa: qca8k: Force CPU port to its highest bandwidth
RDMA/uverbs: Protect from attempts to create flows on unsupported QP
usb: gadget: udc: renesas_usb3: should remove debugfs
ovl: Sync upper dirty data when syncing overlayfs
PCI: xgene: Remove leftover pci_scan_child_bus() call
PCI: pciehp: Assume NoCompl+ for Thunderbolt ports
ext4: fix check to prevent initializing reserved inodes
ext4: check for allocation block validity with block group locked
ext4: fix inline data updates with checksums enabled
squashfs: be more careful about metadata corruption
random: mix rdrand with entropy sent in from userspace
block: reset bi_iter.bi_done after splitting bio
blkdev: __blkdev_direct_IO_simple: fix leak in error case
block: bio_iov_iter_get_pages: fix size of last iovec
drm/dp/mst: Fix off-by-one typo when dump payload table
drm/atomic-helper: Drop plane->fb references only for drm_atomic_helper_shutdown()
drm: Add DP PSR2 sink enable bit
ASoC: topology: Add missing clock gating parameter when parsing hw_configs
ASoC: topology: Fix bclk and fsync inversion in set_link_hw_format()
media: si470x: fix __be16 annotations
media: atomisp: compat32: fix __user annotations
scsi: cxlflash: Avoid clobbering context control register value
scsi: cxlflash: Synchronize reset and remove ops
scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
scsi: scsi_dh: replace too broad "TP9" string with the exact models
regulator: Don't return or expect -errno from of_map_mode()
media: omap3isp: fix unbalanced dma_iommu_mapping
crypto: authenc - don't leak pointers to authenc keys
crypto: authencesn - don't leak pointers to authenc keys
usb: hub: Don't wait for connect state at resume for powered-off ports
microblaze: Fix simpleImage format generation
soc: imx: gpcv2: Do not pass static memory as platform data
serial: core: Make sure compiler barfs for 16-byte earlycon names
staging: lustre: ldlm: free resource when ldlm_lock_create() fails.
staging: lustre: llite: correct removexattr detection
staging: vchiq_core: Fix missing semaphore release in error case
audit: allow not equal op for audit by executable
rsi: fix nommu_map_sg overflow kernel panic
rsi: Fix 'invalid vdd' warning in mmc
ipconfig: Correctly initialise ic_nameservers
drm/gma500: fix psb_intel_lvds_mode_valid()'s return type
igb: Fix queue selection on MAC filters on i210
arm64: defconfig: Enable Rockchip io-domain driver
nvme: lightnvm: add granby support
memory: tegra: Apply interrupts mask per SoC
memory: tegra: Do not handle spurious interrupts
delayacct: Use raw_spinlocks
stop_machine: Use raw spinlocks
backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction
dt-bindings: net: meson-dwmac: new compatible name for AXG SoC
net: hns3: Fixes the out of bounds access in hclge_map_tqp
spi: meson-spicc: Fix error handling in meson_spicc_probe()
dt-bindings: pinctrl: meson: add support for the Meson8m2 SoC
mmc: pwrseq: Use kmalloc_array instead of stack VLA
mmc: dw_mmc: update actual clock for mmc debugfs
ALSA: hda/ca0132: fix build failure when a local macro is defined
drm/atomic: Handling the case when setting old crtc for plane
media: siano: get rid of __le32/__le16 cast warnings
f2fs: avoid fsync() failure caused by EAGAIN in writepage()
bpf: fix references to free_bpf_prog_info() in comments
thermal: exynos: fix setting rising_threshold for Exynos5433
staging: lustre: o2iblnd: Fix FastReg map/unmap for MLX5
staging: lustre: o2iblnd: fix race at kiblnd_connect_peer
scsi: qedf: Set the UNLOADING flag when removing a vport
scsi: hisi_sas: config ATA de-reset as an constrained command for v3 hw
scsi: megaraid: silence a static checker bug
scsi: 3w-xxxx: fix a missing-check bug
scsi: 3w-9xxx: fix a missing-check bug
bnxt_en: Check unsupported speeds in bnxt_update_link() on PF only.
perf: fix invalid bit in diagnostic entry
s390/cpum_sf: Add data entry sizes to sampling trailer entry
brcmfmac: Add support for bcm43364 wireless chipset
mtd: rawnand: fsl_ifc: fix FSL NAND driver to read all ONFI parameter pages
media: saa7164: Fix driver name in debug output
media: media-device: fix ioctl function types
ACPI / LPSS: Only call pwm_add_table() for Bay Trail PWM if PMIC HRV is 2
libata: Fix command retry decision
media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu_open()
net: phy: phylink: Release link GPIO
dma-iommu: Fix compilation when !CONFIG_IOMMU_DMA
tty: Fix data race in tty_insert_flip_string_fixed_flag
i40e: free the skb after clearing the bitlock
nvmem: properly handle returned value nvmem_reg_read
ARM: dts: sh73a0: Add missing interrupt-affinity to PMU node
ARM: dts: emev2: Add missing interrupt-affinity to PMU node
ARM: dts: stih407-pinctrl: Fix complain about IRQ_TYPE_NONE usage
EDAC, altera: Fix ARM64 build warning
HID: i2c-hid: check if device is there before really probing
powerpc/embedded6xx/hlwd-pic: Prevent interrupts from being handled by Starlet
drm/amdgpu: Remove VRAM from shared bo domains.
