- 19 Mar, 2019 2 commits
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Konstantin Khlebnikov authored
Add limit into sscanf format string for on-stack buffer. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 0d593634 ("sched: Implement interface for cgroup unified hierarchy") Link: https://lkml.kernel.org/r/155189230232.2620.13120481613524200065.stgit@buzzSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Peter Zijlstra authored
Vincent Wang reported that get_next_freq() has a mult overflow bug on 32-bit platforms in the IOWAIT boost case, since in that case {util,max} are in freq units instead of capacity units. Solve this by moving the IOWAIT boost to capacity units. And since this means @max is constant; simplify the code. Reported-by: Vincent Wang <vincent.wang@unisoc.com> Tested-by: Vincent Wang <vincent.wang@unisoc.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Chunyan Zhang <zhang.lyra@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Perret <quentin.perret@arm.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Rik van Riel <riel@surriel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190305083202.GU32494@hirez.programming.kicks-ass.netSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 28 Feb, 2019 2 commits
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Sebastian Andrzej Siewior authored
The TIMER_IRQSAFE usage was introduced in commit 22597dc3 ("kthread: initial support for delayed kthread work") which modelled the delayed kthread code after workqueue's code. The workqueue code requires the flag TIMER_IRQSAFE for synchronisation purpose. This is not true for kthread's delay timer since all operations occur under a lock. Remove TIMER_IRQSAFE from the timer initialisation and use timer_setup() for initialisation purpose which is the official function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lkml.kernel.org/r/20190212162554.19779-2-bigeasy@linutronix.de
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Julia Cartwright authored
In order to enable the queuing of kthread work items from hardirq context even when PREEMPT_RT_FULL is enabled, convert the worker spin_lock to a raw_spin_lock. This is only acceptable to do because the work performed under the lock is well-bounded and minimal. Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Reported-by: Tim Sander <tim@krieglstein.org> Signed-off-by: Julia Cartwright <julia@ni.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Link: https://lkml.kernel.org/r/20190212162554.19779-1-bigeasy@linutronix.de
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- 13 Feb, 2019 1 commit
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Viresh Kumar authored
The cpumasks updated here are not subject to concurrency and using atomic bitops for them is pointless and expensive. Use the non-atomic variants instead. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Guittot <vincent.guittot@linaro.org> Link: http://lkml.kernel.org/r/2e2a10f84b9049a81eef94ed6d5989447c21e34a.1549963617.git.viresh.kumar@linaro.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 11 Feb, 2019 10 commits
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Viresh Kumar authored
The 'sd' parameter isn't getting used in select_idle_smt(), drop it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Guittot <vincent.guittot@linaro.org> Link: http://lkml.kernel.org/r/f91c5e118183e79d4a982e9ac4ce5e47948f6c1b.1549536337.git.viresh.kumar@linaro.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Hugo Lefeuvre authored
Replace 'schedule(); try_to_freeze();' with a call to freezable_schedule(). Tasks calling freezable_schedule() set the PF_FREEZER_SKIP flag before calling schedule(). Unlike tasks calling schedule(); try_to_freeze() tasks calling freezable_schedule() are not awaken by try_to_freeze_tasks(). Instead they call try_to_freeze() when they wake up if the freeze is still underway. It is not a problem since sleeping tasks can't do anything which isn't allowed for a frozen task while sleeping. The result is a potential performance gain during freeze, since less tasks have to be awaken. For instance on a bare Debian vm running a 4.19 stable kernel, the number of tasks skipped in freeze_task() went up from 12 without the patch to 32 with the patch (out of 448), an increase of > x2.5. Signed-off-by: Hugo Lefeuvre <hle@owl.eu.com> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20190207200352.GA27859@behemoth.owl.eu.com.localSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Valentin Schneider authored