drm/radeon: fix mode_valid's return type
arm64: dts: renesas: salvator-common: use audio-graph-card for Sound
HID: hid-plantronics: Re-resend Update to map button for PTT products
arm64: cmpwait: Clear event register before arming exclusive monitor
media: atomisp: ov2680: don't declare unused vars
ALSA: usb-audio: Apply rate limit to warning messages in URB complete callback
net: ethernet: ti: cpsw-phy-sel: check bus_find_device() ret value
media: smiapp: fix timeout checking in smiapp_read_nvm
ixgbevf: fix MAC address changes through ixgbevf_set_mac()
md: fix NULL dereference of mddev->pers in remove_and_add_spares()
md/raid1: add error handling of read error from FailFast device
regulator: pfuze100: add .is_enable() for pfuze100_swb_regulator_ops
ALSA: emu10k1: Rate-limit error messages about page errors
rtc: tps65910: fix possible race condition
rtc: vr41xx: fix possible race condition
rtc: tps6586x: fix possible race condition
Bluetooth: btusb: add ID for LiteOn 04ca:301a
drm/nouveau/fifo/gk104-: poll for runlist update completion
scsi: zfcp: assert that the ERP lock is held when tracing a recovery trigger
scsi: ufs: fix exception event handling
scsi: ufs: ufshcd: fix possible unclocked register access
fscrypt: use unbound workqueue for decryption
net: hns3: Fix the missing client list node initialization
spi: Add missing pm_runtime_put_noidle() after failed get
drivers/perf: arm-ccn: don't log to dmesg in event_init
ima: based on policy verify firmware signatures (pre-allocated buffer)
mwifiex: correct histogram data with appropriate index
net: dsa: qca8k: Add support for QCA8334 switch
PCI: pciehp: Request control of native hotplug only if supported
bpf: powerpc64: pad function address loads with NOPs
pinctrl: at91-pio4: add missing of_node_put
powerpc/8xx: fix invalid register expression in head_8xx.S
spi: sh-msiof: Fix setting SIRMDR1.SYNCAC to match SITMDR1.SYNCAC
powerpc: Add __printf verification to prom_printf
powerpc/powermac: Mark variable x as unused
powerpc/powermac: Add missing prototype for note_bootable_part()
powerpc/chrp/time: Make some functions static, add missing header include
powerpc/32: Add a missing include header
ath: Add regulatory mapping for Bahamas
ath: Add regulatory mapping for Bermuda
ath: Add regulatory mapping for Serbia
ath: Add regulatory mapping for Tanzania
ath: Add regulatory mapping for Uganda
ath: Add regulatory mapping for APL2_FCCA
ath: Add regulatory mapping for APL13_WORLD
ath: Add regulatory mapping for ETSI8_WORLD
ath: Add regulatory mapping for FCC3_ETSIC
nvme-pci: Fix AER reset handling
nvme-rdma: stop admin queue before freeing it
PCI: Prevent sysfs disable of device while driver is attached
PM / wakeup: Make s2idle_lock a RAW_SPINLOCK
x86/microcode: Make the late update update_lock a raw lock for RT
btrfs: qgroup: Finish rescan when hit the last leaf of extent tree
btrfs: add barriers to btrfs_sync_log before log_commit_wait wakeups
Btrfs: don't BUG_ON() in btrfs_truncate_inode_items()
Btrfs: don't return ino to ino cache if inode item removal fails
media: videobuf2-core: don't call memop 'finish' when queueing
media: tw686x: Fix incorrect vb2_mem_ops GFP flags
net: hns3: Fixes the init of the VALID BD info in the descriptor
wlcore: sdio: check for valid platform device data before suspend
mwifiex: handle race during mwifiex_usb_disconnect
mfd: cros_ec: Fail early if we cannot identify the EC
ASoC: dpcm: fix BE dai not hw_free and shutdown
Bluetooth: btusb: Add a new Realtek 8723DE ID 2ff8:b011
Bluetooth: hci_qca: Fix "Sleep inside atomic section" warning
iwlwifi: pcie: fix race in Rx buffer allocator
btrfs: balance dirty metadata pages in btrfs_finish_ordered_io
PCI: Fix devm_pci_alloc_host_bridge() memory leak
selftests: intel_pstate: return Kselftest Skip code for skipped tests
selftests: memfd: return Kselftest Skip code for skipped tests
selftests/intel_pstate: Improve test, minor fixes
perf/x86/intel/uncore: Correct fixed counter index check for NHM
perf/x86/intel/uncore: Correct fixed counter index check in generic code
usbip: dynamically allocate idev by nports found in sysfs
usbip: usbip_detach: Fix memory, udev context and udev leak
block, bfq: remove wrong lock in bfq_requests_merged
f2fs: fix race in between GC and atomic open
f2fs: fix to detect failure of dquot_initialize
f2fs: Fix deadlock in shutdown ioctl
f2fs: fix to wait page writeback during revoking atomic write
f2fs: fix to don't trigger writeback during recovery
f2fs: fix error path of move_data_page
disable loading f2fs module on PAGE_SIZE > 4KB
pnfs: Don't release the sequence slot until we've processed layoutget on open
netfilter: nf_tables: check msg_type before nft_trans_set(trans)
lightnvm: pblk: warn in case of corrupted write buffer
RDMA/mad: Convert BUG_ONs to error flows
powerpc/64s: Fix compiler store ordering to SLB shadow area
hvc_opal: don't set tb_ticks_per_usec in udbg_init_opal_common()
powerpc/eeh: Fix use-after-release of EEH driver
powerpc/64s: Add barrier_nospec
powerpc/lib: Adjust .balign inside string functions for PPC32
infiniband: fix a possible use-after-free bug
e1000e: Ignore TSYNCRXCTL when getting I219 clock attributes
ceph: fix alignment of rasize
bpf, arm32: fix inconsistent naming about emit_a32_lsr_{r64,i64}
printk: drop in_nmi check from printk_safe_flush_on_panic()
watchdog: da9063: Fix updating timeout value
irqchip/ls-scfg-msi: Map MSIs in the iommu
netfilter: ipset: List timing out entries with "timeout 1" instead of zero
netfilter: ipset: forbid family for hash:mac sets
perf tools: Fix pmu events parsing rule
rtc: ensure rtc_set_alarm fails when alarms are not supported
mm/slub.c: add __printf verification to slab_err()
mm: vmalloc: avoid racy handling of debugobjects in vunmap
mm: /proc/pid/pagemap: hide swap entries from unprivileged users
kernel/hung_task.c: show all hung tasks before panic
vfio/type1: Fix task tracking for QEMU vCPU hotplug
vfio/mdev: Check globally for duplicate devices
vfio: platform: Fix reset module leak in error path
nfsd: fix potential use-after-free in nfsd4_decode_getdeviceinfo
NFSv4.1: Fix the client behaviour on NFS4ERR_SEQ_FALSE_RETRY
ALSA: fm801: add error handling for snd_ctl_add
ALSA: emu10k1: add error handling for snd_ctl_add
skip LAYOUTRETURN if layout is invalid
hv_netvsc: fix network namespace issues with VF support
xen/netfront: raise max number of slots in xennet_get_responses()
kcov: ensure irq code sees a valid area
mlxsw: spectrum_switchdev: Fix port_vlan refcounting
arm64: fix vmemmap BUILD_BUG_ON() triggering on !vmemmap setups
tracing: Quiet gcc warning about maybe unused link variable
tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
kthread, tracing: Don't expose half-written comm when creating kthreads
tracing: Fix possible double free in event_enable_trigger_func()
tracing: Fix double free of event_trigger_data
delayacct: fix crash in delayacct_blkio_end() after delayacct init failure
kvm, mm: account shadow page tables to kmemcg
Input: elan_i2c - add another ACPI ID for Lenovo Ideapad 330-15AST
Input: i8042 - add Lenovo LaVie Z to the i8042 reset list
Input: elan_i2c - add ACPI ID for lenovo ideapad 330
spi: spi-s3c64xx: Fix system resume support
drivers/infiniband/ulp/srpt/ib_srpt.c: fix build with gcc-4.4.4
IB/srpt: Fix an out-of-bounds stack access in srpt_zerolength_write()
drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4
RDMA/core: Avoid that ib_drain_qp() triggers an out-of-bounds stack access
i2c: core: decrease reference count of device node in i2c_unregister_device
fork: unconditionally clear stack on fork
Linux 4.14.59
turn off -Wattribute-alias
can: m_can.c: fix setup of CCCR register: clear CCCR NISO bit before checking can.ctrlmode
can: peak_canfd: fix firmware < v3.3.0: limit allocation to 32-bit DMA addr only
can: xilinx_can: fix RX overflow interrupt not being enabled
can: xilinx_can: fix incorrect clear of non-processed interrupts
can: xilinx_can: keep only 1-2 frames in TX FIFO to fix TX accounting
can: xilinx_can: fix device dropping off bus on RX overrun
can: xilinx_can: fix recovery from error states not being propagated
can: xilinx_can: fix power management handling
can: xilinx_can: fix RX loop if RXNEMP is asserted without RXOK
driver core: Partially revert "driver core: correct device's shutdown order"
usb: gadget: f_fs: Only return delayed status when len is 0
usb: dwc2: Fix DMA alignment to start at allocated boundary
usb: core: handle hub C_PORT_OVER_CURRENT condition
usb: cdc_acm: Add quirk for Castles VEGA3000
staging: speakup: fix wraparound in uaccess length check
tcp: add tcp_ooo_try_coalesce() helper
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
tcp: free batches of packets in tcp_prune_ofo_queue()
tcp: do not delay ACK in DCTCP upon CE status change
tcp: do not cancel delay-AcK on DCTCP special ACK
tcp: helpers to send special DCTCP ack
tcp: fix dctcp delayed ACK schedule
vxlan: fix default fdb entry netlink notify ordering during netdev create
vxlan: make netlink notify in vxlan_fdb_destroy optional
vxlan: add new fdb alloc and create helpers
rtnetlink: add rtnl_link_state check in rtnl_configure_link
sock: fix sg page frag coalescing in sk_alloc_sg
net: phy: consider PHY_IGNORE_INTERRUPT in phy_start_aneg_priv
multicast: do not restore deleted record source filter mode to new one
net/ipv6: Fix linklocal to global address with VRF
net/mlx5e: Fix quota counting in aRFS expire flow
net/mlx5e: Don't allow aRFS for encapsulated packets
net/mlx5: Adjust clock overflow work period
net: skb_segment() should not return NULL
net/mlx4_core: Save the qpn from the input modifier in RST2INIT wrapper
ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull
ip: hash fragments consistently
bonding: set default miimon value for non-arp modes if not set
drm/nouveau: Set DRIVER_ATOMIC cap earlier to fix debugfs
drm/nouveau/drm/nouveau: Fix runtime PM leak in nv50_disp_atomic_commit()
KVM: PPC: Check if IOMMU page is contained in the pinned physical page
xen/PVH: Set up GS segment for stack canary
MIPS: Fix off-by-one in pci_resource_to_user()
MIPS: ath79: fix register address in ath79_ddr_wb_flush()
Revert "cifs: Fix slab-out-of-bounds in send_set_info() on SMB2 ACE setting"
ANDROID: verity: really fix android-verity Kconfig
tcp: add tcp_ooo_try_coalesce() helper
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
tcp: free batches of packets in tcp_prune_ofo_queue()
x86_64_cuttlefish_defconfig: Enable android-verity
x86_64_cuttlefish_defconfig: enable verity cert
ANDROID: android-verity: Fix broken parameter handling.