The comment block for that function lists the heuristics for triggering a nohz kick, but the most recent ones (blocked load updates, misfit) aren't included, and some of them (LLC nohz logic, asym packing) are no longer in sync with the code. The conditions are either simple enough or properly commented, so get rid of that list instead of letting it grow. Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Dietmar.Eggemann@arm.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: morten.rasmussen@arm.com Cc: vincent.guittot@linaro.org Link: https://lkml.kernel.org/r/20190117153411.2390-4-valentin.schneider@arm.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Valentin Schneider authored
Provide a comment explaining the LLC related nohz kick in nohz_balancer_kick(). Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Dietmar.Eggemann@arm.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: morten.rasmussen@arm.com Cc: vincent.guittot@linaro.org Link: https://lkml.kernel.org/r/20190117153411.2390-3-valentin.schneider@arm.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Valentin Schneider authored
Calling 'nohz_balance_exit_idle(rq)' will always clear 'rq->cpu' from 'nohz.idle_cpus_mask' if it is set. Since it is called at the top of 'nohz_balancer_kick()', 'rq->cpu' will never be set in 'nohz.idle_cpus_mask' if it is accessed in the rest of the function. Combine the 'sched_domain_span()' with 'nohz.idle_cpus_mask' and drop the '(i == cpu)' check since 'rq->cpu' will never be iterated over. While at it, clean up a condition alignment. Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Dietmar.Eggemann@arm.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: morten.rasmussen@arm.com Cc: vincent.guittot@linaro.org Link: https://lkml.kernel.org/r/20190117153411.2390-2-valentin.schneider@arm.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Luc Van Oostenryck authored
The percpu members of struct sd_data and s_data are declared as: struct ... ** __percpu member; So their type is: __percpu pointer to pointer to struct ... But looking at how they're used, their type should be: pointer to __percpu pointer to struct ... and they should thus be declared as: struct ... * __percpu *member; So fix the placement of '__percpu' in the definition of these structures. This addresses a bunch of Sparse's warnings like: warning: incorrect type in initializer (different address spaces) expected void const [noderef] <asn:3> *__vpp_verify got struct sched_domain ** Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190118144936.79158-1-luc.vanoostenryck@gmail.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Dietmar Eggemann authored
Since commit: d0326691 ("sched/fair: Fix task group initialization") the utilization of a sched entity representing a task group is no longer initialized to any other value than 0. So post_init_entity_util_avg() is only used for tasks, not for sched_entities. Make this clear by calling it with a task_struct pointer argument which also eliminates the entity_is_task(se) if condition in the fork path and get rid of the stale comment in remove_entity_load_avg() accordingly. Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Morten Rasmussen <morten.rasmussen@arm.com> Cc: Patrick Bellasi <patrick.bellasi@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Perret <quentin.perret@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Link: https://lkml.kernel.org/r/20190122162501.12000-1-dietmar.eggemann@arm.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Vincent Guittot authored
This re-applies the commit reverted here: commit c40f7d74 ("sched/fair: Fix infinite loop in update_blocked_averages() by reverting a9e7f654") I.e. now that cfs_rq can be safely removed/added in the list, we can re-apply: commit a9e7f654 ("sched/fair: Fix O(nr_cgroups) in load balance path") Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: sargun@sargun.me Cc: tj@kernel.org Cc: xiexiuqi@huawei.com Cc: xiezhipeng1@huawei.com Link: https://lkml.kernel.org/r/1549469662-13614-3-git-send-email-vincent.guittot@linaro.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Vincent Guittot authored