ANDROID: android-verity: Make it work with newer kernels
ANDROID: android-verity: Add API to verify signature with builtin keys.
ANDROID: verity: fix android-verity Kconfig dependencies
Linux 4.14.58
xhci: Fix perceived dead host due to runtime suspend race with event handler
powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle)
cxl_getfile(): fix double-iput() on alloc_file() failures
alpha: fix osf_wait4() breakage
net: usb: asix: replace mii_nway_restart in resume path
ipv6: make DAD fail with enhanced DAD when nonce length differs
net: systemport: Fix CRC forwarding check for SYSTEMPORT Lite
net/mlx4_en: Don't reuse RX page when XDP is set
hv_netvsc: Fix napi reschedule while receive completion is busy
tg3: Add higher cpu clock for 5762.
qmi_wwan: add support for Quectel EG91
ptp: fix missing break in switch
net: phy: fix flag masking in __set_phy_supported
net/ipv4: Set oif in fib_compute_spec_dst
skbuff: Unconditionally copy pfmemalloc in __skb_clone()
net: Don't copy pfmemalloc flag in __copy_skb_header()
net: diag: Don't double-free TCP_NEW_SYN_RECV sockets in tcp_abort
lib/rhashtable: consider param->min_size when setting initial table size
ipv6: ila: select CONFIG_DST_CACHE
ipv6: fix useless rol32 call on hash
ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns
gen_stats: Fix netlink stats dumping in the presence of padding
drm/nouveau: Avoid looping through fake MST connectors
drm/nouveau: Use drm_connector_list_iter_* for iterating connectors
drm/i915: Fix hotplug irq ack on i965/g4x
stop_machine: Disable preemption when waking two stopper threads
vfio/spapr: Use IOMMU pageshift rather than pagesize
vfio/pci: Fix potential Spectre v1
cpufreq: intel_pstate: Register when ACPI PCCH is present
mm/huge_memory.c: fix data loss when splitting a file pmd
mm: memcg: fix use after free in mem_cgroup_iter()
ARC: mm: allow mprotect to make stack mappings executable
ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs
ARC: Fix CONFIG_SWAP
ARCv2: [plat-hsdk]: Save accl reg pair by default
ALSA: hda: add mute led support for HP ProBook 455 G5
ALSA: hda/realtek - Add Panasonic CF-SZ6 headset jack quirk
ALSA: rawmidi: Change resized buffers atomically
fat: fix memory allocation failure handling of match_strdup()
x86/MCE: Remove min interval polling limitation
x86/events/intel/ds: Fix bts_interrupt_threshold alignment
x86/apm: Don't access __preempt_count with zeroed fs
KVM/Eventfd: Avoid crash when assign and deassign specific eventfd in parallel.
scsi: sd_zbc: Fix variable type and bogus comment
ANDROID: uid_sys_stats: Replace tasklist lock with RCU in uid_cputime_show
Linux 4.14.57
string: drop __must_check from strscpy() and restore strscpy() usages in cgroup
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Add HYP per-cpu accessors
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Add global mitigation state accessor
arm64: Add 'ssbd' command-line option
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
arm/arm64: smccc: Add SMCCC-specific return codes
KVM: arm64: Avoid storing the vcpu pointer on the stack
KVM: arm/arm64: Do not use kern_hyp_va() with kvm_vgic_global_state
arm64: alternatives: Add dynamic patching feature
KVM: arm64: Stop save/restoring host tpidr_el1 on VHE
arm64: alternatives: use tpidr_el2 on VHE hosts
KVM: arm64: Change hyp_panic()s dependency on tpidr_el2
KVM: arm/arm64: Convert kvm_host_cpu_state to a static per-cpu allocation
KVM: arm64: Store vcpu on the stack during __guest_enter()
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
rds: avoid unenecessary cong_update in loop transport
bdi: Fix another oops in wb_workfn()
netfilter: ipv6: nf_defrag: drop skb dst before queueing
nsh: set mac len based on inner packet
autofs: fix slab out of bounds read in getname_kernel()
tls: Stricter error checking in zerocopy sendmsg path
KEYS: DNS: fix parsing multiple options
reiserfs: fix buffer overflow with long warning messages
netfilter: ebtables: reject non-bridge targets
PCI: hv: Disable/enable IRQs rather than BH in hv_compose_msi_msg()
block: do not use interruptible wait anywhere
mtd: rawnand: denali_dt: set clk_x_rate to 200 MHz unconditionally
crypto: af_alg - Initialize sg_num_bytes in error code path
clocksource: Initialize cs->wd_list
media: rc: oops in ir_timer_keyup after device unplug
xhci: Fix USB3 NULL pointer dereference at logical disconnect.
net: lan78xx: Fix race in tx pending skb size calculation
rtlwifi: rtl8821ae: fix firmware is not ready to run
rtlwifi: Fix kernel Oops "Fw download fail!!"
net: cxgb3_main: fix potential Spectre v1
VSOCK: fix loopback on big-endian systems
vhost_net: validate sock before trying to put its fd
tcp: prevent bogus FRTO undos with non-SACK flows
tcp: fix Fast Open key endianness
strparser: Remove early eaten to fix full tcp receive buffer stall
stmmac: fix DMA channel hang in half-duplex mode
r8152: napi hangup fix after disconnect
qmi_wwan: add support for the Dell Wireless 5821e module
qed: Limit msix vectors in kdump kernel to the minimum required count.
qed: Fix use of incorrect size in memcpy call.
qed: Fix setting of incorrect eswitch mode.
qede: Adverstise software timestamp caps when PHC is not available.