Removing a cfs_rq from rq->leaf_cfs_rq_list can break the parent/child ordering of the list when it will be added back. In order to remove an empty and fully decayed cfs_rq, we must remove its children too, so they will be added back in the right order next time. With a normal decay of PELT, a parent will be empty and fully decayed if all children are empty and fully decayed too. In such a case, we just have to ensure that the whole branch will be added when a new task is enqueued. This is default behavior since : commit f6783319 ("sched/fair: Fix insertion in rq->leaf_cfs_rq_list") In case of throttling, the PELT of throttled cfs_rq will not be updated whereas the parent will. This breaks the assumption made above unless we remove the children of a cfs_rq that is throttled. Then, they will be added back when unthrottled and a sched_entity will be enqueued. As throttled cfs_rq are now removed from the list, we can remove the associated test in update_blocked_averages(). Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: sargun@sargun.me Cc: tj@kernel.org Cc: xiexiuqi@huawei.com Cc: xiezhipeng1@huawei.com Link: https://lkml.kernel.org/r/1549469662-13614-2-git-send-email-vincent.guittot@linaro.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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- 10 Feb, 2019 7 commits
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Linus Torvalds authored
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git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds authored
Pull dmaengine fixes from Vinod Koul: - Fix in at_xdmac fr wrongful channel state - Fix for imx driver for wrong callback invocation - Fix to bcm driver for interrupt race & transaction abort. - Fix in dmatest to abort in mapping error * tag 'dmaengine-fix-5.0-rc6' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: dmatest: Abort test in case of mapping error dmaengine: bcm2835: Fix abort of transactions dmaengine: bcm2835: Fix interrupt race on RT dmaengine: imx-dma: fix wrong callback invoke dmaengine: at_xdmac: Fix wrongfull report of a channel as in use
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "A handful of fixes: - Fix an MCE corner case bug/crash found via MCE injection testing - Fix 5-level paging boot crash - Fix MCE recovery cache invalidation bug - Fix regression on Xen guests caused by a recent PMD level mremap speedup optimization" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Make set_pmd_at() paravirt aware x86/mm/cpa: Fix set_mce_nospec() x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Ingo Molnar: "irqchip driver fixes: most of them are race fixes for ARM GIC (General Interrupt Controller) variants, but also a fix for the ARM MMP (Marvell PXA168 et al) irqchip affecting OLPC keyboards" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v3-its: Fix ITT_entry_size accessor irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable irqchip/gic-v3-its: Gracefully fail on LPI exhaustion irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID irqchip/gic-v4: Fix occasional VLPI drop
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "A couple of kernel side fixes: - Fix the Intel uncore driver on certain hardware configurations - Fix a CPU hotplug related memory allocation bug - Remove a spurious WARN() ... plus also a handful of perf tooling fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf script python: Add Python3 support to tests/attr.py perf trace: Support multiple "vfs_getname" probes perf symbols: Filter out hidden symbols from labels perf symbols: Add fallback definitions for GELF_ST_VISIBILITY() tools headers uapi: Sync linux/in.h copy from the kernel sources perf clang: Do not use 'return std::move(something)' perf mem/c2c: Fix perf_mem_events to support powerpc perf tests evsel-tp-sched: Fix bitwise operator perf/core: Don't WARN() for impossible ring-buffer sizes perf/x86/intel: Delay memory deallocation until x86_pmu_dead_cpu() perf/x86/intel/uncore: Add Node ID mask
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Ingo Molnar: "An rtmutex (PI-futex) deadlock scenario fix, plus a locking documentation fix" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Handle early deadlock return correctly futex: Fix barrier comment
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Juergen Gross authored
set_pmd_at() calls native_set_pmd() unconditionally on x86. This was fine as long as only huge page entries were written via set_pmd_at(), as Xen pv guests don't support those. Commit 2c91bd4a ("mm: speed up mremap by 20x on large regions") introduced a usage of set_pmd_at() possible on pv guests, leading to failures like: BUG: unable to handle kernel paging request at ffff888023e26778 #PF error: [PROT] [WRITE] RIP: e030:move_page_tables+0x7c1/0xae0 move_vma.isra.3+0xd1/0x2d0 __se_sys_mremap+0x3c6/0x5b0 do_syscall_64+0x49/0x100 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Make set_pmd_at() paravirt aware by just letting it use set_pmd(). Fixes: 2c91bd4a ("mm: speed up mremap by 20x on large regions") Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: xen-devel@lists.xenproject.org Cc: boris.ostrovsky@oracle.com Cc: sstabellini@kernel.org Cc: hpa@zytor.com Cc: bp@alien8.de Cc: torvalds@linux-foundation.org Link: https://lkml.kernel.org/r/20190210074056.11842-1-jgross@suse.com