net/tcp: Fix socket lookups with SO_BINDTODEVICE
net: sungem: fix rx checksum support
net_sched: blackhole: tell upper qdisc about dropped packets
net/packet: fix use-after-free
net: mvneta: fix the Rx desc DMA address in the Rx path
net/mlx5: Fix wrong size allocation for QoS ETC TC regitster
net/mlx5: Fix required capability for manipulating MPFS
net/mlx5: Fix incorrect raw command length parsing
net/mlx5: Fix command interface race in polling mode
net/mlx5: E-Switch, Avoid setup attempt if not being e-switch manager
net/mlx5e: Don't attempt to dereference the ppriv struct if not being eswitch manager
net/mlx5e: Avoid dealing with vport representors if not being e-switch manager
net: macb: Fix ptp time adjustment for large negative delta
net: fix use-after-free in GRO with ESP
net: dccp: switch rx_tstamp_last_feedback to monotonic clock
net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
ixgbe: split XDP_TX tail and XDP_REDIRECT map flushing
ipvlan: fix IFLA_MTU ignored on NEWLINK
ipv6: sr: fix passing wrong flags to crypto_alloc_shash()
hv_netvsc: split sub-channel setup into async and sync
atm: zatm: Fix potential Spectre v1
atm: Preserve value of skb->truesize when accounting to vcc
alx: take rtnl before calling __alx_open from resume
crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
crypto: crypto4xx - remove bad list_del
PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference
bcm63xx_enet: do not write to random DMA channel on BCM6345
bcm63xx_enet: correct clock usage
ocfs2: ip_alloc_sem should be taken in ocfs2_get_block()
ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent
xprtrdma: Fix corner cases when handling device removal
cpufreq / CPPC: Set platform specific transition_delay_us
Btrfs: fix duplicate extents after fsync of file with prealloc extents
x86/paravirt: Make native_save_fl() extern inline
x86/asm: Add _ASM_ARG* constants for argument registers to <asm/asm.h>
compiler-gcc.h: Add __attribute__((gnu_inline)) to all inline declarations
ANDROID: Add hold functionality to schedtune CPU boost
ANDROID: sched/rt: Add schedtune accounting to rt task enqueue/dequeue
UPSTREAM: cpuidle: menu: Avoid selecting shallow states with stopped tick
UPSTREAM: cpuidle: menu: Refine idle state selection for running tick
UPSTREAM: sched: idle: Select idle state before stopping the tick
BACKPORT: time: hrtimer: Introduce hrtimer_next_event_without()
BACKPORT: time: tick-sched: Split tick_nohz_stop_sched_tick()
UPSTREAM: cpuidle: Return nohz hint from cpuidle_select()
UPSTREAM: jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC
UPSTREAM: sched: idle: Do not stop the tick before cpuidle_idle_call()
BACKPORT: sched: idle: Do not stop the tick upfront in the idle loop
BACKPORT: time: tick-sched: Reorganize idle tick management code
ANDROID: sched/fair: fix a warning
ANDROID: sched/walt: Fix compilation issue for x86_64
ANDROID: mnt: Fix next_descendent
ANDROID: sched/events: Introduce util_est trace events
ANDROID: sched/fair: schedtune: update before schedutil
FROMLIST: sched/fair: add support to tune PELT ramp/decay timings
BACKPORT: sched/fair: Update util_est before updating schedutil
BACKPORT: sched/fair: Update util_est only on util_avg updates
BACKPORT: sched/fair: Use util_est in LB and WU paths
BACKPORT: sched/fair: Add util_est on top of PELT
ANDROID: sched/fair: Cleanup cpu_util{_wake}()
ANDROID: sched: Update max cpu capacity in case of max frequency constraints
ANDROID: arm: enable max frequency capping
ANDROID: arm64: enable max frequency capping
ANDROID: implement max frequency capping
ANDROID: sched/fair: add arch scaling function for max frequency capping
ANDROID: trace: Add WALT util signal to trace event sched_load_cfs_rq
ANDROID: sched, trace: Remove trace event sched_load_avg_cpu
ANDROID: Rename and move include/linux/sched_energy.h
ANDROID: Adjust juno energy model
ANDROID: Check equality of max cap state cap and cpu scale
ANDROID: Move energy model init call into arch_topology driver
ANDROID: Streamline sched_domain_energy_f functions
ANDROID: Separate cpu_scale and energy model setup
ANDROID: update_group_capacity for single cpu in cluster
ANDROID: sched/fair: return idle CPU immediately for prefer_idle
ANDROID: sched/fair: add idle state filter to prefer_idle case
ANDROID: sched/fair: remove order from CPU selection
ANDROID: sched/fair: unify spare capacity calculation
ANDROID:sched/fair: prefer energy efficient CPUs for !prefer_idle tasks
ANDROID: sched/fair: fix CPU selection for non latency sensitive tasks
ANDROID: sched/fair: Also do misfit in overloaded groups
ANDROID: sched/fair: Don't balance misfits if it would overload local group
ANDROID: sched/fair: Attempt to improve throughput for asym cap systems
FROMLIST: sched/fair: Don't move tasks to lower capacity cpus unless necessary
FROMLIST: sched/core: Disable SD_PREFER_SIBLING on asymmetric cpu capacity domains
FROMLIST: sched/core: Disable SD_ASYM_CPUCAPACITY for root_domains without asymmetry
FROMLIST: sched/fair: Set rq->rd->overload when misfit
FROMLIST: sched: Wrap rq->rd->overload accesses with READ/WRITE_ONCE
FROMLIST: sched: Change root_domain->overload type to int
FROMLIST: sched/fair: Change prefer_sibling type to bool
FROMLIST: sched/fair: Consider misfit tasks when load-balancing
FROMLIST: sched: Add sched_group per-cpu max capacity
FROMLIST: sched/fair: Add group_misfit_task load-balance type
FROMLIST: sched: Add static_key for asymmetric cpu capacity optimizations
UPSTREAM: ANDROID: binder: change down_write to down_read
UPSTREAM: ANDROID: binder: correct the cmd print for BINDER_WORK_RETURN_ERROR
UPSTREAM: ANDROID: binder: remove 32-bit binder interface.
UPSTREAM: android: binder: Use true and false for boolean values
UPSTREAM: android: binder: Use octal permissions
UPSTREAM: android: binder: Prefer __func__ to using hardcoded function name
UPSTREAM: ANDROID: binder: make binder_alloc_new_buf_locked static and indent its arguments
UPSTREAM: android: binder: Check for errors in binder_alloc_shrinker_init().
Conflicts:
arch/arm64/Kconfig
arch/arm64/include/asm/cpucaps.h
arch/arm64/include/asm/cpufeature.h
arch/arm64/include/asm/thread_info.h
arch/arm64/kernel/cpu_errata.c
arch/arm64/kernel/cpufeature.c
arch/arm64/kernel/entry.S
arch/arm64/kernel/ssbd.c
drivers/base/arch_topology.c
drivers/md/Kconfig
drivers/scsi/ufs/ufshcd.c
drivers/usb/gadget/function/f_fs.c
include/trace/events/sched.h
kernel/sched/cpufreq_schedutil.c
kernel/sched/energy.c
kernel/sched/fair.c
kernel/sched/features.h
kernel/sched/sched.h
kernel/sched/topology.c
kernel/sched/tune.c
kernel/sched/walt.c
kernel/sched/walt.h
kernel/stop_machine.c
kernel/time/tick-sched.c
net/socket.c
sound/core/rawmidi.c
Change-Id: Ia246711317930ecd55bb42565a04e6b4fdfc26d2
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
|
||
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Rafael J. Wysocki
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6277dd586f |
BACKPORT: time: hrtimer: Introduce hrtimer_next_event_without()
The next set of changes will need to compute the time to the next hrtimer event over all hrtimers except for the scheduler tick one. To that end introduce a new helper function, hrtimer_next_event_without(), for computing the time until the next hrtimer event over all timers except for one and modify the underlying code in __hrtimer_next_event_base() to prepare it for being called by that new function. No intentional code behavior changes. Cherry-picked from a59855cd8c613ba4bb95147f6176360d95f75e60 - Fixed conflict with tick_nohz_stopped_cpu not appearing in the chunk context. Trivial fix. Change-Id: I0dae9e08e19559efae9697800738c5522ab5933f Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Todd Kjos <tkjos@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Paven Kondati <pkondeti@qti.qualcomm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Viresh Kumar
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a67f648836 |
hrtimer: create hrtimer_quiesce_cpu() to isolate CPU from hrtimers
To isolate CPUs (isolate from hrtimers) from sysfs using cpusets, we need some support from the hrtimer core. i.e. A routine hrtimer_quiesce_cpu() which would migrate away all the unpinned hrtimers, but shouldn't touch the pinned ones. This patch creates this routine. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [forward port to 3.18] Signed-off-by: Santosh Shukla <santosh.shukla@linaro.org> [ohaugan@codeaurora.org: Port to 4.4] Git-commit: d4d50a0ddc35e58ee95137ba4d14e74fea8b682f Git-repo: git://git.linaro.org/people/mike.holmes/santosh.shukla/lng-isol.git Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> [rameezmustafa@codeaurora.org: Port to msm-4.9] Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> Change-Id: Icf93622bdeed9c6c28eb1aca1637bc5b9522a533 Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org> |
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Viresh Kumar
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06d4745936 |
hrtimer: update timer->state with 'pinned' information
'Pinned' information would be required in migrate_hrtimers() now, as we can migrate non-pinned timers away without a hotplug (i.e. with cpuset.quiesce). And so we may need to identify pinned timers now, as we can't migrate them. This patch reuses the timer->state variable for setting this flag as there were enough number of free bits available in this variable. And there is no point increasing size of this struct by adding another field. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [forward port to 3.18] Signed-off-by: Santosh Shukla <santosh.shukla@linaro.org> [ohaugan@codeaurora.org: Port to 4.4] Git-commit: 62feaf1ed0b64c04868d143d8bdb92d60dc3189b Git-repo: git://git.linaro.org/people/mike.holmes/santosh.shukla/lng-isol.git Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> [markivx: Port to 4.14, fix merge conflicts due to lack of timer stats code] Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org> Change-Id: Id2cdd74903598e31fab6999c4cbab9c2fd17fe23 Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org> |
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Deepa Dinamani
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c0edd7c9ac |
nanosleep: Use get_timespec64() and put_timespec64()
Usage of these apis and their compat versions makes the syscalls: clock_nanosleep and nanosleep and their compat implementations simpler. This is a preparatory patch to isolate data conversions to struct timespec64 at userspace boundaries. This helps contain the changes needed to transition to new y2038 safe types. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Thomas Gleixner
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938e7cf2d5 |
posix-timers: Make nanosleep timespec argument const
No nanosleep implementation modifies the rqtp argument. Mark is const. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> |
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Al Viro
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fb923c4a3c |
posix-timers: Kill ->nsleep_restart()
No more users. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-8-viro@ZenIV.linux.org.uk |
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Al Viro
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ce41aaf47a |
hrtimers/posix-timers: Merge nanosleep timespec copyout logics into a new helper
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-7-viro@ZenIV.linux.org.uk |
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Al Viro
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192a82f900 |
hrtimer_nanosleep(): Pass rmtp in restart_block
Store the pointer to the timespec which gets updated with the remaining time in the restart block and remove the function argument. [ tglx: Added changelog ] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-3-viro@ZenIV.linux.org.uk |
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Deepa Dinamani
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ad19638463 |