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- 09 Feb, 2019 9 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "One PM related driver bugfix and a MAINTAINERS update" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: MAINTAINERS: Update the ocores i2c bus driver maintainer, etc i2c: omap: Use noirq system sleep pm ops to idle device for suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Paul Burton: "A batch of MIPS fixes for 5.0, nothing too scary. - A workaround for a Loongson 3 CPU bug is the biggest change, but still fairly straightforward. It adds extra memory barriers (sync instructions) around atomics to avoid a CPU bug that can break atomicity. - Loongson64 also sees a fix for powering off some systems which would incorrectly reboot rather than waiting for the power down sequence to complete. - We have DT fixes for the Ingenic JZ4740 SoC & the JZ4780-based Ci20 board, and a DT warning fix for the Nexsys4/MIPSfpga board. - The Cavium Octeon platform sees a further fix to the behaviour of the pcie_disable command line argument that was introduced in v3.3. - The VDSO, introduced in v4.4, sees build fixes for configurations of GCC that were built using the --with-fp-32= flag to specify a default 32-bit floating point ABI. - get_frame_info() sees a fix for configurations with CONFIG_KALLSYMS=n, for which it previously always returned an error. - If the MIPS Coherence Manager (CM) reports an error then we'll now clear that error correctly so that the GCR_ERROR_CAUSE register will be updated with information about any future errors" * tag 'mips_fixes_5.0_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: mips: cm: reprime error cause mips: loongson64: remove unreachable(), fix loongson_poweroff(). MIPS: Remove function size check in get_frame_info() MIPS: Use lower case for addresses in nexys4ddr.dts MIPS: Loongson: Introduce and use loongson_llsc_mb() MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds MIPS: VDSO: Use same -m%-float cflag as the kernel proper MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled DTS: CI20: Fix bugs in ci20's device tree. MIPS: DTS: jz4740: Correct interrupt number of DMA core
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - NVMe pull request from Christoph, fixing namespace locking when dealing with the effects log, and a rapid add/remove issue (Keith) - blktrace tweak, ensuring requests with -1 sectors are shown (Jan) - link power management quirk for a Smasung SSD (Hans) - m68k nfblock dynamic major number fix (Chengguang) - series fixing blk-iolatency inflight counter issue (Liu) - ensure that we clear ->private when setting up the aio kiocb (Mike) - __find_get_block_slow() rate limit print (Tetsuo) * tag 'for-linus-20190209' of git://git.kernel.dk/linux-block: blk-mq: remove duplicated definition of blk_mq_freeze_queue Blk-iolatency: warn on negative inflight IO counter blk-iolatency: fix IO hang due to negative inflight counter blktrace: Show requests without sector fs: ratelimit __find_get_block_slow() failure message. m68k: set proper major_num when specifying module param major_num libata: Add NOLPM quirk for SAMSUNG MZ7TE512HMHP-000L1 SSD nvme-pci: fix rapid add remove sequence nvme: lock NS list changes while handling command effects aio: initialize kiocb private in case any filesystems expect it.
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git://git.infradead.org/linux-mtdLinus Torvalds authored
Pull mtd fixes from Boris Brezillon: - Fix a problem with the imx28 ECC engine - Remove a debug trace introduced in 2b6f0090 ("mtd: Check add_mtd_device() ret code") - Make sure partitions of size 0 can be registered - Fix kernel-doc warning in the rawnand core - Fix the error path of spinand_init() (missing manufacturer cleanup in a few places) - Address a problem with the SPI NAND PROGRAM LOAD operation which does not work as expected on some parts. * tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd: mtd: rawnand: gpmi: fix MX28 bus master lockup problem mtd: Make sure mtd->erasesize is valid even if the partition is of size 0 mtd: Remove a debug trace in mtdpart.c mtd: rawnand: fix kernel-doc warnings mtd: spinand: Fix the error/cleanup path in spinand_init() mtd: spinand: Handle the case where PROGRAM LOAD does not reset the cache
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "Two very minor fixes: one remove of a #include for an unused header and a fix of the xen ML address in MAINTAINERS" * tag 'for-linus-5.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: MAINTAINERS: unify reference to xen-devel list arch/arm/xen: Remove duplicate header