time: Change k_clock nsleep() to use timespec64
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. The syscall interfaces themselves will be changed in a separate series. Note that the restart_block parameter for nanosleep has also been left unchanged and will be part of syscall series noted above. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-8-git-send-email-deepa.kernel@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Stephen Boyd
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016da20148 |
hrtimer: Remove hrtimer_peek_ahead_timers() leftovers
This function was removed in commit
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Ingo Molnar
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283cb90305 |
sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
In our quest to simplify <linux/sched.h>'s header dependencies, remove the <linux/wait.h> inclusion from <linux/hrtimer.h> - which does not appear to be necessary, as hrtimer.h does not use waitqueues. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kees Cook
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dfb4357da6 |
time: Remove CONFIG_TIMER_STATS
Currently CONFIG_TIMER_STATS exposes process information across namespaces:
kernel/time/timer_list.c print_timer():
SEQ_printf(m, ", %s/%d", tmp, timer->start_pid);
/proc/timer_list:
#11: <0000000000000000>, hrtimer_wakeup, S:01, do_nanosleep, cron/2570
Given that the tracer can give the same information, this patch entirely
removes CONFIG_TIMER_STATS.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Xing Gao <xgao01@email.wm.edu>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jessica Frazelle <me@jessfraz.com>
Cc: kernel-hardening@lists.openwall.com
Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-api@vger.kernel.org
Cc: Arjan van de Ven <arjan@linux.intel.com>
Link: http://lkml.kernel.org/r/20170208192659.GA32582@beast
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner
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2456e85535 |
ktime: Get rid of the union
ktime is a union because the initial implementation stored the time in scalar nanoseconds on 64 bit machine and in a endianess optimized timespec variant for 32bit machines. The Y2038 cleanup removed the timespec variant and switched everything to scalar nanoseconds. The union remained, but become completely pointless. Get rid of the union and just keep ktime_t as simple typedef of type s64. The conversion was done with coccinelle and some manual mopping up. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> |
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Thomas Gleixner
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27590dc17b |
hrtimer: Convert to hotplug state machine
Split out the clockevents callbacks instead of piggybacking them on
hrtimers.
This gets rid of a POST_DEAD user. See commit:
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John Stultz
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da8b44d5a9 |
timer: convert timer_slack_ns from unsigned long to u64
This patchset introduces a /proc/<pid>/timerslack_ns interface which would allow controlling processes to be able to set the timerslack value on other processes in order to save power by avoiding wakeups (Something Android currently does via out-of-tree patches). The first patch tries to fix the internal timer_slack_ns usage which was defined as a long, which limits the slack range to ~4 seconds on 32bit systems. It converts it to a u64, which provides the same basically unlimited slack (500 years) on both 32bit and 64bit machines. The second patch introduces the /proc/<pid>/timerslack_ns interface which allows the full 64bit slack range for a task to be read or set on both 32bit and 64bit machines. With these two patches, on a 32bit machine, after setting the slack on bash to 10 seconds: $ time sleep 1 real 0m10.747s user 0m0.001s sys 0m0.005s The first patch is a little ugly, since I had to chase the slack delta arguments through a number of functions converting them to u64s. Let me know if it makes sense to break that up more or not. Other than that things are fairly straightforward. This patch (of 2): The timer_slack_ns value in the task struct is currently a unsigned long. This means that on 32bit applications, the maximum slack is just over 4 seconds. However, on 64bit machines, its much much larger (~500 years). This disparity could make application development a little (as well as the default_slack) to a u64. This means both 32bit and 64bit systems have the same effective internal slack range. Now the existing ABI via PR_GET_TIMERSLACK and PR_SET_TIMERSLACK specify the interface as a unsigned long, so we preserve that limitation on 32bit systems, where SET_TIMERSLACK can only set the slack to a unsigned long value, and GET_TIMERSLACK will return ULONG_MAX if the slack is actually larger then what can be stored by an unsigned long. This patch also modifies hrtimer functions which specified the slack delta as a unsigned long. Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Oren Laadan <orenl@cellrox.com> Cc: Ruchi Kandoi <kandoiruchi@google.com> Cc: Rom Lemarchand <romlem@android.com> Cc: Kees Cook <keescook@chromium.org> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Thomas Gleixner
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203cbf77de |
hrtimer: Handle remaining time proper for TIME_LOW_RES
If CONFIG_TIME_LOW_RES is enabled we add a jiffie to the relative timeout to prevent short sleeps, but we do not account for that in interfaces which retrieve the remaining time. Helge observed that timerfd can return a remaining time larger than the relative timeout. That's not expected and breaks userland test programs. Store the information that the timer was armed relative and provide functions to adjust the remaining time. To avoid bloating the hrtimer struct make state a u8, which as a bonus results in better code on x86 at least. Reported-and-tested-by: Helge Deller <deller@gmx.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: linux-m68k@lists.linux-m68k.org Cc: dhowells@redhat.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160114164159.273328486@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Thomas Gleixner
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683be13a28 |