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Ingo Molnar authored
Merge tag 'perf-urgent-for-mingo-5.0-20190205' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: perf trace: Arnaldo Carvalho de Melo: Fix handling of probe:vfs_getname when the probed routine is inlined in multiple places, fixing the collection of the 'filename' parameter in open syscalls. perf test: Gustavo A. R. Silva: Fix bitwise operator usage in evsel-tp-sched test, which made tat test always detect fields as signed. Jiri Olsa: Filter out hidden symbols from labels, added in systems where the annobin plugin is used, such as RHEL8, which, if left in place make the DWARF unwind 'perf test' to fail on PPC. Tony Jones: Fix 'perf_event_attr' tests when building with python3. perf mem/c2c: Ravi Bangoria: Fix perf_mem_events on PowerPC. tools headers UAPI: Arnaldo Carvalho de Melo: Sync linux/in.h copy from the kernel sources, silencing a perf build warning. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fixes from Arnd Bergmann: "This is a bit larger than normal, as we had not managed to send out a pull request before traveling for a week without my signing key. There are multiple code fixes for older bugs, all of which should get backported into stable kernels: - tango: one fix for multiplatform configurations broken on other platforms when tango is enabled - arm_scmi: device unregistration fix - iop32x: fix kernel oops from extraneous __init annotation - pxa: remove a double kfree - fsl qbman: close an interrupt clearing race The rest is the usual collection of smaller fixes for device tree files, on the renesas, allwinner, meson, omap, davinci, qualcomm and imx platforms. Some of these are for compile-time warnings, most are for board specific functionality that fails to work because of incorrect settings" * tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits) ARM: tango: Improve ARCH_MULTIPLATFORM compatibility firmware: arm_scmi: provide the mandatory device release callback ARM: iop32x/n2100: fix PCI IRQ mapping arm64: dts: add msm8996 compatible to gicv3 ARM: dts: am335x-shc.dts: fix wrong cd pin level ARM: dts: n900: fix mmc1 card detect gpio polarity ARM: dts: omap3-gta04: Fix graph_port warning ARM: pxa: ssp: unneeded to free devm_ allocated data ARM: dts: r8a7743: Convert to new LVDS DT bindings soc: fsl: qbman: avoid race in clearing QMan interrupt arm64: dts: renesas: r8a77965: Enable DMA for SCIF2 arm64: dts: renesas: r8a7796: Enable DMA for SCIF2 arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2 ARM: dts: da850: fix interrupt numbers for clocksource dt-bindings: imx8mq: Number clocks consecutively arm64: dts: meson: Fix mmc cd-gpios polarity ARM: dts: imx6sx: correct backward compatible of gpt ARM: dts: imx: replace gpio-key,wakeup with wakeup-source property ARM: dts: vf610-bk4: fix incorrect #address-cells for dspi3 ARM: dts: meson8m2: mxiii-plus: mark the SD card detection GPIO active-low ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "Two arm64 fixes for -rc6. They resolve a kernel NULL dereference in kexec and bogus kernel page table dumping when userspace is configured for 52-bit virtual addressing. Summary: - Fix kernel oops when attemping kexec_file() with a NULL cmdline - Fix page table output in debugfs when ARM64_USER_VA_BITS_52=y" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: kexec_file: handle empty command-line arm64: ptdump: Don't iterate kernel page tables using PTRS_PER_PXX
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "Just two fixes, both going to stable. - Our support for split pmd page table lock had a bug which could lead to a crash on mremap() when using the Radix MMU (Power9 only). - A fix for the PAPR SCM driver (nvdimm) we added last release, which had a bug where we might mis-handle a hypervisor response leading to us failing to attach the memory region. Thanks to: Aneesh Kumar K.V, Oliver O'Halloran" * tag 'powerpc-5.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/papr_scm: Use the correct bind address powerpc/radix: Fix kernel crash with mremap()
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- 08 Feb, 2019 9 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespaceLinus Torvalds authored
Pull signal fixes from Eric Biederman: "This contains four small fixes for signal handling. A missing range check, a regression fix, prioritizing signals we have already started a signal group exit for, and better detection of synchronous signals. The confused decision of which signals to handle failed spectacularly when a timer was pointed at SIGBUS and the stack overflowed. Resulting in an unkillable process in an infinite loop instead of a SIGSEGV and core dump" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: signal: Better detection of synchronous signals signal: Always notice exiting tasks signal: Always attempt to allocate siginfo for SIGSTOP signal: Make siginmask safe when passed a signal of 0
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "This is a set of five minor fixes (although, tecnhincally, the aicxxx fix is for a major problem in that the driver won't load without it, but I think the fact it's taken us since 4.10 to discover this indicates that the user base for these things has declined)" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: cxlflash: Prevent deadlock when adapter probe fails Revert "scsi: libfc: Add WARN_ON() when deleting rports" scsi: sd_zbc: Fix zone information messages scsi: target: make the pi_prot_format ConfigFS path readable scsi: aic94xx: fix module loading
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull IOMMU fix from Joerg Roedel: "Intel decided to leave the newly added Scalable Mode Feature default-disabled for now. The patch here accomplishes that" * tag 'iommu-fixes-v5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/vt-d: Leave scalable mode default off
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fix from Bjorn Helgaas: "Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX) that breaks PCIe on I.MX SoCs (Thinh Nguyen)" * tag 'pci-v5.0-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX)
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fix from Rafael Wysocki: "This prevents excessive ACPI debug messages from being printed to the kernel log, which has started to happen after one of the recent ACPICA commits (Erik Schmauss)" * tag 'acpi-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: Set debug output flags independent of ACPICA
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Andrew Lunn authored
The listed maintainer has not been responding to emails for a while. Add myself as a second maintainer. Add the platform data include file, which was not listed. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Liu Bo authored
As the prototype has been defined in "include/linux/blk-mq.h", the one in "block/blk-mq.h" can be removed then. Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Liu Bo authored
This is to catch any unexpected negative value of inflight IO counter. Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Liu Bo authored
Our test reported the following stack, and vmcore showed that ->inflight counter is -1. [ffffc9003fcc38d0] __schedule at ffffffff8173d95d [ffffc9003fcc3958] schedule at ffffffff8173de26 [ffffc9003fcc3970] io_schedule at ffffffff810bb6b6 [ffffc9003fcc3988] blkcg_iolatency_throttle at ffffffff813911cb [ffffc9003fcc3a20] rq_qos_throttle at ffffffff813847f3 [ffffc9003fcc3a48] blk_mq_make_request at ffffffff8137468a [ffffc9003fcc3b08] generic_make_request at ffffffff81368b49 [ffffc9003fcc3b68] submit_bio at ffffffff81368d7d [ffffc9003fcc3bb8] ext4_io_submit at ffffffffa031be00 [ext4] [ffffc9003fcc3c00] ext4_writepages at ffffffffa03163de [ext4] [ffffc9003fcc3d68] do_writepages at ffffffff811c49ae [ffffc9003fcc3d78] __filemap_fdatawrite_range at ffffffff811b6188 [ffffc9003fcc3e30] filemap_write_and_wait_range at ffffffff811b6301 [ffffc9003fcc3e60] ext4_sync_file at ffffffffa030cee8 [ext4] [ffffc9003fcc3ea8] vfs_fsync_range at ffffffff8128594b [ffffc9003fcc3ee8] do_fsync at ffffffff81285abd [ffffc9003fcc3f18] sys_fsync at ffffffff81285d50 [ffffc9003fcc3f28] do_syscall_64 at ffffffff81003c04 [ffffc9003fcc3f50] entry_SYSCALL_64_after_swapgs at ffffffff81742b8e The ->inflight counter may be negative (-1) if 1) blk-iolatency was disabled when the IO was issued, 2) blk-iolatency was enabled before this IO reached its endio, 3) the ->inflight counter is decreased from 0 to -1 in endio() In fact the hang can be easily reproduced by the below script, H=/sys/fs/cgroup/unified/ P=/sys/fs/cgroup/unified/test echo "+io" > $H/cgroup.subtree_control mkdir -p $P echo $$ > $P/cgroup.procs xfs_io -f -d -c "pwrite 0 4k" /dev/sdg echo "`cat /sys/block/sdg/dev` target=1000000" > $P/io.latency xfs_io -f -d -c "pwrite 0 4k" /dev/sdg This fixes the problem by freezing the queue so that while enabling/disabling iolatency, there is no inflight rq running. Note that quiesce_queue is not needed as this only updating iolatency configuration about which dispatching request_queue doesn't care. Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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