timer: Minimize nohz off overhead
If nohz is disabled on the kernel command line the [hr]timer code still calls wake_up_nohz_cpu() and tick_nohz_full_cpu(), a pretty pointless exercise. Cache nohz_active in [hr]timer per cpu bases and avoid the overhead. Before: 48.10% hog [.] main 15.25% [kernel] [k] _raw_spin_lock_irqsave 9.76% [kernel] [k] _raw_spin_unlock_irqrestore 6.50% [kernel] [k] mod_timer 6.44% [kernel] [k] lock_timer_base.isra.38 3.87% [kernel] [k] detach_if_pending 3.80% [kernel] [k] del_timer 2.67% [kernel] [k] internal_add_timer 1.33% [kernel] [k] __internal_add_timer 0.73% [kernel] [k] timerfn 0.54% [kernel] [k] wake_up_nohz_cpu After: 48.73% hog [.] main 15.36% [kernel] [k] _raw_spin_lock_irqsave 9.77% [kernel] [k] _raw_spin_unlock_irqrestore 6.61% [kernel] [k] lock_timer_base.isra.38 6.42% [kernel] [k] mod_timer 3.90% [kernel] [k] detach_if_pending 3.76% [kernel] [k] del_timer 2.41% [kernel] [k] internal_add_timer 1.39% [kernel] [k] __internal_add_timer 0.76% [kernel] [k] timerfn We probably should have a cached value for nohz full in the per cpu bases as well to avoid the cpumask check. The base cache line is hot already, the cpumask not necessarily. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Link: http://lkml.kernel.org/r/20150526224512.207378134@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Thomas Gleixner
|
bc7a34b8b9 |
timer: Reduce timer migration overhead if disabled
Eric reported that the timer_migration sysctl is not really nice performance wise as it needs to check at every timer insertion whether the feature is enabled or not. Further the check does not live in the timer code, so we have an extra function call which checks an extra cache line to figure out that it is disabled. We can do better and store that information in the per cpu (hr)timer bases. I pondered to use a static key, but that's a nightmare to update from the nohz code and the timer base cache line is hot anyway when we select a timer base. The old logic enabled the timer migration unconditionally if CONFIG_NO_HZ was set even if nohz was disabled on the kernel command line. With this modification, we start off with migration disabled. The user visible sysctl is still set to enabled. If the kernel switches to NOHZ migration is enabled, if the user did not disable it via the sysctl prior to the switch. If nohz=off is on the kernel command line, migration stays disabled no matter what. Before: 47.76% hog [.] main 14.84% [kernel] [k] _raw_spin_lock_irqsave 9.55% [kernel] [k] _raw_spin_unlock_irqrestore 6.71% [kernel] [k] mod_timer 6.24% [kernel] [k] lock_timer_base.isra.38 3.76% [kernel] [k] detach_if_pending 3.71% [kernel] [k] del_timer 2.50% [kernel] [k] internal_add_timer 1.51% [kernel] [k] get_nohz_timer_target 1.28% [kernel] [k] __internal_add_timer 0.78% [kernel] [k] timerfn 0.48% [kernel] [k] wake_up_nohz_cpu After: 48.10% hog [.] main 15.25% [kernel] [k] _raw_spin_lock_irqsave 9.76% [kernel] [k] _raw_spin_unlock_irqrestore 6.50% [kernel] [k] mod_timer 6.44% [kernel] [k] lock_timer_base.isra.38 3.87% [kernel] [k] detach_if_pending 3.80% [kernel] [k] del_timer 2.67% [kernel] [k] internal_add_timer 1.33% [kernel] [k] __internal_add_timer 0.73% [kernel] [k] timerfn 0.54% [kernel] [k] wake_up_nohz_cpu Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Link: http://lkml.kernel.org/r/20150526224512.127050787@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Peter Zijlstra
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887d9dc989 |
hrtimer: Allow hrtimer::function() to free the timer
Currently an hrtimer callback function cannot free its own timer because __run_hrtimer() still needs to clear HRTIMER_STATE_CALLBACK after it. Freeing the timer would result in a clear use-after-free. Solve this by using a scheme similar to regular timers; track the current running timer in hrtimer_clock_base::running. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: ktkhai@parallels.com Cc: rostedt@goodmis.org Cc: juri.lelli@gmail.com Cc: pang.xunlei@linaro.org Cc: wanpeng.li@linux.intel.com Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: umgwanakikbuti@gmail.com Link: http://lkml.kernel.org/r/20150611124743.471563047@infradead.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Oleg Nesterov
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c04dca02bc |
hrtimer: Remove HRTIMER_STATE_MIGRATE
I do not understand HRTIMER_STATE_MIGRATE. Unless I am totally confused it looks buggy and simply unneeded. migrate_hrtimer_list() sets it to keep hrtimer_active() == T, but this is not enough: this can fool, say, hrtimer_is_queued() in dequeue_signal(). Can't migrate_hrtimer_list() simply use HRTIMER_STATE_ENQUEUED? This fixes the race and we can kill STATE_MIGRATE. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: ktkhai@parallels.com Cc: rostedt@goodmis.org Cc: juri.lelli@gmail.com Cc: pang.xunlei@linaro.org Cc: wanpeng.li@linux.intel.com Cc: umgwanakikbuti@gmail.com Link: http://lkml.kernel.org/r/20150611124743.072387650@infradead.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Borislav Petkov
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d711b8b30c |
hrtimers: Make sure hrtimer_resolution is unsigned int
... in the !CONFIG_HIGH_RES_TIMERS case too. And thus fix warnings like
this one:
net/sched/sch_api.c: In function ‘psched_show’:
net/sched/sch_api.c:1891:6: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 6 has type ‘long int’ [-Wformat=]
(u32)NSEC_PER_SEC / hrtimer_resolution);
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1433583000-32090-1-git-send-email-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner
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61699e1307 |
hrtimer: Remove hrtimer_start() return value
No user was ever interested whether the timer was active or not when it was started. All abusers of the return value are gone, so get rid of it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/20150414203503.483556394@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Thomas Gleixner
|
02a171af1a |
hrtimer: Make hrtimer_start() a inline wrapper
No point for an extra export just to set the extra argument of hrtimer_start_range_ns() to 0. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/20150414203502.808544539@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |